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Diffstat (limited to 'contrib/ffmpeg/libavcodec/pthread.c')
-rw-r--r--contrib/ffmpeg/libavcodec/pthread.c170
1 files changed, 0 insertions, 170 deletions
diff --git a/contrib/ffmpeg/libavcodec/pthread.c b/contrib/ffmpeg/libavcodec/pthread.c
deleted file mode 100644
index f2c636bbe..000000000
--- a/contrib/ffmpeg/libavcodec/pthread.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * Copyright (c) 2004 Roman Shaposhnik.
- *
- * Many thanks to Steven M. Schultz for providing clever ideas and
- * to Michael Niedermayer <michaelni@gmx.at> for writing initial
- * implementation.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
-#include <pthread.h>
-
-#include "avcodec.h"
-#include "common.h"
-
-typedef int (action_t)(AVCodecContext *c, void *arg);
-
-typedef struct ThreadContext {
- pthread_t *workers;
- action_t *func;
- void **args;
- int *rets;
- int rets_count;
- int job_count;
-
- pthread_cond_t last_job_cond;
- pthread_cond_t current_job_cond;
- pthread_mutex_t current_job_lock;
- int current_job;
- int done;
-} ThreadContext;
-
-static void* worker(void *v)
-{
- AVCodecContext *avctx = v;
- ThreadContext *c = avctx->thread_opaque;
- int our_job = c->job_count;
- int thread_count = avctx->thread_count;
- int self_id;
-
- pthread_mutex_lock(&c->current_job_lock);
- self_id = c->current_job++;
- for (;;){
- while (our_job >= c->job_count) {
- if (c->current_job == thread_count + c->job_count)
- pthread_cond_signal(&c->last_job_cond);
-
- pthread_cond_wait(&c->current_job_cond, &c->current_job_lock);
- our_job = self_id;
-
- if (c->done) {
- pthread_mutex_unlock(&c->current_job_lock);
- return NULL;
- }
- }
- pthread_mutex_unlock(&c->current_job_lock);
-
- c->rets[our_job%c->rets_count] = c->func(avctx, c->args[our_job]);
-
- pthread_mutex_lock(&c->current_job_lock);
- our_job = c->current_job++;
- }
-}
-
-static av_always_inline void avcodec_thread_park_workers(ThreadContext *c, int thread_count)
-{
- pthread_cond_wait(&c->last_job_cond, &c->current_job_lock);
- pthread_mutex_unlock(&c->current_job_lock);
-}
-
-void avcodec_thread_free(AVCodecContext *avctx)
-{
- ThreadContext *c = avctx->thread_opaque;
- int i;
-
- pthread_mutex_lock(&c->current_job_lock);
- c->done = 1;
- pthread_cond_broadcast(&c->current_job_cond);
- pthread_mutex_unlock(&c->current_job_lock);
-
- for (i=0; i<avctx->thread_count; i++)
- pthread_join(c->workers[i], NULL);
-
- pthread_mutex_destroy(&c->current_job_lock);
- pthread_cond_destroy(&c->current_job_cond);
- pthread_cond_destroy(&c->last_job_cond);
- av_free(c->workers);
- av_free(c);
-}
-
-int avcodec_thread_execute(AVCodecContext *avctx, action_t* func, void **arg, int *ret, int job_count)
-{
- ThreadContext *c= avctx->thread_opaque;
- int dummy_ret;
-
- if (job_count <= 0)
- return 0;
-
- pthread_mutex_lock(&c->current_job_lock);
-
- c->current_job = avctx->thread_count;
- c->job_count = job_count;
- c->args = arg;
- c->func = func;
- if (ret) {
- c->rets = ret;
- c->rets_count = job_count;
- } else {
- c->rets = &dummy_ret;
- c->rets_count = 1;
- }
- pthread_cond_broadcast(&c->current_job_cond);
-
- avcodec_thread_park_workers(c, avctx->thread_count);
-
- return 0;
-}
-
-int avcodec_thread_init(AVCodecContext *avctx, int thread_count)
-{
- int i;
- ThreadContext *c;
-
- c = av_mallocz(sizeof(ThreadContext));
- if (!c)
- return -1;
-
- c->workers = av_mallocz(sizeof(pthread_t)*thread_count);
- if (!c->workers) {
- av_free(c);
- return -1;
- }
-
- avctx->thread_opaque = c;
- avctx->thread_count = thread_count;
- c->current_job = 0;
- c->job_count = 0;
- c->done = 0;
- pthread_cond_init(&c->current_job_cond, NULL);
- pthread_cond_init(&c->last_job_cond, NULL);
- pthread_mutex_init(&c->current_job_lock, NULL);
- pthread_mutex_lock(&c->current_job_lock);
- for (i=0; i<thread_count; i++) {
- if(pthread_create(&c->workers[i], NULL, worker, avctx)) {
- avctx->thread_count = i;
- pthread_mutex_unlock(&c->current_job_lock);
- avcodec_thread_free(avctx);
- return -1;
- }
- }
-
- avcodec_thread_park_workers(c, thread_count);
-
- avctx->execute = avcodec_thread_execute;
- return 0;
-}