From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 03:47:29 +0200 Subject: Adding upstream version 115.8.0esr. Signed-off-by: Daniel Baumann --- media/ffvpx/libavcodec/pthread_slice.c | 260 +++++++++++++++++++++++++++++++++ 1 file changed, 260 insertions(+) create mode 100644 media/ffvpx/libavcodec/pthread_slice.c (limited to 'media/ffvpx/libavcodec/pthread_slice.c') diff --git a/media/ffvpx/libavcodec/pthread_slice.c b/media/ffvpx/libavcodec/pthread_slice.c new file mode 100644 index 0000000000..a4d31c6f4d --- /dev/null +++ b/media/ffvpx/libavcodec/pthread_slice.c @@ -0,0 +1,260 @@ +/* + * 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 + */ + +/** + * @file + * Slice multithreading support functions + * @see doc/multithreading.txt + */ + +#include "config.h" + +#include "avcodec.h" +#include "codec_internal.h" +#include "internal.h" +#include "pthread_internal.h" +#include "thread.h" + +#include "libavutil/avassert.h" +#include "libavutil/common.h" +#include "libavutil/cpu.h" +#include "libavutil/mem.h" +#include "libavutil/thread.h" +#include "libavutil/slicethread.h" + +typedef int (action_func)(AVCodecContext *c, void *arg); +typedef int (action_func2)(AVCodecContext *c, void *arg, int jobnr, int threadnr); +typedef int (main_func)(AVCodecContext *c); + +typedef struct Progress { + pthread_cond_t cond; + pthread_mutex_t mutex; +} Progress; + +typedef struct SliceThreadContext { + AVSliceThread *thread; + action_func *func; + action_func2 *func2; + main_func *mainfunc; + void *args; + int *rets; + int job_size; + + int *entries; + int entries_count; + int thread_count; + Progress *progress; +} SliceThreadContext; + +static void main_function(void *priv) { + AVCodecContext *avctx = priv; + SliceThreadContext *c = avctx->internal->thread_ctx; + c->mainfunc(avctx); +} + +static void worker_func(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads) +{ + AVCodecContext *avctx = priv; + SliceThreadContext *c = avctx->internal->thread_ctx; + int ret; + + ret = c->func ? c->func(avctx, (char *)c->args + c->job_size * jobnr) + : c->func2(avctx, c->args, jobnr, threadnr); + if (c->rets) + c->rets[jobnr] = ret; +} + +void ff_slice_thread_free(AVCodecContext *avctx) +{ + SliceThreadContext *c = avctx->internal->thread_ctx; + int i; + + avpriv_slicethread_free(&c->thread); + + for (i = 0; i < c->thread_count; i++) { + Progress *const progress = &c->progress[i]; + pthread_mutex_destroy(&progress->mutex); + pthread_cond_destroy(&progress->cond); + } + + av_freep(&c->entries); + av_freep(&c->progress); + av_freep(&avctx->internal->thread_ctx); +} + +static int thread_execute(AVCodecContext *avctx, action_func* func, void *arg, int *ret, int job_count, int job_size) +{ + SliceThreadContext *c = avctx->internal->thread_ctx; + + if (!(avctx->active_thread_type&FF_THREAD_SLICE) || avctx->thread_count <= 1) + return avcodec_default_execute(avctx, func, arg, ret, job_count, job_size); + + if (job_count <= 0) + return 0; + + c->job_size = job_size; + c->args = arg; + c->func = func; + c->rets = ret; + + avpriv_slicethread_execute(c->thread, job_count, !!c->mainfunc ); + return 0; +} + +static int thread_execute2(AVCodecContext *avctx, action_func2* func2, void *arg, int *ret, int job_count) +{ + SliceThreadContext *c = avctx->internal->thread_ctx; + c->func2 = func2; + return thread_execute(avctx, NULL, arg, ret, job_count, 0); +} + +int ff_slice_thread_execute_with_mainfunc(AVCodecContext *avctx, action_func2* func2, main_func *mainfunc, void *arg, int *ret, int job_count) +{ + SliceThreadContext *c = avctx->internal->thread_ctx; + c->func2 = func2; + c->mainfunc = mainfunc; + return thread_execute(avctx, NULL, arg, ret, job_count, 0); +} + +int ff_slice_thread_init(AVCodecContext *avctx) +{ + SliceThreadContext *c; + int thread_count = avctx->thread_count; + void (*mainfunc)(void *); + + // We cannot do this in the encoder init as the threads are created before + if (av_codec_is_encoder(avctx->codec) && + avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && + avctx->height > 2800) + thread_count = avctx->thread_count = 1; + + if (!thread_count) { + int nb_cpus = av_cpu_count(); + if (avctx->height) + nb_cpus = FFMIN(nb_cpus, (avctx->height+15)/16); + // use number of cores + 1 as thread count if there is more than one + if (nb_cpus > 1) + thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS); + else + thread_count = avctx->thread_count = 1; + } + + if (thread_count <= 1) { + avctx->active_thread_type = 0; + return 0; + } + + avctx->internal->thread_ctx = c = av_mallocz(sizeof(*c)); + mainfunc = ffcodec(avctx->codec)->caps_internal & FF_CODEC_CAP_SLICE_THREAD_HAS_MF ? &main_function : NULL; + if (!c || (thread_count = avpriv_slicethread_create(&c->thread, avctx, worker_func, mainfunc, thread_count)) <= 1) { + if (c) + avpriv_slicethread_free(&c->thread); + av_freep(&avctx->internal->thread_ctx); + avctx->thread_count = 1; + avctx->active_thread_type = 0; + return 0; + } + avctx->thread_count = thread_count; + + avctx->execute = thread_execute; + avctx->execute2 = thread_execute2; + return 0; +} + +int av_cold ff_slice_thread_init_progress(AVCodecContext *avctx) +{ + SliceThreadContext *const p = avctx->internal->thread_ctx; + int err, i = 0, thread_count = avctx->thread_count; + + p->progress = av_calloc(thread_count, sizeof(*p->progress)); + if (!p->progress) { + err = AVERROR(ENOMEM); + goto fail; + } + + for (; i < thread_count; i++) { + Progress *const progress = &p->progress[i]; + err = pthread_mutex_init(&progress->mutex, NULL); + if (err) { + err = AVERROR(err); + goto fail; + } + err = pthread_cond_init (&progress->cond, NULL); + if (err) { + err = AVERROR(err); + pthread_mutex_destroy(&progress->mutex); + goto fail; + } + } + err = 0; +fail: + p->thread_count = i; + return err; +} + +void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n) +{ + SliceThreadContext *p = avctx->internal->thread_ctx; + Progress *const progress = &p->progress[thread]; + int *entries = p->entries; + + pthread_mutex_lock(&progress->mutex); + entries[field] +=n; + pthread_cond_signal(&progress->cond); + pthread_mutex_unlock(&progress->mutex); +} + +void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift) +{ + SliceThreadContext *p = avctx->internal->thread_ctx; + Progress *progress; + int *entries = p->entries; + + if (!entries || !field) return; + + thread = thread ? thread - 1 : p->thread_count - 1; + progress = &p->progress[thread]; + + pthread_mutex_lock(&progress->mutex); + while ((entries[field - 1] - entries[field]) < shift){ + pthread_cond_wait(&progress->cond, &progress->mutex); + } + pthread_mutex_unlock(&progress->mutex); +} + +int ff_slice_thread_allocz_entries(AVCodecContext *avctx, int count) +{ + if (avctx->active_thread_type & FF_THREAD_SLICE) { + SliceThreadContext *p = avctx->internal->thread_ctx; + + if (p->entries_count == count) { + memset(p->entries, 0, p->entries_count * sizeof(*p->entries)); + return 0; + } + av_freep(&p->entries); + + p->entries = av_calloc(count, sizeof(*p->entries)); + if (!p->entries) { + p->entries_count = 0; + return AVERROR(ENOMEM); + } + p->entries_count = count; + } + + return 0; +} -- cgit v1.2.3