diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/w32thread.c')
-rw-r--r-- | contrib/ffmpeg/libavcodec/w32thread.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/contrib/ffmpeg/libavcodec/w32thread.c b/contrib/ffmpeg/libavcodec/w32thread.c deleted file mode 100644 index e749a64af..000000000 --- a/contrib/ffmpeg/libavcodec/w32thread.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at> - * - * 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 - * - */ -//#define DEBUG - -#include "avcodec.h" -#include "common.h" - -#define WIN32_LEAN_AND_MEAN -#include <windows.h> -#include <process.h> - -typedef struct ThreadContext{ - AVCodecContext *avctx; - HANDLE thread; - HANDLE work_sem; - HANDLE done_sem; - int (*func)(AVCodecContext *c, void *arg); - void *arg; - int ret; -}ThreadContext; - - -static unsigned __stdcall thread_func(void *v){ - ThreadContext *c= v; - - for(;;){ -//printf("thread_func %X enter wait\n", (int)v); fflush(stdout); - WaitForSingleObject(c->work_sem, INFINITE); -//printf("thread_func %X after wait (func=%X)\n", (int)v, (int)c->func); fflush(stdout); - if(c->func) - c->ret= c->func(c->avctx, c->arg); - else - return 0; -//printf("thread_func %X signal complete\n", (int)v); fflush(stdout); - ReleaseSemaphore(c->done_sem, 1, 0); - } - - return 0; -} - -/** - * free what has been allocated by avcodec_thread_init(). - * must be called after decoding has finished, especially dont call while avcodec_thread_execute() is running - */ -void avcodec_thread_free(AVCodecContext *s){ - ThreadContext *c= s->thread_opaque; - int i; - - for(i=0; i<s->thread_count; i++){ - - c[i].func= NULL; - ReleaseSemaphore(c[i].work_sem, 1, 0); - WaitForSingleObject(c[i].thread, INFINITE); - if(c[i].work_sem) CloseHandle(c[i].work_sem); - if(c[i].done_sem) CloseHandle(c[i].done_sem); - } - - av_freep(&s->thread_opaque); -} - -int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){ - ThreadContext *c= s->thread_opaque; - int i; - - assert(s == c->avctx); - assert(count <= s->thread_count); - - /* note, we can be certain that this is not called with the same AVCodecContext by different threads at the same time */ - - for(i=0; i<count; i++){ - c[i].arg= arg[i]; - c[i].func= func; - c[i].ret= 12345; - - ReleaseSemaphore(c[i].work_sem, 1, 0); - } - for(i=0; i<count; i++){ - WaitForSingleObject(c[i].done_sem, INFINITE); - - c[i].func= NULL; - if(ret) ret[i]= c[i].ret; - } - return 0; -} - -int avcodec_thread_init(AVCodecContext *s, int thread_count){ - int i; - ThreadContext *c; - uint32_t threadid; - - s->thread_count= thread_count; - - assert(!s->thread_opaque); - c= av_mallocz(sizeof(ThreadContext)*thread_count); - s->thread_opaque= c; - - for(i=0; i<thread_count; i++){ -//printf("init semaphors %d\n", i); fflush(stdout); - c[i].avctx= s; - - if(!(c[i].work_sem = CreateSemaphore(NULL, 0, s->thread_count, NULL))) - goto fail; - if(!(c[i].done_sem = CreateSemaphore(NULL, 0, s->thread_count, NULL))) - goto fail; - -//printf("create thread %d\n", i); fflush(stdout); - c[i].thread = (HANDLE)_beginthreadex(NULL, 0, thread_func, &c[i], 0, &threadid ); - if( !c[i].thread ) goto fail; - } -//printf("init done\n"); fflush(stdout); - - s->execute= avcodec_thread_execute; - - return 0; -fail: - avcodec_thread_free(s); - return -1; -} |