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-rw-r--r--media/ffvpx/libavcodec/pthread_slice.c260
1 files changed, 260 insertions, 0 deletions
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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-17 11:03:57 +0000