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[/] [or1k_old/] [trunk/] [mp3/] [sw/] [mad-xess/] [audio.h] - Rev 1765
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/* * mad - MPEG audio decoder * Copyright (C) 2000-2001 Robert Leslie * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * $Id: audio.h,v 1.3 2001-11-06 17:01:07 simons Exp $ */ # ifndef AUDIO_H # define AUDIO_H # include "mad.h" # define MAX_NSAMPLES (1152 * 3) /* allow for resampled frame */ enum audio_command { AUDIO_COMMAND_INIT, AUDIO_COMMAND_CONFIG, AUDIO_COMMAND_FINISH }; enum audio_mode { AUDIO_MODE_ROUND = 0x0001, AUDIO_MODE_DITHER = 0x0002 }; struct audio_stats { unsigned long clipped_samples; mad_fixed_t peak_clipping; mad_fixed_t peak_sample; }; union audio_control { enum audio_command command; struct audio_init { enum audio_command command; char const *path; } init; struct audio_config { enum audio_command command; unsigned int channels; unsigned int speed; } config; struct audio_play { enum audio_command command; unsigned int nsamples; mad_fixed_t const *samples[2]; enum audio_mode mode; struct audio_stats *stats; } play; struct audio_finish { enum audio_command command; } finish; }; extern char const *audio_error; typedef int audio_ctlfunc_t(union audio_control *); audio_ctlfunc_t *audio_output(char const **); audio_ctlfunc_t audio_oss; audio_ctlfunc_t audio_empeg; audio_ctlfunc_t audio_sun; audio_ctlfunc_t audio_win32; audio_ctlfunc_t audio_raw; audio_ctlfunc_t audio_wave; audio_ctlfunc_t audio_snd; audio_ctlfunc_t audio_hex; audio_ctlfunc_t audio_null; signed long audio_linear_round(unsigned int, mad_fixed_t, struct audio_stats *); signed long audio_linear_dither(unsigned int, mad_fixed_t, mad_fixed_t *, struct audio_stats *); unsigned int audio_pcm_s16le(unsigned char *, unsigned int, mad_fixed_t const *, mad_fixed_t const *); unsigned char audio_mulaw_round(mad_fixed_t); unsigned char audio_mulaw_dither(mad_fixed_t, mad_fixed_t *); unsigned int audio_pcm_mulaw(unsigned char *, unsigned int, mad_fixed_t const *, mad_fixed_t const *, enum audio_mode, struct audio_stats *); # endif
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