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1275 |
phoenix |
/*
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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, or (at your option)
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* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#define __NO_VERSION__ /* Temporary: usbvideo is not a module yet */
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/smp_lock.h>
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#include <linux/vmalloc.h>
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#include <linux/wrapper.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <asm/io.h>
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#include "usbvideo.h"
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#if defined(MAP_NR)
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#define virt_to_page(v) MAP_NR(v) /* Kernels 2.2.x */
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#endif
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static int video_nr = -1;
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MODULE_PARM(video_nr, "i");
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/*
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* Local prototypes.
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*/
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#if USES_PROC_FS
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static void usbvideo_procfs_level1_create(struct usbvideo *ut);
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static void usbvideo_procfs_level1_destroy(struct usbvideo *ut);
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static void usbvideo_procfs_level2_create(struct uvd *uvd);
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static void usbvideo_procfs_level2_destroy(struct uvd *uvd);
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static int usbvideo_default_procfs_read_proc(
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char *page, char **start, off_t off, int count,
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int *eof, void *data);
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static int usbvideo_default_procfs_write_proc(
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struct file *file, const char *buffer,
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unsigned long count, void *data);
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#endif
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/*******************************/
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/* Memory management functions */
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/*******************************/
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/*
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* Here we want the physical address of the memory.
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* This is used when initializing the contents of the area.
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*/
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unsigned long usbvideo_kvirt_to_pa(unsigned long adr)
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{
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unsigned long kva, ret;
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kva = (unsigned long) page_address(vmalloc_to_page((void *)adr));
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kva |= adr & (PAGE_SIZE-1); /* restore the offset */
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ret = __pa(kva);
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return ret;
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}
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void *usbvideo_rvmalloc(unsigned long size)
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{
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void *mem;
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unsigned long adr;
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size = PAGE_ALIGN(size);
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mem = vmalloc_32(size);
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if (!mem)
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return NULL;
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memset(mem, 0, size); /* Clear the ram out, no junk to the user */
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adr = (unsigned long) mem;
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while (size > 0) {
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mem_map_reserve(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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return mem;
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}
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void usbvideo_rvfree(void *mem, unsigned long size)
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{
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unsigned long adr;
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if (!mem)
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return;
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adr = (unsigned long) mem;
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while ((long) size > 0) {
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mem_map_unreserve(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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vfree(mem);
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}
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static void RingQueue_Initialize(struct RingQueue *rq)
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{
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assert(rq != NULL);
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init_waitqueue_head(&rq->wqh);
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}
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static void RingQueue_Allocate(struct RingQueue *rq, int rqLen)
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{
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/* Make sure the requested size is a power of 2 and
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round up if necessary. This allows index wrapping
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using masks rather than modulo */
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int i = 1;
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assert(rq != NULL);
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assert(rqLen > 0);
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while(rqLen >> i)
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i++;
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if(rqLen != 1 << (i-1))
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rqLen = 1 << i;
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rq->length = rqLen;
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rq->ri = rq->wi = 0;
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rq->queue = usbvideo_rvmalloc(rq->length);
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assert(rq->queue != NULL);
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}
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static int RingQueue_IsAllocated(const struct RingQueue *rq)
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{
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if (rq == NULL)
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return 0;
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return (rq->queue != NULL) && (rq->length > 0);
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}
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static void RingQueue_Free(struct RingQueue *rq)
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{
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assert(rq != NULL);
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if (RingQueue_IsAllocated(rq)) {
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usbvideo_rvfree(rq->queue, rq->length);
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rq->queue = NULL;
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rq->length = 0;
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}
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}
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int RingQueue_Dequeue(struct RingQueue *rq, unsigned char *dst, int len)
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{
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int rql, toread;
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assert(rq != NULL);
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assert(dst != NULL);
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rql = RingQueue_GetLength(rq);
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if(!rql)
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return 0;
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/* Clip requested length to available data */
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if(len > rql)
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len = rql;
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toread = len;
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if(rq->ri > rq->wi) {
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/* Read data from tail */
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int read = (toread < (rq->length - rq->ri)) ? toread : rq->length - rq->ri;
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memcpy(dst, rq->queue + rq->ri, read);
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toread -= read;
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dst += read;
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rq->ri = (rq->ri + read) & (rq->length-1);
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}
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if(toread) {
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/* Read data from head */
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memcpy(dst, rq->queue + rq->ri, toread);
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rq->ri = (rq->ri + toread) & (rq->length-1);
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}
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return len;
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}
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int RingQueue_Enqueue(struct RingQueue *rq, const unsigned char *cdata, int n)
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{
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int enqueued = 0;
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assert(rq != NULL);
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assert(cdata != NULL);
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assert(rq->length > 0);
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while (n > 0) {
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int m, q_avail;
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/* Calculate the largest chunk that fits the tail of the ring */
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q_avail = rq->length - rq->wi;
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if (q_avail <= 0) {
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rq->wi = 0;
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q_avail = rq->length;
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}
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m = n;
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assert(q_avail > 0);
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if (m > q_avail)
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m = q_avail;
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memcpy(rq->queue + rq->wi, cdata, m);
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RING_QUEUE_ADVANCE_INDEX(rq, wi, m);
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cdata += m;
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enqueued += m;
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n -= m;
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}
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return enqueued;
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}
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static void RingQueue_InterruptibleSleepOn(struct RingQueue *rq)
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{
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assert(rq != NULL);
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interruptible_sleep_on(&rq->wqh);
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}
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void RingQueue_WakeUpInterruptible(struct RingQueue *rq)
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{
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assert(rq != NULL);
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if (waitqueue_active(&rq->wqh))
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wake_up_interruptible(&rq->wqh);
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}
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void RingQueue_Flush(struct RingQueue *rq)
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{
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assert(rq != NULL);
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rq->ri = 0;
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rq->wi = 0;
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}
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/*
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* usbvideo_VideosizeToString()
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*
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* This procedure converts given videosize value to readable string.
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*
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* History:
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* 07-Aug-2000 Created.
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* 19-Oct-2000 Reworked for usbvideo module.
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*/
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void usbvideo_VideosizeToString(char *buf, int bufLen, videosize_t vs)
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{
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char tmp[40];
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int n;
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n = 1 + sprintf(tmp, "%ldx%ld", VIDEOSIZE_X(vs), VIDEOSIZE_Y(vs));
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assert(n < sizeof(tmp));
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if ((buf == NULL) || (bufLen < n))
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err("usbvideo_VideosizeToString: buffer is too small.");
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else
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memmove(buf, tmp, n);
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}
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/*
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* usbvideo_OverlayChar()
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*
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* History:
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* 01-Feb-2000 Created.
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*/
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void usbvideo_OverlayChar(struct uvd *uvd, struct usbvideo_frame *frame,
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int x, int y, int ch)
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{
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static const unsigned short digits[16] = {
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0xF6DE, /* 0 */
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0x2492, /* 1 */
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0xE7CE, /* 2 */
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0xE79E, /* 3 */
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0xB792, /* 4 */
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0xF39E, /* 5 */
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0xF3DE, /* 6 */
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0xF492, /* 7 */
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0xF7DE, /* 8 */
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0xF79E, /* 9 */
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0x77DA, /* a */
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0xD75C, /* b */
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0xF24E, /* c */
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0xD6DC, /* d */
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0xF34E, /* e */
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0xF348 /* f */
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};
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unsigned short digit;
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int ix, iy;
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if ((uvd == NULL) || (frame == NULL))
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return;
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if (ch >= '0' && ch <= '9')
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ch -= '0';
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else if (ch >= 'A' && ch <= 'F')
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ch = 10 + (ch - 'A');
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else if (ch >= 'a' && ch <= 'f')
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ch = 10 + (ch - 'a');
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else
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return;
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digit = digits[ch];
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for (iy=0; iy < 5; iy++) {
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for (ix=0; ix < 3; ix++) {
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if (digit & 0x8000) {
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if (uvd->paletteBits & (1L << VIDEO_PALETTE_RGB24)) {
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/* TODO */ RGB24_PUTPIXEL(frame, x+ix, y+iy, 0xFF, 0xFF, 0xFF);
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}
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}
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digit = digit << 1;
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}
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}
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}
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/*
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* usbvideo_OverlayString()
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*
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* History:
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* 01-Feb-2000 Created.
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*/
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void usbvideo_OverlayString(struct uvd *uvd, struct usbvideo_frame *frame,
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int x, int y, const char *str)
|
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{
|
325 |
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while (*str) {
|
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usbvideo_OverlayChar(uvd, frame, x, y, *str);
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str++;
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x += 4; /* 3 pixels character + 1 space */
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329 |
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}
|
330 |
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}
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331 |
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332 |
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/*
|
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* usbvideo_OverlayStats()
|
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*
|
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* Overlays important debugging information.
|
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*
|
337 |
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* History:
|
338 |
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* 01-Feb-2000 Created.
|
339 |
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*/
|
340 |
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void usbvideo_OverlayStats(struct uvd *uvd, struct usbvideo_frame *frame)
|
341 |
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{
|
342 |
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const int y_diff = 8;
|
343 |
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char tmp[16];
|
344 |
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int x = 10, y=10;
|
345 |
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long i, j, barLength;
|
346 |
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const int qi_x1 = 60, qi_y1 = 10;
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347 |
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const int qi_x2 = VIDEOSIZE_X(frame->request) - 10, qi_h = 10;
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348 |
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|
349 |
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/* Call the user callback, see if we may proceed after that */
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350 |
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if (VALID_CALLBACK(uvd, overlayHook)) {
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351 |
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if (GET_CALLBACK(uvd, overlayHook)(uvd, frame) < 0)
|
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return;
|
353 |
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}
|
354 |
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|
355 |
|
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/*
|
356 |
|
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* We draw a (mostly) hollow rectangle with qi_xxx coordinates.
|
357 |
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* Left edge symbolizes the queue index 0; right edge symbolizes
|
358 |
|
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* the full capacity of the queue.
|
359 |
|
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*/
|
360 |
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barLength = qi_x2 - qi_x1 - 2;
|
361 |
|
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if ((barLength > 10) && (uvd->paletteBits & (1L << VIDEO_PALETTE_RGB24))) {
|
362 |
|
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/* TODO */ long u_lo, u_hi, q_used;
|
363 |
|
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long m_ri, m_wi, m_lo, m_hi;
|
364 |
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|
365 |
|
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/*
|
366 |
|
|
* Determine fill zones (used areas of the queue):
|
367 |
|
|
* 0 xxxxxxx u_lo ...... uvd->dp.ri xxxxxxxx u_hi ..... uvd->dp.length
|
368 |
|
|
*
|
369 |
|
|
* if u_lo < 0 then there is no first filler.
|
370 |
|
|
*/
|
371 |
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|
372 |
|
|
q_used = RingQueue_GetLength(&uvd->dp);
|
373 |
|
|
if ((uvd->dp.ri + q_used) >= uvd->dp.length) {
|
374 |
|
|
u_hi = uvd->dp.length;
|
375 |
|
|
u_lo = (q_used + uvd->dp.ri) & (uvd->dp.length-1);
|
376 |
|
|
} else {
|
377 |
|
|
u_hi = (q_used + uvd->dp.ri);
|
378 |
|
|
u_lo = -1;
|
379 |
|
|
}
|
380 |
|
|
|
381 |
|
|
/* Convert byte indices into screen units */
|
382 |
|
|
m_ri = qi_x1 + ((barLength * uvd->dp.ri) / uvd->dp.length);
|
383 |
|
|
m_wi = qi_x1 + ((barLength * uvd->dp.wi) / uvd->dp.length);
|
384 |
|
|
m_lo = (u_lo > 0) ? (qi_x1 + ((barLength * u_lo) / uvd->dp.length)) : -1;
|
385 |
|
|
m_hi = qi_x1 + ((barLength * u_hi) / uvd->dp.length);
|
386 |
|
|
|
387 |
|
|
for (j=qi_y1; j < (qi_y1 + qi_h); j++) {
|
388 |
|
|
for (i=qi_x1; i < qi_x2; i++) {
|
389 |
|
|
/* Draw border lines */
|
390 |
|
|
if ((j == qi_y1) || (j == (qi_y1 + qi_h - 1)) ||
|
391 |
|
|
(i == qi_x1) || (i == (qi_x2 - 1))) {
|
392 |
|
|
RGB24_PUTPIXEL(frame, i, j, 0xFF, 0xFF, 0xFF);
|
393 |
|
|
continue;
|
394 |
|
|
}
|
395 |
|
|
/* For all other points the Y coordinate does not matter */
|
396 |
|
|
if ((i >= m_ri) && (i <= (m_ri + 3))) {
|
397 |
|
|
RGB24_PUTPIXEL(frame, i, j, 0x00, 0xFF, 0x00);
|
398 |
|
|
} else if ((i >= m_wi) && (i <= (m_wi + 3))) {
|
399 |
|
|
RGB24_PUTPIXEL(frame, i, j, 0xFF, 0x00, 0x00);
|
400 |
|
|
} else if ((i < m_lo) || ((i > m_ri) && (i < m_hi)))
|
401 |
|
|
RGB24_PUTPIXEL(frame, i, j, 0x00, 0x00, 0xFF);
|
402 |
|
|
}
|
403 |
|
|
}
|
404 |
|
|
}
|
405 |
|
|
|
406 |
|
|
sprintf(tmp, "%8lx", uvd->stats.frame_num);
|
407 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
408 |
|
|
y += y_diff;
|
409 |
|
|
|
410 |
|
|
sprintf(tmp, "%8lx", uvd->stats.urb_count);
|
411 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
412 |
|
|
y += y_diff;
|
413 |
|
|
|
414 |
|
|
sprintf(tmp, "%8lx", uvd->stats.urb_length);
|
415 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
416 |
|
|
y += y_diff;
|
417 |
|
|
|
418 |
|
|
sprintf(tmp, "%8lx", uvd->stats.data_count);
|
419 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
420 |
|
|
y += y_diff;
|
421 |
|
|
|
422 |
|
|
sprintf(tmp, "%8lx", uvd->stats.header_count);
|
423 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
424 |
|
|
y += y_diff;
|
425 |
|
|
|
426 |
|
|
sprintf(tmp, "%8lx", uvd->stats.iso_skip_count);
|
427 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
428 |
|
|
y += y_diff;
|
429 |
|
|
|
430 |
|
|
sprintf(tmp, "%8lx", uvd->stats.iso_err_count);
|
431 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
432 |
|
|
y += y_diff;
|
433 |
|
|
|
434 |
|
|
sprintf(tmp, "%8x", uvd->vpic.colour);
|
435 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
436 |
|
|
y += y_diff;
|
437 |
|
|
|
438 |
|
|
sprintf(tmp, "%8x", uvd->vpic.hue);
|
439 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
440 |
|
|
y += y_diff;
|
441 |
|
|
|
442 |
|
|
sprintf(tmp, "%8x", uvd->vpic.brightness >> 8);
|
443 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
444 |
|
|
y += y_diff;
|
445 |
|
|
|
446 |
|
|
sprintf(tmp, "%8x", uvd->vpic.contrast >> 12);
|
447 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
448 |
|
|
y += y_diff;
|
449 |
|
|
|
450 |
|
|
sprintf(tmp, "%8d", uvd->vpic.whiteness >> 8);
|
451 |
|
|
usbvideo_OverlayString(uvd, frame, x, y, tmp);
|
452 |
|
|
y += y_diff;
|
453 |
|
|
}
|
454 |
|
|
|
455 |
|
|
/*
|
456 |
|
|
* usbvideo_ReportStatistics()
|
457 |
|
|
*
|
458 |
|
|
* This procedure prints packet and transfer statistics.
|
459 |
|
|
*
|
460 |
|
|
* History:
|
461 |
|
|
* 14-Jan-2000 Corrected default multiplier.
|
462 |
|
|
*/
|
463 |
|
|
void usbvideo_ReportStatistics(const struct uvd *uvd)
|
464 |
|
|
{
|
465 |
|
|
if ((uvd != NULL) && (uvd->stats.urb_count > 0)) {
|
466 |
|
|
unsigned long allPackets, badPackets, goodPackets, percent;
|
467 |
|
|
allPackets = uvd->stats.urb_count * CAMERA_URB_FRAMES;
|
468 |
|
|
badPackets = uvd->stats.iso_skip_count + uvd->stats.iso_err_count;
|
469 |
|
|
goodPackets = allPackets - badPackets;
|
470 |
|
|
/* Calculate percentage wisely, remember integer limits */
|
471 |
|
|
assert(allPackets != 0);
|
472 |
|
|
if (goodPackets < (((unsigned long)-1)/100))
|
473 |
|
|
percent = (100 * goodPackets) / allPackets;
|
474 |
|
|
else
|
475 |
|
|
percent = goodPackets / (allPackets / 100);
|
476 |
|
|
info("Packet Statistics: Total=%lu. Empty=%lu. Usage=%lu%%",
|
477 |
|
|
allPackets, badPackets, percent);
|
478 |
|
|
if (uvd->iso_packet_len > 0) {
|
479 |
|
|
unsigned long allBytes, xferBytes;
|
480 |
|
|
char multiplier = ' ';
|
481 |
|
|
allBytes = allPackets * uvd->iso_packet_len;
|
482 |
|
|
xferBytes = uvd->stats.data_count;
|
483 |
|
|
assert(allBytes != 0);
|
484 |
|
|
if (xferBytes < (((unsigned long)-1)/100))
|
485 |
|
|
percent = (100 * xferBytes) / allBytes;
|
486 |
|
|
else
|
487 |
|
|
percent = xferBytes / (allBytes / 100);
|
488 |
|
|
/* Scale xferBytes for easy reading */
|
489 |
|
|
if (xferBytes > 10*1024) {
|
490 |
|
|
xferBytes /= 1024;
|
491 |
|
|
multiplier = 'K';
|
492 |
|
|
if (xferBytes > 10*1024) {
|
493 |
|
|
xferBytes /= 1024;
|
494 |
|
|
multiplier = 'M';
|
495 |
|
|
if (xferBytes > 10*1024) {
|
496 |
|
|
xferBytes /= 1024;
|
497 |
|
|
multiplier = 'G';
|
498 |
|
|
if (xferBytes > 10*1024) {
|
499 |
|
|
xferBytes /= 1024;
|
500 |
|
|
multiplier = 'T';
|
501 |
|
|
}
|
502 |
|
|
}
|
503 |
|
|
}
|
504 |
|
|
}
|
505 |
|
|
info("Transfer Statistics: Transferred=%lu%cB Usage=%lu%%",
|
506 |
|
|
xferBytes, multiplier, percent);
|
507 |
|
|
}
|
508 |
|
|
}
|
509 |
|
|
}
|
510 |
|
|
|
511 |
|
|
/*
|
512 |
|
|
* usbvideo_DrawLine()
|
513 |
|
|
*
|
514 |
|
|
* A standard implementation of Bresenham's line drawing algorithm.
|
515 |
|
|
* This procedure is provided primarily for debugging or demo
|
516 |
|
|
* purposes.
|
517 |
|
|
*/
|
518 |
|
|
void usbvideo_DrawLine(
|
519 |
|
|
struct usbvideo_frame *frame,
|
520 |
|
|
int x1, int y1,
|
521 |
|
|
int x2, int y2,
|
522 |
|
|
unsigned char cr, unsigned char cg, unsigned char cb)
|
523 |
|
|
{
|
524 |
|
|
int i, dx, dy, np, d;
|
525 |
|
|
int dinc1, dinc2, x, xinc1, xinc2, y, yinc1, yinc2;
|
526 |
|
|
|
527 |
|
|
if ((dx = x2 - x1) < 0)
|
528 |
|
|
dx = -dx;
|
529 |
|
|
if ((dy = y2 - y1) < 0)
|
530 |
|
|
dy = -dy;
|
531 |
|
|
if (dx >= dy) {
|
532 |
|
|
np = dx + 1;
|
533 |
|
|
d = (2 * dy) - dx;
|
534 |
|
|
dinc1 = dy << 1;
|
535 |
|
|
dinc2 = (dy - dx) << 1;
|
536 |
|
|
xinc1 = 1;
|
537 |
|
|
xinc2 = 1;
|
538 |
|
|
yinc1 = 0;
|
539 |
|
|
yinc2 = 1;
|
540 |
|
|
} else {
|
541 |
|
|
np = dy + 1;
|
542 |
|
|
d = (2 * dx) - dy;
|
543 |
|
|
dinc1 = dx << 1;
|
544 |
|
|
dinc2 = (dx - dy) << 1;
|
545 |
|
|
xinc1 = 0;
|
546 |
|
|
xinc2 = 1;
|
547 |
|
|
yinc1 = 1;
|
548 |
|
|
yinc2 = 1;
|
549 |
|
|
}
|
550 |
|
|
/* Make sure x and y move in the right directions */
|
551 |
|
|
if (x1 > x2) {
|
552 |
|
|
xinc1 = -xinc1;
|
553 |
|
|
xinc2 = -xinc2;
|
554 |
|
|
}
|
555 |
|
|
if (y1 > y2) {
|
556 |
|
|
yinc1 = -yinc1;
|
557 |
|
|
yinc2 = -yinc2;
|
558 |
|
|
}
|
559 |
|
|
for (i=0, x=x1, y=y1; i < np; i++) {
|
560 |
|
|
if (frame->palette == VIDEO_PALETTE_RGB24) {
|
561 |
|
|
/* TODO */ RGB24_PUTPIXEL(frame, x, y, cr, cg, cb);
|
562 |
|
|
}
|
563 |
|
|
if (d < 0) {
|
564 |
|
|
d += dinc1;
|
565 |
|
|
x += xinc1;
|
566 |
|
|
y += yinc1;
|
567 |
|
|
} else {
|
568 |
|
|
d += dinc2;
|
569 |
|
|
x += xinc2;
|
570 |
|
|
y += yinc2;
|
571 |
|
|
}
|
572 |
|
|
}
|
573 |
|
|
}
|
574 |
|
|
|
575 |
|
|
/*
|
576 |
|
|
* usbvideo_TestPattern()
|
577 |
|
|
*
|
578 |
|
|
* Procedure forms a test pattern (yellow grid on blue background).
|
579 |
|
|
*
|
580 |
|
|
* Parameters:
|
581 |
|
|
* fullframe: if TRUE then entire frame is filled, otherwise the procedure
|
582 |
|
|
* continues from the current scanline.
|
583 |
|
|
* pmode 0: fill the frame with solid blue color (like on VCR or TV)
|
584 |
|
|
* 1: Draw a colored grid
|
585 |
|
|
*
|
586 |
|
|
* History:
|
587 |
|
|
* 01-Feb-2000 Created.
|
588 |
|
|
*/
|
589 |
|
|
void usbvideo_TestPattern(struct uvd *uvd, int fullframe, int pmode)
|
590 |
|
|
{
|
591 |
|
|
struct usbvideo_frame *frame;
|
592 |
|
|
int num_cell = 0;
|
593 |
|
|
int scan_length = 0;
|
594 |
|
|
static int num_pass = 0;
|
595 |
|
|
|
596 |
|
|
if (uvd == NULL) {
|
597 |
|
|
err("%s: uvd == NULL", __FUNCTION__);
|
598 |
|
|
return;
|
599 |
|
|
}
|
600 |
|
|
if ((uvd->curframe < 0) || (uvd->curframe >= USBVIDEO_NUMFRAMES)) {
|
601 |
|
|
err("%s: uvd->curframe=%d.", __FUNCTION__, uvd->curframe);
|
602 |
|
|
return;
|
603 |
|
|
}
|
604 |
|
|
|
605 |
|
|
/* Grab the current frame */
|
606 |
|
|
frame = &uvd->frame[uvd->curframe];
|
607 |
|
|
|
608 |
|
|
/* Optionally start at the beginning */
|
609 |
|
|
if (fullframe) {
|
610 |
|
|
frame->curline = 0;
|
611 |
|
|
frame->seqRead_Length = 0;
|
612 |
|
|
}
|
613 |
|
|
#if 0
|
614 |
|
|
{ /* For debugging purposes only */
|
615 |
|
|
char tmp[20];
|
616 |
|
|
usbvideo_VideosizeToString(tmp, sizeof(tmp), frame->request);
|
617 |
|
|
info("testpattern: frame=%s", tmp);
|
618 |
|
|
}
|
619 |
|
|
#endif
|
620 |
|
|
/* Form every scan line */
|
621 |
|
|
for (; frame->curline < VIDEOSIZE_Y(frame->request); frame->curline++) {
|
622 |
|
|
int i;
|
623 |
|
|
unsigned char *f = frame->data +
|
624 |
|
|
(VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL * frame->curline);
|
625 |
|
|
for (i=0; i < VIDEOSIZE_X(frame->request); i++) {
|
626 |
|
|
unsigned char cb=0x80;
|
627 |
|
|
unsigned char cg = 0;
|
628 |
|
|
unsigned char cr = 0;
|
629 |
|
|
|
630 |
|
|
if (pmode == 1) {
|
631 |
|
|
if (frame->curline % 32 == 0)
|
632 |
|
|
cb = 0, cg = cr = 0xFF;
|
633 |
|
|
else if (i % 32 == 0) {
|
634 |
|
|
if (frame->curline % 32 == 1)
|
635 |
|
|
num_cell++;
|
636 |
|
|
cb = 0, cg = cr = 0xFF;
|
637 |
|
|
} else {
|
638 |
|
|
cb = ((num_cell*7) + num_pass) & 0xFF;
|
639 |
|
|
cg = ((num_cell*5) + num_pass*2) & 0xFF;
|
640 |
|
|
cr = ((num_cell*3) + num_pass*3) & 0xFF;
|
641 |
|
|
}
|
642 |
|
|
} else {
|
643 |
|
|
/* Just the blue screen */
|
644 |
|
|
}
|
645 |
|
|
|
646 |
|
|
*f++ = cb;
|
647 |
|
|
*f++ = cg;
|
648 |
|
|
*f++ = cr;
|
649 |
|
|
scan_length += 3;
|
650 |
|
|
}
|
651 |
|
|
}
|
652 |
|
|
|
653 |
|
|
frame->frameState = FrameState_Done;
|
654 |
|
|
frame->seqRead_Length += scan_length;
|
655 |
|
|
++num_pass;
|
656 |
|
|
|
657 |
|
|
/* We do this unconditionally, regardless of FLAGS_OVERLAY_STATS */
|
658 |
|
|
usbvideo_OverlayStats(uvd, frame);
|
659 |
|
|
}
|
660 |
|
|
|
661 |
|
|
/*
|
662 |
|
|
* usbvideo_HexDump()
|
663 |
|
|
*
|
664 |
|
|
* A debugging tool. Prints hex dumps.
|
665 |
|
|
*
|
666 |
|
|
* History:
|
667 |
|
|
* 29-Jul-2000 Added printing of offsets.
|
668 |
|
|
*/
|
669 |
|
|
void usbvideo_HexDump(const unsigned char *data, int len)
|
670 |
|
|
{
|
671 |
|
|
const int bytes_per_line = 32;
|
672 |
|
|
char tmp[128]; /* 32*3 + 5 */
|
673 |
|
|
int i, k;
|
674 |
|
|
|
675 |
|
|
for (i=k=0; len > 0; i++, len--) {
|
676 |
|
|
if (i > 0 && ((i % bytes_per_line) == 0)) {
|
677 |
|
|
printk("%s\n", tmp);
|
678 |
|
|
k=0;
|
679 |
|
|
}
|
680 |
|
|
if ((i % bytes_per_line) == 0)
|
681 |
|
|
k += sprintf(&tmp[k], "%04x: ", i);
|
682 |
|
|
k += sprintf(&tmp[k], "%02x ", data[i]);
|
683 |
|
|
}
|
684 |
|
|
if (k > 0)
|
685 |
|
|
printk("%s\n", tmp);
|
686 |
|
|
}
|
687 |
|
|
|
688 |
|
|
/* Debugging aid */
|
689 |
|
|
void usbvideo_SayAndWait(const char *what)
|
690 |
|
|
{
|
691 |
|
|
wait_queue_head_t wq;
|
692 |
|
|
init_waitqueue_head(&wq);
|
693 |
|
|
info("Say: %s", what);
|
694 |
|
|
interruptible_sleep_on_timeout (&wq, HZ*3); /* Timeout */
|
695 |
|
|
}
|
696 |
|
|
|
697 |
|
|
/* ******************************************************************** */
|
698 |
|
|
|
699 |
|
|
static void usbvideo_ClientIncModCount(struct uvd *uvd)
|
700 |
|
|
{
|
701 |
|
|
if (uvd == NULL) {
|
702 |
|
|
err("%s: uvd == NULL", __FUNCTION__);
|
703 |
|
|
return;
|
704 |
|
|
}
|
705 |
|
|
if (uvd->handle == NULL) {
|
706 |
|
|
err("%s: uvd->handle == NULL", __FUNCTION__);
|
707 |
|
|
return;
|
708 |
|
|
}
|
709 |
|
|
if (uvd->handle->md_module == NULL) {
|
710 |
|
|
err("%s: uvd->handle->md_module == NULL", __FUNCTION__);
|
711 |
|
|
return;
|
712 |
|
|
}
|
713 |
|
|
__MOD_INC_USE_COUNT(uvd->handle->md_module);
|
714 |
|
|
}
|
715 |
|
|
|
716 |
|
|
static void usbvideo_ClientDecModCount(struct uvd *uvd)
|
717 |
|
|
{
|
718 |
|
|
if (uvd == NULL) {
|
719 |
|
|
err("%s: uvd == NULL", __FUNCTION__);
|
720 |
|
|
return;
|
721 |
|
|
}
|
722 |
|
|
if (uvd->handle == NULL) {
|
723 |
|
|
err("%s: uvd->handle == NULL", __FUNCTION__);
|
724 |
|
|
return;
|
725 |
|
|
}
|
726 |
|
|
if (uvd->handle->md_module == NULL) {
|
727 |
|
|
err("%s: uvd->handle->md_module == NULL", __FUNCTION__);
|
728 |
|
|
return;
|
729 |
|
|
}
|
730 |
|
|
__MOD_DEC_USE_COUNT(uvd->handle->md_module);
|
731 |
|
|
}
|
732 |
|
|
|
733 |
|
|
int usbvideo_register(
|
734 |
|
|
struct usbvideo **pCams,
|
735 |
|
|
const int num_cams,
|
736 |
|
|
const int num_extra,
|
737 |
|
|
const char *driverName,
|
738 |
|
|
const struct usbvideo_cb *cbTbl,
|
739 |
|
|
struct module *md,
|
740 |
|
|
const struct usb_device_id *id_table)
|
741 |
|
|
{
|
742 |
|
|
struct usbvideo *cams;
|
743 |
|
|
int i, base_size;
|
744 |
|
|
|
745 |
|
|
/* Check parameters for sanity */
|
746 |
|
|
if ((num_cams <= 0) || (pCams == NULL) || (cbTbl == NULL)) {
|
747 |
|
|
err("%s: Illegal call", __FUNCTION__);
|
748 |
|
|
return -EINVAL;
|
749 |
|
|
}
|
750 |
|
|
|
751 |
|
|
/* Check registration callback - must be set! */
|
752 |
|
|
if (cbTbl->probe == NULL) {
|
753 |
|
|
err("%s: probe() is required!", __FUNCTION__);
|
754 |
|
|
return -EINVAL;
|
755 |
|
|
}
|
756 |
|
|
|
757 |
|
|
base_size = num_cams * sizeof(struct uvd) + sizeof(struct usbvideo);
|
758 |
|
|
cams = (struct usbvideo *) kmalloc(base_size, GFP_KERNEL);
|
759 |
|
|
if (cams == NULL) {
|
760 |
|
|
err("Failed to allocate %d. bytes for usbvideo struct", base_size);
|
761 |
|
|
return -ENOMEM;
|
762 |
|
|
}
|
763 |
|
|
dbg("%s: Allocated $%p (%d. bytes) for %d. cameras",
|
764 |
|
|
__FUNCTION__, cams, base_size, num_cams);
|
765 |
|
|
memset(cams, 0, base_size);
|
766 |
|
|
|
767 |
|
|
/* Copy callbacks, apply defaults for those that are not set */
|
768 |
|
|
memmove(&cams->cb, cbTbl, sizeof(cams->cb));
|
769 |
|
|
if (cams->cb.getFrame == NULL)
|
770 |
|
|
cams->cb.getFrame = usbvideo_GetFrame;
|
771 |
|
|
if (cams->cb.disconnect == NULL)
|
772 |
|
|
cams->cb.disconnect = usbvideo_Disconnect;
|
773 |
|
|
if (cams->cb.startDataPump == NULL)
|
774 |
|
|
cams->cb.startDataPump = usbvideo_StartDataPump;
|
775 |
|
|
if (cams->cb.stopDataPump == NULL)
|
776 |
|
|
cams->cb.stopDataPump = usbvideo_StopDataPump;
|
777 |
|
|
#if USES_PROC_FS
|
778 |
|
|
/*
|
779 |
|
|
* If both /proc fs callbacks are NULL then we assume that the driver
|
780 |
|
|
* does not need procfs services at all. Leave them NULL.
|
781 |
|
|
*/
|
782 |
|
|
cams->uses_procfs = (cams->cb.procfs_read != NULL) || (cams->cb.procfs_write == NULL);
|
783 |
|
|
if (cams->uses_procfs) {
|
784 |
|
|
if (cams->cb.procfs_read == NULL)
|
785 |
|
|
cams->cb.procfs_read = usbvideo_default_procfs_read_proc;
|
786 |
|
|
if (cams->cb.procfs_write == NULL)
|
787 |
|
|
cams->cb.procfs_write = usbvideo_default_procfs_write_proc;
|
788 |
|
|
}
|
789 |
|
|
#else /* !USES_PROC_FS */
|
790 |
|
|
/* Report a warning so that user knows why there is no /proc entries */
|
791 |
|
|
if ((cams->cb.procfs_read != NULL) || (cams->cb.procfs_write == NULL)) {
|
792 |
|
|
dbg("%s: /proc fs support requested but not configured!", __FUNCTION__);
|
793 |
|
|
}
|
794 |
|
|
#endif
|
795 |
|
|
cams->num_cameras = num_cams;
|
796 |
|
|
cams->cam = (struct uvd *) &cams[1];
|
797 |
|
|
cams->md_module = md;
|
798 |
|
|
if (cams->md_module == NULL)
|
799 |
|
|
warn("%s: module == NULL!", __FUNCTION__);
|
800 |
|
|
init_MUTEX(&cams->lock); /* to 1 == available */
|
801 |
|
|
|
802 |
|
|
for (i = 0; i < num_cams; i++) {
|
803 |
|
|
struct uvd *up = &cams->cam[i];
|
804 |
|
|
|
805 |
|
|
up->handle = cams;
|
806 |
|
|
|
807 |
|
|
/* Allocate user_data separately because of kmalloc's limits */
|
808 |
|
|
if (num_extra > 0) {
|
809 |
|
|
up->user_size = num_cams * num_extra;
|
810 |
|
|
up->user_data = (char *) kmalloc(up->user_size, GFP_KERNEL);
|
811 |
|
|
if (up->user_data == NULL) {
|
812 |
|
|
up->user_size = 0;
|
813 |
|
|
err("%s: Failed to allocate user_data (%d. bytes)",
|
814 |
|
|
__FUNCTION__, up->user_size);
|
815 |
|
|
return -ENOMEM;
|
816 |
|
|
}
|
817 |
|
|
dbg("%s: Allocated cams[%d].user_data=$%p (%d. bytes)",
|
818 |
|
|
__FUNCTION__, i, up->user_data, up->user_size);
|
819 |
|
|
}
|
820 |
|
|
}
|
821 |
|
|
|
822 |
|
|
/*
|
823 |
|
|
* Register ourselves with USB stack.
|
824 |
|
|
*/
|
825 |
|
|
strcpy(cams->drvName, (driverName != NULL) ? driverName : "Unknown");
|
826 |
|
|
cams->usbdrv.name = cams->drvName;
|
827 |
|
|
cams->usbdrv.probe = cams->cb.probe;
|
828 |
|
|
cams->usbdrv.disconnect = cams->cb.disconnect;
|
829 |
|
|
cams->usbdrv.id_table = id_table;
|
830 |
|
|
|
831 |
|
|
#if USES_PROC_FS
|
832 |
|
|
if (cams->uses_procfs) {
|
833 |
|
|
dbg("%s: Creating /proc filesystem entries.", __FUNCTION__);
|
834 |
|
|
usbvideo_procfs_level1_create(cams);
|
835 |
|
|
}
|
836 |
|
|
#endif
|
837 |
|
|
|
838 |
|
|
/*
|
839 |
|
|
* Update global handle to usbvideo. This is very important
|
840 |
|
|
* because probe() can be called before usb_register() returns.
|
841 |
|
|
* If the handle is not yet updated then the probe() will fail.
|
842 |
|
|
*/
|
843 |
|
|
*pCams = cams;
|
844 |
|
|
usb_register(&cams->usbdrv);
|
845 |
|
|
|
846 |
|
|
return 0;
|
847 |
|
|
}
|
848 |
|
|
|
849 |
|
|
/*
|
850 |
|
|
* usbvideo_Deregister()
|
851 |
|
|
*
|
852 |
|
|
* Procedure frees all usbvideo and user data structures. Be warned that
|
853 |
|
|
* if you had some dynamically allocated components in ->user field then
|
854 |
|
|
* you should free them before calling here.
|
855 |
|
|
*/
|
856 |
|
|
void usbvideo_Deregister(struct usbvideo **pCams)
|
857 |
|
|
{
|
858 |
|
|
struct usbvideo *cams;
|
859 |
|
|
int i;
|
860 |
|
|
|
861 |
|
|
if (pCams == NULL) {
|
862 |
|
|
err("%s: pCams == NULL", __FUNCTION__);
|
863 |
|
|
return;
|
864 |
|
|
}
|
865 |
|
|
cams = *pCams;
|
866 |
|
|
if (cams == NULL) {
|
867 |
|
|
err("%s: cams == NULL", __FUNCTION__);
|
868 |
|
|
return;
|
869 |
|
|
}
|
870 |
|
|
|
871 |
|
|
#if USES_PROC_FS
|
872 |
|
|
if (cams->uses_procfs) {
|
873 |
|
|
dbg("%s: Deregistering filesystem entries.", __FUNCTION__);
|
874 |
|
|
usbvideo_procfs_level1_destroy(cams);
|
875 |
|
|
}
|
876 |
|
|
#endif
|
877 |
|
|
|
878 |
|
|
dbg("%s: Deregistering %s driver.", __FUNCTION__, cams->drvName);
|
879 |
|
|
usb_deregister(&cams->usbdrv);
|
880 |
|
|
|
881 |
|
|
dbg("%s: Deallocating cams=$%p (%d. cameras)", __FUNCTION__, cams, cams->num_cameras);
|
882 |
|
|
for (i=0; i < cams->num_cameras; i++) {
|
883 |
|
|
struct uvd *up = &cams->cam[i];
|
884 |
|
|
int warning = 0;
|
885 |
|
|
|
886 |
|
|
if (up->user_data != NULL) {
|
887 |
|
|
if (up->user_size <= 0)
|
888 |
|
|
++warning;
|
889 |
|
|
} else {
|
890 |
|
|
if (up->user_size > 0)
|
891 |
|
|
++warning;
|
892 |
|
|
}
|
893 |
|
|
if (warning) {
|
894 |
|
|
err("%s: Warning: user_data=$%p user_size=%d.",
|
895 |
|
|
__FUNCTION__, up->user_data, up->user_size);
|
896 |
|
|
} else {
|
897 |
|
|
dbg("%s: Freeing %d. $%p->user_data=$%p",
|
898 |
|
|
__FUNCTION__, i, up, up->user_data);
|
899 |
|
|
kfree(up->user_data);
|
900 |
|
|
}
|
901 |
|
|
}
|
902 |
|
|
/* Whole array was allocated in one chunk */
|
903 |
|
|
dbg("%s: Freed %d uvd structures",
|
904 |
|
|
__FUNCTION__, cams->num_cameras);
|
905 |
|
|
kfree(cams);
|
906 |
|
|
*pCams = NULL;
|
907 |
|
|
}
|
908 |
|
|
|
909 |
|
|
/*
|
910 |
|
|
* usbvideo_Disconnect()
|
911 |
|
|
*
|
912 |
|
|
* This procedure stops all driver activity. Deallocation of
|
913 |
|
|
* the interface-private structure (pointed by 'ptr') is done now
|
914 |
|
|
* (if we don't have any open files) or later, when those files
|
915 |
|
|
* are closed. After that driver should be removable.
|
916 |
|
|
*
|
917 |
|
|
* This code handles surprise removal. The uvd->user is a counter which
|
918 |
|
|
* increments on open() and decrements on close(). If we see here that
|
919 |
|
|
* this counter is not 0 then we have a client who still has us opened.
|
920 |
|
|
* We set uvd->remove_pending flag as early as possible, and after that
|
921 |
|
|
* all access to the camera will gracefully fail. These failures should
|
922 |
|
|
* prompt client to (eventually) close the video device, and then - in
|
923 |
|
|
* usbvideo_v4l_close() - we decrement uvd->uvd_used and usage counter.
|
924 |
|
|
*
|
925 |
|
|
* History:
|
926 |
|
|
* 22-Jan-2000 Added polling of MOD_IN_USE to delay removal until all users gone.
|
927 |
|
|
* 27-Jan-2000 Reworked to allow pending disconnects; see xxx_close()
|
928 |
|
|
* 24-May-2000 Corrected to prevent race condition (MOD_xxx_USE_COUNT).
|
929 |
|
|
* 19-Oct-2000 Moved to usbvideo module.
|
930 |
|
|
*/
|
931 |
|
|
void usbvideo_Disconnect(struct usb_device *dev, void *ptr)
|
932 |
|
|
{
|
933 |
|
|
struct uvd *uvd = (struct uvd *) ptr;
|
934 |
|
|
int i;
|
935 |
|
|
|
936 |
|
|
if ((dev == NULL) || (uvd == NULL)) {
|
937 |
|
|
err("%s($%p,$%p): Illegal call.", __FUNCTION__, dev, ptr);
|
938 |
|
|
return;
|
939 |
|
|
}
|
940 |
|
|
usbvideo_ClientIncModCount(uvd);
|
941 |
|
|
if (uvd->debug > 0)
|
942 |
|
|
info("%s(%p,%p.)", __FUNCTION__, dev, ptr);
|
943 |
|
|
|
944 |
|
|
down(&uvd->lock);
|
945 |
|
|
uvd->remove_pending = 1; /* Now all ISO data will be ignored */
|
946 |
|
|
|
947 |
|
|
/* At this time we ask to cancel outstanding URBs */
|
948 |
|
|
GET_CALLBACK(uvd, stopDataPump)(uvd);
|
949 |
|
|
|
950 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++)
|
951 |
|
|
usb_free_urb(uvd->sbuf[i].urb);
|
952 |
|
|
|
953 |
|
|
usb_dec_dev_use(uvd->dev);
|
954 |
|
|
uvd->dev = NULL; /* USB device is no more */
|
955 |
|
|
|
956 |
|
|
if (uvd->user)
|
957 |
|
|
info("%s: In use, disconnect pending.", __FUNCTION__);
|
958 |
|
|
else
|
959 |
|
|
usbvideo_CameraRelease(uvd);
|
960 |
|
|
up(&uvd->lock);
|
961 |
|
|
info("USB camera disconnected.");
|
962 |
|
|
|
963 |
|
|
usbvideo_ClientDecModCount(uvd);
|
964 |
|
|
}
|
965 |
|
|
|
966 |
|
|
/*
|
967 |
|
|
* usbvideo_CameraRelease()
|
968 |
|
|
*
|
969 |
|
|
* This code does final release of struct uvd. This happens
|
970 |
|
|
* after the device is disconnected -and- all clients
|
971 |
|
|
* closed their files.
|
972 |
|
|
*
|
973 |
|
|
* History:
|
974 |
|
|
* 27-Jan-2000 Created.
|
975 |
|
|
*/
|
976 |
|
|
void usbvideo_CameraRelease(struct uvd *uvd)
|
977 |
|
|
{
|
978 |
|
|
if (uvd == NULL) {
|
979 |
|
|
err("%s: Illegal call", __FUNCTION__);
|
980 |
|
|
return;
|
981 |
|
|
}
|
982 |
|
|
video_unregister_device(&uvd->vdev);
|
983 |
|
|
if (uvd->debug > 0)
|
984 |
|
|
info("%s: Video unregistered.", __FUNCTION__);
|
985 |
|
|
|
986 |
|
|
#if USES_PROC_FS
|
987 |
|
|
assert(uvd->handle != NULL);
|
988 |
|
|
if (uvd->handle->uses_procfs) {
|
989 |
|
|
dbg("%s: Removing /proc/%s/ filesystem entries.", __FUNCTION__, uvd->handle->drvName);
|
990 |
|
|
usbvideo_procfs_level2_destroy(uvd);
|
991 |
|
|
}
|
992 |
|
|
#endif
|
993 |
|
|
|
994 |
|
|
RingQueue_Free(&uvd->dp);
|
995 |
|
|
if (VALID_CALLBACK(uvd, userFree))
|
996 |
|
|
GET_CALLBACK(uvd, userFree)(uvd);
|
997 |
|
|
uvd->uvd_used = 0; /* This is atomic, no need to take mutex */
|
998 |
|
|
}
|
999 |
|
|
|
1000 |
|
|
/*
|
1001 |
|
|
* usbvideo_find_struct()
|
1002 |
|
|
*
|
1003 |
|
|
* This code searches the array of preallocated (static) structures
|
1004 |
|
|
* and returns index of the first one that isn't in use. Returns -1
|
1005 |
|
|
* if there are no free structures.
|
1006 |
|
|
*
|
1007 |
|
|
* History:
|
1008 |
|
|
* 27-Jan-2000 Created.
|
1009 |
|
|
*/
|
1010 |
|
|
static int usbvideo_find_struct(struct usbvideo *cams)
|
1011 |
|
|
{
|
1012 |
|
|
int u, rv = -1;
|
1013 |
|
|
|
1014 |
|
|
if (cams == NULL) {
|
1015 |
|
|
err("No usbvideo handle?");
|
1016 |
|
|
return -1;
|
1017 |
|
|
}
|
1018 |
|
|
down(&cams->lock);
|
1019 |
|
|
for (u = 0; u < cams->num_cameras; u++) {
|
1020 |
|
|
struct uvd *uvd = &cams->cam[u];
|
1021 |
|
|
if (!uvd->uvd_used) /* This one is free */
|
1022 |
|
|
{
|
1023 |
|
|
uvd->uvd_used = 1; /* In use now */
|
1024 |
|
|
init_MUTEX(&uvd->lock); /* to 1 == available */
|
1025 |
|
|
uvd->dev = NULL;
|
1026 |
|
|
rv = u;
|
1027 |
|
|
break;
|
1028 |
|
|
}
|
1029 |
|
|
}
|
1030 |
|
|
up(&cams->lock);
|
1031 |
|
|
return rv;
|
1032 |
|
|
}
|
1033 |
|
|
|
1034 |
|
|
struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams)
|
1035 |
|
|
{
|
1036 |
|
|
int i, devnum;
|
1037 |
|
|
struct uvd *uvd = NULL;
|
1038 |
|
|
|
1039 |
|
|
if (cams == NULL) {
|
1040 |
|
|
err("No usbvideo handle?");
|
1041 |
|
|
return NULL;
|
1042 |
|
|
}
|
1043 |
|
|
|
1044 |
|
|
devnum = usbvideo_find_struct(cams);
|
1045 |
|
|
if (devnum == -1) {
|
1046 |
|
|
err("IBM USB camera driver: Too many devices!");
|
1047 |
|
|
return NULL;
|
1048 |
|
|
}
|
1049 |
|
|
uvd = &cams->cam[devnum];
|
1050 |
|
|
dbg("Device entry #%d. at $%p", devnum, uvd);
|
1051 |
|
|
|
1052 |
|
|
/* Not relying upon caller we increase module counter ourselves */
|
1053 |
|
|
usbvideo_ClientIncModCount(uvd);
|
1054 |
|
|
|
1055 |
|
|
down(&uvd->lock);
|
1056 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1057 |
|
|
uvd->sbuf[i].urb = usb_alloc_urb(FRAMES_PER_DESC);
|
1058 |
|
|
if (uvd->sbuf[i].urb == NULL) {
|
1059 |
|
|
err("usb_alloc_urb(%d.) failed.", FRAMES_PER_DESC);
|
1060 |
|
|
uvd->uvd_used = 0;
|
1061 |
|
|
uvd = NULL;
|
1062 |
|
|
goto allocate_done;
|
1063 |
|
|
}
|
1064 |
|
|
}
|
1065 |
|
|
uvd->user=0;
|
1066 |
|
|
uvd->remove_pending = 0;
|
1067 |
|
|
uvd->last_error = 0;
|
1068 |
|
|
RingQueue_Initialize(&uvd->dp);
|
1069 |
|
|
|
1070 |
|
|
/* Initialize video device structure */
|
1071 |
|
|
memset(&uvd->vdev, 0, sizeof(uvd->vdev));
|
1072 |
|
|
i = sprintf(uvd->vdev.name, "%s USB Camera", cams->drvName);
|
1073 |
|
|
if (i >= sizeof(uvd->vdev.name)) {
|
1074 |
|
|
err("Wrote too much into uvd->vdev.name, expect trouble!");
|
1075 |
|
|
}
|
1076 |
|
|
uvd->vdev.type = VID_TYPE_CAPTURE;
|
1077 |
|
|
uvd->vdev.hardware = VID_HARDWARE_CPIA;
|
1078 |
|
|
uvd->vdev.open = usbvideo_v4l_open;
|
1079 |
|
|
uvd->vdev.close = usbvideo_v4l_close;
|
1080 |
|
|
uvd->vdev.read = usbvideo_v4l_read;
|
1081 |
|
|
uvd->vdev.write = usbvideo_v4l_write;
|
1082 |
|
|
uvd->vdev.ioctl = usbvideo_v4l_ioctl;
|
1083 |
|
|
uvd->vdev.mmap = usbvideo_v4l_mmap;
|
1084 |
|
|
uvd->vdev.initialize = usbvideo_v4l_initialize;
|
1085 |
|
|
/*
|
1086 |
|
|
* The client is free to overwrite those because we
|
1087 |
|
|
* return control to the client's probe function right now.
|
1088 |
|
|
*/
|
1089 |
|
|
allocate_done:
|
1090 |
|
|
up (&uvd->lock);
|
1091 |
|
|
usbvideo_ClientDecModCount(uvd);
|
1092 |
|
|
return uvd;
|
1093 |
|
|
}
|
1094 |
|
|
|
1095 |
|
|
int usbvideo_RegisterVideoDevice(struct uvd *uvd)
|
1096 |
|
|
{
|
1097 |
|
|
char tmp1[20], tmp2[20]; /* Buffers for printing */
|
1098 |
|
|
|
1099 |
|
|
if (uvd == NULL) {
|
1100 |
|
|
err("%s: Illegal call.", __FUNCTION__);
|
1101 |
|
|
return -EINVAL;
|
1102 |
|
|
}
|
1103 |
|
|
if (uvd->video_endp == 0) {
|
1104 |
|
|
info("%s: No video endpoint specified; data pump disabled.", __FUNCTION__);
|
1105 |
|
|
}
|
1106 |
|
|
if (uvd->paletteBits == 0) {
|
1107 |
|
|
err("%s: No palettes specified!", __FUNCTION__);
|
1108 |
|
|
return -EINVAL;
|
1109 |
|
|
}
|
1110 |
|
|
if (uvd->defaultPalette == 0) {
|
1111 |
|
|
info("%s: No default palette!", __FUNCTION__);
|
1112 |
|
|
}
|
1113 |
|
|
|
1114 |
|
|
uvd->max_frame_size = VIDEOSIZE_X(uvd->canvas) *
|
1115 |
|
|
VIDEOSIZE_Y(uvd->canvas) * V4L_BYTES_PER_PIXEL;
|
1116 |
|
|
usbvideo_VideosizeToString(tmp1, sizeof(tmp1), uvd->videosize);
|
1117 |
|
|
usbvideo_VideosizeToString(tmp2, sizeof(tmp2), uvd->canvas);
|
1118 |
|
|
|
1119 |
|
|
if (uvd->debug > 0) {
|
1120 |
|
|
info("%s: iface=%d. endpoint=$%02x paletteBits=$%08lx",
|
1121 |
|
|
__FUNCTION__, uvd->iface, uvd->video_endp, uvd->paletteBits);
|
1122 |
|
|
}
|
1123 |
|
|
if (video_register_device(&uvd->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
|
1124 |
|
|
err("%s: video_register_device failed", __FUNCTION__);
|
1125 |
|
|
return -EPIPE;
|
1126 |
|
|
}
|
1127 |
|
|
if (uvd->debug > 1) {
|
1128 |
|
|
info("%s: video_register_device() successful", __FUNCTION__);
|
1129 |
|
|
}
|
1130 |
|
|
if (uvd->dev == NULL) {
|
1131 |
|
|
err("%s: uvd->dev == NULL", __FUNCTION__);
|
1132 |
|
|
return -EINVAL;
|
1133 |
|
|
}
|
1134 |
|
|
|
1135 |
|
|
info("%s on /dev/video%d: canvas=%s videosize=%s",
|
1136 |
|
|
(uvd->handle != NULL) ? uvd->handle->drvName : "???",
|
1137 |
|
|
uvd->vdev.minor, tmp2, tmp1);
|
1138 |
|
|
|
1139 |
|
|
#if USES_PROC_FS
|
1140 |
|
|
assert(uvd->handle != NULL);
|
1141 |
|
|
if (uvd->handle->uses_procfs) {
|
1142 |
|
|
if (uvd->debug > 0) {
|
1143 |
|
|
info("%s: Creating /proc/video/%s/ filesystem entries.",
|
1144 |
|
|
__FUNCTION__, uvd->handle->drvName);
|
1145 |
|
|
}
|
1146 |
|
|
usbvideo_procfs_level2_create(uvd);
|
1147 |
|
|
}
|
1148 |
|
|
#endif
|
1149 |
|
|
|
1150 |
|
|
usb_inc_dev_use(uvd->dev);
|
1151 |
|
|
return 0;
|
1152 |
|
|
}
|
1153 |
|
|
|
1154 |
|
|
/* ******************************************************************** */
|
1155 |
|
|
|
1156 |
|
|
int usbvideo_v4l_initialize(struct video_device *dev)
|
1157 |
|
|
{
|
1158 |
|
|
return 0;
|
1159 |
|
|
}
|
1160 |
|
|
|
1161 |
|
|
long usbvideo_v4l_write(struct video_device *dev, const char *buf,
|
1162 |
|
|
unsigned long count, int noblock)
|
1163 |
|
|
{
|
1164 |
|
|
return -EINVAL;
|
1165 |
|
|
}
|
1166 |
|
|
|
1167 |
|
|
int usbvideo_v4l_mmap(struct video_device *dev, const char *adr, unsigned long size)
|
1168 |
|
|
{
|
1169 |
|
|
struct uvd *uvd = (struct uvd *) dev;
|
1170 |
|
|
unsigned long start = (unsigned long) adr;
|
1171 |
|
|
unsigned long page, pos;
|
1172 |
|
|
|
1173 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd))
|
1174 |
|
|
return -EFAULT;
|
1175 |
|
|
|
1176 |
|
|
if (size > (((USBVIDEO_NUMFRAMES * uvd->max_frame_size) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)))
|
1177 |
|
|
return -EINVAL;
|
1178 |
|
|
|
1179 |
|
|
pos = (unsigned long) uvd->fbuf;
|
1180 |
|
|
while (size > 0) {
|
1181 |
|
|
page = usbvideo_kvirt_to_pa(pos);
|
1182 |
|
|
if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED))
|
1183 |
|
|
return -EAGAIN;
|
1184 |
|
|
|
1185 |
|
|
start += PAGE_SIZE;
|
1186 |
|
|
pos += PAGE_SIZE;
|
1187 |
|
|
if (size > PAGE_SIZE)
|
1188 |
|
|
size -= PAGE_SIZE;
|
1189 |
|
|
else
|
1190 |
|
|
size = 0;
|
1191 |
|
|
}
|
1192 |
|
|
|
1193 |
|
|
return 0;
|
1194 |
|
|
}
|
1195 |
|
|
|
1196 |
|
|
/*
|
1197 |
|
|
* usbvideo_v4l_open()
|
1198 |
|
|
*
|
1199 |
|
|
* This is part of Video 4 Linux API. The driver can be opened by one
|
1200 |
|
|
* client only (checks internal counter 'uvdser'). The procedure
|
1201 |
|
|
* then allocates buffers needed for video processing.
|
1202 |
|
|
*
|
1203 |
|
|
* History:
|
1204 |
|
|
* 22-Jan-2000 Rewrote, moved scratch buffer allocation here. Now the
|
1205 |
|
|
* camera is also initialized here (once per connect), at
|
1206 |
|
|
* expense of V4L client (it waits on open() call).
|
1207 |
|
|
* 27-Jan-2000 Used USBVIDEO_NUMSBUF as number of URB buffers.
|
1208 |
|
|
* 24-May-2000 Corrected to prevent race condition (MOD_xxx_USE_COUNT).
|
1209 |
|
|
*/
|
1210 |
|
|
int usbvideo_v4l_open(struct video_device *dev, int flags)
|
1211 |
|
|
{
|
1212 |
|
|
struct uvd *uvd = (struct uvd *) dev;
|
1213 |
|
|
const int sb_size = FRAMES_PER_DESC * uvd->iso_packet_len;
|
1214 |
|
|
int i, errCode = 0;
|
1215 |
|
|
|
1216 |
|
|
if (uvd->debug > 1)
|
1217 |
|
|
info("%s($%p,$%08x", __FUNCTION__, dev, flags);
|
1218 |
|
|
|
1219 |
|
|
usbvideo_ClientIncModCount(uvd);
|
1220 |
|
|
down(&uvd->lock);
|
1221 |
|
|
|
1222 |
|
|
if (uvd->user) {
|
1223 |
|
|
err("%s: Someone tried to open an already opened device!", __FUNCTION__);
|
1224 |
|
|
errCode = -EBUSY;
|
1225 |
|
|
} else {
|
1226 |
|
|
/* Clear statistics */
|
1227 |
|
|
memset(&uvd->stats, 0, sizeof(uvd->stats));
|
1228 |
|
|
|
1229 |
|
|
/* Clean pointers so we know if we allocated something */
|
1230 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++)
|
1231 |
|
|
uvd->sbuf[i].data = NULL;
|
1232 |
|
|
|
1233 |
|
|
/* Allocate memory for the frame buffers */
|
1234 |
|
|
uvd->fbuf_size = USBVIDEO_NUMFRAMES * uvd->max_frame_size;
|
1235 |
|
|
uvd->fbuf = usbvideo_rvmalloc(uvd->fbuf_size);
|
1236 |
|
|
RingQueue_Allocate(&uvd->dp, RING_QUEUE_SIZE);
|
1237 |
|
|
if ((uvd->fbuf == NULL) ||
|
1238 |
|
|
(!RingQueue_IsAllocated(&uvd->dp))) {
|
1239 |
|
|
err("%s: Failed to allocate fbuf or dp", __FUNCTION__);
|
1240 |
|
|
errCode = -ENOMEM;
|
1241 |
|
|
} else {
|
1242 |
|
|
/* Allocate all buffers */
|
1243 |
|
|
for (i=0; i < USBVIDEO_NUMFRAMES; i++) {
|
1244 |
|
|
uvd->frame[i].frameState = FrameState_Unused;
|
1245 |
|
|
uvd->frame[i].data = uvd->fbuf + i*(uvd->max_frame_size);
|
1246 |
|
|
/*
|
1247 |
|
|
* Set default sizes in case IOCTL (VIDIOCMCAPTURE)
|
1248 |
|
|
* is not used (using read() instead).
|
1249 |
|
|
*/
|
1250 |
|
|
uvd->frame[i].canvas = uvd->canvas;
|
1251 |
|
|
uvd->frame[i].seqRead_Index = 0;
|
1252 |
|
|
}
|
1253 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1254 |
|
|
uvd->sbuf[i].data = kmalloc(sb_size, GFP_KERNEL);
|
1255 |
|
|
if (uvd->sbuf[i].data == NULL) {
|
1256 |
|
|
errCode = -ENOMEM;
|
1257 |
|
|
break;
|
1258 |
|
|
}
|
1259 |
|
|
}
|
1260 |
|
|
}
|
1261 |
|
|
if (errCode != 0) {
|
1262 |
|
|
/* Have to free all that memory */
|
1263 |
|
|
if (uvd->fbuf != NULL) {
|
1264 |
|
|
usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size);
|
1265 |
|
|
uvd->fbuf = NULL;
|
1266 |
|
|
}
|
1267 |
|
|
RingQueue_Free(&uvd->dp);
|
1268 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1269 |
|
|
if (uvd->sbuf[i].data != NULL) {
|
1270 |
|
|
kfree (uvd->sbuf[i].data);
|
1271 |
|
|
uvd->sbuf[i].data = NULL;
|
1272 |
|
|
}
|
1273 |
|
|
}
|
1274 |
|
|
}
|
1275 |
|
|
}
|
1276 |
|
|
|
1277 |
|
|
/* If so far no errors then we shall start the camera */
|
1278 |
|
|
if (errCode == 0) {
|
1279 |
|
|
/* Start data pump if we have valid endpoint */
|
1280 |
|
|
if (uvd->video_endp != 0)
|
1281 |
|
|
errCode = GET_CALLBACK(uvd, startDataPump)(uvd);
|
1282 |
|
|
if (errCode == 0) {
|
1283 |
|
|
if (VALID_CALLBACK(uvd, setupOnOpen)) {
|
1284 |
|
|
if (uvd->debug > 1)
|
1285 |
|
|
info("%s: setupOnOpen callback", __FUNCTION__);
|
1286 |
|
|
errCode = GET_CALLBACK(uvd, setupOnOpen)(uvd);
|
1287 |
|
|
if (errCode < 0) {
|
1288 |
|
|
err("%s: setupOnOpen callback failed (%d.).",
|
1289 |
|
|
__FUNCTION__, errCode);
|
1290 |
|
|
} else if (uvd->debug > 1) {
|
1291 |
|
|
info("%s: setupOnOpen callback successful", __FUNCTION__);
|
1292 |
|
|
}
|
1293 |
|
|
}
|
1294 |
|
|
if (errCode == 0) {
|
1295 |
|
|
uvd->settingsAdjusted = 0;
|
1296 |
|
|
if (uvd->debug > 1)
|
1297 |
|
|
info("%s: Open succeeded.", __FUNCTION__);
|
1298 |
|
|
uvd->user++;
|
1299 |
|
|
}
|
1300 |
|
|
}
|
1301 |
|
|
}
|
1302 |
|
|
up(&uvd->lock);
|
1303 |
|
|
if (errCode != 0)
|
1304 |
|
|
usbvideo_ClientDecModCount(uvd);
|
1305 |
|
|
if (uvd->debug > 0)
|
1306 |
|
|
info("%s: Returning %d.", __FUNCTION__, errCode);
|
1307 |
|
|
return errCode;
|
1308 |
|
|
}
|
1309 |
|
|
|
1310 |
|
|
/*
|
1311 |
|
|
* usbvideo_v4l_close()
|
1312 |
|
|
*
|
1313 |
|
|
* This is part of Video 4 Linux API. The procedure
|
1314 |
|
|
* stops streaming and deallocates all buffers that were earlier
|
1315 |
|
|
* allocated in usbvideo_v4l_open().
|
1316 |
|
|
*
|
1317 |
|
|
* History:
|
1318 |
|
|
* 22-Jan-2000 Moved scratch buffer deallocation here.
|
1319 |
|
|
* 27-Jan-2000 Used USBVIDEO_NUMSBUF as number of URB buffers.
|
1320 |
|
|
* 24-May-2000 Moved MOD_DEC_USE_COUNT outside of code that can sleep.
|
1321 |
|
|
*/
|
1322 |
|
|
void usbvideo_v4l_close(struct video_device *dev)
|
1323 |
|
|
{
|
1324 |
|
|
struct uvd *uvd = (struct uvd *)dev;
|
1325 |
|
|
int i;
|
1326 |
|
|
|
1327 |
|
|
if (uvd->debug > 1)
|
1328 |
|
|
info("%s($%p)", __FUNCTION__, dev);
|
1329 |
|
|
|
1330 |
|
|
down(&uvd->lock);
|
1331 |
|
|
GET_CALLBACK(uvd, stopDataPump)(uvd);
|
1332 |
|
|
usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size);
|
1333 |
|
|
uvd->fbuf = NULL;
|
1334 |
|
|
RingQueue_Free(&uvd->dp);
|
1335 |
|
|
|
1336 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1337 |
|
|
kfree(uvd->sbuf[i].data);
|
1338 |
|
|
uvd->sbuf[i].data = NULL;
|
1339 |
|
|
}
|
1340 |
|
|
|
1341 |
|
|
#if USBVIDEO_REPORT_STATS
|
1342 |
|
|
usbvideo_ReportStatistics(uvd);
|
1343 |
|
|
#endif
|
1344 |
|
|
|
1345 |
|
|
uvd->user--;
|
1346 |
|
|
if (uvd->remove_pending) {
|
1347 |
|
|
if (uvd->debug > 0)
|
1348 |
|
|
info("usbvideo_v4l_close: Final disconnect.");
|
1349 |
|
|
usbvideo_CameraRelease(uvd);
|
1350 |
|
|
}
|
1351 |
|
|
up(&uvd->lock);
|
1352 |
|
|
usbvideo_ClientDecModCount(uvd);
|
1353 |
|
|
|
1354 |
|
|
if (uvd->debug > 1)
|
1355 |
|
|
info("%s: Completed.", __FUNCTION__);
|
1356 |
|
|
}
|
1357 |
|
|
|
1358 |
|
|
/*
|
1359 |
|
|
* usbvideo_v4l_ioctl()
|
1360 |
|
|
*
|
1361 |
|
|
* This is part of Video 4 Linux API. The procedure handles ioctl() calls.
|
1362 |
|
|
*
|
1363 |
|
|
* History:
|
1364 |
|
|
* 22-Jan-2000 Corrected VIDIOCSPICT to reject unsupported settings.
|
1365 |
|
|
*/
|
1366 |
|
|
int usbvideo_v4l_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
|
1367 |
|
|
{
|
1368 |
|
|
struct uvd *uvd = (struct uvd *)dev;
|
1369 |
|
|
|
1370 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd))
|
1371 |
|
|
return -EFAULT;
|
1372 |
|
|
|
1373 |
|
|
switch (cmd) {
|
1374 |
|
|
case VIDIOCGCAP:
|
1375 |
|
|
{
|
1376 |
|
|
if (copy_to_user(arg, &uvd->vcap, sizeof(uvd->vcap)))
|
1377 |
|
|
return -EFAULT;
|
1378 |
|
|
return 0;
|
1379 |
|
|
}
|
1380 |
|
|
case VIDIOCGCHAN:
|
1381 |
|
|
{
|
1382 |
|
|
if (copy_to_user(arg, &uvd->vchan, sizeof(uvd->vchan)))
|
1383 |
|
|
return -EFAULT;
|
1384 |
|
|
return 0;
|
1385 |
|
|
}
|
1386 |
|
|
case VIDIOCSCHAN:
|
1387 |
|
|
{ /* Not used but we return success */
|
1388 |
|
|
int v;
|
1389 |
|
|
if (copy_from_user(&v, arg, sizeof(v)))
|
1390 |
|
|
return -EFAULT;
|
1391 |
|
|
return 0;
|
1392 |
|
|
}
|
1393 |
|
|
case VIDIOCGPICT:
|
1394 |
|
|
{
|
1395 |
|
|
if (copy_to_user(arg, &uvd->vpic, sizeof(uvd->vpic)))
|
1396 |
|
|
return -EFAULT;
|
1397 |
|
|
return 0;
|
1398 |
|
|
}
|
1399 |
|
|
case VIDIOCSPICT:
|
1400 |
|
|
{
|
1401 |
|
|
struct video_picture tmp;
|
1402 |
|
|
/*
|
1403 |
|
|
* Use temporary 'video_picture' structure to preserve our
|
1404 |
|
|
* own settings (such as color depth, palette) that we
|
1405 |
|
|
* aren't allowing everyone (V4L client) to change.
|
1406 |
|
|
*/
|
1407 |
|
|
if (copy_from_user(&tmp, arg, sizeof(tmp)))
|
1408 |
|
|
return -EFAULT;
|
1409 |
|
|
uvd->vpic.brightness = tmp.brightness;
|
1410 |
|
|
uvd->vpic.hue = tmp.hue;
|
1411 |
|
|
uvd->vpic.colour = tmp.colour;
|
1412 |
|
|
uvd->vpic.contrast = tmp.contrast;
|
1413 |
|
|
uvd->settingsAdjusted = 0; /* Will force new settings */
|
1414 |
|
|
return 0;
|
1415 |
|
|
}
|
1416 |
|
|
case VIDIOCSWIN:
|
1417 |
|
|
{
|
1418 |
|
|
struct video_window vw;
|
1419 |
|
|
|
1420 |
|
|
if (copy_from_user(&vw, arg, sizeof(vw)))
|
1421 |
|
|
return -EFAULT;
|
1422 |
|
|
if (VALID_CALLBACK(uvd, setVideoMode)) {
|
1423 |
|
|
return GET_CALLBACK(uvd, setVideoMode)(uvd, &vw);
|
1424 |
|
|
}
|
1425 |
|
|
if (vw.flags)
|
1426 |
|
|
return -EINVAL;
|
1427 |
|
|
if (vw.clipcount)
|
1428 |
|
|
return -EINVAL;
|
1429 |
|
|
if (vw.width != VIDEOSIZE_X(uvd->canvas))
|
1430 |
|
|
return -EINVAL;
|
1431 |
|
|
if (vw.height != VIDEOSIZE_Y(uvd->canvas))
|
1432 |
|
|
return -EINVAL;
|
1433 |
|
|
|
1434 |
|
|
return 0;
|
1435 |
|
|
}
|
1436 |
|
|
case VIDIOCGWIN:
|
1437 |
|
|
{
|
1438 |
|
|
struct video_window vw;
|
1439 |
|
|
|
1440 |
|
|
vw.x = 0;
|
1441 |
|
|
vw.y = 0;
|
1442 |
|
|
vw.width = VIDEOSIZE_X(uvd->videosize);
|
1443 |
|
|
vw.height = VIDEOSIZE_Y(uvd->videosize);
|
1444 |
|
|
vw.chromakey = 0;
|
1445 |
|
|
if (VALID_CALLBACK(uvd, getFPS))
|
1446 |
|
|
vw.flags = GET_CALLBACK(uvd, getFPS)(uvd);
|
1447 |
|
|
else
|
1448 |
|
|
vw.flags = 10; /* FIXME: do better! */
|
1449 |
|
|
|
1450 |
|
|
if (copy_to_user(arg, &vw, sizeof(vw)))
|
1451 |
|
|
return -EFAULT;
|
1452 |
|
|
|
1453 |
|
|
return 0;
|
1454 |
|
|
}
|
1455 |
|
|
case VIDIOCGMBUF:
|
1456 |
|
|
{
|
1457 |
|
|
struct video_mbuf vm;
|
1458 |
|
|
int i;
|
1459 |
|
|
|
1460 |
|
|
memset(&vm, 0, sizeof(vm));
|
1461 |
|
|
vm.size = uvd->max_frame_size * USBVIDEO_NUMFRAMES;
|
1462 |
|
|
vm.frames = USBVIDEO_NUMFRAMES;
|
1463 |
|
|
for(i = 0; i < USBVIDEO_NUMFRAMES; i++)
|
1464 |
|
|
vm.offsets[i] = i * uvd->max_frame_size;
|
1465 |
|
|
|
1466 |
|
|
if (copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
|
1467 |
|
|
return -EFAULT;
|
1468 |
|
|
|
1469 |
|
|
return 0;
|
1470 |
|
|
}
|
1471 |
|
|
case VIDIOCMCAPTURE:
|
1472 |
|
|
{
|
1473 |
|
|
struct video_mmap vm;
|
1474 |
|
|
|
1475 |
|
|
if (copy_from_user((void *)&vm, (void *)arg, sizeof(vm))) {
|
1476 |
|
|
err("VIDIOCMCAPTURE: copy_from_user() failed.");
|
1477 |
|
|
return -EFAULT;
|
1478 |
|
|
}
|
1479 |
|
|
if (uvd->debug >= 1) {
|
1480 |
|
|
info("VIDIOCMCAPTURE: frame=%d. size=%dx%d, format=%d.",
|
1481 |
|
|
vm.frame, vm.width, vm.height, vm.format);
|
1482 |
|
|
}
|
1483 |
|
|
/*
|
1484 |
|
|
* Check if the requested size is supported. If the requestor
|
1485 |
|
|
* requests too big a frame then we may be tricked into accessing
|
1486 |
|
|
* outside of own preallocated frame buffer (in uvd->frame).
|
1487 |
|
|
* This will cause oops or a security hole. Theoretically, we
|
1488 |
|
|
* could only clamp the size down to acceptable bounds, but then
|
1489 |
|
|
* we'd need to figure out how to insert our smaller buffer into
|
1490 |
|
|
* larger caller's buffer... this is not an easy question. So we
|
1491 |
|
|
* here just flatly reject too large requests, assuming that the
|
1492 |
|
|
* caller will resubmit with smaller size. Callers should know
|
1493 |
|
|
* what size we support (returned by VIDIOCGCAP). However vidcat,
|
1494 |
|
|
* for one, does not care and allows to ask for any size.
|
1495 |
|
|
*/
|
1496 |
|
|
if ((vm.width > VIDEOSIZE_X(uvd->canvas)) ||
|
1497 |
|
|
(vm.height > VIDEOSIZE_Y(uvd->canvas))) {
|
1498 |
|
|
if (uvd->debug > 0) {
|
1499 |
|
|
info("VIDIOCMCAPTURE: Size=%dx%d too large; "
|
1500 |
|
|
"allowed only up to %ldx%ld", vm.width, vm.height,
|
1501 |
|
|
VIDEOSIZE_X(uvd->canvas), VIDEOSIZE_Y(uvd->canvas));
|
1502 |
|
|
}
|
1503 |
|
|
return -EINVAL;
|
1504 |
|
|
}
|
1505 |
|
|
/* Check if the palette is supported */
|
1506 |
|
|
if (((1L << vm.format) & uvd->paletteBits) == 0) {
|
1507 |
|
|
if (uvd->debug > 0) {
|
1508 |
|
|
info("VIDIOCMCAPTURE: format=%d. not supported"
|
1509 |
|
|
" (paletteBits=$%08lx)",
|
1510 |
|
|
vm.format, uvd->paletteBits);
|
1511 |
|
|
}
|
1512 |
|
|
return -EINVAL;
|
1513 |
|
|
}
|
1514 |
|
|
if ((vm.frame < 0) && (vm.frame >= USBVIDEO_NUMFRAMES)) {
|
1515 |
|
|
err("VIDIOCMCAPTURE: vm.frame=%d. !E [0-%d]", vm.frame, USBVIDEO_NUMFRAMES-1);
|
1516 |
|
|
return -EINVAL;
|
1517 |
|
|
}
|
1518 |
|
|
if (uvd->frame[vm.frame].frameState == FrameState_Grabbing) {
|
1519 |
|
|
/* Not an error - can happen */
|
1520 |
|
|
}
|
1521 |
|
|
uvd->frame[vm.frame].request = VIDEOSIZE(vm.width, vm.height);
|
1522 |
|
|
uvd->frame[vm.frame].palette = vm.format;
|
1523 |
|
|
|
1524 |
|
|
/* Mark it as ready */
|
1525 |
|
|
uvd->frame[vm.frame].frameState = FrameState_Ready;
|
1526 |
|
|
|
1527 |
|
|
return usbvideo_NewFrame(uvd, vm.frame);
|
1528 |
|
|
}
|
1529 |
|
|
case VIDIOCSYNC:
|
1530 |
|
|
{
|
1531 |
|
|
int frameNum, ret;
|
1532 |
|
|
|
1533 |
|
|
if (copy_from_user((void *)&frameNum, arg, sizeof(frameNum))) {
|
1534 |
|
|
err("VIDIOCSYNC: copy_from_user() failed.");
|
1535 |
|
|
return -EFAULT;
|
1536 |
|
|
}
|
1537 |
|
|
if(frameNum < 0 || frameNum >= USBVIDEO_NUMFRAMES)
|
1538 |
|
|
return -EINVAL;
|
1539 |
|
|
|
1540 |
|
|
if (uvd->debug >= 1)
|
1541 |
|
|
info("VIDIOCSYNC: syncing to frame %d.", frameNum);
|
1542 |
|
|
if (uvd->flags & FLAGS_NO_DECODING)
|
1543 |
|
|
ret = usbvideo_GetFrame(uvd, frameNum);
|
1544 |
|
|
else if (VALID_CALLBACK(uvd, getFrame)) {
|
1545 |
|
|
ret = GET_CALLBACK(uvd, getFrame)(uvd, frameNum);
|
1546 |
|
|
if ((ret < 0) && (uvd->debug >= 1)) {
|
1547 |
|
|
err("VIDIOCSYNC: getFrame() returned %d.", ret);
|
1548 |
|
|
}
|
1549 |
|
|
} else {
|
1550 |
|
|
err("VIDIOCSYNC: getFrame is not set");
|
1551 |
|
|
ret = -EFAULT;
|
1552 |
|
|
}
|
1553 |
|
|
|
1554 |
|
|
/*
|
1555 |
|
|
* The frame is in FrameState_Done_Hold state. Release it
|
1556 |
|
|
* right now because its data is already mapped into
|
1557 |
|
|
* the user space and it's up to the application to
|
1558 |
|
|
* make use of it until it asks for another frame.
|
1559 |
|
|
*/
|
1560 |
|
|
uvd->frame[frameNum].frameState = FrameState_Unused;
|
1561 |
|
|
return ret;
|
1562 |
|
|
}
|
1563 |
|
|
case VIDIOCGFBUF:
|
1564 |
|
|
{
|
1565 |
|
|
struct video_buffer vb;
|
1566 |
|
|
|
1567 |
|
|
memset(&vb, 0, sizeof(vb));
|
1568 |
|
|
vb.base = NULL; /* frame buffer not supported, not used */
|
1569 |
|
|
|
1570 |
|
|
if (copy_to_user((void *)arg, (void *)&vb, sizeof(vb)))
|
1571 |
|
|
return -EFAULT;
|
1572 |
|
|
|
1573 |
|
|
return 0;
|
1574 |
|
|
}
|
1575 |
|
|
case VIDIOCKEY:
|
1576 |
|
|
return 0;
|
1577 |
|
|
|
1578 |
|
|
case VIDIOCCAPTURE:
|
1579 |
|
|
return -EINVAL;
|
1580 |
|
|
|
1581 |
|
|
case VIDIOCSFBUF:
|
1582 |
|
|
|
1583 |
|
|
case VIDIOCGTUNER:
|
1584 |
|
|
case VIDIOCSTUNER:
|
1585 |
|
|
|
1586 |
|
|
case VIDIOCGFREQ:
|
1587 |
|
|
case VIDIOCSFREQ:
|
1588 |
|
|
|
1589 |
|
|
case VIDIOCGAUDIO:
|
1590 |
|
|
case VIDIOCSAUDIO:
|
1591 |
|
|
return -EINVAL;
|
1592 |
|
|
|
1593 |
|
|
default:
|
1594 |
|
|
return -ENOIOCTLCMD;
|
1595 |
|
|
}
|
1596 |
|
|
return 0;
|
1597 |
|
|
}
|
1598 |
|
|
|
1599 |
|
|
/*
|
1600 |
|
|
* usbvideo_v4l_read()
|
1601 |
|
|
*
|
1602 |
|
|
* This is mostly boring stuff. We simply ask for a frame and when it
|
1603 |
|
|
* arrives copy all the video data from it into user space. There is
|
1604 |
|
|
* no obvious need to override this method.
|
1605 |
|
|
*
|
1606 |
|
|
* History:
|
1607 |
|
|
* 20-Oct-2000 Created.
|
1608 |
|
|
* 01-Nov-2000 Added mutex (uvd->lock).
|
1609 |
|
|
*/
|
1610 |
|
|
long usbvideo_v4l_read(struct video_device *dev, char *buf, unsigned long count, int noblock)
|
1611 |
|
|
{
|
1612 |
|
|
struct uvd *uvd = (struct uvd *) dev;
|
1613 |
|
|
int frmx = -1, i;
|
1614 |
|
|
struct usbvideo_frame *frame;
|
1615 |
|
|
|
1616 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd) || (buf == NULL))
|
1617 |
|
|
return -EFAULT;
|
1618 |
|
|
|
1619 |
|
|
if (uvd->debug >= 1)
|
1620 |
|
|
info("%s: %ld. bytes, noblock=%d.", __FUNCTION__, count, noblock);
|
1621 |
|
|
|
1622 |
|
|
down(&uvd->lock);
|
1623 |
|
|
|
1624 |
|
|
/* See if a frame is completed, then use it. */
|
1625 |
|
|
for(i = 0; i < USBVIDEO_NUMFRAMES; i++) {
|
1626 |
|
|
if ((uvd->frame[i].frameState == FrameState_Done) ||
|
1627 |
|
|
(uvd->frame[i].frameState == FrameState_Done_Hold) ||
|
1628 |
|
|
(uvd->frame[i].frameState == FrameState_Error)) {
|
1629 |
|
|
frmx = i;
|
1630 |
|
|
break;
|
1631 |
|
|
}
|
1632 |
|
|
}
|
1633 |
|
|
|
1634 |
|
|
/* FIXME: If we don't start a frame here then who ever does? */
|
1635 |
|
|
if (noblock && (frmx == -1)) {
|
1636 |
|
|
count = -EAGAIN;
|
1637 |
|
|
goto read_done;
|
1638 |
|
|
}
|
1639 |
|
|
|
1640 |
|
|
/*
|
1641 |
|
|
* If no FrameState_Done, look for a FrameState_Grabbing state.
|
1642 |
|
|
* See if a frame is in process (grabbing), then use it.
|
1643 |
|
|
* We will need to wait until it becomes cooked, of course.
|
1644 |
|
|
*/
|
1645 |
|
|
if (frmx == -1) {
|
1646 |
|
|
for(i = 0; i < USBVIDEO_NUMFRAMES; i++) {
|
1647 |
|
|
if (uvd->frame[i].frameState == FrameState_Grabbing) {
|
1648 |
|
|
frmx = i;
|
1649 |
|
|
break;
|
1650 |
|
|
}
|
1651 |
|
|
}
|
1652 |
|
|
}
|
1653 |
|
|
|
1654 |
|
|
/*
|
1655 |
|
|
* If no frame is active, start one. We don't care which one
|
1656 |
|
|
* it will be, so #0 is as good as any.
|
1657 |
|
|
* In read access mode we don't have convenience of VIDIOCMCAPTURE
|
1658 |
|
|
* to specify the requested palette (video format) on per-frame
|
1659 |
|
|
* basis. This means that we have to return data in -some- format
|
1660 |
|
|
* and just hope that the client knows what to do with it.
|
1661 |
|
|
* The default format is configured in uvd->defaultPalette field
|
1662 |
|
|
* as one of VIDEO_PALETTE_xxx values. We stuff it into the new
|
1663 |
|
|
* frame and initiate the frame filling process.
|
1664 |
|
|
*/
|
1665 |
|
|
if (frmx == -1) {
|
1666 |
|
|
if (uvd->defaultPalette == 0) {
|
1667 |
|
|
err("%s: No default palette; don't know what to do!", __FUNCTION__);
|
1668 |
|
|
count = -EFAULT;
|
1669 |
|
|
goto read_done;
|
1670 |
|
|
}
|
1671 |
|
|
frmx = 0;
|
1672 |
|
|
/*
|
1673 |
|
|
* We have no per-frame control over video size.
|
1674 |
|
|
* Therefore we only can use whatever size was
|
1675 |
|
|
* specified as default.
|
1676 |
|
|
*/
|
1677 |
|
|
uvd->frame[frmx].request = uvd->videosize;
|
1678 |
|
|
uvd->frame[frmx].palette = uvd->defaultPalette;
|
1679 |
|
|
uvd->frame[frmx].frameState = FrameState_Ready;
|
1680 |
|
|
usbvideo_NewFrame(uvd, frmx);
|
1681 |
|
|
/* Now frame 0 is supposed to start filling... */
|
1682 |
|
|
}
|
1683 |
|
|
|
1684 |
|
|
/*
|
1685 |
|
|
* Get a pointer to the active frame. It is either previously
|
1686 |
|
|
* completed frame or frame in progress but not completed yet.
|
1687 |
|
|
*/
|
1688 |
|
|
frame = &uvd->frame[frmx];
|
1689 |
|
|
|
1690 |
|
|
/*
|
1691 |
|
|
* Sit back & wait until the frame gets filled and postprocessed.
|
1692 |
|
|
* If we fail to get the picture [in time] then return the error.
|
1693 |
|
|
* In this call we specify that we want the frame to be waited for,
|
1694 |
|
|
* postprocessed and switched into FrameState_Done_Hold state. This
|
1695 |
|
|
* state is used to hold the frame as "fully completed" between
|
1696 |
|
|
* subsequent partial reads of the same frame.
|
1697 |
|
|
*/
|
1698 |
|
|
if (frame->frameState != FrameState_Done_Hold) {
|
1699 |
|
|
long rv = -EFAULT;
|
1700 |
|
|
if (uvd->flags & FLAGS_NO_DECODING)
|
1701 |
|
|
rv = usbvideo_GetFrame(uvd, frmx);
|
1702 |
|
|
else if (VALID_CALLBACK(uvd, getFrame))
|
1703 |
|
|
rv = GET_CALLBACK(uvd, getFrame)(uvd, frmx);
|
1704 |
|
|
else
|
1705 |
|
|
err("getFrame is not set");
|
1706 |
|
|
if ((rv != 0) || (frame->frameState != FrameState_Done_Hold)) {
|
1707 |
|
|
count = rv;
|
1708 |
|
|
goto read_done;
|
1709 |
|
|
}
|
1710 |
|
|
}
|
1711 |
|
|
|
1712 |
|
|
/*
|
1713 |
|
|
* Copy bytes to user space. We allow for partial reads, which
|
1714 |
|
|
* means that the user application can request read less than
|
1715 |
|
|
* the full frame size. It is up to the application to issue
|
1716 |
|
|
* subsequent calls until entire frame is read.
|
1717 |
|
|
*
|
1718 |
|
|
* First things first, make sure we don't copy more than we
|
1719 |
|
|
* have - even if the application wants more. That would be
|
1720 |
|
|
* a big security embarassment!
|
1721 |
|
|
*/
|
1722 |
|
|
|
1723 |
|
|
if (count + frame->seqRead_Index < count)
|
1724 |
|
|
{
|
1725 |
|
|
count = -EINVAL;
|
1726 |
|
|
goto read_done;
|
1727 |
|
|
}
|
1728 |
|
|
if ((count + frame->seqRead_Index) > frame->seqRead_Length)
|
1729 |
|
|
count = frame->seqRead_Length - frame->seqRead_Index;
|
1730 |
|
|
|
1731 |
|
|
/*
|
1732 |
|
|
* Copy requested amount of data to user space. We start
|
1733 |
|
|
* copying from the position where we last left it, which
|
1734 |
|
|
* will be zero for a new frame (not read before).
|
1735 |
|
|
*/
|
1736 |
|
|
if (copy_to_user(buf, frame->data + frame->seqRead_Index, count)) {
|
1737 |
|
|
count = -EFAULT;
|
1738 |
|
|
goto read_done;
|
1739 |
|
|
}
|
1740 |
|
|
|
1741 |
|
|
/* Update last read position */
|
1742 |
|
|
frame->seqRead_Index += count;
|
1743 |
|
|
if (uvd->debug >= 1) {
|
1744 |
|
|
err("%s: {copy} count used=%ld, new seqRead_Index=%ld",
|
1745 |
|
|
__FUNCTION__, count, frame->seqRead_Index);
|
1746 |
|
|
}
|
1747 |
|
|
|
1748 |
|
|
/* Finally check if the frame is done with and "release" it */
|
1749 |
|
|
if (frame->seqRead_Index >= frame->seqRead_Length) {
|
1750 |
|
|
/* All data has been read */
|
1751 |
|
|
frame->seqRead_Index = 0;
|
1752 |
|
|
|
1753 |
|
|
/* Mark it as available to be used again. */
|
1754 |
|
|
uvd->frame[frmx].frameState = FrameState_Unused;
|
1755 |
|
|
if (usbvideo_NewFrame(uvd, (frmx + 1) % USBVIDEO_NUMFRAMES)) {
|
1756 |
|
|
err("%s: usbvideo_NewFrame failed.", __FUNCTION__);
|
1757 |
|
|
}
|
1758 |
|
|
}
|
1759 |
|
|
read_done:
|
1760 |
|
|
up(&uvd->lock);
|
1761 |
|
|
return count;
|
1762 |
|
|
}
|
1763 |
|
|
|
1764 |
|
|
/*
|
1765 |
|
|
* Make all of the blocks of data contiguous
|
1766 |
|
|
*/
|
1767 |
|
|
static int usbvideo_CompressIsochronous(struct uvd *uvd, struct urb *urb)
|
1768 |
|
|
{
|
1769 |
|
|
char *cdata;
|
1770 |
|
|
int i, totlen = 0;
|
1771 |
|
|
|
1772 |
|
|
for (i = 0; i < urb->number_of_packets; i++) {
|
1773 |
|
|
int n = urb->iso_frame_desc[i].actual_length;
|
1774 |
|
|
int st = urb->iso_frame_desc[i].status;
|
1775 |
|
|
|
1776 |
|
|
cdata = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
|
1777 |
|
|
|
1778 |
|
|
/* Detect and ignore errored packets */
|
1779 |
|
|
if (st < 0) {
|
1780 |
|
|
if (uvd->debug >= 1)
|
1781 |
|
|
err("Data error: packet=%d. len=%d. status=%d.", i, n, st);
|
1782 |
|
|
uvd->stats.iso_err_count++;
|
1783 |
|
|
continue;
|
1784 |
|
|
}
|
1785 |
|
|
|
1786 |
|
|
/* Detect and ignore empty packets */
|
1787 |
|
|
if (n <= 0) {
|
1788 |
|
|
uvd->stats.iso_skip_count++;
|
1789 |
|
|
continue;
|
1790 |
|
|
}
|
1791 |
|
|
totlen += n; /* Little local accounting */
|
1792 |
|
|
RingQueue_Enqueue(&uvd->dp, cdata, n);
|
1793 |
|
|
}
|
1794 |
|
|
return totlen;
|
1795 |
|
|
}
|
1796 |
|
|
|
1797 |
|
|
static void usbvideo_IsocIrq(struct urb *urb)
|
1798 |
|
|
{
|
1799 |
|
|
int i, len;
|
1800 |
|
|
struct uvd *uvd = urb->context;
|
1801 |
|
|
|
1802 |
|
|
/* We don't want to do anything if we are about to be removed! */
|
1803 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd))
|
1804 |
|
|
return;
|
1805 |
|
|
#if 0
|
1806 |
|
|
if (urb->actual_length > 0) {
|
1807 |
|
|
info("urb=$%p status=%d. errcount=%d. length=%d.",
|
1808 |
|
|
urb, urb->status, urb->error_count, urb->actual_length);
|
1809 |
|
|
} else {
|
1810 |
|
|
static int c = 0;
|
1811 |
|
|
if (c++ % 100 == 0)
|
1812 |
|
|
info("No Isoc data");
|
1813 |
|
|
}
|
1814 |
|
|
#endif
|
1815 |
|
|
|
1816 |
|
|
if (!uvd->streaming) {
|
1817 |
|
|
if (uvd->debug >= 1)
|
1818 |
|
|
info("Not streaming, but interrupt!");
|
1819 |
|
|
return;
|
1820 |
|
|
}
|
1821 |
|
|
|
1822 |
|
|
uvd->stats.urb_count++;
|
1823 |
|
|
if (urb->actual_length <= 0)
|
1824 |
|
|
goto urb_done_with;
|
1825 |
|
|
|
1826 |
|
|
/* Copy the data received into ring queue */
|
1827 |
|
|
len = usbvideo_CompressIsochronous(uvd, urb);
|
1828 |
|
|
uvd->stats.urb_length = len;
|
1829 |
|
|
if (len <= 0)
|
1830 |
|
|
goto urb_done_with;
|
1831 |
|
|
|
1832 |
|
|
/* Here we got some data */
|
1833 |
|
|
uvd->stats.data_count += len;
|
1834 |
|
|
RingQueue_WakeUpInterruptible(&uvd->dp);
|
1835 |
|
|
|
1836 |
|
|
urb_done_with:
|
1837 |
|
|
for (i = 0; i < FRAMES_PER_DESC; i++) {
|
1838 |
|
|
urb->iso_frame_desc[i].status = 0;
|
1839 |
|
|
urb->iso_frame_desc[i].actual_length = 0;
|
1840 |
|
|
}
|
1841 |
|
|
return;
|
1842 |
|
|
}
|
1843 |
|
|
|
1844 |
|
|
/*
|
1845 |
|
|
* usbvideo_StartDataPump()
|
1846 |
|
|
*
|
1847 |
|
|
* History:
|
1848 |
|
|
* 27-Jan-2000 Used ibmcam->iface, ibmcam->ifaceAltActive instead
|
1849 |
|
|
* of hardcoded values. Simplified by using for loop,
|
1850 |
|
|
* allowed any number of URBs.
|
1851 |
|
|
*/
|
1852 |
|
|
int usbvideo_StartDataPump(struct uvd *uvd)
|
1853 |
|
|
{
|
1854 |
|
|
struct usb_device *dev = uvd->dev;
|
1855 |
|
|
int i, errFlag;
|
1856 |
|
|
|
1857 |
|
|
if (uvd->debug > 1)
|
1858 |
|
|
info("%s($%p)", __FUNCTION__, uvd);
|
1859 |
|
|
|
1860 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd)) {
|
1861 |
|
|
err("%s: Camera is not operational", __FUNCTION__);
|
1862 |
|
|
return -EFAULT;
|
1863 |
|
|
}
|
1864 |
|
|
uvd->curframe = -1;
|
1865 |
|
|
|
1866 |
|
|
/* Alternate interface 1 is is the biggest frame size */
|
1867 |
|
|
i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
|
1868 |
|
|
if (i < 0) {
|
1869 |
|
|
err("%s: usb_set_interface error", __FUNCTION__);
|
1870 |
|
|
uvd->last_error = i;
|
1871 |
|
|
return -EBUSY;
|
1872 |
|
|
}
|
1873 |
|
|
if (VALID_CALLBACK(uvd, videoStart))
|
1874 |
|
|
GET_CALLBACK(uvd, videoStart)(uvd);
|
1875 |
|
|
else
|
1876 |
|
|
err("%s: videoStart not set", __FUNCTION__);
|
1877 |
|
|
|
1878 |
|
|
/* We double buffer the Iso lists */
|
1879 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1880 |
|
|
int j, k;
|
1881 |
|
|
struct urb *urb = uvd->sbuf[i].urb;
|
1882 |
|
|
urb->dev = dev;
|
1883 |
|
|
urb->context = uvd;
|
1884 |
|
|
urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
|
1885 |
|
|
urb->transfer_flags = USB_ISO_ASAP;
|
1886 |
|
|
urb->transfer_buffer = uvd->sbuf[i].data;
|
1887 |
|
|
urb->complete = usbvideo_IsocIrq;
|
1888 |
|
|
urb->number_of_packets = FRAMES_PER_DESC;
|
1889 |
|
|
urb->transfer_buffer_length = uvd->iso_packet_len * FRAMES_PER_DESC;
|
1890 |
|
|
for (j=k=0; j < FRAMES_PER_DESC; j++, k += uvd->iso_packet_len) {
|
1891 |
|
|
urb->iso_frame_desc[j].offset = k;
|
1892 |
|
|
urb->iso_frame_desc[j].length = uvd->iso_packet_len;
|
1893 |
|
|
}
|
1894 |
|
|
}
|
1895 |
|
|
|
1896 |
|
|
/* Link URBs into a ring so that they invoke each other infinitely */
|
1897 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1898 |
|
|
if ((i+1) < USBVIDEO_NUMSBUF)
|
1899 |
|
|
uvd->sbuf[i].urb->next = uvd->sbuf[i+1].urb;
|
1900 |
|
|
else
|
1901 |
|
|
uvd->sbuf[i].urb->next = uvd->sbuf[0].urb;
|
1902 |
|
|
}
|
1903 |
|
|
|
1904 |
|
|
/* Submit all URBs */
|
1905 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1906 |
|
|
errFlag = usb_submit_urb(uvd->sbuf[i].urb);
|
1907 |
|
|
if (errFlag)
|
1908 |
|
|
err("%s: usb_submit_isoc(%d) ret %d", __FUNCTION__, i, errFlag);
|
1909 |
|
|
}
|
1910 |
|
|
|
1911 |
|
|
uvd->streaming = 1;
|
1912 |
|
|
if (uvd->debug > 1)
|
1913 |
|
|
info("%s: streaming=1 video_endp=$%02x", __FUNCTION__, uvd->video_endp);
|
1914 |
|
|
return 0;
|
1915 |
|
|
}
|
1916 |
|
|
|
1917 |
|
|
/*
|
1918 |
|
|
* usbvideo_StopDataPump()
|
1919 |
|
|
*
|
1920 |
|
|
* This procedure stops streaming and deallocates URBs. Then it
|
1921 |
|
|
* activates zero-bandwidth alt. setting of the video interface.
|
1922 |
|
|
*
|
1923 |
|
|
* History:
|
1924 |
|
|
* 22-Jan-2000 Corrected order of actions to work after surprise removal.
|
1925 |
|
|
* 27-Jan-2000 Used uvd->iface, uvd->ifaceAltInactive instead of hardcoded values.
|
1926 |
|
|
*/
|
1927 |
|
|
void usbvideo_StopDataPump(struct uvd *uvd)
|
1928 |
|
|
{
|
1929 |
|
|
int i, j;
|
1930 |
|
|
|
1931 |
|
|
if (uvd->debug > 1)
|
1932 |
|
|
info("%s($%p)", __FUNCTION__, uvd);
|
1933 |
|
|
|
1934 |
|
|
if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
|
1935 |
|
|
return;
|
1936 |
|
|
|
1937 |
|
|
/* Unschedule all of the iso td's */
|
1938 |
|
|
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
|
1939 |
|
|
j = usb_unlink_urb(uvd->sbuf[i].urb);
|
1940 |
|
|
if (j < 0)
|
1941 |
|
|
err("%s: usb_unlink_urb() error %d.", __FUNCTION__, j);
|
1942 |
|
|
}
|
1943 |
|
|
if (uvd->debug > 1)
|
1944 |
|
|
info("%s: streaming=0", __FUNCTION__);
|
1945 |
|
|
uvd->streaming = 0;
|
1946 |
|
|
|
1947 |
|
|
if (!uvd->remove_pending) {
|
1948 |
|
|
/* Invoke minidriver's magic to stop the camera */
|
1949 |
|
|
if (VALID_CALLBACK(uvd, videoStop))
|
1950 |
|
|
GET_CALLBACK(uvd, videoStop)(uvd);
|
1951 |
|
|
else
|
1952 |
|
|
err("%s: videoStop not set", __FUNCTION__);
|
1953 |
|
|
|
1954 |
|
|
/* Set packet size to 0 */
|
1955 |
|
|
j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
|
1956 |
|
|
if (j < 0) {
|
1957 |
|
|
err("%s: usb_set_interface() error %d.", __FUNCTION__, j);
|
1958 |
|
|
uvd->last_error = j;
|
1959 |
|
|
}
|
1960 |
|
|
}
|
1961 |
|
|
}
|
1962 |
|
|
|
1963 |
|
|
/*
|
1964 |
|
|
* usbvideo_NewFrame()
|
1965 |
|
|
*
|
1966 |
|
|
* History:
|
1967 |
|
|
* 29-Mar-00 Added copying of previous frame into the current one.
|
1968 |
|
|
* 6-Aug-00 Added model 3 video sizes, removed redundant width, height.
|
1969 |
|
|
*/
|
1970 |
|
|
int usbvideo_NewFrame(struct uvd *uvd, int framenum)
|
1971 |
|
|
{
|
1972 |
|
|
struct usbvideo_frame *frame;
|
1973 |
|
|
int n;
|
1974 |
|
|
|
1975 |
|
|
if (uvd->debug > 1)
|
1976 |
|
|
info("usbvideo_NewFrame($%p,%d.)", uvd, framenum);
|
1977 |
|
|
|
1978 |
|
|
/* If we're not grabbing a frame right now and the other frame is */
|
1979 |
|
|
/* ready to be grabbed into, then use it instead */
|
1980 |
|
|
if (uvd->curframe != -1)
|
1981 |
|
|
return 0;
|
1982 |
|
|
|
1983 |
|
|
/* If necessary we adjust picture settings between frames */
|
1984 |
|
|
if (!uvd->settingsAdjusted) {
|
1985 |
|
|
if (VALID_CALLBACK(uvd, adjustPicture))
|
1986 |
|
|
GET_CALLBACK(uvd, adjustPicture)(uvd);
|
1987 |
|
|
uvd->settingsAdjusted = 1;
|
1988 |
|
|
}
|
1989 |
|
|
|
1990 |
|
|
n = (framenum + 1) % USBVIDEO_NUMFRAMES;
|
1991 |
|
|
if (uvd->frame[n].frameState == FrameState_Ready)
|
1992 |
|
|
framenum = n;
|
1993 |
|
|
|
1994 |
|
|
frame = &uvd->frame[framenum];
|
1995 |
|
|
|
1996 |
|
|
frame->frameState = FrameState_Grabbing;
|
1997 |
|
|
frame->scanstate = ScanState_Scanning;
|
1998 |
|
|
frame->seqRead_Length = 0; /* Accumulated in xxx_parse_data() */
|
1999 |
|
|
frame->deinterlace = Deinterlace_None;
|
2000 |
|
|
frame->flags = 0; /* No flags yet, up to minidriver (or us) to set them */
|
2001 |
|
|
uvd->curframe = framenum;
|
2002 |
|
|
|
2003 |
|
|
/*
|
2004 |
|
|
* Normally we would want to copy previous frame into the current one
|
2005 |
|
|
* before we even start filling it with data; this allows us to stop
|
2006 |
|
|
* filling at any moment; top portion of the frame will be new and
|
2007 |
|
|
* bottom portion will stay as it was in previous frame. If we don't
|
2008 |
|
|
* do that then missing chunks of video stream will result in flickering
|
2009 |
|
|
* portions of old data whatever it was before.
|
2010 |
|
|
*
|
2011 |
|
|
* If we choose not to copy previous frame (to, for example, save few
|
2012 |
|
|
* bus cycles - the frame can be pretty large!) then we have an option
|
2013 |
|
|
* to clear the frame before using. If we experience losses in this
|
2014 |
|
|
* mode then missing picture will be black (no flickering).
|
2015 |
|
|
*
|
2016 |
|
|
* Finally, if user chooses not to clean the current frame before
|
2017 |
|
|
* filling it with data then the old data will be visible if we fail
|
2018 |
|
|
* to refill entire frame with new data.
|
2019 |
|
|
*/
|
2020 |
|
|
if (!(uvd->flags & FLAGS_SEPARATE_FRAMES)) {
|
2021 |
|
|
/* This copies previous frame into this one to mask losses */
|
2022 |
|
|
int prev = (framenum - 1 + USBVIDEO_NUMFRAMES) % USBVIDEO_NUMFRAMES;
|
2023 |
|
|
memmove(frame->data, uvd->frame[prev].data, uvd->max_frame_size);
|
2024 |
|
|
} else {
|
2025 |
|
|
if (uvd->flags & FLAGS_CLEAN_FRAMES) {
|
2026 |
|
|
/* This provides a "clean" frame but slows things down */
|
2027 |
|
|
memset(frame->data, 0, uvd->max_frame_size);
|
2028 |
|
|
}
|
2029 |
|
|
}
|
2030 |
|
|
return 0;
|
2031 |
|
|
}
|
2032 |
|
|
|
2033 |
|
|
/*
|
2034 |
|
|
* usbvideo_CollectRawData()
|
2035 |
|
|
*
|
2036 |
|
|
* This procedure can be used instead of 'processData' callback if you
|
2037 |
|
|
* only want to dump the raw data from the camera into the output
|
2038 |
|
|
* device (frame buffer). You can look at it with V4L client, but the
|
2039 |
|
|
* image will be unwatchable. The main purpose of this code and of the
|
2040 |
|
|
* mode FLAGS_NO_DECODING is debugging and capturing of datastreams from
|
2041 |
|
|
* new, unknown cameras. This procedure will be automatically invoked
|
2042 |
|
|
* instead of the specified callback handler when uvd->flags has bit
|
2043 |
|
|
* FLAGS_NO_DECODING set. Therefore, any regular build of any driver
|
2044 |
|
|
* based on usbvideo can use this feature at any time.
|
2045 |
|
|
*/
|
2046 |
|
|
void usbvideo_CollectRawData(struct uvd *uvd, struct usbvideo_frame *frame)
|
2047 |
|
|
{
|
2048 |
|
|
int n;
|
2049 |
|
|
|
2050 |
|
|
assert(uvd != NULL);
|
2051 |
|
|
assert(frame != NULL);
|
2052 |
|
|
|
2053 |
|
|
/* Try to move data from queue into frame buffer */
|
2054 |
|
|
n = RingQueue_GetLength(&uvd->dp);
|
2055 |
|
|
if (n > 0) {
|
2056 |
|
|
int m;
|
2057 |
|
|
/* See how much space we have left */
|
2058 |
|
|
m = uvd->max_frame_size - frame->seqRead_Length;
|
2059 |
|
|
if (n > m)
|
2060 |
|
|
n = m;
|
2061 |
|
|
/* Now move that much data into frame buffer */
|
2062 |
|
|
RingQueue_Dequeue(
|
2063 |
|
|
&uvd->dp,
|
2064 |
|
|
frame->data + frame->seqRead_Length,
|
2065 |
|
|
m);
|
2066 |
|
|
frame->seqRead_Length += m;
|
2067 |
|
|
}
|
2068 |
|
|
/* See if we filled the frame */
|
2069 |
|
|
if (frame->seqRead_Length >= uvd->max_frame_size) {
|
2070 |
|
|
frame->frameState = FrameState_Done;
|
2071 |
|
|
uvd->curframe = -1;
|
2072 |
|
|
uvd->stats.frame_num++;
|
2073 |
|
|
}
|
2074 |
|
|
}
|
2075 |
|
|
|
2076 |
|
|
int usbvideo_GetFrame(struct uvd *uvd, int frameNum)
|
2077 |
|
|
{
|
2078 |
|
|
struct usbvideo_frame *frame = &uvd->frame[frameNum];
|
2079 |
|
|
|
2080 |
|
|
if (uvd->debug >= 2)
|
2081 |
|
|
info("%s($%p,%d.)", __FUNCTION__, uvd, frameNum);
|
2082 |
|
|
|
2083 |
|
|
switch (frame->frameState) {
|
2084 |
|
|
case FrameState_Unused:
|
2085 |
|
|
if (uvd->debug >= 2)
|
2086 |
|
|
info("%s: FrameState_Unused", __FUNCTION__);
|
2087 |
|
|
return -EINVAL;
|
2088 |
|
|
case FrameState_Ready:
|
2089 |
|
|
case FrameState_Grabbing:
|
2090 |
|
|
case FrameState_Error:
|
2091 |
|
|
{
|
2092 |
|
|
int ntries, signalPending;
|
2093 |
|
|
redo:
|
2094 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd)) {
|
2095 |
|
|
if (uvd->debug >= 2)
|
2096 |
|
|
info("%s: Camera is not operational (1)", __FUNCTION__);
|
2097 |
|
|
return -EIO;
|
2098 |
|
|
}
|
2099 |
|
|
ntries = 0;
|
2100 |
|
|
do {
|
2101 |
|
|
RingQueue_InterruptibleSleepOn(&uvd->dp);
|
2102 |
|
|
signalPending = signal_pending(current);
|
2103 |
|
|
if (!CAMERA_IS_OPERATIONAL(uvd)) {
|
2104 |
|
|
if (uvd->debug >= 2)
|
2105 |
|
|
info("%s: Camera is not operational (2)", __FUNCTION__);
|
2106 |
|
|
return -EIO;
|
2107 |
|
|
}
|
2108 |
|
|
assert(uvd->fbuf != NULL);
|
2109 |
|
|
if (signalPending) {
|
2110 |
|
|
if (uvd->debug >= 2)
|
2111 |
|
|
info("%s: Signal=$%08x", __FUNCTION__, signalPending);
|
2112 |
|
|
if (uvd->flags & FLAGS_RETRY_VIDIOCSYNC) {
|
2113 |
|
|
usbvideo_TestPattern(uvd, 1, 0);
|
2114 |
|
|
uvd->curframe = -1;
|
2115 |
|
|
uvd->stats.frame_num++;
|
2116 |
|
|
if (uvd->debug >= 2)
|
2117 |
|
|
info("%s: Forced test pattern screen", __FUNCTION__);
|
2118 |
|
|
return 0;
|
2119 |
|
|
} else {
|
2120 |
|
|
/* Standard answer: Interrupted! */
|
2121 |
|
|
if (uvd->debug >= 2)
|
2122 |
|
|
info("%s: Interrupted!", __FUNCTION__);
|
2123 |
|
|
return -EINTR;
|
2124 |
|
|
}
|
2125 |
|
|
} else {
|
2126 |
|
|
/* No signals - we just got new data in dp queue */
|
2127 |
|
|
if (uvd->flags & FLAGS_NO_DECODING)
|
2128 |
|
|
usbvideo_CollectRawData(uvd, frame);
|
2129 |
|
|
else if (VALID_CALLBACK(uvd, processData))
|
2130 |
|
|
GET_CALLBACK(uvd, processData)(uvd, frame);
|
2131 |
|
|
else
|
2132 |
|
|
err("%s: processData not set", __FUNCTION__);
|
2133 |
|
|
}
|
2134 |
|
|
} while (frame->frameState == FrameState_Grabbing);
|
2135 |
|
|
if (uvd->debug >= 2) {
|
2136 |
|
|
info("%s: Grabbing done; state=%d. (%lu. bytes)",
|
2137 |
|
|
__FUNCTION__, frame->frameState, frame->seqRead_Length);
|
2138 |
|
|
}
|
2139 |
|
|
if (frame->frameState == FrameState_Error) {
|
2140 |
|
|
int ret = usbvideo_NewFrame(uvd, frameNum);
|
2141 |
|
|
if (ret < 0) {
|
2142 |
|
|
err("%s: usbvideo_NewFrame() failed (%d.)", __FUNCTION__, ret);
|
2143 |
|
|
return ret;
|
2144 |
|
|
}
|
2145 |
|
|
goto redo;
|
2146 |
|
|
}
|
2147 |
|
|
/* Note that we fall through to meet our destiny below */
|
2148 |
|
|
}
|
2149 |
|
|
case FrameState_Done:
|
2150 |
|
|
/*
|
2151 |
|
|
* Do all necessary postprocessing of data prepared in
|
2152 |
|
|
* "interrupt" code and the collecting code above. The
|
2153 |
|
|
* frame gets marked as FrameState_Done by queue parsing code.
|
2154 |
|
|
* This status means that we collected enough data and
|
2155 |
|
|
* most likely processed it as we went through. However
|
2156 |
|
|
* the data may need postprocessing, such as deinterlacing
|
2157 |
|
|
* or picture adjustments implemented in software (horror!)
|
2158 |
|
|
*
|
2159 |
|
|
* As soon as the frame becomes "final" it gets promoted to
|
2160 |
|
|
* FrameState_Done_Hold status where it will remain until the
|
2161 |
|
|
* caller consumed all the video data from the frame. Then
|
2162 |
|
|
* the empty shell of ex-frame is thrown out for dogs to eat.
|
2163 |
|
|
* But we, worried about pets, will recycle the frame!
|
2164 |
|
|
*/
|
2165 |
|
|
uvd->stats.frame_num++;
|
2166 |
|
|
if ((uvd->flags & FLAGS_NO_DECODING) == 0) {
|
2167 |
|
|
if (VALID_CALLBACK(uvd, postProcess))
|
2168 |
|
|
GET_CALLBACK(uvd, postProcess)(uvd, frame);
|
2169 |
|
|
if (frame->flags & USBVIDEO_FRAME_FLAG_SOFTWARE_CONTRAST)
|
2170 |
|
|
usbvideo_SoftwareContrastAdjustment(uvd, frame);
|
2171 |
|
|
}
|
2172 |
|
|
frame->frameState = FrameState_Done_Hold;
|
2173 |
|
|
if (uvd->debug >= 2)
|
2174 |
|
|
info("%s: Entered FrameState_Done_Hold state.", __FUNCTION__);
|
2175 |
|
|
return 0;
|
2176 |
|
|
|
2177 |
|
|
case FrameState_Done_Hold:
|
2178 |
|
|
/*
|
2179 |
|
|
* We stay in this state indefinitely until someone external,
|
2180 |
|
|
* like ioctl() or read() call finishes digesting the frame
|
2181 |
|
|
* data. Then it will mark the frame as FrameState_Unused and
|
2182 |
|
|
* it will be released back into the wild to roam freely.
|
2183 |
|
|
*/
|
2184 |
|
|
if (uvd->debug >= 2)
|
2185 |
|
|
info("%s: FrameState_Done_Hold state.", __FUNCTION__);
|
2186 |
|
|
return 0;
|
2187 |
|
|
}
|
2188 |
|
|
|
2189 |
|
|
/* Catch-all for other cases. We shall not be here. */
|
2190 |
|
|
err("%s: Invalid state %d.", __FUNCTION__, frame->frameState);
|
2191 |
|
|
frame->frameState = FrameState_Unused;
|
2192 |
|
|
return 0;
|
2193 |
|
|
}
|
2194 |
|
|
|
2195 |
|
|
/*
|
2196 |
|
|
* usbvideo_DeinterlaceFrame()
|
2197 |
|
|
*
|
2198 |
|
|
* This procedure deinterlaces the given frame. Some cameras produce
|
2199 |
|
|
* only half of scanlines - sometimes only even lines, sometimes only
|
2200 |
|
|
* odd lines. The deinterlacing method is stored in frame->deinterlace
|
2201 |
|
|
* variable.
|
2202 |
|
|
*
|
2203 |
|
|
* Here we scan the frame vertically and replace missing scanlines with
|
2204 |
|
|
* average between surrounding ones - before and after. If we have no
|
2205 |
|
|
* line above then we just copy next line. Similarly, if we need to
|
2206 |
|
|
* create a last line then preceding line is used.
|
2207 |
|
|
*/
|
2208 |
|
|
void usbvideo_DeinterlaceFrame(struct uvd *uvd, struct usbvideo_frame *frame)
|
2209 |
|
|
{
|
2210 |
|
|
if ((uvd == NULL) || (frame == NULL))
|
2211 |
|
|
return;
|
2212 |
|
|
|
2213 |
|
|
if ((frame->deinterlace == Deinterlace_FillEvenLines) ||
|
2214 |
|
|
(frame->deinterlace == Deinterlace_FillOddLines))
|
2215 |
|
|
{
|
2216 |
|
|
const int v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
|
2217 |
|
|
int i = (frame->deinterlace == Deinterlace_FillEvenLines) ? 0 : 1;
|
2218 |
|
|
|
2219 |
|
|
for (; i < VIDEOSIZE_Y(frame->request); i += 2) {
|
2220 |
|
|
const unsigned char *fs1, *fs2;
|
2221 |
|
|
unsigned char *fd;
|
2222 |
|
|
int ip, in, j; /* Previous and next lines */
|
2223 |
|
|
|
2224 |
|
|
/*
|
2225 |
|
|
* Need to average lines before and after 'i'.
|
2226 |
|
|
* If we go out of bounds seeking those lines then
|
2227 |
|
|
* we point back to existing line.
|
2228 |
|
|
*/
|
2229 |
|
|
ip = i - 1; /* First, get rough numbers */
|
2230 |
|
|
in = i + 1;
|
2231 |
|
|
|
2232 |
|
|
/* Now validate */
|
2233 |
|
|
if (ip < 0)
|
2234 |
|
|
ip = in;
|
2235 |
|
|
if (in >= VIDEOSIZE_Y(frame->request))
|
2236 |
|
|
in = ip;
|
2237 |
|
|
|
2238 |
|
|
/* Sanity check */
|
2239 |
|
|
if ((ip < 0) || (in < 0) ||
|
2240 |
|
|
(ip >= VIDEOSIZE_Y(frame->request)) ||
|
2241 |
|
|
(in >= VIDEOSIZE_Y(frame->request)))
|
2242 |
|
|
{
|
2243 |
|
|
err("Error: ip=%d. in=%d. req.height=%ld.",
|
2244 |
|
|
ip, in, VIDEOSIZE_Y(frame->request));
|
2245 |
|
|
break;
|
2246 |
|
|
}
|
2247 |
|
|
|
2248 |
|
|
/* Now we need to average lines 'ip' and 'in' to produce line 'i' */
|
2249 |
|
|
fs1 = frame->data + (v4l_linesize * ip);
|
2250 |
|
|
fs2 = frame->data + (v4l_linesize * in);
|
2251 |
|
|
fd = frame->data + (v4l_linesize * i);
|
2252 |
|
|
|
2253 |
|
|
/* Average lines around destination */
|
2254 |
|
|
for (j=0; j < v4l_linesize; j++) {
|
2255 |
|
|
fd[j] = (unsigned char)((((unsigned) fs1[j]) +
|
2256 |
|
|
((unsigned)fs2[j])) >> 1);
|
2257 |
|
|
}
|
2258 |
|
|
}
|
2259 |
|
|
}
|
2260 |
|
|
|
2261 |
|
|
/* Optionally display statistics on the screen */
|
2262 |
|
|
if (uvd->flags & FLAGS_OVERLAY_STATS)
|
2263 |
|
|
usbvideo_OverlayStats(uvd, frame);
|
2264 |
|
|
}
|
2265 |
|
|
|
2266 |
|
|
/*
|
2267 |
|
|
* usbvideo_SoftwareContrastAdjustment()
|
2268 |
|
|
*
|
2269 |
|
|
* This code adjusts the contrast of the frame, assuming RGB24 format.
|
2270 |
|
|
* As most software image processing, this job is CPU-intensive.
|
2271 |
|
|
* Get a camera that supports hardware adjustment!
|
2272 |
|
|
*
|
2273 |
|
|
* History:
|
2274 |
|
|
* 09-Feb-2001 Created.
|
2275 |
|
|
*/
|
2276 |
|
|
void usbvideo_SoftwareContrastAdjustment(struct uvd *uvd, struct usbvideo_frame *frame)
|
2277 |
|
|
{
|
2278 |
|
|
int i, j, v4l_linesize;
|
2279 |
|
|
signed long adj;
|
2280 |
|
|
const int ccm = 128; /* Color correction median - see below */
|
2281 |
|
|
|
2282 |
|
|
if ((uvd == NULL) || (frame == NULL)) {
|
2283 |
|
|
err("%s: Illegal call.", __FUNCTION__);
|
2284 |
|
|
return;
|
2285 |
|
|
}
|
2286 |
|
|
adj = (uvd->vpic.contrast - 0x8000) >> 8; /* -128..+127 = -ccm..+(ccm-1)*/
|
2287 |
|
|
RESTRICT_TO_RANGE(adj, -ccm, ccm+1);
|
2288 |
|
|
if (adj == 0) {
|
2289 |
|
|
/* In rare case of no adjustment */
|
2290 |
|
|
return;
|
2291 |
|
|
}
|
2292 |
|
|
v4l_linesize = VIDEOSIZE_X(frame->request) * V4L_BYTES_PER_PIXEL;
|
2293 |
|
|
for (i=0; i < VIDEOSIZE_Y(frame->request); i++) {
|
2294 |
|
|
unsigned char *fd = frame->data + (v4l_linesize * i);
|
2295 |
|
|
for (j=0; j < v4l_linesize; j++) {
|
2296 |
|
|
signed long v = (signed long) fd[j];
|
2297 |
|
|
/* Magnify up to 2 times, reduce down to zero */
|
2298 |
|
|
v = 128 + ((ccm + adj) * (v - 128)) / ccm;
|
2299 |
|
|
RESTRICT_TO_RANGE(v, 0, 0xFF); /* Must flatten tails */
|
2300 |
|
|
fd[j] = (unsigned char) v;
|
2301 |
|
|
}
|
2302 |
|
|
}
|
2303 |
|
|
}
|
2304 |
|
|
|
2305 |
|
|
/*
|
2306 |
|
|
* /proc interface
|
2307 |
|
|
*
|
2308 |
|
|
* We will be creating directories and entries under /proc/video using
|
2309 |
|
|
* external 'video_proc_entry' directory which is exported by videodev.o
|
2310 |
|
|
* module. Within that directory we will create $driver/ directory to
|
2311 |
|
|
* uniquely and uniformly refer to our specific $driver. Within that
|
2312 |
|
|
* directory we will finally create an entry that is named after the
|
2313 |
|
|
* video device node - video3, for example. The format of that file
|
2314 |
|
|
* is determined by callbacks that the minidriver may provide. If no
|
2315 |
|
|
* callbacks are provided (neither read nor write) then we don't create
|
2316 |
|
|
* the entry.
|
2317 |
|
|
*
|
2318 |
|
|
* Here is a sample directory entry: /proc/video/ibmcam/video3
|
2319 |
|
|
*
|
2320 |
|
|
* The "file" video3 (in example above) is readable and writeable, in
|
2321 |
|
|
* theory. If the minidriver provides callbacks to do reading and
|
2322 |
|
|
* writing then both those procedures are supported. However if the
|
2323 |
|
|
* driver leaves callbacks in default (NULL) state the default
|
2324 |
|
|
* read and write handlers are used. The default read handler reports
|
2325 |
|
|
* that the driver does not support /proc fs. The default write handler
|
2326 |
|
|
* returns error code on any write attempt.
|
2327 |
|
|
*/
|
2328 |
|
|
|
2329 |
|
|
#if USES_PROC_FS
|
2330 |
|
|
|
2331 |
|
|
extern struct proc_dir_entry *video_proc_entry;
|
2332 |
|
|
|
2333 |
|
|
static void usbvideo_procfs_level1_create(struct usbvideo *ut)
|
2334 |
|
|
{
|
2335 |
|
|
if (ut == NULL) {
|
2336 |
|
|
err("%s: ut == NULL", __FUNCTION__);
|
2337 |
|
|
return;
|
2338 |
|
|
}
|
2339 |
|
|
if (video_proc_entry == NULL) {
|
2340 |
|
|
err("%s: /proc/video/ doesn't exist.", __FUNCTION__);
|
2341 |
|
|
return;
|
2342 |
|
|
}
|
2343 |
|
|
ut->procfs_dEntry = create_proc_entry(ut->drvName, S_IFDIR, video_proc_entry);
|
2344 |
|
|
if (ut->procfs_dEntry != NULL) {
|
2345 |
|
|
if (ut->md_module != NULL)
|
2346 |
|
|
ut->procfs_dEntry->owner = ut->md_module;
|
2347 |
|
|
} else {
|
2348 |
|
|
err("%s: Unable to initialize /proc/video/%s", __FUNCTION__, ut->drvName);
|
2349 |
|
|
}
|
2350 |
|
|
}
|
2351 |
|
|
|
2352 |
|
|
static void usbvideo_procfs_level1_destroy(struct usbvideo *ut)
|
2353 |
|
|
{
|
2354 |
|
|
if (ut == NULL) {
|
2355 |
|
|
err("%s: ut == NULL", __FUNCTION__);
|
2356 |
|
|
return;
|
2357 |
|
|
}
|
2358 |
|
|
if (ut->procfs_dEntry != NULL) {
|
2359 |
|
|
remove_proc_entry(ut->drvName, video_proc_entry);
|
2360 |
|
|
ut->procfs_dEntry = NULL;
|
2361 |
|
|
}
|
2362 |
|
|
}
|
2363 |
|
|
|
2364 |
|
|
static void usbvideo_procfs_level2_create(struct uvd *uvd)
|
2365 |
|
|
{
|
2366 |
|
|
if (uvd == NULL) {
|
2367 |
|
|
err("%s: uvd == NULL", __FUNCTION__);
|
2368 |
|
|
return;
|
2369 |
|
|
}
|
2370 |
|
|
assert(uvd->handle != NULL);
|
2371 |
|
|
if (uvd->handle->procfs_dEntry == NULL) {
|
2372 |
|
|
err("%s: uvd->handle->procfs_dEntry == NULL", __FUNCTION__);
|
2373 |
|
|
return;
|
2374 |
|
|
}
|
2375 |
|
|
|
2376 |
|
|
sprintf(uvd->videoName, "video%d", uvd->vdev.minor);
|
2377 |
|
|
uvd->procfs_vEntry = create_proc_entry(
|
2378 |
|
|
uvd->videoName,
|
2379 |
|
|
S_IFREG | S_IRUGO | S_IWUSR,
|
2380 |
|
|
uvd->handle->procfs_dEntry);
|
2381 |
|
|
if (uvd->procfs_vEntry != NULL) {
|
2382 |
|
|
uvd->procfs_vEntry->data = uvd;
|
2383 |
|
|
uvd->procfs_vEntry->read_proc = uvd->handle->cb.procfs_read;
|
2384 |
|
|
uvd->procfs_vEntry->write_proc = uvd->handle->cb.procfs_write;
|
2385 |
|
|
} else {
|
2386 |
|
|
err("%s: Failed to create entry \"%s\"", __FUNCTION__, uvd->videoName);
|
2387 |
|
|
}
|
2388 |
|
|
}
|
2389 |
|
|
|
2390 |
|
|
static void usbvideo_procfs_level2_destroy(struct uvd *uvd)
|
2391 |
|
|
{
|
2392 |
|
|
if (uvd == NULL) {
|
2393 |
|
|
err("%s: uvd == NULL", __FUNCTION__);
|
2394 |
|
|
return;
|
2395 |
|
|
}
|
2396 |
|
|
if (uvd->procfs_vEntry != NULL) {
|
2397 |
|
|
remove_proc_entry(uvd->videoName, uvd->procfs_vEntry);
|
2398 |
|
|
uvd->procfs_vEntry = NULL;
|
2399 |
|
|
}
|
2400 |
|
|
}
|
2401 |
|
|
|
2402 |
|
|
static int usbvideo_default_procfs_read_proc(
|
2403 |
|
|
char *page, char **start, off_t off, int count,
|
2404 |
|
|
int *eof, void *data)
|
2405 |
|
|
{
|
2406 |
|
|
char *out = page;
|
2407 |
|
|
int len;
|
2408 |
|
|
|
2409 |
|
|
/* Stay under PAGE_SIZE or else */
|
2410 |
|
|
out += sprintf(out, "This driver does not support /proc services.\n");
|
2411 |
|
|
len = out - page;
|
2412 |
|
|
len -= off;
|
2413 |
|
|
if (len < count) {
|
2414 |
|
|
*eof = 1;
|
2415 |
|
|
if (len <= 0)
|
2416 |
|
|
return 0;
|
2417 |
|
|
} else
|
2418 |
|
|
len = count;
|
2419 |
|
|
*start = page + off;
|
2420 |
|
|
return len;
|
2421 |
|
|
}
|
2422 |
|
|
|
2423 |
|
|
static int usbvideo_default_procfs_write_proc(
|
2424 |
|
|
struct file *file, const char *buffer,
|
2425 |
|
|
unsigned long count, void *data)
|
2426 |
|
|
{
|
2427 |
|
|
return -EINVAL;
|
2428 |
|
|
}
|
2429 |
|
|
|
2430 |
|
|
#endif /* USES_PROC_FS */
|
2431 |
|
|
MODULE_LICENSE("GPL");
|