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xianfeng |
/*
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* Digital Audio (PCM) abstract layer / OSS compatible
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#if 0
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#define PLUGIN_DEBUG
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#endif
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#if 0
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#define OSS_DEBUG
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#endif
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/vmalloc.h>
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#include <linux/moduleparam.h>
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#include <linux/string.h>
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#include <sound/core.h>
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#include <sound/minors.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "pcm_plugin.h"
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#include <sound/info.h>
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#include <linux/soundcard.h>
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#include <sound/initval.h>
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#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
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static int dsp_map[SNDRV_CARDS];
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static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
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static int nonblock_open = 1;
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>");
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MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
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MODULE_LICENSE("GPL");
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module_param_array(dsp_map, int, NULL, 0444);
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MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device.");
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module_param_array(adsp_map, int, NULL, 0444);
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MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device.");
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module_param(nonblock_open, bool, 0644);
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MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices.");
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MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM);
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MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1);
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extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg);
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static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file);
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static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file);
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static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file);
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static inline mm_segment_t snd_enter_user(void)
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{
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mm_segment_t fs = get_fs();
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set_fs(get_ds());
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return fs;
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}
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static inline void snd_leave_user(mm_segment_t fs)
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{
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set_fs(fs);
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}
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/*
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* helper functions to process hw_params
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*/
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static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin)
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{
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int changed = 0;
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if (i->min < min) {
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i->min = min;
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i->openmin = openmin;
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changed = 1;
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} else if (i->min == min && !i->openmin && openmin) {
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i->openmin = 1;
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changed = 1;
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}
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if (i->integer) {
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if (i->openmin) {
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i->min++;
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i->openmin = 0;
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}
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}
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if (snd_interval_checkempty(i)) {
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snd_interval_none(i);
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return -EINVAL;
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}
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return changed;
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}
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static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax)
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{
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int changed = 0;
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if (i->max > max) {
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i->max = max;
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i->openmax = openmax;
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changed = 1;
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} else if (i->max == max && !i->openmax && openmax) {
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i->openmax = 1;
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changed = 1;
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}
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if (i->integer) {
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if (i->openmax) {
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i->max--;
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i->openmax = 0;
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}
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}
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if (snd_interval_checkempty(i)) {
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snd_interval_none(i);
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return -EINVAL;
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}
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return changed;
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}
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static int snd_interval_refine_set(struct snd_interval *i, unsigned int val)
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{
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struct snd_interval t;
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t.empty = 0;
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t.min = t.max = val;
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t.openmin = t.openmax = 0;
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t.integer = 1;
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return snd_interval_refine(i, &t);
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}
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/**
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* snd_pcm_hw_param_value_min
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* @params: the hw_params instance
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* @var: parameter to retrieve
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* @dir: pointer to the direction (-1,0,1) or NULL
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*
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* Return the minimum value for field PAR.
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*/
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static unsigned int
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snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var, int *dir)
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{
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if (hw_is_mask(var)) {
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if (dir)
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*dir = 0;
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return snd_mask_min(hw_param_mask_c(params, var));
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}
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if (hw_is_interval(var)) {
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const struct snd_interval *i = hw_param_interval_c(params, var);
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if (dir)
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*dir = i->openmin;
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return snd_interval_min(i);
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}
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return -EINVAL;
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}
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/**
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* snd_pcm_hw_param_value_max
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* @params: the hw_params instance
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* @var: parameter to retrieve
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* @dir: pointer to the direction (-1,0,1) or NULL
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*
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* Return the maximum value for field PAR.
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*/
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static unsigned int
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snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var, int *dir)
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{
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if (hw_is_mask(var)) {
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if (dir)
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*dir = 0;
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return snd_mask_max(hw_param_mask_c(params, var));
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}
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if (hw_is_interval(var)) {
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const struct snd_interval *i = hw_param_interval_c(params, var);
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if (dir)
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*dir = - (int) i->openmax;
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return snd_interval_max(i);
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}
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return -EINVAL;
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}
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static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var,
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const struct snd_mask *val)
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{
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int changed;
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changed = snd_mask_refine(hw_param_mask(params, var), val);
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if (changed) {
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params->cmask |= 1 << var;
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params->rmask |= 1 << var;
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}
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return changed;
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}
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static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm,
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struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var,
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const struct snd_mask *val)
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{
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int changed = _snd_pcm_hw_param_mask(params, var, val);
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if (changed < 0)
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return changed;
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if (params->rmask) {
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int err = snd_pcm_hw_refine(pcm, params);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var, unsigned int val,
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int dir)
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{
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int changed;
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int open = 0;
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if (dir) {
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if (dir > 0) {
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open = 1;
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} else if (dir < 0) {
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if (val > 0) {
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open = 1;
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val--;
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}
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}
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}
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if (hw_is_mask(var))
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changed = snd_mask_refine_min(hw_param_mask(params, var),
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val + !!open);
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else if (hw_is_interval(var))
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changed = snd_interval_refine_min(hw_param_interval(params, var),
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val, open);
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else
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return -EINVAL;
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if (changed) {
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params->cmask |= 1 << var;
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params->rmask |= 1 << var;
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}
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return changed;
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}
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/**
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* snd_pcm_hw_param_min
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* @pcm: PCM instance
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* @params: the hw_params instance
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* @var: parameter to retrieve
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* @val: minimal value
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* @dir: pointer to the direction (-1,0,1) or NULL
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*
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* Inside configuration space defined by PARAMS remove from PAR all
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* values < VAL. Reduce configuration space accordingly.
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* Return new minimum or -EINVAL if the configuration space is empty
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*/
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static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm,
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struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var, unsigned int val,
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int *dir)
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{
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int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0);
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if (changed < 0)
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return changed;
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if (params->rmask) {
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int err = snd_pcm_hw_refine(pcm, params);
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if (err < 0)
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return err;
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}
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return snd_pcm_hw_param_value_min(params, var, dir);
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}
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static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params,
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snd_pcm_hw_param_t var, unsigned int val,
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int dir)
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{
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int changed;
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int open = 0;
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if (dir) {
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if (dir < 0) {
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open = 1;
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} else if (dir > 0) {
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open = 1;
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val++;
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}
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}
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if (hw_is_mask(var)) {
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if (val == 0 && open) {
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snd_mask_none(hw_param_mask(params, var));
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changed = -EINVAL;
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} else
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changed = snd_mask_refine_max(hw_param_mask(params, var),
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val - !!open);
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} else if (hw_is_interval(var))
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changed = snd_interval_refine_max(hw_param_interval(params, var),
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val, open);
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else
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return -EINVAL;
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307 |
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if (changed) {
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params->cmask |= 1 << var;
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309 |
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params->rmask |= 1 << var;
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310 |
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}
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311 |
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return changed;
|
312 |
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}
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313 |
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|
314 |
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/**
|
315 |
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* snd_pcm_hw_param_max
|
316 |
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* @pcm: PCM instance
|
317 |
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* @params: the hw_params instance
|
318 |
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* @var: parameter to retrieve
|
319 |
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* @val: maximal value
|
320 |
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* @dir: pointer to the direction (-1,0,1) or NULL
|
321 |
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*
|
322 |
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* Inside configuration space defined by PARAMS remove from PAR all
|
323 |
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* values >= VAL + 1. Reduce configuration space accordingly.
|
324 |
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* Return new maximum or -EINVAL if the configuration space is empty
|
325 |
|
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*/
|
326 |
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static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm,
|
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struct snd_pcm_hw_params *params,
|
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snd_pcm_hw_param_t var, unsigned int val,
|
329 |
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int *dir)
|
330 |
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{
|
331 |
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int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0);
|
332 |
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if (changed < 0)
|
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return changed;
|
334 |
|
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if (params->rmask) {
|
335 |
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int err = snd_pcm_hw_refine(pcm, params);
|
336 |
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if (err < 0)
|
337 |
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return err;
|
338 |
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}
|
339 |
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return snd_pcm_hw_param_value_max(params, var, dir);
|
340 |
|
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}
|
341 |
|
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|
342 |
|
|
static int boundary_sub(int a, int adir,
|
343 |
|
|
int b, int bdir,
|
344 |
|
|
int *c, int *cdir)
|
345 |
|
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{
|
346 |
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adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0);
|
347 |
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bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0);
|
348 |
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*c = a - b;
|
349 |
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*cdir = adir - bdir;
|
350 |
|
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if (*cdir == -2) {
|
351 |
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(*c)--;
|
352 |
|
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} else if (*cdir == 2) {
|
353 |
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(*c)++;
|
354 |
|
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}
|
355 |
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return 0;
|
356 |
|
|
}
|
357 |
|
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|
358 |
|
|
static int boundary_lt(unsigned int a, int adir,
|
359 |
|
|
unsigned int b, int bdir)
|
360 |
|
|
{
|
361 |
|
|
if (adir < 0) {
|
362 |
|
|
a--;
|
363 |
|
|
adir = 1;
|
364 |
|
|
} else if (adir > 0)
|
365 |
|
|
adir = 1;
|
366 |
|
|
if (bdir < 0) {
|
367 |
|
|
b--;
|
368 |
|
|
bdir = 1;
|
369 |
|
|
} else if (bdir > 0)
|
370 |
|
|
bdir = 1;
|
371 |
|
|
return a < b || (a == b && adir < bdir);
|
372 |
|
|
}
|
373 |
|
|
|
374 |
|
|
/* Return 1 if min is nearer to best than max */
|
375 |
|
|
static int boundary_nearer(int min, int mindir,
|
376 |
|
|
int best, int bestdir,
|
377 |
|
|
int max, int maxdir)
|
378 |
|
|
{
|
379 |
|
|
int dmin, dmindir;
|
380 |
|
|
int dmax, dmaxdir;
|
381 |
|
|
boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir);
|
382 |
|
|
boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir);
|
383 |
|
|
return boundary_lt(dmin, dmindir, dmax, dmaxdir);
|
384 |
|
|
}
|
385 |
|
|
|
386 |
|
|
/**
|
387 |
|
|
* snd_pcm_hw_param_near
|
388 |
|
|
* @pcm: PCM instance
|
389 |
|
|
* @params: the hw_params instance
|
390 |
|
|
* @var: parameter to retrieve
|
391 |
|
|
* @best: value to set
|
392 |
|
|
* @dir: pointer to the direction (-1,0,1) or NULL
|
393 |
|
|
*
|
394 |
|
|
* Inside configuration space defined by PARAMS set PAR to the available value
|
395 |
|
|
* nearest to VAL. Reduce configuration space accordingly.
|
396 |
|
|
* This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
|
397 |
|
|
* SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
|
398 |
|
|
* Return the value found.
|
399 |
|
|
*/
|
400 |
|
|
static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
|
401 |
|
|
struct snd_pcm_hw_params *params,
|
402 |
|
|
snd_pcm_hw_param_t var, unsigned int best,
|
403 |
|
|
int *dir)
|
404 |
|
|
{
|
405 |
|
|
struct snd_pcm_hw_params *save = NULL;
|
406 |
|
|
int v;
|
407 |
|
|
unsigned int saved_min;
|
408 |
|
|
int last = 0;
|
409 |
|
|
int min, max;
|
410 |
|
|
int mindir, maxdir;
|
411 |
|
|
int valdir = dir ? *dir : 0;
|
412 |
|
|
/* FIXME */
|
413 |
|
|
if (best > INT_MAX)
|
414 |
|
|
best = INT_MAX;
|
415 |
|
|
min = max = best;
|
416 |
|
|
mindir = maxdir = valdir;
|
417 |
|
|
if (maxdir > 0)
|
418 |
|
|
maxdir = 0;
|
419 |
|
|
else if (maxdir == 0)
|
420 |
|
|
maxdir = -1;
|
421 |
|
|
else {
|
422 |
|
|
maxdir = 1;
|
423 |
|
|
max--;
|
424 |
|
|
}
|
425 |
|
|
save = kmalloc(sizeof(*save), GFP_KERNEL);
|
426 |
|
|
if (save == NULL)
|
427 |
|
|
return -ENOMEM;
|
428 |
|
|
*save = *params;
|
429 |
|
|
saved_min = min;
|
430 |
|
|
min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir);
|
431 |
|
|
if (min >= 0) {
|
432 |
|
|
struct snd_pcm_hw_params *params1;
|
433 |
|
|
if (max < 0)
|
434 |
|
|
goto _end;
|
435 |
|
|
if ((unsigned int)min == saved_min && mindir == valdir)
|
436 |
|
|
goto _end;
|
437 |
|
|
params1 = kmalloc(sizeof(*params1), GFP_KERNEL);
|
438 |
|
|
if (params1 == NULL) {
|
439 |
|
|
kfree(save);
|
440 |
|
|
return -ENOMEM;
|
441 |
|
|
}
|
442 |
|
|
*params1 = *save;
|
443 |
|
|
max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir);
|
444 |
|
|
if (max < 0) {
|
445 |
|
|
kfree(params1);
|
446 |
|
|
goto _end;
|
447 |
|
|
}
|
448 |
|
|
if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) {
|
449 |
|
|
*params = *params1;
|
450 |
|
|
last = 1;
|
451 |
|
|
}
|
452 |
|
|
kfree(params1);
|
453 |
|
|
} else {
|
454 |
|
|
*params = *save;
|
455 |
|
|
max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir);
|
456 |
|
|
snd_assert(max >= 0, return -EINVAL);
|
457 |
|
|
last = 1;
|
458 |
|
|
}
|
459 |
|
|
_end:
|
460 |
|
|
kfree(save);
|
461 |
|
|
if (last)
|
462 |
|
|
v = snd_pcm_hw_param_last(pcm, params, var, dir);
|
463 |
|
|
else
|
464 |
|
|
v = snd_pcm_hw_param_first(pcm, params, var, dir);
|
465 |
|
|
snd_assert(v >= 0, return -EINVAL);
|
466 |
|
|
return v;
|
467 |
|
|
}
|
468 |
|
|
|
469 |
|
|
static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
|
470 |
|
|
snd_pcm_hw_param_t var, unsigned int val,
|
471 |
|
|
int dir)
|
472 |
|
|
{
|
473 |
|
|
int changed;
|
474 |
|
|
if (hw_is_mask(var)) {
|
475 |
|
|
struct snd_mask *m = hw_param_mask(params, var);
|
476 |
|
|
if (val == 0 && dir < 0) {
|
477 |
|
|
changed = -EINVAL;
|
478 |
|
|
snd_mask_none(m);
|
479 |
|
|
} else {
|
480 |
|
|
if (dir > 0)
|
481 |
|
|
val++;
|
482 |
|
|
else if (dir < 0)
|
483 |
|
|
val--;
|
484 |
|
|
changed = snd_mask_refine_set(hw_param_mask(params, var), val);
|
485 |
|
|
}
|
486 |
|
|
} else if (hw_is_interval(var)) {
|
487 |
|
|
struct snd_interval *i = hw_param_interval(params, var);
|
488 |
|
|
if (val == 0 && dir < 0) {
|
489 |
|
|
changed = -EINVAL;
|
490 |
|
|
snd_interval_none(i);
|
491 |
|
|
} else if (dir == 0)
|
492 |
|
|
changed = snd_interval_refine_set(i, val);
|
493 |
|
|
else {
|
494 |
|
|
struct snd_interval t;
|
495 |
|
|
t.openmin = 1;
|
496 |
|
|
t.openmax = 1;
|
497 |
|
|
t.empty = 0;
|
498 |
|
|
t.integer = 0;
|
499 |
|
|
if (dir < 0) {
|
500 |
|
|
t.min = val - 1;
|
501 |
|
|
t.max = val;
|
502 |
|
|
} else {
|
503 |
|
|
t.min = val;
|
504 |
|
|
t.max = val+1;
|
505 |
|
|
}
|
506 |
|
|
changed = snd_interval_refine(i, &t);
|
507 |
|
|
}
|
508 |
|
|
} else
|
509 |
|
|
return -EINVAL;
|
510 |
|
|
if (changed) {
|
511 |
|
|
params->cmask |= 1 << var;
|
512 |
|
|
params->rmask |= 1 << var;
|
513 |
|
|
}
|
514 |
|
|
return changed;
|
515 |
|
|
}
|
516 |
|
|
|
517 |
|
|
/**
|
518 |
|
|
* snd_pcm_hw_param_set
|
519 |
|
|
* @pcm: PCM instance
|
520 |
|
|
* @params: the hw_params instance
|
521 |
|
|
* @var: parameter to retrieve
|
522 |
|
|
* @val: value to set
|
523 |
|
|
* @dir: pointer to the direction (-1,0,1) or NULL
|
524 |
|
|
*
|
525 |
|
|
* Inside configuration space defined by PARAMS remove from PAR all
|
526 |
|
|
* values != VAL. Reduce configuration space accordingly.
|
527 |
|
|
* Return VAL or -EINVAL if the configuration space is empty
|
528 |
|
|
*/
|
529 |
|
|
static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm,
|
530 |
|
|
struct snd_pcm_hw_params *params,
|
531 |
|
|
snd_pcm_hw_param_t var, unsigned int val,
|
532 |
|
|
int dir)
|
533 |
|
|
{
|
534 |
|
|
int changed = _snd_pcm_hw_param_set(params, var, val, dir);
|
535 |
|
|
if (changed < 0)
|
536 |
|
|
return changed;
|
537 |
|
|
if (params->rmask) {
|
538 |
|
|
int err = snd_pcm_hw_refine(pcm, params);
|
539 |
|
|
if (err < 0)
|
540 |
|
|
return err;
|
541 |
|
|
}
|
542 |
|
|
return snd_pcm_hw_param_value(params, var, NULL);
|
543 |
|
|
}
|
544 |
|
|
|
545 |
|
|
static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
|
546 |
|
|
snd_pcm_hw_param_t var)
|
547 |
|
|
{
|
548 |
|
|
int changed;
|
549 |
|
|
changed = snd_interval_setinteger(hw_param_interval(params, var));
|
550 |
|
|
if (changed) {
|
551 |
|
|
params->cmask |= 1 << var;
|
552 |
|
|
params->rmask |= 1 << var;
|
553 |
|
|
}
|
554 |
|
|
return changed;
|
555 |
|
|
}
|
556 |
|
|
|
557 |
|
|
/*
|
558 |
|
|
* plugin
|
559 |
|
|
*/
|
560 |
|
|
|
561 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
562 |
|
|
static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
|
563 |
|
|
{
|
564 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
565 |
|
|
struct snd_pcm_plugin *plugin, *next;
|
566 |
|
|
|
567 |
|
|
plugin = runtime->oss.plugin_first;
|
568 |
|
|
while (plugin) {
|
569 |
|
|
next = plugin->next;
|
570 |
|
|
snd_pcm_plugin_free(plugin);
|
571 |
|
|
plugin = next;
|
572 |
|
|
}
|
573 |
|
|
runtime->oss.plugin_first = runtime->oss.plugin_last = NULL;
|
574 |
|
|
return 0;
|
575 |
|
|
}
|
576 |
|
|
|
577 |
|
|
static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin)
|
578 |
|
|
{
|
579 |
|
|
struct snd_pcm_runtime *runtime = plugin->plug->runtime;
|
580 |
|
|
plugin->next = runtime->oss.plugin_first;
|
581 |
|
|
plugin->prev = NULL;
|
582 |
|
|
if (runtime->oss.plugin_first) {
|
583 |
|
|
runtime->oss.plugin_first->prev = plugin;
|
584 |
|
|
runtime->oss.plugin_first = plugin;
|
585 |
|
|
} else {
|
586 |
|
|
runtime->oss.plugin_last =
|
587 |
|
|
runtime->oss.plugin_first = plugin;
|
588 |
|
|
}
|
589 |
|
|
return 0;
|
590 |
|
|
}
|
591 |
|
|
|
592 |
|
|
int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
|
593 |
|
|
{
|
594 |
|
|
struct snd_pcm_runtime *runtime = plugin->plug->runtime;
|
595 |
|
|
plugin->next = NULL;
|
596 |
|
|
plugin->prev = runtime->oss.plugin_last;
|
597 |
|
|
if (runtime->oss.plugin_last) {
|
598 |
|
|
runtime->oss.plugin_last->next = plugin;
|
599 |
|
|
runtime->oss.plugin_last = plugin;
|
600 |
|
|
} else {
|
601 |
|
|
runtime->oss.plugin_last =
|
602 |
|
|
runtime->oss.plugin_first = plugin;
|
603 |
|
|
}
|
604 |
|
|
return 0;
|
605 |
|
|
}
|
606 |
|
|
#endif /* CONFIG_SND_PCM_OSS_PLUGINS */
|
607 |
|
|
|
608 |
|
|
static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
|
609 |
|
|
{
|
610 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
611 |
|
|
long buffer_size = snd_pcm_lib_buffer_bytes(substream);
|
612 |
|
|
long bytes = frames_to_bytes(runtime, frames);
|
613 |
|
|
if (buffer_size == runtime->oss.buffer_bytes)
|
614 |
|
|
return bytes;
|
615 |
|
|
#if BITS_PER_LONG >= 64
|
616 |
|
|
return runtime->oss.buffer_bytes * bytes / buffer_size;
|
617 |
|
|
#else
|
618 |
|
|
{
|
619 |
|
|
u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
|
620 |
|
|
u32 rem;
|
621 |
|
|
div64_32(&bsize, buffer_size, &rem);
|
622 |
|
|
return (long)bsize;
|
623 |
|
|
}
|
624 |
|
|
#endif
|
625 |
|
|
}
|
626 |
|
|
|
627 |
|
|
static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
|
628 |
|
|
{
|
629 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
630 |
|
|
long buffer_size = snd_pcm_lib_buffer_bytes(substream);
|
631 |
|
|
if (buffer_size == runtime->oss.buffer_bytes)
|
632 |
|
|
return bytes_to_frames(runtime, bytes);
|
633 |
|
|
return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
|
634 |
|
|
}
|
635 |
|
|
|
636 |
|
|
/* define extended formats in the recent OSS versions (if any) */
|
637 |
|
|
/* linear formats */
|
638 |
|
|
#define AFMT_S32_LE 0x00001000
|
639 |
|
|
#define AFMT_S32_BE 0x00002000
|
640 |
|
|
#define AFMT_S24_LE 0x00008000
|
641 |
|
|
#define AFMT_S24_BE 0x00010000
|
642 |
|
|
#define AFMT_S24_PACKED 0x00040000
|
643 |
|
|
|
644 |
|
|
/* other supported formats */
|
645 |
|
|
#define AFMT_FLOAT 0x00004000
|
646 |
|
|
#define AFMT_SPDIF_RAW 0x00020000
|
647 |
|
|
|
648 |
|
|
/* unsupported formats */
|
649 |
|
|
#define AFMT_AC3 0x00000400
|
650 |
|
|
#define AFMT_VORBIS 0x00000800
|
651 |
|
|
|
652 |
|
|
static int snd_pcm_oss_format_from(int format)
|
653 |
|
|
{
|
654 |
|
|
switch (format) {
|
655 |
|
|
case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW;
|
656 |
|
|
case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW;
|
657 |
|
|
case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM;
|
658 |
|
|
case AFMT_U8: return SNDRV_PCM_FORMAT_U8;
|
659 |
|
|
case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE;
|
660 |
|
|
case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE;
|
661 |
|
|
case AFMT_S8: return SNDRV_PCM_FORMAT_S8;
|
662 |
|
|
case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE;
|
663 |
|
|
case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE;
|
664 |
|
|
case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG;
|
665 |
|
|
case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE;
|
666 |
|
|
case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE;
|
667 |
|
|
case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE;
|
668 |
|
|
case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE;
|
669 |
|
|
case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE;
|
670 |
|
|
case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT;
|
671 |
|
|
case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME;
|
672 |
|
|
default: return SNDRV_PCM_FORMAT_U8;
|
673 |
|
|
}
|
674 |
|
|
}
|
675 |
|
|
|
676 |
|
|
static int snd_pcm_oss_format_to(int format)
|
677 |
|
|
{
|
678 |
|
|
switch (format) {
|
679 |
|
|
case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW;
|
680 |
|
|
case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW;
|
681 |
|
|
case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
|
682 |
|
|
case SNDRV_PCM_FORMAT_U8: return AFMT_U8;
|
683 |
|
|
case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE;
|
684 |
|
|
case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE;
|
685 |
|
|
case SNDRV_PCM_FORMAT_S8: return AFMT_S8;
|
686 |
|
|
case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE;
|
687 |
|
|
case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE;
|
688 |
|
|
case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG;
|
689 |
|
|
case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE;
|
690 |
|
|
case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE;
|
691 |
|
|
case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE;
|
692 |
|
|
case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE;
|
693 |
|
|
case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED;
|
694 |
|
|
case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT;
|
695 |
|
|
case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW;
|
696 |
|
|
default: return -EINVAL;
|
697 |
|
|
}
|
698 |
|
|
}
|
699 |
|
|
|
700 |
|
|
static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
|
701 |
|
|
struct snd_pcm_hw_params *oss_params,
|
702 |
|
|
struct snd_pcm_hw_params *slave_params)
|
703 |
|
|
{
|
704 |
|
|
size_t s;
|
705 |
|
|
size_t oss_buffer_size, oss_period_size, oss_periods;
|
706 |
|
|
size_t min_period_size, max_period_size;
|
707 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
708 |
|
|
size_t oss_frame_size;
|
709 |
|
|
|
710 |
|
|
oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
|
711 |
|
|
params_channels(oss_params) / 8;
|
712 |
|
|
|
713 |
|
|
oss_buffer_size = snd_pcm_plug_client_size(substream,
|
714 |
|
|
snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
|
715 |
|
|
oss_buffer_size = 1 << ld2(oss_buffer_size);
|
716 |
|
|
if (atomic_read(&substream->mmap_count)) {
|
717 |
|
|
if (oss_buffer_size > runtime->oss.mmap_bytes)
|
718 |
|
|
oss_buffer_size = runtime->oss.mmap_bytes;
|
719 |
|
|
}
|
720 |
|
|
|
721 |
|
|
if (substream->oss.setup.period_size > 16)
|
722 |
|
|
oss_period_size = substream->oss.setup.period_size;
|
723 |
|
|
else if (runtime->oss.fragshift) {
|
724 |
|
|
oss_period_size = 1 << runtime->oss.fragshift;
|
725 |
|
|
if (oss_period_size > oss_buffer_size / 2)
|
726 |
|
|
oss_period_size = oss_buffer_size / 2;
|
727 |
|
|
} else {
|
728 |
|
|
int sd;
|
729 |
|
|
size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8;
|
730 |
|
|
|
731 |
|
|
oss_period_size = oss_buffer_size;
|
732 |
|
|
do {
|
733 |
|
|
oss_period_size /= 2;
|
734 |
|
|
} while (oss_period_size > bytes_per_sec);
|
735 |
|
|
if (runtime->oss.subdivision == 0) {
|
736 |
|
|
sd = 4;
|
737 |
|
|
if (oss_period_size / sd > 4096)
|
738 |
|
|
sd *= 2;
|
739 |
|
|
if (oss_period_size / sd < 4096)
|
740 |
|
|
sd = 1;
|
741 |
|
|
} else
|
742 |
|
|
sd = runtime->oss.subdivision;
|
743 |
|
|
oss_period_size /= sd;
|
744 |
|
|
if (oss_period_size < 16)
|
745 |
|
|
oss_period_size = 16;
|
746 |
|
|
}
|
747 |
|
|
|
748 |
|
|
min_period_size = snd_pcm_plug_client_size(substream,
|
749 |
|
|
snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
|
750 |
|
|
min_period_size *= oss_frame_size;
|
751 |
|
|
min_period_size = 1 << (ld2(min_period_size - 1) + 1);
|
752 |
|
|
if (oss_period_size < min_period_size)
|
753 |
|
|
oss_period_size = min_period_size;
|
754 |
|
|
|
755 |
|
|
max_period_size = snd_pcm_plug_client_size(substream,
|
756 |
|
|
snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
|
757 |
|
|
max_period_size *= oss_frame_size;
|
758 |
|
|
max_period_size = 1 << ld2(max_period_size);
|
759 |
|
|
if (oss_period_size > max_period_size)
|
760 |
|
|
oss_period_size = max_period_size;
|
761 |
|
|
|
762 |
|
|
oss_periods = oss_buffer_size / oss_period_size;
|
763 |
|
|
|
764 |
|
|
if (substream->oss.setup.periods > 1)
|
765 |
|
|
oss_periods = substream->oss.setup.periods;
|
766 |
|
|
|
767 |
|
|
s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
|
768 |
|
|
if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
|
769 |
|
|
s = runtime->oss.maxfrags;
|
770 |
|
|
if (oss_periods > s)
|
771 |
|
|
oss_periods = s;
|
772 |
|
|
|
773 |
|
|
s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
|
774 |
|
|
if (s < 2)
|
775 |
|
|
s = 2;
|
776 |
|
|
if (oss_periods < s)
|
777 |
|
|
oss_periods = s;
|
778 |
|
|
|
779 |
|
|
while (oss_period_size * oss_periods > oss_buffer_size)
|
780 |
|
|
oss_period_size /= 2;
|
781 |
|
|
|
782 |
|
|
snd_assert(oss_period_size >= 16, return -EINVAL);
|
783 |
|
|
runtime->oss.period_bytes = oss_period_size;
|
784 |
|
|
runtime->oss.period_frames = 1;
|
785 |
|
|
runtime->oss.periods = oss_periods;
|
786 |
|
|
return 0;
|
787 |
|
|
}
|
788 |
|
|
|
789 |
|
|
static int choose_rate(struct snd_pcm_substream *substream,
|
790 |
|
|
struct snd_pcm_hw_params *params, unsigned int best_rate)
|
791 |
|
|
{
|
792 |
|
|
struct snd_interval *it;
|
793 |
|
|
struct snd_pcm_hw_params *save;
|
794 |
|
|
unsigned int rate, prev;
|
795 |
|
|
|
796 |
|
|
save = kmalloc(sizeof(*save), GFP_KERNEL);
|
797 |
|
|
if (save == NULL)
|
798 |
|
|
return -ENOMEM;
|
799 |
|
|
*save = *params;
|
800 |
|
|
it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE);
|
801 |
|
|
|
802 |
|
|
/* try multiples of the best rate */
|
803 |
|
|
rate = best_rate;
|
804 |
|
|
for (;;) {
|
805 |
|
|
if (it->max < rate || (it->max == rate && it->openmax))
|
806 |
|
|
break;
|
807 |
|
|
if (it->min < rate || (it->min == rate && !it->openmin)) {
|
808 |
|
|
int ret;
|
809 |
|
|
ret = snd_pcm_hw_param_set(substream, params,
|
810 |
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
811 |
|
|
rate, 0);
|
812 |
|
|
if (ret == (int)rate) {
|
813 |
|
|
kfree(save);
|
814 |
|
|
return rate;
|
815 |
|
|
}
|
816 |
|
|
*params = *save;
|
817 |
|
|
}
|
818 |
|
|
prev = rate;
|
819 |
|
|
rate += best_rate;
|
820 |
|
|
if (rate <= prev)
|
821 |
|
|
break;
|
822 |
|
|
}
|
823 |
|
|
|
824 |
|
|
/* not found, use the nearest rate */
|
825 |
|
|
kfree(save);
|
826 |
|
|
return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
|
827 |
|
|
}
|
828 |
|
|
|
829 |
|
|
static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
|
830 |
|
|
{
|
831 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
832 |
|
|
struct snd_pcm_hw_params *params, *sparams;
|
833 |
|
|
struct snd_pcm_sw_params *sw_params;
|
834 |
|
|
ssize_t oss_buffer_size, oss_period_size;
|
835 |
|
|
size_t oss_frame_size;
|
836 |
|
|
int err;
|
837 |
|
|
int direct;
|
838 |
|
|
int format, sformat, n;
|
839 |
|
|
struct snd_mask sformat_mask;
|
840 |
|
|
struct snd_mask mask;
|
841 |
|
|
|
842 |
|
|
if (mutex_lock_interruptible(&runtime->oss.params_lock))
|
843 |
|
|
return -EINTR;
|
844 |
|
|
sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
|
845 |
|
|
params = kmalloc(sizeof(*params), GFP_KERNEL);
|
846 |
|
|
sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
|
847 |
|
|
if (!sw_params || !params || !sparams) {
|
848 |
|
|
snd_printd("No memory\n");
|
849 |
|
|
err = -ENOMEM;
|
850 |
|
|
goto failure;
|
851 |
|
|
}
|
852 |
|
|
|
853 |
|
|
if (atomic_read(&substream->mmap_count))
|
854 |
|
|
direct = 1;
|
855 |
|
|
else
|
856 |
|
|
direct = substream->oss.setup.direct;
|
857 |
|
|
|
858 |
|
|
_snd_pcm_hw_params_any(sparams);
|
859 |
|
|
_snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS);
|
860 |
|
|
_snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0);
|
861 |
|
|
snd_mask_none(&mask);
|
862 |
|
|
if (atomic_read(&substream->mmap_count))
|
863 |
|
|
snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED);
|
864 |
|
|
else {
|
865 |
|
|
snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED);
|
866 |
|
|
if (!direct)
|
867 |
|
|
snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED);
|
868 |
|
|
}
|
869 |
|
|
err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask);
|
870 |
|
|
if (err < 0) {
|
871 |
|
|
snd_printd("No usable accesses\n");
|
872 |
|
|
err = -EINVAL;
|
873 |
|
|
goto failure;
|
874 |
|
|
}
|
875 |
|
|
choose_rate(substream, sparams, runtime->oss.rate);
|
876 |
|
|
snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
|
877 |
|
|
|
878 |
|
|
format = snd_pcm_oss_format_from(runtime->oss.format);
|
879 |
|
|
|
880 |
|
|
sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT);
|
881 |
|
|
if (direct)
|
882 |
|
|
sformat = format;
|
883 |
|
|
else
|
884 |
|
|
sformat = snd_pcm_plug_slave_format(format, &sformat_mask);
|
885 |
|
|
|
886 |
|
|
if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) {
|
887 |
|
|
for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) {
|
888 |
|
|
if (snd_mask_test(&sformat_mask, sformat) &&
|
889 |
|
|
snd_pcm_oss_format_to(sformat) >= 0)
|
890 |
|
|
break;
|
891 |
|
|
}
|
892 |
|
|
if (sformat > SNDRV_PCM_FORMAT_LAST) {
|
893 |
|
|
snd_printd("Cannot find a format!!!\n");
|
894 |
|
|
err = -EINVAL;
|
895 |
|
|
goto failure;
|
896 |
|
|
}
|
897 |
|
|
}
|
898 |
|
|
err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0);
|
899 |
|
|
snd_assert(err >= 0, goto failure);
|
900 |
|
|
|
901 |
|
|
if (direct) {
|
902 |
|
|
memcpy(params, sparams, sizeof(*params));
|
903 |
|
|
} else {
|
904 |
|
|
_snd_pcm_hw_params_any(params);
|
905 |
|
|
_snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS,
|
906 |
|
|
SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0);
|
907 |
|
|
_snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT,
|
908 |
|
|
snd_pcm_oss_format_from(runtime->oss.format), 0);
|
909 |
|
|
_snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS,
|
910 |
|
|
runtime->oss.channels, 0);
|
911 |
|
|
_snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE,
|
912 |
|
|
runtime->oss.rate, 0);
|
913 |
|
|
pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n",
|
914 |
|
|
params_access(params), params_format(params),
|
915 |
|
|
params_channels(params), params_rate(params));
|
916 |
|
|
}
|
917 |
|
|
pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n",
|
918 |
|
|
params_access(sparams), params_format(sparams),
|
919 |
|
|
params_channels(sparams), params_rate(sparams));
|
920 |
|
|
|
921 |
|
|
oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
|
922 |
|
|
params_channels(params) / 8;
|
923 |
|
|
|
924 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
925 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
926 |
|
|
if (!direct) {
|
927 |
|
|
/* add necessary plugins */
|
928 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
929 |
|
|
if ((err = snd_pcm_plug_format_plugins(substream,
|
930 |
|
|
params,
|
931 |
|
|
sparams)) < 0) {
|
932 |
|
|
snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err);
|
933 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
934 |
|
|
goto failure;
|
935 |
|
|
}
|
936 |
|
|
if (runtime->oss.plugin_first) {
|
937 |
|
|
struct snd_pcm_plugin *plugin;
|
938 |
|
|
if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) {
|
939 |
|
|
snd_printd("snd_pcm_plugin_build_io failed: %i\n", err);
|
940 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
941 |
|
|
goto failure;
|
942 |
|
|
}
|
943 |
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
944 |
|
|
err = snd_pcm_plugin_append(plugin);
|
945 |
|
|
} else {
|
946 |
|
|
err = snd_pcm_plugin_insert(plugin);
|
947 |
|
|
}
|
948 |
|
|
if (err < 0) {
|
949 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
950 |
|
|
goto failure;
|
951 |
|
|
}
|
952 |
|
|
}
|
953 |
|
|
}
|
954 |
|
|
#endif
|
955 |
|
|
|
956 |
|
|
err = snd_pcm_oss_period_size(substream, params, sparams);
|
957 |
|
|
if (err < 0)
|
958 |
|
|
goto failure;
|
959 |
|
|
|
960 |
|
|
n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
|
961 |
|
|
err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
|
962 |
|
|
snd_assert(err >= 0, goto failure);
|
963 |
|
|
|
964 |
|
|
err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
|
965 |
|
|
runtime->oss.periods, NULL);
|
966 |
|
|
snd_assert(err >= 0, goto failure);
|
967 |
|
|
|
968 |
|
|
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
|
969 |
|
|
|
970 |
|
|
if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) {
|
971 |
|
|
snd_printd("HW_PARAMS failed: %i\n", err);
|
972 |
|
|
goto failure;
|
973 |
|
|
}
|
974 |
|
|
|
975 |
|
|
memset(sw_params, 0, sizeof(*sw_params));
|
976 |
|
|
if (runtime->oss.trigger) {
|
977 |
|
|
sw_params->start_threshold = 1;
|
978 |
|
|
} else {
|
979 |
|
|
sw_params->start_threshold = runtime->boundary;
|
980 |
|
|
}
|
981 |
|
|
if (atomic_read(&substream->mmap_count) ||
|
982 |
|
|
substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
983 |
|
|
sw_params->stop_threshold = runtime->boundary;
|
984 |
|
|
else
|
985 |
|
|
sw_params->stop_threshold = runtime->buffer_size;
|
986 |
|
|
sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
|
987 |
|
|
sw_params->period_step = 1;
|
988 |
|
|
sw_params->sleep_min = 0;
|
989 |
|
|
sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
|
990 |
|
|
1 : runtime->period_size;
|
991 |
|
|
sw_params->xfer_align = 1;
|
992 |
|
|
if (atomic_read(&substream->mmap_count) ||
|
993 |
|
|
substream->oss.setup.nosilence) {
|
994 |
|
|
sw_params->silence_threshold = 0;
|
995 |
|
|
sw_params->silence_size = 0;
|
996 |
|
|
} else {
|
997 |
|
|
snd_pcm_uframes_t frames;
|
998 |
|
|
frames = runtime->period_size + 16;
|
999 |
|
|
if (frames > runtime->buffer_size)
|
1000 |
|
|
frames = runtime->buffer_size;
|
1001 |
|
|
sw_params->silence_threshold = frames;
|
1002 |
|
|
sw_params->silence_size = frames;
|
1003 |
|
|
}
|
1004 |
|
|
|
1005 |
|
|
if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) {
|
1006 |
|
|
snd_printd("SW_PARAMS failed: %i\n", err);
|
1007 |
|
|
goto failure;
|
1008 |
|
|
}
|
1009 |
|
|
|
1010 |
|
|
runtime->oss.periods = params_periods(sparams);
|
1011 |
|
|
oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
|
1012 |
|
|
snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure);
|
1013 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
1014 |
|
|
if (runtime->oss.plugin_first) {
|
1015 |
|
|
err = snd_pcm_plug_alloc(substream, oss_period_size);
|
1016 |
|
|
if (err < 0)
|
1017 |
|
|
goto failure;
|
1018 |
|
|
}
|
1019 |
|
|
#endif
|
1020 |
|
|
oss_period_size *= oss_frame_size;
|
1021 |
|
|
|
1022 |
|
|
oss_buffer_size = oss_period_size * runtime->oss.periods;
|
1023 |
|
|
snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure);
|
1024 |
|
|
|
1025 |
|
|
runtime->oss.period_bytes = oss_period_size;
|
1026 |
|
|
runtime->oss.buffer_bytes = oss_buffer_size;
|
1027 |
|
|
|
1028 |
|
|
pdprintf("oss: period bytes = %i, buffer bytes = %i\n",
|
1029 |
|
|
runtime->oss.period_bytes,
|
1030 |
|
|
runtime->oss.buffer_bytes);
|
1031 |
|
|
pdprintf("slave: period_size = %i, buffer_size = %i\n",
|
1032 |
|
|
params_period_size(sparams),
|
1033 |
|
|
params_buffer_size(sparams));
|
1034 |
|
|
|
1035 |
|
|
runtime->oss.format = snd_pcm_oss_format_to(params_format(params));
|
1036 |
|
|
runtime->oss.channels = params_channels(params);
|
1037 |
|
|
runtime->oss.rate = params_rate(params);
|
1038 |
|
|
|
1039 |
|
|
runtime->oss.params = 0;
|
1040 |
|
|
runtime->oss.prepare = 1;
|
1041 |
|
|
vfree(runtime->oss.buffer);
|
1042 |
|
|
runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
|
1043 |
|
|
runtime->oss.buffer_used = 0;
|
1044 |
|
|
if (runtime->dma_area)
|
1045 |
|
|
snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes));
|
1046 |
|
|
|
1047 |
|
|
runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size);
|
1048 |
|
|
|
1049 |
|
|
err = 0;
|
1050 |
|
|
failure:
|
1051 |
|
|
kfree(sw_params);
|
1052 |
|
|
kfree(params);
|
1053 |
|
|
kfree(sparams);
|
1054 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1055 |
|
|
return err;
|
1056 |
|
|
}
|
1057 |
|
|
|
1058 |
|
|
static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream)
|
1059 |
|
|
{
|
1060 |
|
|
int idx, err;
|
1061 |
|
|
struct snd_pcm_substream *asubstream = NULL, *substream;
|
1062 |
|
|
|
1063 |
|
|
for (idx = 0; idx < 2; idx++) {
|
1064 |
|
|
substream = pcm_oss_file->streams[idx];
|
1065 |
|
|
if (substream == NULL)
|
1066 |
|
|
continue;
|
1067 |
|
|
if (asubstream == NULL)
|
1068 |
|
|
asubstream = substream;
|
1069 |
|
|
if (substream->runtime->oss.params) {
|
1070 |
|
|
err = snd_pcm_oss_change_params(substream);
|
1071 |
|
|
if (err < 0)
|
1072 |
|
|
return err;
|
1073 |
|
|
}
|
1074 |
|
|
}
|
1075 |
|
|
snd_assert(asubstream != NULL, return -EIO);
|
1076 |
|
|
if (r_substream)
|
1077 |
|
|
*r_substream = asubstream;
|
1078 |
|
|
return 0;
|
1079 |
|
|
}
|
1080 |
|
|
|
1081 |
|
|
static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
|
1082 |
|
|
{
|
1083 |
|
|
int err;
|
1084 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1085 |
|
|
|
1086 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
|
1087 |
|
|
if (err < 0) {
|
1088 |
|
|
snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n");
|
1089 |
|
|
return err;
|
1090 |
|
|
}
|
1091 |
|
|
runtime->oss.prepare = 0;
|
1092 |
|
|
runtime->oss.prev_hw_ptr_interrupt = 0;
|
1093 |
|
|
runtime->oss.period_ptr = 0;
|
1094 |
|
|
runtime->oss.buffer_used = 0;
|
1095 |
|
|
|
1096 |
|
|
return 0;
|
1097 |
|
|
}
|
1098 |
|
|
|
1099 |
|
|
static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
|
1100 |
|
|
{
|
1101 |
|
|
struct snd_pcm_runtime *runtime;
|
1102 |
|
|
int err;
|
1103 |
|
|
|
1104 |
|
|
if (substream == NULL)
|
1105 |
|
|
return 0;
|
1106 |
|
|
runtime = substream->runtime;
|
1107 |
|
|
if (runtime->oss.params) {
|
1108 |
|
|
err = snd_pcm_oss_change_params(substream);
|
1109 |
|
|
if (err < 0)
|
1110 |
|
|
return err;
|
1111 |
|
|
}
|
1112 |
|
|
if (runtime->oss.prepare) {
|
1113 |
|
|
err = snd_pcm_oss_prepare(substream);
|
1114 |
|
|
if (err < 0)
|
1115 |
|
|
return err;
|
1116 |
|
|
}
|
1117 |
|
|
return 0;
|
1118 |
|
|
}
|
1119 |
|
|
|
1120 |
|
|
static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay)
|
1121 |
|
|
{
|
1122 |
|
|
struct snd_pcm_runtime *runtime;
|
1123 |
|
|
snd_pcm_uframes_t frames;
|
1124 |
|
|
int err = 0;
|
1125 |
|
|
|
1126 |
|
|
while (1) {
|
1127 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay);
|
1128 |
|
|
if (err < 0)
|
1129 |
|
|
break;
|
1130 |
|
|
runtime = substream->runtime;
|
1131 |
|
|
if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size)
|
1132 |
|
|
break;
|
1133 |
|
|
/* in case of overrun, skip whole periods like OSS/Linux driver does */
|
1134 |
|
|
/* until avail(delay) <= buffer_size */
|
1135 |
|
|
frames = (*delay - runtime->buffer_size) + runtime->period_size - 1;
|
1136 |
|
|
frames /= runtime->period_size;
|
1137 |
|
|
frames *= runtime->period_size;
|
1138 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames);
|
1139 |
|
|
if (err < 0)
|
1140 |
|
|
break;
|
1141 |
|
|
}
|
1142 |
|
|
return err;
|
1143 |
|
|
}
|
1144 |
|
|
|
1145 |
|
|
snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
|
1146 |
|
|
{
|
1147 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1148 |
|
|
int ret;
|
1149 |
|
|
while (1) {
|
1150 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
|
1151 |
|
|
runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
|
1152 |
|
|
#ifdef OSS_DEBUG
|
1153 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
|
1154 |
|
|
printk("pcm_oss: write: recovering from XRUN\n");
|
1155 |
|
|
else
|
1156 |
|
|
printk("pcm_oss: write: recovering from SUSPEND\n");
|
1157 |
|
|
#endif
|
1158 |
|
|
ret = snd_pcm_oss_prepare(substream);
|
1159 |
|
|
if (ret < 0)
|
1160 |
|
|
break;
|
1161 |
|
|
}
|
1162 |
|
|
if (in_kernel) {
|
1163 |
|
|
mm_segment_t fs;
|
1164 |
|
|
fs = snd_enter_user();
|
1165 |
|
|
ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
|
1166 |
|
|
snd_leave_user(fs);
|
1167 |
|
|
} else {
|
1168 |
|
|
ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
|
1169 |
|
|
}
|
1170 |
|
|
if (ret != -EPIPE && ret != -ESTRPIPE)
|
1171 |
|
|
break;
|
1172 |
|
|
/* test, if we can't store new data, because the stream */
|
1173 |
|
|
/* has not been started */
|
1174 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
|
1175 |
|
|
return -EAGAIN;
|
1176 |
|
|
}
|
1177 |
|
|
return ret;
|
1178 |
|
|
}
|
1179 |
|
|
|
1180 |
|
|
snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
|
1181 |
|
|
{
|
1182 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1183 |
|
|
snd_pcm_sframes_t delay;
|
1184 |
|
|
int ret;
|
1185 |
|
|
while (1) {
|
1186 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
|
1187 |
|
|
runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
|
1188 |
|
|
#ifdef OSS_DEBUG
|
1189 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
|
1190 |
|
|
printk("pcm_oss: read: recovering from XRUN\n");
|
1191 |
|
|
else
|
1192 |
|
|
printk("pcm_oss: read: recovering from SUSPEND\n");
|
1193 |
|
|
#endif
|
1194 |
|
|
ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
|
1195 |
|
|
if (ret < 0)
|
1196 |
|
|
break;
|
1197 |
|
|
} else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
|
1198 |
|
|
ret = snd_pcm_oss_prepare(substream);
|
1199 |
|
|
if (ret < 0)
|
1200 |
|
|
break;
|
1201 |
|
|
}
|
1202 |
|
|
ret = snd_pcm_oss_capture_position_fixup(substream, &delay);
|
1203 |
|
|
if (ret < 0)
|
1204 |
|
|
break;
|
1205 |
|
|
if (in_kernel) {
|
1206 |
|
|
mm_segment_t fs;
|
1207 |
|
|
fs = snd_enter_user();
|
1208 |
|
|
ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
|
1209 |
|
|
snd_leave_user(fs);
|
1210 |
|
|
} else {
|
1211 |
|
|
ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
|
1212 |
|
|
}
|
1213 |
|
|
if (ret == -EPIPE) {
|
1214 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
|
1215 |
|
|
ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
|
1216 |
|
|
if (ret < 0)
|
1217 |
|
|
break;
|
1218 |
|
|
}
|
1219 |
|
|
continue;
|
1220 |
|
|
}
|
1221 |
|
|
if (ret != -ESTRPIPE)
|
1222 |
|
|
break;
|
1223 |
|
|
}
|
1224 |
|
|
return ret;
|
1225 |
|
|
}
|
1226 |
|
|
|
1227 |
|
|
snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
|
1228 |
|
|
{
|
1229 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1230 |
|
|
int ret;
|
1231 |
|
|
while (1) {
|
1232 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
|
1233 |
|
|
runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
|
1234 |
|
|
#ifdef OSS_DEBUG
|
1235 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
|
1236 |
|
|
printk("pcm_oss: writev: recovering from XRUN\n");
|
1237 |
|
|
else
|
1238 |
|
|
printk("pcm_oss: writev: recovering from SUSPEND\n");
|
1239 |
|
|
#endif
|
1240 |
|
|
ret = snd_pcm_oss_prepare(substream);
|
1241 |
|
|
if (ret < 0)
|
1242 |
|
|
break;
|
1243 |
|
|
}
|
1244 |
|
|
if (in_kernel) {
|
1245 |
|
|
mm_segment_t fs;
|
1246 |
|
|
fs = snd_enter_user();
|
1247 |
|
|
ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
|
1248 |
|
|
snd_leave_user(fs);
|
1249 |
|
|
} else {
|
1250 |
|
|
ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
|
1251 |
|
|
}
|
1252 |
|
|
if (ret != -EPIPE && ret != -ESTRPIPE)
|
1253 |
|
|
break;
|
1254 |
|
|
|
1255 |
|
|
/* test, if we can't store new data, because the stream */
|
1256 |
|
|
/* has not been started */
|
1257 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
|
1258 |
|
|
return -EAGAIN;
|
1259 |
|
|
}
|
1260 |
|
|
return ret;
|
1261 |
|
|
}
|
1262 |
|
|
|
1263 |
|
|
snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
|
1264 |
|
|
{
|
1265 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1266 |
|
|
int ret;
|
1267 |
|
|
while (1) {
|
1268 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
|
1269 |
|
|
runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
|
1270 |
|
|
#ifdef OSS_DEBUG
|
1271 |
|
|
if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
|
1272 |
|
|
printk("pcm_oss: readv: recovering from XRUN\n");
|
1273 |
|
|
else
|
1274 |
|
|
printk("pcm_oss: readv: recovering from SUSPEND\n");
|
1275 |
|
|
#endif
|
1276 |
|
|
ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
|
1277 |
|
|
if (ret < 0)
|
1278 |
|
|
break;
|
1279 |
|
|
} else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
|
1280 |
|
|
ret = snd_pcm_oss_prepare(substream);
|
1281 |
|
|
if (ret < 0)
|
1282 |
|
|
break;
|
1283 |
|
|
}
|
1284 |
|
|
if (in_kernel) {
|
1285 |
|
|
mm_segment_t fs;
|
1286 |
|
|
fs = snd_enter_user();
|
1287 |
|
|
ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
|
1288 |
|
|
snd_leave_user(fs);
|
1289 |
|
|
} else {
|
1290 |
|
|
ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
|
1291 |
|
|
}
|
1292 |
|
|
if (ret != -EPIPE && ret != -ESTRPIPE)
|
1293 |
|
|
break;
|
1294 |
|
|
}
|
1295 |
|
|
return ret;
|
1296 |
|
|
}
|
1297 |
|
|
|
1298 |
|
|
static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel)
|
1299 |
|
|
{
|
1300 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1301 |
|
|
snd_pcm_sframes_t frames, frames1;
|
1302 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
1303 |
|
|
if (runtime->oss.plugin_first) {
|
1304 |
|
|
struct snd_pcm_plugin_channel *channels;
|
1305 |
|
|
size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
|
1306 |
|
|
if (!in_kernel) {
|
1307 |
|
|
if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes))
|
1308 |
|
|
return -EFAULT;
|
1309 |
|
|
buf = runtime->oss.buffer;
|
1310 |
|
|
}
|
1311 |
|
|
frames = bytes / oss_frame_bytes;
|
1312 |
|
|
frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels);
|
1313 |
|
|
if (frames1 < 0)
|
1314 |
|
|
return frames1;
|
1315 |
|
|
frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1);
|
1316 |
|
|
if (frames1 <= 0)
|
1317 |
|
|
return frames1;
|
1318 |
|
|
bytes = frames1 * oss_frame_bytes;
|
1319 |
|
|
} else
|
1320 |
|
|
#endif
|
1321 |
|
|
{
|
1322 |
|
|
frames = bytes_to_frames(runtime, bytes);
|
1323 |
|
|
frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
|
1324 |
|
|
if (frames1 <= 0)
|
1325 |
|
|
return frames1;
|
1326 |
|
|
bytes = frames_to_bytes(runtime, frames1);
|
1327 |
|
|
}
|
1328 |
|
|
return bytes;
|
1329 |
|
|
}
|
1330 |
|
|
|
1331 |
|
|
static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes)
|
1332 |
|
|
{
|
1333 |
|
|
size_t xfer = 0;
|
1334 |
|
|
ssize_t tmp;
|
1335 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1336 |
|
|
|
1337 |
|
|
if (atomic_read(&substream->mmap_count))
|
1338 |
|
|
return -ENXIO;
|
1339 |
|
|
|
1340 |
|
|
if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
|
1341 |
|
|
return tmp;
|
1342 |
|
|
mutex_lock(&runtime->oss.params_lock);
|
1343 |
|
|
while (bytes > 0) {
|
1344 |
|
|
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
|
1345 |
|
|
tmp = bytes;
|
1346 |
|
|
if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
|
1347 |
|
|
tmp = runtime->oss.period_bytes - runtime->oss.buffer_used;
|
1348 |
|
|
if (tmp > 0) {
|
1349 |
|
|
if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) {
|
1350 |
|
|
tmp = -EFAULT;
|
1351 |
|
|
goto err;
|
1352 |
|
|
}
|
1353 |
|
|
}
|
1354 |
|
|
runtime->oss.buffer_used += tmp;
|
1355 |
|
|
buf += tmp;
|
1356 |
|
|
bytes -= tmp;
|
1357 |
|
|
xfer += tmp;
|
1358 |
|
|
if (substream->oss.setup.partialfrag ||
|
1359 |
|
|
runtime->oss.buffer_used == runtime->oss.period_bytes) {
|
1360 |
|
|
tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr,
|
1361 |
|
|
runtime->oss.buffer_used - runtime->oss.period_ptr, 1);
|
1362 |
|
|
if (tmp <= 0)
|
1363 |
|
|
goto err;
|
1364 |
|
|
runtime->oss.bytes += tmp;
|
1365 |
|
|
runtime->oss.period_ptr += tmp;
|
1366 |
|
|
runtime->oss.period_ptr %= runtime->oss.period_bytes;
|
1367 |
|
|
if (runtime->oss.period_ptr == 0 ||
|
1368 |
|
|
runtime->oss.period_ptr == runtime->oss.buffer_used)
|
1369 |
|
|
runtime->oss.buffer_used = 0;
|
1370 |
|
|
else if ((substream->f_flags & O_NONBLOCK) != 0) {
|
1371 |
|
|
tmp = -EAGAIN;
|
1372 |
|
|
goto err;
|
1373 |
|
|
}
|
1374 |
|
|
}
|
1375 |
|
|
} else {
|
1376 |
|
|
tmp = snd_pcm_oss_write2(substream,
|
1377 |
|
|
(const char __force *)buf,
|
1378 |
|
|
runtime->oss.period_bytes, 0);
|
1379 |
|
|
if (tmp <= 0)
|
1380 |
|
|
goto err;
|
1381 |
|
|
runtime->oss.bytes += tmp;
|
1382 |
|
|
buf += tmp;
|
1383 |
|
|
bytes -= tmp;
|
1384 |
|
|
xfer += tmp;
|
1385 |
|
|
if ((substream->f_flags & O_NONBLOCK) != 0 &&
|
1386 |
|
|
tmp != runtime->oss.period_bytes)
|
1387 |
|
|
break;
|
1388 |
|
|
}
|
1389 |
|
|
}
|
1390 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1391 |
|
|
return xfer;
|
1392 |
|
|
|
1393 |
|
|
err:
|
1394 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1395 |
|
|
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
|
1396 |
|
|
}
|
1397 |
|
|
|
1398 |
|
|
static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel)
|
1399 |
|
|
{
|
1400 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1401 |
|
|
snd_pcm_sframes_t frames, frames1;
|
1402 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
1403 |
|
|
char __user *final_dst = (char __user *)buf;
|
1404 |
|
|
if (runtime->oss.plugin_first) {
|
1405 |
|
|
struct snd_pcm_plugin_channel *channels;
|
1406 |
|
|
size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8;
|
1407 |
|
|
if (!in_kernel)
|
1408 |
|
|
buf = runtime->oss.buffer;
|
1409 |
|
|
frames = bytes / oss_frame_bytes;
|
1410 |
|
|
frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels);
|
1411 |
|
|
if (frames1 < 0)
|
1412 |
|
|
return frames1;
|
1413 |
|
|
frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1);
|
1414 |
|
|
if (frames1 <= 0)
|
1415 |
|
|
return frames1;
|
1416 |
|
|
bytes = frames1 * oss_frame_bytes;
|
1417 |
|
|
if (!in_kernel && copy_to_user(final_dst, buf, bytes))
|
1418 |
|
|
return -EFAULT;
|
1419 |
|
|
} else
|
1420 |
|
|
#endif
|
1421 |
|
|
{
|
1422 |
|
|
frames = bytes_to_frames(runtime, bytes);
|
1423 |
|
|
frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
|
1424 |
|
|
if (frames1 <= 0)
|
1425 |
|
|
return frames1;
|
1426 |
|
|
bytes = frames_to_bytes(runtime, frames1);
|
1427 |
|
|
}
|
1428 |
|
|
return bytes;
|
1429 |
|
|
}
|
1430 |
|
|
|
1431 |
|
|
static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes)
|
1432 |
|
|
{
|
1433 |
|
|
size_t xfer = 0;
|
1434 |
|
|
ssize_t tmp;
|
1435 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1436 |
|
|
|
1437 |
|
|
if (atomic_read(&substream->mmap_count))
|
1438 |
|
|
return -ENXIO;
|
1439 |
|
|
|
1440 |
|
|
if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
|
1441 |
|
|
return tmp;
|
1442 |
|
|
mutex_lock(&runtime->oss.params_lock);
|
1443 |
|
|
while (bytes > 0) {
|
1444 |
|
|
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
|
1445 |
|
|
if (runtime->oss.buffer_used == 0) {
|
1446 |
|
|
tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
|
1447 |
|
|
if (tmp <= 0)
|
1448 |
|
|
goto err;
|
1449 |
|
|
runtime->oss.bytes += tmp;
|
1450 |
|
|
runtime->oss.period_ptr = tmp;
|
1451 |
|
|
runtime->oss.buffer_used = tmp;
|
1452 |
|
|
}
|
1453 |
|
|
tmp = bytes;
|
1454 |
|
|
if ((size_t) tmp > runtime->oss.buffer_used)
|
1455 |
|
|
tmp = runtime->oss.buffer_used;
|
1456 |
|
|
if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) {
|
1457 |
|
|
tmp = -EFAULT;
|
1458 |
|
|
goto err;
|
1459 |
|
|
}
|
1460 |
|
|
buf += tmp;
|
1461 |
|
|
bytes -= tmp;
|
1462 |
|
|
xfer += tmp;
|
1463 |
|
|
runtime->oss.buffer_used -= tmp;
|
1464 |
|
|
} else {
|
1465 |
|
|
tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
|
1466 |
|
|
runtime->oss.period_bytes, 0);
|
1467 |
|
|
if (tmp <= 0)
|
1468 |
|
|
goto err;
|
1469 |
|
|
runtime->oss.bytes += tmp;
|
1470 |
|
|
buf += tmp;
|
1471 |
|
|
bytes -= tmp;
|
1472 |
|
|
xfer += tmp;
|
1473 |
|
|
}
|
1474 |
|
|
}
|
1475 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1476 |
|
|
return xfer;
|
1477 |
|
|
|
1478 |
|
|
err:
|
1479 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1480 |
|
|
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
|
1481 |
|
|
}
|
1482 |
|
|
|
1483 |
|
|
static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
|
1484 |
|
|
{
|
1485 |
|
|
struct snd_pcm_substream *substream;
|
1486 |
|
|
|
1487 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
1488 |
|
|
if (substream != NULL) {
|
1489 |
|
|
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
|
1490 |
|
|
substream->runtime->oss.prepare = 1;
|
1491 |
|
|
}
|
1492 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
1493 |
|
|
if (substream != NULL) {
|
1494 |
|
|
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
|
1495 |
|
|
substream->runtime->oss.prepare = 1;
|
1496 |
|
|
}
|
1497 |
|
|
return 0;
|
1498 |
|
|
}
|
1499 |
|
|
|
1500 |
|
|
static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file)
|
1501 |
|
|
{
|
1502 |
|
|
struct snd_pcm_substream *substream;
|
1503 |
|
|
int err;
|
1504 |
|
|
|
1505 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
1506 |
|
|
if (substream != NULL) {
|
1507 |
|
|
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
|
1508 |
|
|
return err;
|
1509 |
|
|
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL);
|
1510 |
|
|
}
|
1511 |
|
|
/* note: all errors from the start action are ignored */
|
1512 |
|
|
/* OSS apps do not know, how to handle them */
|
1513 |
|
|
return 0;
|
1514 |
|
|
}
|
1515 |
|
|
|
1516 |
|
|
static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size)
|
1517 |
|
|
{
|
1518 |
|
|
struct snd_pcm_runtime *runtime;
|
1519 |
|
|
ssize_t result = 0;
|
1520 |
|
|
long res;
|
1521 |
|
|
wait_queue_t wait;
|
1522 |
|
|
|
1523 |
|
|
runtime = substream->runtime;
|
1524 |
|
|
init_waitqueue_entry(&wait, current);
|
1525 |
|
|
add_wait_queue(&runtime->sleep, &wait);
|
1526 |
|
|
#ifdef OSS_DEBUG
|
1527 |
|
|
printk("sync1: size = %li\n", size);
|
1528 |
|
|
#endif
|
1529 |
|
|
while (1) {
|
1530 |
|
|
result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1);
|
1531 |
|
|
if (result > 0) {
|
1532 |
|
|
runtime->oss.buffer_used = 0;
|
1533 |
|
|
result = 0;
|
1534 |
|
|
break;
|
1535 |
|
|
}
|
1536 |
|
|
if (result != 0 && result != -EAGAIN)
|
1537 |
|
|
break;
|
1538 |
|
|
result = 0;
|
1539 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
1540 |
|
|
snd_pcm_stream_lock_irq(substream);
|
1541 |
|
|
res = runtime->status->state;
|
1542 |
|
|
snd_pcm_stream_unlock_irq(substream);
|
1543 |
|
|
if (res != SNDRV_PCM_STATE_RUNNING) {
|
1544 |
|
|
set_current_state(TASK_RUNNING);
|
1545 |
|
|
break;
|
1546 |
|
|
}
|
1547 |
|
|
res = schedule_timeout(10 * HZ);
|
1548 |
|
|
if (signal_pending(current)) {
|
1549 |
|
|
result = -ERESTARTSYS;
|
1550 |
|
|
break;
|
1551 |
|
|
}
|
1552 |
|
|
if (res == 0) {
|
1553 |
|
|
snd_printk(KERN_ERR "OSS sync error - DMA timeout\n");
|
1554 |
|
|
result = -EIO;
|
1555 |
|
|
break;
|
1556 |
|
|
}
|
1557 |
|
|
}
|
1558 |
|
|
remove_wait_queue(&runtime->sleep, &wait);
|
1559 |
|
|
return result;
|
1560 |
|
|
}
|
1561 |
|
|
|
1562 |
|
|
static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
|
1563 |
|
|
{
|
1564 |
|
|
int err = 0;
|
1565 |
|
|
unsigned int saved_f_flags;
|
1566 |
|
|
struct snd_pcm_substream *substream;
|
1567 |
|
|
struct snd_pcm_runtime *runtime;
|
1568 |
|
|
snd_pcm_format_t format;
|
1569 |
|
|
unsigned long width;
|
1570 |
|
|
size_t size;
|
1571 |
|
|
|
1572 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
1573 |
|
|
if (substream != NULL) {
|
1574 |
|
|
runtime = substream->runtime;
|
1575 |
|
|
if (atomic_read(&substream->mmap_count))
|
1576 |
|
|
goto __direct;
|
1577 |
|
|
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
|
1578 |
|
|
return err;
|
1579 |
|
|
format = snd_pcm_oss_format_from(runtime->oss.format);
|
1580 |
|
|
width = snd_pcm_format_physical_width(format);
|
1581 |
|
|
mutex_lock(&runtime->oss.params_lock);
|
1582 |
|
|
if (runtime->oss.buffer_used > 0) {
|
1583 |
|
|
#ifdef OSS_DEBUG
|
1584 |
|
|
printk("sync: buffer_used\n");
|
1585 |
|
|
#endif
|
1586 |
|
|
size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width;
|
1587 |
|
|
snd_pcm_format_set_silence(format,
|
1588 |
|
|
runtime->oss.buffer + runtime->oss.buffer_used,
|
1589 |
|
|
size);
|
1590 |
|
|
err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
|
1591 |
|
|
if (err < 0) {
|
1592 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1593 |
|
|
return err;
|
1594 |
|
|
}
|
1595 |
|
|
} else if (runtime->oss.period_ptr > 0) {
|
1596 |
|
|
#ifdef OSS_DEBUG
|
1597 |
|
|
printk("sync: period_ptr\n");
|
1598 |
|
|
#endif
|
1599 |
|
|
size = runtime->oss.period_bytes - runtime->oss.period_ptr;
|
1600 |
|
|
snd_pcm_format_set_silence(format,
|
1601 |
|
|
runtime->oss.buffer,
|
1602 |
|
|
size * 8 / width);
|
1603 |
|
|
err = snd_pcm_oss_sync1(substream, size);
|
1604 |
|
|
if (err < 0) {
|
1605 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1606 |
|
|
return err;
|
1607 |
|
|
}
|
1608 |
|
|
}
|
1609 |
|
|
/*
|
1610 |
|
|
* The ALSA's period might be a bit large than OSS one.
|
1611 |
|
|
* Fill the remain portion of ALSA period with zeros.
|
1612 |
|
|
*/
|
1613 |
|
|
size = runtime->control->appl_ptr % runtime->period_size;
|
1614 |
|
|
if (size > 0) {
|
1615 |
|
|
size = runtime->period_size - size;
|
1616 |
|
|
if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) {
|
1617 |
|
|
size = (runtime->frame_bits * size) / 8;
|
1618 |
|
|
while (size > 0) {
|
1619 |
|
|
mm_segment_t fs;
|
1620 |
|
|
size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes;
|
1621 |
|
|
size -= size1;
|
1622 |
|
|
size1 *= 8;
|
1623 |
|
|
size1 /= runtime->sample_bits;
|
1624 |
|
|
snd_pcm_format_set_silence(runtime->format,
|
1625 |
|
|
runtime->oss.buffer,
|
1626 |
|
|
size1);
|
1627 |
|
|
fs = snd_enter_user();
|
1628 |
|
|
snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
|
1629 |
|
|
snd_leave_user(fs);
|
1630 |
|
|
}
|
1631 |
|
|
} else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
|
1632 |
|
|
void __user *buffers[runtime->channels];
|
1633 |
|
|
memset(buffers, 0, runtime->channels * sizeof(void *));
|
1634 |
|
|
snd_pcm_lib_writev(substream, buffers, size);
|
1635 |
|
|
}
|
1636 |
|
|
}
|
1637 |
|
|
mutex_unlock(&runtime->oss.params_lock);
|
1638 |
|
|
/*
|
1639 |
|
|
* finish sync: drain the buffer
|
1640 |
|
|
*/
|
1641 |
|
|
__direct:
|
1642 |
|
|
saved_f_flags = substream->f_flags;
|
1643 |
|
|
substream->f_flags &= ~O_NONBLOCK;
|
1644 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
|
1645 |
|
|
substream->f_flags = saved_f_flags;
|
1646 |
|
|
if (err < 0)
|
1647 |
|
|
return err;
|
1648 |
|
|
runtime->oss.prepare = 1;
|
1649 |
|
|
}
|
1650 |
|
|
|
1651 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
1652 |
|
|
if (substream != NULL) {
|
1653 |
|
|
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
|
1654 |
|
|
return err;
|
1655 |
|
|
runtime = substream->runtime;
|
1656 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
|
1657 |
|
|
if (err < 0)
|
1658 |
|
|
return err;
|
1659 |
|
|
runtime->oss.buffer_used = 0;
|
1660 |
|
|
runtime->oss.prepare = 1;
|
1661 |
|
|
}
|
1662 |
|
|
return 0;
|
1663 |
|
|
}
|
1664 |
|
|
|
1665 |
|
|
static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
|
1666 |
|
|
{
|
1667 |
|
|
int idx;
|
1668 |
|
|
|
1669 |
|
|
for (idx = 1; idx >= 0; --idx) {
|
1670 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1671 |
|
|
struct snd_pcm_runtime *runtime;
|
1672 |
|
|
if (substream == NULL)
|
1673 |
|
|
continue;
|
1674 |
|
|
runtime = substream->runtime;
|
1675 |
|
|
if (rate < 1000)
|
1676 |
|
|
rate = 1000;
|
1677 |
|
|
else if (rate > 192000)
|
1678 |
|
|
rate = 192000;
|
1679 |
|
|
if (runtime->oss.rate != rate) {
|
1680 |
|
|
runtime->oss.params = 1;
|
1681 |
|
|
runtime->oss.rate = rate;
|
1682 |
|
|
}
|
1683 |
|
|
}
|
1684 |
|
|
return snd_pcm_oss_get_rate(pcm_oss_file);
|
1685 |
|
|
}
|
1686 |
|
|
|
1687 |
|
|
static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file)
|
1688 |
|
|
{
|
1689 |
|
|
struct snd_pcm_substream *substream;
|
1690 |
|
|
int err;
|
1691 |
|
|
|
1692 |
|
|
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
|
1693 |
|
|
return err;
|
1694 |
|
|
return substream->runtime->oss.rate;
|
1695 |
|
|
}
|
1696 |
|
|
|
1697 |
|
|
static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels)
|
1698 |
|
|
{
|
1699 |
|
|
int idx;
|
1700 |
|
|
if (channels < 1)
|
1701 |
|
|
channels = 1;
|
1702 |
|
|
if (channels > 128)
|
1703 |
|
|
return -EINVAL;
|
1704 |
|
|
for (idx = 1; idx >= 0; --idx) {
|
1705 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1706 |
|
|
struct snd_pcm_runtime *runtime;
|
1707 |
|
|
if (substream == NULL)
|
1708 |
|
|
continue;
|
1709 |
|
|
runtime = substream->runtime;
|
1710 |
|
|
if (runtime->oss.channels != channels) {
|
1711 |
|
|
runtime->oss.params = 1;
|
1712 |
|
|
runtime->oss.channels = channels;
|
1713 |
|
|
}
|
1714 |
|
|
}
|
1715 |
|
|
return snd_pcm_oss_get_channels(pcm_oss_file);
|
1716 |
|
|
}
|
1717 |
|
|
|
1718 |
|
|
static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file)
|
1719 |
|
|
{
|
1720 |
|
|
struct snd_pcm_substream *substream;
|
1721 |
|
|
int err;
|
1722 |
|
|
|
1723 |
|
|
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
|
1724 |
|
|
return err;
|
1725 |
|
|
return substream->runtime->oss.channels;
|
1726 |
|
|
}
|
1727 |
|
|
|
1728 |
|
|
static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file)
|
1729 |
|
|
{
|
1730 |
|
|
struct snd_pcm_substream *substream;
|
1731 |
|
|
int err;
|
1732 |
|
|
|
1733 |
|
|
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
|
1734 |
|
|
return err;
|
1735 |
|
|
return substream->runtime->oss.period_bytes;
|
1736 |
|
|
}
|
1737 |
|
|
|
1738 |
|
|
static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
|
1739 |
|
|
{
|
1740 |
|
|
struct snd_pcm_substream *substream;
|
1741 |
|
|
int err;
|
1742 |
|
|
int direct;
|
1743 |
|
|
struct snd_pcm_hw_params *params;
|
1744 |
|
|
unsigned int formats = 0;
|
1745 |
|
|
struct snd_mask format_mask;
|
1746 |
|
|
int fmt;
|
1747 |
|
|
|
1748 |
|
|
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
|
1749 |
|
|
return err;
|
1750 |
|
|
if (atomic_read(&substream->mmap_count))
|
1751 |
|
|
direct = 1;
|
1752 |
|
|
else
|
1753 |
|
|
direct = substream->oss.setup.direct;
|
1754 |
|
|
if (!direct)
|
1755 |
|
|
return AFMT_MU_LAW | AFMT_U8 |
|
1756 |
|
|
AFMT_S16_LE | AFMT_S16_BE |
|
1757 |
|
|
AFMT_S8 | AFMT_U16_LE |
|
1758 |
|
|
AFMT_U16_BE |
|
1759 |
|
|
AFMT_S32_LE | AFMT_S32_BE |
|
1760 |
|
|
AFMT_S24_LE | AFMT_S24_LE |
|
1761 |
|
|
AFMT_S24_PACKED;
|
1762 |
|
|
params = kmalloc(sizeof(*params), GFP_KERNEL);
|
1763 |
|
|
if (!params)
|
1764 |
|
|
return -ENOMEM;
|
1765 |
|
|
_snd_pcm_hw_params_any(params);
|
1766 |
|
|
err = snd_pcm_hw_refine(substream, params);
|
1767 |
|
|
format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
|
1768 |
|
|
kfree(params);
|
1769 |
|
|
snd_assert(err >= 0, return err);
|
1770 |
|
|
for (fmt = 0; fmt < 32; ++fmt) {
|
1771 |
|
|
if (snd_mask_test(&format_mask, fmt)) {
|
1772 |
|
|
int f = snd_pcm_oss_format_to(fmt);
|
1773 |
|
|
if (f >= 0)
|
1774 |
|
|
formats |= f;
|
1775 |
|
|
}
|
1776 |
|
|
}
|
1777 |
|
|
return formats;
|
1778 |
|
|
}
|
1779 |
|
|
|
1780 |
|
|
static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
|
1781 |
|
|
{
|
1782 |
|
|
int formats, idx;
|
1783 |
|
|
|
1784 |
|
|
if (format != AFMT_QUERY) {
|
1785 |
|
|
formats = snd_pcm_oss_get_formats(pcm_oss_file);
|
1786 |
|
|
if (formats < 0)
|
1787 |
|
|
return formats;
|
1788 |
|
|
if (!(formats & format))
|
1789 |
|
|
format = AFMT_U8;
|
1790 |
|
|
for (idx = 1; idx >= 0; --idx) {
|
1791 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1792 |
|
|
struct snd_pcm_runtime *runtime;
|
1793 |
|
|
if (substream == NULL)
|
1794 |
|
|
continue;
|
1795 |
|
|
runtime = substream->runtime;
|
1796 |
|
|
if (runtime->oss.format != format) {
|
1797 |
|
|
runtime->oss.params = 1;
|
1798 |
|
|
runtime->oss.format = format;
|
1799 |
|
|
}
|
1800 |
|
|
}
|
1801 |
|
|
}
|
1802 |
|
|
return snd_pcm_oss_get_format(pcm_oss_file);
|
1803 |
|
|
}
|
1804 |
|
|
|
1805 |
|
|
static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file)
|
1806 |
|
|
{
|
1807 |
|
|
struct snd_pcm_substream *substream;
|
1808 |
|
|
int err;
|
1809 |
|
|
|
1810 |
|
|
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
|
1811 |
|
|
return err;
|
1812 |
|
|
return substream->runtime->oss.format;
|
1813 |
|
|
}
|
1814 |
|
|
|
1815 |
|
|
static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide)
|
1816 |
|
|
{
|
1817 |
|
|
struct snd_pcm_runtime *runtime;
|
1818 |
|
|
|
1819 |
|
|
if (substream == NULL)
|
1820 |
|
|
return 0;
|
1821 |
|
|
runtime = substream->runtime;
|
1822 |
|
|
if (subdivide == 0) {
|
1823 |
|
|
subdivide = runtime->oss.subdivision;
|
1824 |
|
|
if (subdivide == 0)
|
1825 |
|
|
subdivide = 1;
|
1826 |
|
|
return subdivide;
|
1827 |
|
|
}
|
1828 |
|
|
if (runtime->oss.subdivision || runtime->oss.fragshift)
|
1829 |
|
|
return -EINVAL;
|
1830 |
|
|
if (subdivide != 1 && subdivide != 2 && subdivide != 4 &&
|
1831 |
|
|
subdivide != 8 && subdivide != 16)
|
1832 |
|
|
return -EINVAL;
|
1833 |
|
|
runtime->oss.subdivision = subdivide;
|
1834 |
|
|
runtime->oss.params = 1;
|
1835 |
|
|
return subdivide;
|
1836 |
|
|
}
|
1837 |
|
|
|
1838 |
|
|
static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide)
|
1839 |
|
|
{
|
1840 |
|
|
int err = -EINVAL, idx;
|
1841 |
|
|
|
1842 |
|
|
for (idx = 1; idx >= 0; --idx) {
|
1843 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1844 |
|
|
if (substream == NULL)
|
1845 |
|
|
continue;
|
1846 |
|
|
if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
|
1847 |
|
|
return err;
|
1848 |
|
|
}
|
1849 |
|
|
return err;
|
1850 |
|
|
}
|
1851 |
|
|
|
1852 |
|
|
static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val)
|
1853 |
|
|
{
|
1854 |
|
|
struct snd_pcm_runtime *runtime;
|
1855 |
|
|
|
1856 |
|
|
if (substream == NULL)
|
1857 |
|
|
return 0;
|
1858 |
|
|
runtime = substream->runtime;
|
1859 |
|
|
if (runtime->oss.subdivision || runtime->oss.fragshift)
|
1860 |
|
|
return -EINVAL;
|
1861 |
|
|
runtime->oss.fragshift = val & 0xffff;
|
1862 |
|
|
runtime->oss.maxfrags = (val >> 16) & 0xffff;
|
1863 |
|
|
if (runtime->oss.fragshift < 4) /* < 16 */
|
1864 |
|
|
runtime->oss.fragshift = 4;
|
1865 |
|
|
if (runtime->oss.maxfrags < 2)
|
1866 |
|
|
runtime->oss.maxfrags = 2;
|
1867 |
|
|
runtime->oss.params = 1;
|
1868 |
|
|
return 0;
|
1869 |
|
|
}
|
1870 |
|
|
|
1871 |
|
|
static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val)
|
1872 |
|
|
{
|
1873 |
|
|
int err = -EINVAL, idx;
|
1874 |
|
|
|
1875 |
|
|
for (idx = 1; idx >= 0; --idx) {
|
1876 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1877 |
|
|
if (substream == NULL)
|
1878 |
|
|
continue;
|
1879 |
|
|
if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
|
1880 |
|
|
return err;
|
1881 |
|
|
}
|
1882 |
|
|
return err;
|
1883 |
|
|
}
|
1884 |
|
|
|
1885 |
|
|
static int snd_pcm_oss_nonblock(struct file * file)
|
1886 |
|
|
{
|
1887 |
|
|
file->f_flags |= O_NONBLOCK;
|
1888 |
|
|
return 0;
|
1889 |
|
|
}
|
1890 |
|
|
|
1891 |
|
|
static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
|
1892 |
|
|
{
|
1893 |
|
|
|
1894 |
|
|
if (substream == NULL) {
|
1895 |
|
|
res &= ~DSP_CAP_DUPLEX;
|
1896 |
|
|
return res;
|
1897 |
|
|
}
|
1898 |
|
|
#ifdef DSP_CAP_MULTI
|
1899 |
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
1900 |
|
|
if (substream->pstr->substream_count > 1)
|
1901 |
|
|
res |= DSP_CAP_MULTI;
|
1902 |
|
|
#endif
|
1903 |
|
|
/* DSP_CAP_REALTIME is set all times: */
|
1904 |
|
|
/* all ALSA drivers can return actual pointer in ring buffer */
|
1905 |
|
|
#if defined(DSP_CAP_REALTIME) && 0
|
1906 |
|
|
{
|
1907 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1908 |
|
|
if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH))
|
1909 |
|
|
res &= ~DSP_CAP_REALTIME;
|
1910 |
|
|
}
|
1911 |
|
|
#endif
|
1912 |
|
|
return res;
|
1913 |
|
|
}
|
1914 |
|
|
|
1915 |
|
|
static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
|
1916 |
|
|
{
|
1917 |
|
|
int result, idx;
|
1918 |
|
|
|
1919 |
|
|
result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
|
1920 |
|
|
for (idx = 0; idx < 2; idx++) {
|
1921 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
|
1922 |
|
|
result = snd_pcm_oss_get_caps1(substream, result);
|
1923 |
|
|
}
|
1924 |
|
|
result |= 0x0001; /* revision - same as SB AWE 64 */
|
1925 |
|
|
return result;
|
1926 |
|
|
}
|
1927 |
|
|
|
1928 |
|
|
static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr)
|
1929 |
|
|
{
|
1930 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
1931 |
|
|
snd_pcm_uframes_t appl_ptr;
|
1932 |
|
|
appl_ptr = hw_ptr + runtime->buffer_size;
|
1933 |
|
|
appl_ptr %= runtime->boundary;
|
1934 |
|
|
runtime->control->appl_ptr = appl_ptr;
|
1935 |
|
|
}
|
1936 |
|
|
|
1937 |
|
|
static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger)
|
1938 |
|
|
{
|
1939 |
|
|
struct snd_pcm_runtime *runtime;
|
1940 |
|
|
struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
|
1941 |
|
|
int err, cmd;
|
1942 |
|
|
|
1943 |
|
|
#ifdef OSS_DEBUG
|
1944 |
|
|
printk("pcm_oss: trigger = 0x%x\n", trigger);
|
1945 |
|
|
#endif
|
1946 |
|
|
|
1947 |
|
|
psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
1948 |
|
|
csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
1949 |
|
|
|
1950 |
|
|
if (psubstream) {
|
1951 |
|
|
if ((err = snd_pcm_oss_make_ready(psubstream)) < 0)
|
1952 |
|
|
return err;
|
1953 |
|
|
}
|
1954 |
|
|
if (csubstream) {
|
1955 |
|
|
if ((err = snd_pcm_oss_make_ready(csubstream)) < 0)
|
1956 |
|
|
return err;
|
1957 |
|
|
}
|
1958 |
|
|
if (psubstream) {
|
1959 |
|
|
runtime = psubstream->runtime;
|
1960 |
|
|
if (trigger & PCM_ENABLE_OUTPUT) {
|
1961 |
|
|
if (runtime->oss.trigger)
|
1962 |
|
|
goto _skip1;
|
1963 |
|
|
if (atomic_read(&psubstream->mmap_count))
|
1964 |
|
|
snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt);
|
1965 |
|
|
runtime->oss.trigger = 1;
|
1966 |
|
|
runtime->start_threshold = 1;
|
1967 |
|
|
cmd = SNDRV_PCM_IOCTL_START;
|
1968 |
|
|
} else {
|
1969 |
|
|
if (!runtime->oss.trigger)
|
1970 |
|
|
goto _skip1;
|
1971 |
|
|
runtime->oss.trigger = 0;
|
1972 |
|
|
runtime->start_threshold = runtime->boundary;
|
1973 |
|
|
cmd = SNDRV_PCM_IOCTL_DROP;
|
1974 |
|
|
runtime->oss.prepare = 1;
|
1975 |
|
|
}
|
1976 |
|
|
err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
|
1977 |
|
|
if (err < 0)
|
1978 |
|
|
return err;
|
1979 |
|
|
}
|
1980 |
|
|
_skip1:
|
1981 |
|
|
if (csubstream) {
|
1982 |
|
|
runtime = csubstream->runtime;
|
1983 |
|
|
if (trigger & PCM_ENABLE_INPUT) {
|
1984 |
|
|
if (runtime->oss.trigger)
|
1985 |
|
|
goto _skip2;
|
1986 |
|
|
runtime->oss.trigger = 1;
|
1987 |
|
|
runtime->start_threshold = 1;
|
1988 |
|
|
cmd = SNDRV_PCM_IOCTL_START;
|
1989 |
|
|
} else {
|
1990 |
|
|
if (!runtime->oss.trigger)
|
1991 |
|
|
goto _skip2;
|
1992 |
|
|
runtime->oss.trigger = 0;
|
1993 |
|
|
runtime->start_threshold = runtime->boundary;
|
1994 |
|
|
cmd = SNDRV_PCM_IOCTL_DROP;
|
1995 |
|
|
runtime->oss.prepare = 1;
|
1996 |
|
|
}
|
1997 |
|
|
err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
|
1998 |
|
|
if (err < 0)
|
1999 |
|
|
return err;
|
2000 |
|
|
}
|
2001 |
|
|
_skip2:
|
2002 |
|
|
return 0;
|
2003 |
|
|
}
|
2004 |
|
|
|
2005 |
|
|
static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file)
|
2006 |
|
|
{
|
2007 |
|
|
struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
|
2008 |
|
|
int result = 0;
|
2009 |
|
|
|
2010 |
|
|
psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2011 |
|
|
csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2012 |
|
|
if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger)
|
2013 |
|
|
result |= PCM_ENABLE_OUTPUT;
|
2014 |
|
|
if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger)
|
2015 |
|
|
result |= PCM_ENABLE_INPUT;
|
2016 |
|
|
return result;
|
2017 |
|
|
}
|
2018 |
|
|
|
2019 |
|
|
static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file)
|
2020 |
|
|
{
|
2021 |
|
|
struct snd_pcm_substream *substream;
|
2022 |
|
|
struct snd_pcm_runtime *runtime;
|
2023 |
|
|
snd_pcm_sframes_t delay;
|
2024 |
|
|
int err;
|
2025 |
|
|
|
2026 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2027 |
|
|
if (substream == NULL)
|
2028 |
|
|
return -EINVAL;
|
2029 |
|
|
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
|
2030 |
|
|
return err;
|
2031 |
|
|
runtime = substream->runtime;
|
2032 |
|
|
if (runtime->oss.params || runtime->oss.prepare)
|
2033 |
|
|
return 0;
|
2034 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
|
2035 |
|
|
if (err == -EPIPE)
|
2036 |
|
|
delay = 0; /* hack for broken OSS applications */
|
2037 |
|
|
else if (err < 0)
|
2038 |
|
|
return err;
|
2039 |
|
|
return snd_pcm_oss_bytes(substream, delay);
|
2040 |
|
|
}
|
2041 |
|
|
|
2042 |
|
|
static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info)
|
2043 |
|
|
{
|
2044 |
|
|
struct snd_pcm_substream *substream;
|
2045 |
|
|
struct snd_pcm_runtime *runtime;
|
2046 |
|
|
snd_pcm_sframes_t delay;
|
2047 |
|
|
int fixup;
|
2048 |
|
|
struct count_info info;
|
2049 |
|
|
int err;
|
2050 |
|
|
|
2051 |
|
|
if (_info == NULL)
|
2052 |
|
|
return -EFAULT;
|
2053 |
|
|
substream = pcm_oss_file->streams[stream];
|
2054 |
|
|
if (substream == NULL)
|
2055 |
|
|
return -EINVAL;
|
2056 |
|
|
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
|
2057 |
|
|
return err;
|
2058 |
|
|
runtime = substream->runtime;
|
2059 |
|
|
if (runtime->oss.params || runtime->oss.prepare) {
|
2060 |
|
|
memset(&info, 0, sizeof(info));
|
2061 |
|
|
if (copy_to_user(_info, &info, sizeof(info)))
|
2062 |
|
|
return -EFAULT;
|
2063 |
|
|
return 0;
|
2064 |
|
|
}
|
2065 |
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
2066 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
|
2067 |
|
|
if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) {
|
2068 |
|
|
err = 0;
|
2069 |
|
|
delay = 0;
|
2070 |
|
|
fixup = 0;
|
2071 |
|
|
} else {
|
2072 |
|
|
fixup = runtime->oss.buffer_used;
|
2073 |
|
|
}
|
2074 |
|
|
} else {
|
2075 |
|
|
err = snd_pcm_oss_capture_position_fixup(substream, &delay);
|
2076 |
|
|
fixup = -runtime->oss.buffer_used;
|
2077 |
|
|
}
|
2078 |
|
|
if (err < 0)
|
2079 |
|
|
return err;
|
2080 |
|
|
info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size);
|
2081 |
|
|
if (atomic_read(&substream->mmap_count)) {
|
2082 |
|
|
snd_pcm_sframes_t n;
|
2083 |
|
|
n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt;
|
2084 |
|
|
if (n < 0)
|
2085 |
|
|
n += runtime->boundary;
|
2086 |
|
|
info.blocks = n / runtime->period_size;
|
2087 |
|
|
runtime->oss.prev_hw_ptr_interrupt = delay;
|
2088 |
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
2089 |
|
|
snd_pcm_oss_simulate_fill(substream, delay);
|
2090 |
|
|
info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
|
2091 |
|
|
} else {
|
2092 |
|
|
delay = snd_pcm_oss_bytes(substream, delay);
|
2093 |
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
2094 |
|
|
if (substream->oss.setup.buggyptr)
|
2095 |
|
|
info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
|
2096 |
|
|
else
|
2097 |
|
|
info.blocks = (delay + fixup) / runtime->oss.period_bytes;
|
2098 |
|
|
info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
|
2099 |
|
|
} else {
|
2100 |
|
|
delay += fixup;
|
2101 |
|
|
info.blocks = delay / runtime->oss.period_bytes;
|
2102 |
|
|
info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
|
2103 |
|
|
}
|
2104 |
|
|
}
|
2105 |
|
|
if (copy_to_user(_info, &info, sizeof(info)))
|
2106 |
|
|
return -EFAULT;
|
2107 |
|
|
return 0;
|
2108 |
|
|
}
|
2109 |
|
|
|
2110 |
|
|
static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
|
2111 |
|
|
{
|
2112 |
|
|
struct snd_pcm_substream *substream;
|
2113 |
|
|
struct snd_pcm_runtime *runtime;
|
2114 |
|
|
snd_pcm_sframes_t avail;
|
2115 |
|
|
int fixup;
|
2116 |
|
|
struct audio_buf_info info;
|
2117 |
|
|
int err;
|
2118 |
|
|
|
2119 |
|
|
if (_info == NULL)
|
2120 |
|
|
return -EFAULT;
|
2121 |
|
|
substream = pcm_oss_file->streams[stream];
|
2122 |
|
|
if (substream == NULL)
|
2123 |
|
|
return -EINVAL;
|
2124 |
|
|
runtime = substream->runtime;
|
2125 |
|
|
|
2126 |
|
|
if (runtime->oss.params &&
|
2127 |
|
|
(err = snd_pcm_oss_change_params(substream)) < 0)
|
2128 |
|
|
return err;
|
2129 |
|
|
|
2130 |
|
|
info.fragsize = runtime->oss.period_bytes;
|
2131 |
|
|
info.fragstotal = runtime->periods;
|
2132 |
|
|
if (runtime->oss.prepare) {
|
2133 |
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
2134 |
|
|
info.bytes = runtime->oss.period_bytes * runtime->oss.periods;
|
2135 |
|
|
info.fragments = runtime->oss.periods;
|
2136 |
|
|
} else {
|
2137 |
|
|
info.bytes = 0;
|
2138 |
|
|
info.fragments = 0;
|
2139 |
|
|
}
|
2140 |
|
|
} else {
|
2141 |
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
2142 |
|
|
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail);
|
2143 |
|
|
if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) {
|
2144 |
|
|
avail = runtime->buffer_size;
|
2145 |
|
|
err = 0;
|
2146 |
|
|
fixup = 0;
|
2147 |
|
|
} else {
|
2148 |
|
|
avail = runtime->buffer_size - avail;
|
2149 |
|
|
fixup = -runtime->oss.buffer_used;
|
2150 |
|
|
}
|
2151 |
|
|
} else {
|
2152 |
|
|
err = snd_pcm_oss_capture_position_fixup(substream, &avail);
|
2153 |
|
|
fixup = runtime->oss.buffer_used;
|
2154 |
|
|
}
|
2155 |
|
|
if (err < 0)
|
2156 |
|
|
return err;
|
2157 |
|
|
info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup;
|
2158 |
|
|
info.fragments = info.bytes / runtime->oss.period_bytes;
|
2159 |
|
|
}
|
2160 |
|
|
|
2161 |
|
|
#ifdef OSS_DEBUG
|
2162 |
|
|
printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize);
|
2163 |
|
|
#endif
|
2164 |
|
|
if (copy_to_user(_info, &info, sizeof(info)))
|
2165 |
|
|
return -EFAULT;
|
2166 |
|
|
return 0;
|
2167 |
|
|
}
|
2168 |
|
|
|
2169 |
|
|
static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
|
2170 |
|
|
{
|
2171 |
|
|
// it won't be probably implemented
|
2172 |
|
|
// snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
|
2173 |
|
|
return -EINVAL;
|
2174 |
|
|
}
|
2175 |
|
|
|
2176 |
|
|
static const char *strip_task_path(const char *path)
|
2177 |
|
|
{
|
2178 |
|
|
const char *ptr, *ptrl = NULL;
|
2179 |
|
|
for (ptr = path; *ptr; ptr++) {
|
2180 |
|
|
if (*ptr == '/')
|
2181 |
|
|
ptrl = ptr + 1;
|
2182 |
|
|
}
|
2183 |
|
|
return ptrl;
|
2184 |
|
|
}
|
2185 |
|
|
|
2186 |
|
|
static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream,
|
2187 |
|
|
const char *task_name,
|
2188 |
|
|
struct snd_pcm_oss_setup *rsetup)
|
2189 |
|
|
{
|
2190 |
|
|
struct snd_pcm_oss_setup *setup;
|
2191 |
|
|
|
2192 |
|
|
mutex_lock(&pcm->streams[stream].oss.setup_mutex);
|
2193 |
|
|
do {
|
2194 |
|
|
for (setup = pcm->streams[stream].oss.setup_list; setup;
|
2195 |
|
|
setup = setup->next) {
|
2196 |
|
|
if (!strcmp(setup->task_name, task_name))
|
2197 |
|
|
goto out;
|
2198 |
|
|
}
|
2199 |
|
|
} while ((task_name = strip_task_path(task_name)) != NULL);
|
2200 |
|
|
out:
|
2201 |
|
|
if (setup)
|
2202 |
|
|
*rsetup = *setup;
|
2203 |
|
|
mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
|
2204 |
|
|
}
|
2205 |
|
|
|
2206 |
|
|
static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
|
2207 |
|
|
{
|
2208 |
|
|
struct snd_pcm_runtime *runtime;
|
2209 |
|
|
runtime = substream->runtime;
|
2210 |
|
|
vfree(runtime->oss.buffer);
|
2211 |
|
|
runtime->oss.buffer = NULL;
|
2212 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
2213 |
|
|
snd_pcm_oss_plugin_clear(substream);
|
2214 |
|
|
#endif
|
2215 |
|
|
substream->oss.oss = 0;
|
2216 |
|
|
}
|
2217 |
|
|
|
2218 |
|
|
static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
|
2219 |
|
|
struct snd_pcm_oss_setup *setup,
|
2220 |
|
|
int minor)
|
2221 |
|
|
{
|
2222 |
|
|
struct snd_pcm_runtime *runtime;
|
2223 |
|
|
|
2224 |
|
|
substream->oss.oss = 1;
|
2225 |
|
|
substream->oss.setup = *setup;
|
2226 |
|
|
if (setup->nonblock)
|
2227 |
|
|
substream->f_flags |= O_NONBLOCK;
|
2228 |
|
|
else if (setup->block)
|
2229 |
|
|
substream->f_flags &= ~O_NONBLOCK;
|
2230 |
|
|
runtime = substream->runtime;
|
2231 |
|
|
runtime->oss.params = 1;
|
2232 |
|
|
runtime->oss.trigger = 1;
|
2233 |
|
|
runtime->oss.rate = 8000;
|
2234 |
|
|
mutex_init(&runtime->oss.params_lock);
|
2235 |
|
|
switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
|
2236 |
|
|
case SNDRV_MINOR_OSS_PCM_8:
|
2237 |
|
|
runtime->oss.format = AFMT_U8;
|
2238 |
|
|
break;
|
2239 |
|
|
case SNDRV_MINOR_OSS_PCM_16:
|
2240 |
|
|
runtime->oss.format = AFMT_S16_LE;
|
2241 |
|
|
break;
|
2242 |
|
|
default:
|
2243 |
|
|
runtime->oss.format = AFMT_MU_LAW;
|
2244 |
|
|
}
|
2245 |
|
|
runtime->oss.channels = 1;
|
2246 |
|
|
runtime->oss.fragshift = 0;
|
2247 |
|
|
runtime->oss.maxfrags = 0;
|
2248 |
|
|
runtime->oss.subdivision = 0;
|
2249 |
|
|
substream->pcm_release = snd_pcm_oss_release_substream;
|
2250 |
|
|
}
|
2251 |
|
|
|
2252 |
|
|
static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
|
2253 |
|
|
{
|
2254 |
|
|
int cidx;
|
2255 |
|
|
snd_assert(pcm_oss_file != NULL, return -ENXIO);
|
2256 |
|
|
for (cidx = 0; cidx < 2; ++cidx) {
|
2257 |
|
|
struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx];
|
2258 |
|
|
if (substream)
|
2259 |
|
|
snd_pcm_release_substream(substream);
|
2260 |
|
|
}
|
2261 |
|
|
kfree(pcm_oss_file);
|
2262 |
|
|
return 0;
|
2263 |
|
|
}
|
2264 |
|
|
|
2265 |
|
|
static int snd_pcm_oss_open_file(struct file *file,
|
2266 |
|
|
struct snd_pcm *pcm,
|
2267 |
|
|
struct snd_pcm_oss_file **rpcm_oss_file,
|
2268 |
|
|
int minor,
|
2269 |
|
|
struct snd_pcm_oss_setup *setup)
|
2270 |
|
|
{
|
2271 |
|
|
int idx, err;
|
2272 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2273 |
|
|
struct snd_pcm_substream *substream;
|
2274 |
|
|
unsigned int f_mode = file->f_mode;
|
2275 |
|
|
|
2276 |
|
|
snd_assert(rpcm_oss_file != NULL, return -EINVAL);
|
2277 |
|
|
*rpcm_oss_file = NULL;
|
2278 |
|
|
|
2279 |
|
|
pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL);
|
2280 |
|
|
if (pcm_oss_file == NULL)
|
2281 |
|
|
return -ENOMEM;
|
2282 |
|
|
|
2283 |
|
|
if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) &&
|
2284 |
|
|
(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX))
|
2285 |
|
|
f_mode = FMODE_WRITE;
|
2286 |
|
|
|
2287 |
|
|
file->f_flags &= ~O_APPEND;
|
2288 |
|
|
for (idx = 0; idx < 2; idx++) {
|
2289 |
|
|
if (setup[idx].disable)
|
2290 |
|
|
continue;
|
2291 |
|
|
if (! pcm->streams[idx].substream_count)
|
2292 |
|
|
continue; /* no matching substream */
|
2293 |
|
|
if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
|
2294 |
|
|
if (! (f_mode & FMODE_WRITE))
|
2295 |
|
|
continue;
|
2296 |
|
|
} else {
|
2297 |
|
|
if (! (f_mode & FMODE_READ))
|
2298 |
|
|
continue;
|
2299 |
|
|
}
|
2300 |
|
|
err = snd_pcm_open_substream(pcm, idx, file, &substream);
|
2301 |
|
|
if (err < 0) {
|
2302 |
|
|
snd_pcm_oss_release_file(pcm_oss_file);
|
2303 |
|
|
return err;
|
2304 |
|
|
}
|
2305 |
|
|
|
2306 |
|
|
pcm_oss_file->streams[idx] = substream;
|
2307 |
|
|
substream->file = pcm_oss_file;
|
2308 |
|
|
snd_pcm_oss_init_substream(substream, &setup[idx], minor);
|
2309 |
|
|
}
|
2310 |
|
|
|
2311 |
|
|
if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) {
|
2312 |
|
|
snd_pcm_oss_release_file(pcm_oss_file);
|
2313 |
|
|
return -EINVAL;
|
2314 |
|
|
}
|
2315 |
|
|
|
2316 |
|
|
file->private_data = pcm_oss_file;
|
2317 |
|
|
*rpcm_oss_file = pcm_oss_file;
|
2318 |
|
|
return 0;
|
2319 |
|
|
}
|
2320 |
|
|
|
2321 |
|
|
|
2322 |
|
|
static int snd_task_name(struct task_struct *task, char *name, size_t size)
|
2323 |
|
|
{
|
2324 |
|
|
unsigned int idx;
|
2325 |
|
|
|
2326 |
|
|
snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL);
|
2327 |
|
|
for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++)
|
2328 |
|
|
name[idx] = task->comm[idx];
|
2329 |
|
|
name[idx] = '\0';
|
2330 |
|
|
return 0;
|
2331 |
|
|
}
|
2332 |
|
|
|
2333 |
|
|
static int snd_pcm_oss_open(struct inode *inode, struct file *file)
|
2334 |
|
|
{
|
2335 |
|
|
int err;
|
2336 |
|
|
char task_name[32];
|
2337 |
|
|
struct snd_pcm *pcm;
|
2338 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2339 |
|
|
struct snd_pcm_oss_setup setup[2];
|
2340 |
|
|
int nonblock;
|
2341 |
|
|
wait_queue_t wait;
|
2342 |
|
|
|
2343 |
|
|
pcm = snd_lookup_oss_minor_data(iminor(inode),
|
2344 |
|
|
SNDRV_OSS_DEVICE_TYPE_PCM);
|
2345 |
|
|
if (pcm == NULL) {
|
2346 |
|
|
err = -ENODEV;
|
2347 |
|
|
goto __error1;
|
2348 |
|
|
}
|
2349 |
|
|
err = snd_card_file_add(pcm->card, file);
|
2350 |
|
|
if (err < 0)
|
2351 |
|
|
goto __error1;
|
2352 |
|
|
if (!try_module_get(pcm->card->module)) {
|
2353 |
|
|
err = -EFAULT;
|
2354 |
|
|
goto __error2;
|
2355 |
|
|
}
|
2356 |
|
|
if (snd_task_name(current, task_name, sizeof(task_name)) < 0) {
|
2357 |
|
|
err = -EFAULT;
|
2358 |
|
|
goto __error;
|
2359 |
|
|
}
|
2360 |
|
|
memset(setup, 0, sizeof(setup));
|
2361 |
|
|
if (file->f_mode & FMODE_WRITE)
|
2362 |
|
|
snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
2363 |
|
|
task_name, &setup[0]);
|
2364 |
|
|
if (file->f_mode & FMODE_READ)
|
2365 |
|
|
snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE,
|
2366 |
|
|
task_name, &setup[1]);
|
2367 |
|
|
|
2368 |
|
|
nonblock = !!(file->f_flags & O_NONBLOCK);
|
2369 |
|
|
if (!nonblock)
|
2370 |
|
|
nonblock = nonblock_open;
|
2371 |
|
|
|
2372 |
|
|
init_waitqueue_entry(&wait, current);
|
2373 |
|
|
add_wait_queue(&pcm->open_wait, &wait);
|
2374 |
|
|
mutex_lock(&pcm->open_mutex);
|
2375 |
|
|
while (1) {
|
2376 |
|
|
err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file,
|
2377 |
|
|
iminor(inode), setup);
|
2378 |
|
|
if (err >= 0)
|
2379 |
|
|
break;
|
2380 |
|
|
if (err == -EAGAIN) {
|
2381 |
|
|
if (nonblock) {
|
2382 |
|
|
err = -EBUSY;
|
2383 |
|
|
break;
|
2384 |
|
|
}
|
2385 |
|
|
} else
|
2386 |
|
|
break;
|
2387 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
2388 |
|
|
mutex_unlock(&pcm->open_mutex);
|
2389 |
|
|
schedule();
|
2390 |
|
|
mutex_lock(&pcm->open_mutex);
|
2391 |
|
|
if (signal_pending(current)) {
|
2392 |
|
|
err = -ERESTARTSYS;
|
2393 |
|
|
break;
|
2394 |
|
|
}
|
2395 |
|
|
}
|
2396 |
|
|
remove_wait_queue(&pcm->open_wait, &wait);
|
2397 |
|
|
mutex_unlock(&pcm->open_mutex);
|
2398 |
|
|
if (err < 0)
|
2399 |
|
|
goto __error;
|
2400 |
|
|
return err;
|
2401 |
|
|
|
2402 |
|
|
__error:
|
2403 |
|
|
module_put(pcm->card->module);
|
2404 |
|
|
__error2:
|
2405 |
|
|
snd_card_file_remove(pcm->card, file);
|
2406 |
|
|
__error1:
|
2407 |
|
|
return err;
|
2408 |
|
|
}
|
2409 |
|
|
|
2410 |
|
|
static int snd_pcm_oss_release(struct inode *inode, struct file *file)
|
2411 |
|
|
{
|
2412 |
|
|
struct snd_pcm *pcm;
|
2413 |
|
|
struct snd_pcm_substream *substream;
|
2414 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2415 |
|
|
|
2416 |
|
|
pcm_oss_file = file->private_data;
|
2417 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2418 |
|
|
if (substream == NULL)
|
2419 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2420 |
|
|
snd_assert(substream != NULL, return -ENXIO);
|
2421 |
|
|
pcm = substream->pcm;
|
2422 |
|
|
if (!pcm->card->shutdown)
|
2423 |
|
|
snd_pcm_oss_sync(pcm_oss_file);
|
2424 |
|
|
mutex_lock(&pcm->open_mutex);
|
2425 |
|
|
snd_pcm_oss_release_file(pcm_oss_file);
|
2426 |
|
|
mutex_unlock(&pcm->open_mutex);
|
2427 |
|
|
wake_up(&pcm->open_wait);
|
2428 |
|
|
module_put(pcm->card->module);
|
2429 |
|
|
snd_card_file_remove(pcm->card, file);
|
2430 |
|
|
return 0;
|
2431 |
|
|
}
|
2432 |
|
|
|
2433 |
|
|
static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
2434 |
|
|
{
|
2435 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2436 |
|
|
int __user *p = (int __user *)arg;
|
2437 |
|
|
int res;
|
2438 |
|
|
|
2439 |
|
|
pcm_oss_file = file->private_data;
|
2440 |
|
|
if (cmd == OSS_GETVERSION)
|
2441 |
|
|
return put_user(SNDRV_OSS_VERSION, p);
|
2442 |
|
|
if (cmd == OSS_ALSAEMULVER)
|
2443 |
|
|
return put_user(1, p);
|
2444 |
|
|
#if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
|
2445 |
|
|
if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */
|
2446 |
|
|
struct snd_pcm_substream *substream;
|
2447 |
|
|
int idx;
|
2448 |
|
|
for (idx = 0; idx < 2; ++idx) {
|
2449 |
|
|
substream = pcm_oss_file->streams[idx];
|
2450 |
|
|
if (substream != NULL)
|
2451 |
|
|
break;
|
2452 |
|
|
}
|
2453 |
|
|
snd_assert(substream != NULL, return -ENXIO);
|
2454 |
|
|
return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg);
|
2455 |
|
|
}
|
2456 |
|
|
#endif
|
2457 |
|
|
if (((cmd >> 8) & 0xff) != 'P')
|
2458 |
|
|
return -EINVAL;
|
2459 |
|
|
#ifdef OSS_DEBUG
|
2460 |
|
|
printk("pcm_oss: ioctl = 0x%x\n", cmd);
|
2461 |
|
|
#endif
|
2462 |
|
|
switch (cmd) {
|
2463 |
|
|
case SNDCTL_DSP_RESET:
|
2464 |
|
|
return snd_pcm_oss_reset(pcm_oss_file);
|
2465 |
|
|
case SNDCTL_DSP_SYNC:
|
2466 |
|
|
return snd_pcm_oss_sync(pcm_oss_file);
|
2467 |
|
|
case SNDCTL_DSP_SPEED:
|
2468 |
|
|
if (get_user(res, p))
|
2469 |
|
|
return -EFAULT;
|
2470 |
|
|
if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0)
|
2471 |
|
|
return res;
|
2472 |
|
|
return put_user(res, p);
|
2473 |
|
|
case SOUND_PCM_READ_RATE:
|
2474 |
|
|
res = snd_pcm_oss_get_rate(pcm_oss_file);
|
2475 |
|
|
if (res < 0)
|
2476 |
|
|
return res;
|
2477 |
|
|
return put_user(res, p);
|
2478 |
|
|
case SNDCTL_DSP_STEREO:
|
2479 |
|
|
if (get_user(res, p))
|
2480 |
|
|
return -EFAULT;
|
2481 |
|
|
res = res > 0 ? 2 : 1;
|
2482 |
|
|
if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0)
|
2483 |
|
|
return res;
|
2484 |
|
|
return put_user(--res, p);
|
2485 |
|
|
case SNDCTL_DSP_GETBLKSIZE:
|
2486 |
|
|
res = snd_pcm_oss_get_block_size(pcm_oss_file);
|
2487 |
|
|
if (res < 0)
|
2488 |
|
|
return res;
|
2489 |
|
|
return put_user(res, p);
|
2490 |
|
|
case SNDCTL_DSP_SETFMT:
|
2491 |
|
|
if (get_user(res, p))
|
2492 |
|
|
return -EFAULT;
|
2493 |
|
|
res = snd_pcm_oss_set_format(pcm_oss_file, res);
|
2494 |
|
|
if (res < 0)
|
2495 |
|
|
return res;
|
2496 |
|
|
return put_user(res, p);
|
2497 |
|
|
case SOUND_PCM_READ_BITS:
|
2498 |
|
|
res = snd_pcm_oss_get_format(pcm_oss_file);
|
2499 |
|
|
if (res < 0)
|
2500 |
|
|
return res;
|
2501 |
|
|
return put_user(res, p);
|
2502 |
|
|
case SNDCTL_DSP_CHANNELS:
|
2503 |
|
|
if (get_user(res, p))
|
2504 |
|
|
return -EFAULT;
|
2505 |
|
|
res = snd_pcm_oss_set_channels(pcm_oss_file, res);
|
2506 |
|
|
if (res < 0)
|
2507 |
|
|
return res;
|
2508 |
|
|
return put_user(res, p);
|
2509 |
|
|
case SOUND_PCM_READ_CHANNELS:
|
2510 |
|
|
res = snd_pcm_oss_get_channels(pcm_oss_file);
|
2511 |
|
|
if (res < 0)
|
2512 |
|
|
return res;
|
2513 |
|
|
return put_user(res, p);
|
2514 |
|
|
case SOUND_PCM_WRITE_FILTER:
|
2515 |
|
|
case SOUND_PCM_READ_FILTER:
|
2516 |
|
|
return -EIO;
|
2517 |
|
|
case SNDCTL_DSP_POST:
|
2518 |
|
|
return snd_pcm_oss_post(pcm_oss_file);
|
2519 |
|
|
case SNDCTL_DSP_SUBDIVIDE:
|
2520 |
|
|
if (get_user(res, p))
|
2521 |
|
|
return -EFAULT;
|
2522 |
|
|
res = snd_pcm_oss_set_subdivide(pcm_oss_file, res);
|
2523 |
|
|
if (res < 0)
|
2524 |
|
|
return res;
|
2525 |
|
|
return put_user(res, p);
|
2526 |
|
|
case SNDCTL_DSP_SETFRAGMENT:
|
2527 |
|
|
if (get_user(res, p))
|
2528 |
|
|
return -EFAULT;
|
2529 |
|
|
return snd_pcm_oss_set_fragment(pcm_oss_file, res);
|
2530 |
|
|
case SNDCTL_DSP_GETFMTS:
|
2531 |
|
|
res = snd_pcm_oss_get_formats(pcm_oss_file);
|
2532 |
|
|
if (res < 0)
|
2533 |
|
|
return res;
|
2534 |
|
|
return put_user(res, p);
|
2535 |
|
|
case SNDCTL_DSP_GETOSPACE:
|
2536 |
|
|
case SNDCTL_DSP_GETISPACE:
|
2537 |
|
|
return snd_pcm_oss_get_space(pcm_oss_file,
|
2538 |
|
|
cmd == SNDCTL_DSP_GETISPACE ?
|
2539 |
|
|
SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
|
2540 |
|
|
(struct audio_buf_info __user *) arg);
|
2541 |
|
|
case SNDCTL_DSP_NONBLOCK:
|
2542 |
|
|
return snd_pcm_oss_nonblock(file);
|
2543 |
|
|
case SNDCTL_DSP_GETCAPS:
|
2544 |
|
|
res = snd_pcm_oss_get_caps(pcm_oss_file);
|
2545 |
|
|
if (res < 0)
|
2546 |
|
|
return res;
|
2547 |
|
|
return put_user(res, p);
|
2548 |
|
|
case SNDCTL_DSP_GETTRIGGER:
|
2549 |
|
|
res = snd_pcm_oss_get_trigger(pcm_oss_file);
|
2550 |
|
|
if (res < 0)
|
2551 |
|
|
return res;
|
2552 |
|
|
return put_user(res, p);
|
2553 |
|
|
case SNDCTL_DSP_SETTRIGGER:
|
2554 |
|
|
if (get_user(res, p))
|
2555 |
|
|
return -EFAULT;
|
2556 |
|
|
return snd_pcm_oss_set_trigger(pcm_oss_file, res);
|
2557 |
|
|
case SNDCTL_DSP_GETIPTR:
|
2558 |
|
|
case SNDCTL_DSP_GETOPTR:
|
2559 |
|
|
return snd_pcm_oss_get_ptr(pcm_oss_file,
|
2560 |
|
|
cmd == SNDCTL_DSP_GETIPTR ?
|
2561 |
|
|
SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
|
2562 |
|
|
(struct count_info __user *) arg);
|
2563 |
|
|
case SNDCTL_DSP_MAPINBUF:
|
2564 |
|
|
case SNDCTL_DSP_MAPOUTBUF:
|
2565 |
|
|
return snd_pcm_oss_get_mapbuf(pcm_oss_file,
|
2566 |
|
|
cmd == SNDCTL_DSP_MAPINBUF ?
|
2567 |
|
|
SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
|
2568 |
|
|
(struct buffmem_desc __user *) arg);
|
2569 |
|
|
case SNDCTL_DSP_SETSYNCRO:
|
2570 |
|
|
/* stop DMA now.. */
|
2571 |
|
|
return 0;
|
2572 |
|
|
case SNDCTL_DSP_SETDUPLEX:
|
2573 |
|
|
if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX)
|
2574 |
|
|
return 0;
|
2575 |
|
|
return -EIO;
|
2576 |
|
|
case SNDCTL_DSP_GETODELAY:
|
2577 |
|
|
res = snd_pcm_oss_get_odelay(pcm_oss_file);
|
2578 |
|
|
if (res < 0) {
|
2579 |
|
|
/* it's for sure, some broken apps don't check for error codes */
|
2580 |
|
|
put_user(0, p);
|
2581 |
|
|
return res;
|
2582 |
|
|
}
|
2583 |
|
|
return put_user(res, p);
|
2584 |
|
|
case SNDCTL_DSP_PROFILE:
|
2585 |
|
|
return 0; /* silently ignore */
|
2586 |
|
|
default:
|
2587 |
|
|
snd_printd("pcm_oss: unknown command = 0x%x\n", cmd);
|
2588 |
|
|
}
|
2589 |
|
|
return -EINVAL;
|
2590 |
|
|
}
|
2591 |
|
|
|
2592 |
|
|
#ifdef CONFIG_COMPAT
|
2593 |
|
|
/* all compatible */
|
2594 |
|
|
#define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl
|
2595 |
|
|
#else
|
2596 |
|
|
#define snd_pcm_oss_ioctl_compat NULL
|
2597 |
|
|
#endif
|
2598 |
|
|
|
2599 |
|
|
static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
|
2600 |
|
|
{
|
2601 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2602 |
|
|
struct snd_pcm_substream *substream;
|
2603 |
|
|
|
2604 |
|
|
pcm_oss_file = file->private_data;
|
2605 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2606 |
|
|
if (substream == NULL)
|
2607 |
|
|
return -ENXIO;
|
2608 |
|
|
substream->f_flags = file->f_flags & O_NONBLOCK;
|
2609 |
|
|
#ifndef OSS_DEBUG
|
2610 |
|
|
return snd_pcm_oss_read1(substream, buf, count);
|
2611 |
|
|
#else
|
2612 |
|
|
{
|
2613 |
|
|
ssize_t res = snd_pcm_oss_read1(substream, buf, count);
|
2614 |
|
|
printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res);
|
2615 |
|
|
return res;
|
2616 |
|
|
}
|
2617 |
|
|
#endif
|
2618 |
|
|
}
|
2619 |
|
|
|
2620 |
|
|
static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
|
2621 |
|
|
{
|
2622 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2623 |
|
|
struct snd_pcm_substream *substream;
|
2624 |
|
|
long result;
|
2625 |
|
|
|
2626 |
|
|
pcm_oss_file = file->private_data;
|
2627 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2628 |
|
|
if (substream == NULL)
|
2629 |
|
|
return -ENXIO;
|
2630 |
|
|
substream->f_flags = file->f_flags & O_NONBLOCK;
|
2631 |
|
|
result = snd_pcm_oss_write1(substream, buf, count);
|
2632 |
|
|
#ifdef OSS_DEBUG
|
2633 |
|
|
printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result);
|
2634 |
|
|
#endif
|
2635 |
|
|
return result;
|
2636 |
|
|
}
|
2637 |
|
|
|
2638 |
|
|
static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
|
2639 |
|
|
{
|
2640 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
2641 |
|
|
if (atomic_read(&substream->mmap_count))
|
2642 |
|
|
return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
|
2643 |
|
|
else
|
2644 |
|
|
return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames;
|
2645 |
|
|
}
|
2646 |
|
|
|
2647 |
|
|
static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
|
2648 |
|
|
{
|
2649 |
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
2650 |
|
|
if (atomic_read(&substream->mmap_count))
|
2651 |
|
|
return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
|
2652 |
|
|
else
|
2653 |
|
|
return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames;
|
2654 |
|
|
}
|
2655 |
|
|
|
2656 |
|
|
static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
|
2657 |
|
|
{
|
2658 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2659 |
|
|
unsigned int mask;
|
2660 |
|
|
struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
|
2661 |
|
|
|
2662 |
|
|
pcm_oss_file = file->private_data;
|
2663 |
|
|
|
2664 |
|
|
psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2665 |
|
|
csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2666 |
|
|
|
2667 |
|
|
mask = 0;
|
2668 |
|
|
if (psubstream != NULL) {
|
2669 |
|
|
struct snd_pcm_runtime *runtime = psubstream->runtime;
|
2670 |
|
|
poll_wait(file, &runtime->sleep, wait);
|
2671 |
|
|
snd_pcm_stream_lock_irq(psubstream);
|
2672 |
|
|
if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
|
2673 |
|
|
(runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
|
2674 |
|
|
snd_pcm_oss_playback_ready(psubstream)))
|
2675 |
|
|
mask |= POLLOUT | POLLWRNORM;
|
2676 |
|
|
snd_pcm_stream_unlock_irq(psubstream);
|
2677 |
|
|
}
|
2678 |
|
|
if (csubstream != NULL) {
|
2679 |
|
|
struct snd_pcm_runtime *runtime = csubstream->runtime;
|
2680 |
|
|
snd_pcm_state_t ostate;
|
2681 |
|
|
poll_wait(file, &runtime->sleep, wait);
|
2682 |
|
|
snd_pcm_stream_lock_irq(csubstream);
|
2683 |
|
|
if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING ||
|
2684 |
|
|
snd_pcm_oss_capture_ready(csubstream))
|
2685 |
|
|
mask |= POLLIN | POLLRDNORM;
|
2686 |
|
|
snd_pcm_stream_unlock_irq(csubstream);
|
2687 |
|
|
if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) {
|
2688 |
|
|
struct snd_pcm_oss_file ofile;
|
2689 |
|
|
memset(&ofile, 0, sizeof(ofile));
|
2690 |
|
|
ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2691 |
|
|
runtime->oss.trigger = 0;
|
2692 |
|
|
snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT);
|
2693 |
|
|
}
|
2694 |
|
|
}
|
2695 |
|
|
|
2696 |
|
|
return mask;
|
2697 |
|
|
}
|
2698 |
|
|
|
2699 |
|
|
static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
|
2700 |
|
|
{
|
2701 |
|
|
struct snd_pcm_oss_file *pcm_oss_file;
|
2702 |
|
|
struct snd_pcm_substream *substream = NULL;
|
2703 |
|
|
struct snd_pcm_runtime *runtime;
|
2704 |
|
|
int err;
|
2705 |
|
|
|
2706 |
|
|
#ifdef OSS_DEBUG
|
2707 |
|
|
printk("pcm_oss: mmap begin\n");
|
2708 |
|
|
#endif
|
2709 |
|
|
pcm_oss_file = file->private_data;
|
2710 |
|
|
switch ((area->vm_flags & (VM_READ | VM_WRITE))) {
|
2711 |
|
|
case VM_READ | VM_WRITE:
|
2712 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2713 |
|
|
if (substream)
|
2714 |
|
|
break;
|
2715 |
|
|
/* Fall through */
|
2716 |
|
|
case VM_READ:
|
2717 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
|
2718 |
|
|
break;
|
2719 |
|
|
case VM_WRITE:
|
2720 |
|
|
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
|
2721 |
|
|
break;
|
2722 |
|
|
default:
|
2723 |
|
|
return -EINVAL;
|
2724 |
|
|
}
|
2725 |
|
|
/* set VM_READ access as well to fix memset() routines that do
|
2726 |
|
|
reads before writes (to improve performance) */
|
2727 |
|
|
area->vm_flags |= VM_READ;
|
2728 |
|
|
if (substream == NULL)
|
2729 |
|
|
return -ENXIO;
|
2730 |
|
|
runtime = substream->runtime;
|
2731 |
|
|
if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID))
|
2732 |
|
|
return -EIO;
|
2733 |
|
|
if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED)
|
2734 |
|
|
runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED;
|
2735 |
|
|
else
|
2736 |
|
|
return -EIO;
|
2737 |
|
|
|
2738 |
|
|
if (runtime->oss.params) {
|
2739 |
|
|
if ((err = snd_pcm_oss_change_params(substream)) < 0)
|
2740 |
|
|
return err;
|
2741 |
|
|
}
|
2742 |
|
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
|
2743 |
|
|
if (runtime->oss.plugin_first != NULL)
|
2744 |
|
|
return -EIO;
|
2745 |
|
|
#endif
|
2746 |
|
|
|
2747 |
|
|
if (area->vm_pgoff != 0)
|
2748 |
|
|
return -EINVAL;
|
2749 |
|
|
|
2750 |
|
|
err = snd_pcm_mmap_data(substream, file, area);
|
2751 |
|
|
if (err < 0)
|
2752 |
|
|
return err;
|
2753 |
|
|
runtime->oss.mmap_bytes = area->vm_end - area->vm_start;
|
2754 |
|
|
runtime->silence_threshold = 0;
|
2755 |
|
|
runtime->silence_size = 0;
|
2756 |
|
|
#ifdef OSS_DEBUG
|
2757 |
|
|
printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes);
|
2758 |
|
|
#endif
|
2759 |
|
|
/* In mmap mode we never stop */
|
2760 |
|
|
runtime->stop_threshold = runtime->boundary;
|
2761 |
|
|
|
2762 |
|
|
return 0;
|
2763 |
|
|
}
|
2764 |
|
|
|
2765 |
|
|
#ifdef CONFIG_SND_VERBOSE_PROCFS
|
2766 |
|
|
/*
|
2767 |
|
|
* /proc interface
|
2768 |
|
|
*/
|
2769 |
|
|
|
2770 |
|
|
static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
|
2771 |
|
|
struct snd_info_buffer *buffer)
|
2772 |
|
|
{
|
2773 |
|
|
struct snd_pcm_str *pstr = entry->private_data;
|
2774 |
|
|
struct snd_pcm_oss_setup *setup = pstr->oss.setup_list;
|
2775 |
|
|
mutex_lock(&pstr->oss.setup_mutex);
|
2776 |
|
|
while (setup) {
|
2777 |
|
|
snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n",
|
2778 |
|
|
setup->task_name,
|
2779 |
|
|
setup->periods,
|
2780 |
|
|
setup->period_size,
|
2781 |
|
|
setup->disable ? " disable" : "",
|
2782 |
|
|
setup->direct ? " direct" : "",
|
2783 |
|
|
setup->block ? " block" : "",
|
2784 |
|
|
setup->nonblock ? " non-block" : "",
|
2785 |
|
|
setup->partialfrag ? " partial-frag" : "",
|
2786 |
|
|
setup->nosilence ? " no-silence" : "");
|
2787 |
|
|
setup = setup->next;
|
2788 |
|
|
}
|
2789 |
|
|
mutex_unlock(&pstr->oss.setup_mutex);
|
2790 |
|
|
}
|
2791 |
|
|
|
2792 |
|
|
static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
|
2793 |
|
|
{
|
2794 |
|
|
struct snd_pcm_oss_setup *setup, *setupn;
|
2795 |
|
|
|
2796 |
|
|
for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL;
|
2797 |
|
|
setup; setup = setupn) {
|
2798 |
|
|
setupn = setup->next;
|
2799 |
|
|
kfree(setup->task_name);
|
2800 |
|
|
kfree(setup);
|
2801 |
|
|
}
|
2802 |
|
|
pstr->oss.setup_list = NULL;
|
2803 |
|
|
}
|
2804 |
|
|
|
2805 |
|
|
static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
|
2806 |
|
|
struct snd_info_buffer *buffer)
|
2807 |
|
|
{
|
2808 |
|
|
struct snd_pcm_str *pstr = entry->private_data;
|
2809 |
|
|
char line[128], str[32], task_name[32], *ptr;
|
2810 |
|
|
int idx1;
|
2811 |
|
|
struct snd_pcm_oss_setup *setup, *setup1, template;
|
2812 |
|
|
|
2813 |
|
|
while (!snd_info_get_line(buffer, line, sizeof(line))) {
|
2814 |
|
|
mutex_lock(&pstr->oss.setup_mutex);
|
2815 |
|
|
memset(&template, 0, sizeof(template));
|
2816 |
|
|
ptr = snd_info_get_str(task_name, line, sizeof(task_name));
|
2817 |
|
|
if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) {
|
2818 |
|
|
snd_pcm_oss_proc_free_setup_list(pstr);
|
2819 |
|
|
mutex_unlock(&pstr->oss.setup_mutex);
|
2820 |
|
|
continue;
|
2821 |
|
|
}
|
2822 |
|
|
for (setup = pstr->oss.setup_list; setup; setup = setup->next) {
|
2823 |
|
|
if (!strcmp(setup->task_name, task_name)) {
|
2824 |
|
|
template = *setup;
|
2825 |
|
|
break;
|
2826 |
|
|
}
|
2827 |
|
|
}
|
2828 |
|
|
ptr = snd_info_get_str(str, ptr, sizeof(str));
|
2829 |
|
|
template.periods = simple_strtoul(str, NULL, 10);
|
2830 |
|
|
ptr = snd_info_get_str(str, ptr, sizeof(str));
|
2831 |
|
|
template.period_size = simple_strtoul(str, NULL, 10);
|
2832 |
|
|
for (idx1 = 31; idx1 >= 0; idx1--)
|
2833 |
|
|
if (template.period_size & (1 << idx1))
|
2834 |
|
|
break;
|
2835 |
|
|
for (idx1--; idx1 >= 0; idx1--)
|
2836 |
|
|
template.period_size &= ~(1 << idx1);
|
2837 |
|
|
do {
|
2838 |
|
|
ptr = snd_info_get_str(str, ptr, sizeof(str));
|
2839 |
|
|
if (!strcmp(str, "disable")) {
|
2840 |
|
|
template.disable = 1;
|
2841 |
|
|
} else if (!strcmp(str, "direct")) {
|
2842 |
|
|
template.direct = 1;
|
2843 |
|
|
} else if (!strcmp(str, "block")) {
|
2844 |
|
|
template.block = 1;
|
2845 |
|
|
} else if (!strcmp(str, "non-block")) {
|
2846 |
|
|
template.nonblock = 1;
|
2847 |
|
|
} else if (!strcmp(str, "partial-frag")) {
|
2848 |
|
|
template.partialfrag = 1;
|
2849 |
|
|
} else if (!strcmp(str, "no-silence")) {
|
2850 |
|
|
template.nosilence = 1;
|
2851 |
|
|
} else if (!strcmp(str, "buggy-ptr")) {
|
2852 |
|
|
template.buggyptr = 1;
|
2853 |
|
|
}
|
2854 |
|
|
} while (*str);
|
2855 |
|
|
if (setup == NULL) {
|
2856 |
|
|
setup = kmalloc(sizeof(*setup), GFP_KERNEL);
|
2857 |
|
|
if (! setup) {
|
2858 |
|
|
buffer->error = -ENOMEM;
|
2859 |
|
|
mutex_lock(&pstr->oss.setup_mutex);
|
2860 |
|
|
return;
|
2861 |
|
|
}
|
2862 |
|
|
if (pstr->oss.setup_list == NULL)
|
2863 |
|
|
pstr->oss.setup_list = setup;
|
2864 |
|
|
else {
|
2865 |
|
|
for (setup1 = pstr->oss.setup_list;
|
2866 |
|
|
setup1->next; setup1 = setup1->next);
|
2867 |
|
|
setup1->next = setup;
|
2868 |
|
|
}
|
2869 |
|
|
template.task_name = kstrdup(task_name, GFP_KERNEL);
|
2870 |
|
|
if (! template.task_name) {
|
2871 |
|
|
kfree(setup);
|
2872 |
|
|
buffer->error = -ENOMEM;
|
2873 |
|
|
mutex_lock(&pstr->oss.setup_mutex);
|
2874 |
|
|
return;
|
2875 |
|
|
}
|
2876 |
|
|
}
|
2877 |
|
|
*setup = template;
|
2878 |
|
|
mutex_unlock(&pstr->oss.setup_mutex);
|
2879 |
|
|
}
|
2880 |
|
|
}
|
2881 |
|
|
|
2882 |
|
|
static void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
|
2883 |
|
|
{
|
2884 |
|
|
int stream;
|
2885 |
|
|
for (stream = 0; stream < 2; ++stream) {
|
2886 |
|
|
struct snd_info_entry *entry;
|
2887 |
|
|
struct snd_pcm_str *pstr = &pcm->streams[stream];
|
2888 |
|
|
if (pstr->substream_count == 0)
|
2889 |
|
|
continue;
|
2890 |
|
|
if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) {
|
2891 |
|
|
entry->content = SNDRV_INFO_CONTENT_TEXT;
|
2892 |
|
|
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
|
2893 |
|
|
entry->c.text.read = snd_pcm_oss_proc_read;
|
2894 |
|
|
entry->c.text.write = snd_pcm_oss_proc_write;
|
2895 |
|
|
entry->private_data = pstr;
|
2896 |
|
|
if (snd_info_register(entry) < 0) {
|
2897 |
|
|
snd_info_free_entry(entry);
|
2898 |
|
|
entry = NULL;
|
2899 |
|
|
}
|
2900 |
|
|
}
|
2901 |
|
|
pstr->oss.proc_entry = entry;
|
2902 |
|
|
}
|
2903 |
|
|
}
|
2904 |
|
|
|
2905 |
|
|
static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
|
2906 |
|
|
{
|
2907 |
|
|
int stream;
|
2908 |
|
|
for (stream = 0; stream < 2; ++stream) {
|
2909 |
|
|
struct snd_pcm_str *pstr = &pcm->streams[stream];
|
2910 |
|
|
snd_info_free_entry(pstr->oss.proc_entry);
|
2911 |
|
|
pstr->oss.proc_entry = NULL;
|
2912 |
|
|
snd_pcm_oss_proc_free_setup_list(pstr);
|
2913 |
|
|
}
|
2914 |
|
|
}
|
2915 |
|
|
#else /* !CONFIG_SND_VERBOSE_PROCFS */
|
2916 |
|
|
#define snd_pcm_oss_proc_init(pcm)
|
2917 |
|
|
#define snd_pcm_oss_proc_done(pcm)
|
2918 |
|
|
#endif /* CONFIG_SND_VERBOSE_PROCFS */
|
2919 |
|
|
|
2920 |
|
|
/*
|
2921 |
|
|
* ENTRY functions
|
2922 |
|
|
*/
|
2923 |
|
|
|
2924 |
|
|
static const struct file_operations snd_pcm_oss_f_reg =
|
2925 |
|
|
{
|
2926 |
|
|
.owner = THIS_MODULE,
|
2927 |
|
|
.read = snd_pcm_oss_read,
|
2928 |
|
|
.write = snd_pcm_oss_write,
|
2929 |
|
|
.open = snd_pcm_oss_open,
|
2930 |
|
|
.release = snd_pcm_oss_release,
|
2931 |
|
|
.poll = snd_pcm_oss_poll,
|
2932 |
|
|
.unlocked_ioctl = snd_pcm_oss_ioctl,
|
2933 |
|
|
.compat_ioctl = snd_pcm_oss_ioctl_compat,
|
2934 |
|
|
.mmap = snd_pcm_oss_mmap,
|
2935 |
|
|
};
|
2936 |
|
|
|
2937 |
|
|
static void register_oss_dsp(struct snd_pcm *pcm, int index)
|
2938 |
|
|
{
|
2939 |
|
|
char name[128];
|
2940 |
|
|
sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
|
2941 |
|
|
if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
|
2942 |
|
|
pcm->card, index, &snd_pcm_oss_f_reg,
|
2943 |
|
|
pcm, name) < 0) {
|
2944 |
|
|
snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
|
2945 |
|
|
pcm->card->number, pcm->device);
|
2946 |
|
|
}
|
2947 |
|
|
}
|
2948 |
|
|
|
2949 |
|
|
static int snd_pcm_oss_register_minor(struct snd_pcm *pcm)
|
2950 |
|
|
{
|
2951 |
|
|
pcm->oss.reg = 0;
|
2952 |
|
|
if (dsp_map[pcm->card->number] == (int)pcm->device) {
|
2953 |
|
|
char name[128];
|
2954 |
|
|
int duplex;
|
2955 |
|
|
register_oss_dsp(pcm, 0);
|
2956 |
|
|
duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 &&
|
2957 |
|
|
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count &&
|
2958 |
|
|
!(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX));
|
2959 |
|
|
sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : "");
|
2960 |
|
|
#ifdef SNDRV_OSS_INFO_DEV_AUDIO
|
2961 |
|
|
snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO,
|
2962 |
|
|
pcm->card->number,
|
2963 |
|
|
name);
|
2964 |
|
|
#endif
|
2965 |
|
|
pcm->oss.reg++;
|
2966 |
|
|
pcm->oss.reg_mask |= 1;
|
2967 |
|
|
}
|
2968 |
|
|
if (adsp_map[pcm->card->number] == (int)pcm->device) {
|
2969 |
|
|
register_oss_dsp(pcm, 1);
|
2970 |
|
|
pcm->oss.reg++;
|
2971 |
|
|
pcm->oss.reg_mask |= 2;
|
2972 |
|
|
}
|
2973 |
|
|
|
2974 |
|
|
if (pcm->oss.reg)
|
2975 |
|
|
snd_pcm_oss_proc_init(pcm);
|
2976 |
|
|
|
2977 |
|
|
return 0;
|
2978 |
|
|
}
|
2979 |
|
|
|
2980 |
|
|
static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm)
|
2981 |
|
|
{
|
2982 |
|
|
if (pcm->oss.reg) {
|
2983 |
|
|
if (pcm->oss.reg_mask & 1) {
|
2984 |
|
|
pcm->oss.reg_mask &= ~1;
|
2985 |
|
|
snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
|
2986 |
|
|
pcm->card, 0);
|
2987 |
|
|
}
|
2988 |
|
|
if (pcm->oss.reg_mask & 2) {
|
2989 |
|
|
pcm->oss.reg_mask &= ~2;
|
2990 |
|
|
snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
|
2991 |
|
|
pcm->card, 1);
|
2992 |
|
|
}
|
2993 |
|
|
if (dsp_map[pcm->card->number] == (int)pcm->device) {
|
2994 |
|
|
#ifdef SNDRV_OSS_INFO_DEV_AUDIO
|
2995 |
|
|
snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number);
|
2996 |
|
|
#endif
|
2997 |
|
|
}
|
2998 |
|
|
pcm->oss.reg = 0;
|
2999 |
|
|
}
|
3000 |
|
|
return 0;
|
3001 |
|
|
}
|
3002 |
|
|
|
3003 |
|
|
static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm)
|
3004 |
|
|
{
|
3005 |
|
|
snd_pcm_oss_disconnect_minor(pcm);
|
3006 |
|
|
snd_pcm_oss_proc_done(pcm);
|
3007 |
|
|
return 0;
|
3008 |
|
|
}
|
3009 |
|
|
|
3010 |
|
|
static struct snd_pcm_notify snd_pcm_oss_notify =
|
3011 |
|
|
{
|
3012 |
|
|
.n_register = snd_pcm_oss_register_minor,
|
3013 |
|
|
.n_disconnect = snd_pcm_oss_disconnect_minor,
|
3014 |
|
|
.n_unregister = snd_pcm_oss_unregister_minor,
|
3015 |
|
|
};
|
3016 |
|
|
|
3017 |
|
|
static int __init alsa_pcm_oss_init(void)
|
3018 |
|
|
{
|
3019 |
|
|
int i;
|
3020 |
|
|
int err;
|
3021 |
|
|
|
3022 |
|
|
/* check device map table */
|
3023 |
|
|
for (i = 0; i < SNDRV_CARDS; i++) {
|
3024 |
|
|
if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) {
|
3025 |
|
|
snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n",
|
3026 |
|
|
i, dsp_map[i]);
|
3027 |
|
|
dsp_map[i] = 0;
|
3028 |
|
|
}
|
3029 |
|
|
if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) {
|
3030 |
|
|
snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n",
|
3031 |
|
|
i, adsp_map[i]);
|
3032 |
|
|
adsp_map[i] = 1;
|
3033 |
|
|
}
|
3034 |
|
|
}
|
3035 |
|
|
if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0)
|
3036 |
|
|
return err;
|
3037 |
|
|
return 0;
|
3038 |
|
|
}
|
3039 |
|
|
|
3040 |
|
|
static void __exit alsa_pcm_oss_exit(void)
|
3041 |
|
|
{
|
3042 |
|
|
snd_pcm_notify(&snd_pcm_oss_notify, 1);
|
3043 |
|
|
}
|
3044 |
|
|
|
3045 |
|
|
module_init(alsa_pcm_oss_init)
|
3046 |
|
|
module_exit(alsa_pcm_oss_exit)
|