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Frame-based multithreading framework using pthreads

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See doc/multithreading.txt for details on use in codecs.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Alexander Strange 2011-02-07 21:15:44 -05:00 • committed by Ronald S. Bultje
parent c2bd7578af
commit 37b00b47cb
11 changed files with 1068 additions and 12 deletions
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60
libavcodec/utils.c
View file

@ -37,6 +37,7 @@
#include "dsputil.h"
#include "libavutil/opt.h"
#include "imgconvert.h"
#include "thread.h"
#include "audioconvert.h"
#include "internal.h"
#include <stdlib.h>
@ -261,6 +262,11 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
(*picture_number)++;
if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
if(s->active_thread_type&FF_THREAD_FRAME) {
av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
return -1;
}
for(i=0; i<4; i++){
av_freep(&buf->base[i]);
buf->data[i]= NULL;
@ -532,13 +538,21 @@ int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
goto free_and_end;
}
avctx->frame_number = 0;
if (HAVE_THREADS && !avctx->thread_opaque) {
ret = avcodec_thread_init(avctx, avctx->thread_count);
if (ret < 0) {
goto free_and_end;
}
}
if (avctx->codec->max_lowres < avctx->lowres) {
av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
avctx->codec->max_lowres);
goto free_and_end;
}
if(avctx->codec->init){
if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
ret = avctx->codec->init(avctx);
if (ret < 0) {
goto free_and_end;
@ -636,14 +650,18 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
avctx->pkt = avpkt;
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
avpkt);
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
avpkt);
else {
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
avpkt);
picture->pkt_dts= avpkt->dts;
}
emms_c(); //needed to avoid an emms_c() call before every return;
picture->pkt_dts= avpkt->dts;
if (*got_picture_ptr)
avctx->frame_number++;
}else
@ -768,6 +786,7 @@ av_cold int avcodec_close(AVCodecContext *avctx)
if(avctx->codec && avctx->codec->encode)
av_freep(&avctx->extradata);
avctx->codec = NULL;
avctx->active_thread_type = 0;
entangled_thread_counter--;
/* Release any user-supplied mutex. */
@ -1029,6 +1048,8 @@ void avcodec_init(void)
void avcodec_flush_buffers(AVCodecContext *avctx)
{
if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
ff_thread_flush(avctx);
if(avctx->codec->flush)
avctx->codec->flush(avctx);
}
@ -1229,3 +1250,30 @@ unsigned int ff_toupper4(unsigned int x)
+ (toupper((x>>16)&0xFF)<<16)
+ (toupper((x>>24)&0xFF)<<24);
}
#if !HAVE_PTHREADS
int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
{
f->owner = avctx;
return avctx->get_buffer(avctx, f);
}
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
{
f->owner->release_buffer(f->owner, f);
}
void ff_thread_finish_setup(AVCodecContext *avctx)
{
}
void ff_thread_report_progress(AVFrame *f, int progress, int field)
{
}
void ff_thread_await_progress(AVFrame *f, int progress, int field)
{
}
#endif