2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 * Frame multithreading support functions
22 * @see doc/multithreading.txt
31 #include "pthread_internal.h"
35 #include "libavutil/avassert.h"
36 #include "libavutil/buffer.h"
37 #include "libavutil/common.h"
38 #include "libavutil/cpu.h"
39 #include "libavutil/frame.h"
40 #include "libavutil/internal.h"
41 #include "libavutil/log.h"
42 #include "libavutil/mem.h"
43 #include "libavutil/opt.h"
44 #include "libavutil/thread.h"
47 * Context used by codec threads and stored in their AVCodecInternal thread_ctx.
49 typedef struct PerThreadContext {
50 struct FrameThreadContext *parent;
54 pthread_cond_t input_cond; ///< Used to wait for a new packet from the main thread.
55 pthread_cond_t progress_cond; ///< Used by child threads to wait for progress to change.
56 pthread_cond_t output_cond; ///< Used by the main thread to wait for frames to finish.
58 pthread_mutex_t mutex; ///< Mutex used to protect the contents of the PerThreadContext.
59 pthread_mutex_t progress_mutex; ///< Mutex used to protect frame progress values and progress_cond.
61 AVCodecContext *avctx; ///< Context used to decode packets passed to this thread.
63 AVPacket avpkt; ///< Input packet (for decoding) or output (for encoding).
65 AVFrame *frame; ///< Output frame (for decoding) or input (for encoding).
66 int got_frame; ///< The output of got_picture_ptr from the last avcodec_decode_video() call.
67 int result; ///< The result of the last codec decode/encode() call.
70 STATE_INPUT_READY, ///< Set when the thread is awaiting a packet.
71 STATE_SETTING_UP, ///< Set before the codec has called ff_thread_finish_setup().
72 STATE_GET_BUFFER, /**<
73 * Set when the codec calls get_buffer().
74 * State is returned to STATE_SETTING_UP afterwards.
76 STATE_GET_FORMAT, /**<
77 * Set when the codec calls get_format().
78 * State is returned to STATE_SETTING_UP afterwards.
80 STATE_SETUP_FINISHED ///< Set after the codec has called ff_thread_finish_setup().
84 * Array of frames passed to ff_thread_release_buffer().
85 * Frames are released after all threads referencing them are finished.
87 AVFrame *released_buffers;
88 int num_released_buffers;
89 int released_buffers_allocated;
91 AVFrame *requested_frame; ///< AVFrame the codec passed to get_buffer()
92 int requested_flags; ///< flags passed to get_buffer() for requested_frame
94 const enum AVPixelFormat *available_formats; ///< Format array for get_format()
95 enum AVPixelFormat result_format; ///< get_format() result
97 int die; ///< Set when the thread should exit.
101 * Context stored in the client AVCodecInternal thread_ctx.
103 typedef struct FrameThreadContext {
104 PerThreadContext *threads; ///< The contexts for each thread.
105 PerThreadContext *prev_thread; ///< The last thread submit_packet() was called on.
107 pthread_mutex_t buffer_mutex; ///< Mutex used to protect get/release_buffer().
109 int next_decoding; ///< The next context to submit a packet to.
110 int next_finished; ///< The next context to return output from.
113 * Set for the first N packets, where N is the number of threads.
114 * While it is set, ff_thread_en/decode_frame won't return any results.
116 } FrameThreadContext;
118 #define THREAD_SAFE_CALLBACKS(avctx) \
119 ((avctx)->thread_safe_callbacks || (avctx)->get_buffer2 == avcodec_default_get_buffer2)
122 * Codec worker thread.
124 * Automatically calls ff_thread_finish_setup() if the codec does
125 * not provide an update_thread_context method, or if the codec returns
128 static attribute_align_arg void *frame_worker_thread(void *arg)
130 PerThreadContext *p = arg;
131 AVCodecContext *avctx = p->avctx;
132 const AVCodec *codec = avctx->codec;
134 pthread_mutex_lock(&p->mutex);
136 while (p->state == STATE_INPUT_READY && !p->die)
137 pthread_cond_wait(&p->input_cond, &p->mutex);
141 if (!codec->update_thread_context && THREAD_SAFE_CALLBACKS(avctx))
142 ff_thread_finish_setup(avctx);
144 av_frame_unref(p->frame);
146 p->result = codec->decode(avctx, p->frame, &p->got_frame, &p->avpkt);
148 if ((p->result < 0 || !p->got_frame) && p->frame->buf[0]) {
149 if (avctx->internal->allocate_progress)
150 av_log(avctx, AV_LOG_ERROR, "A frame threaded decoder did not "
151 "free the frame on failure. This is a bug, please report it.\n");
152 av_frame_unref(p->frame);
155 if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx);
157 pthread_mutex_lock(&p->progress_mutex);
159 for (i = 0; i < MAX_BUFFERS; i++)
160 if (p->progress_used[i] && (p->got_frame || p->result<0 || avctx->codec_id != AV_CODEC_ID_H264)) {
161 p->progress[i][0] = INT_MAX;
162 p->progress[i][1] = INT_MAX;
165 p->state = STATE_INPUT_READY;
167 pthread_cond_broadcast(&p->progress_cond);
168 pthread_cond_signal(&p->output_cond);
169 pthread_mutex_unlock(&p->progress_mutex);
171 pthread_mutex_unlock(&p->mutex);
177 * Update the next thread's AVCodecContext with values from the reference thread's context.
179 * @param dst The destination context.
180 * @param src The source context.
181 * @param for_user 0 if the destination is a codec thread, 1 if the destination is the user's thread
182 * @return 0 on success, negative error code on failure
184 static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src, int for_user)
189 dst->time_base = src->time_base;
190 dst->framerate = src->framerate;
191 dst->width = src->width;
192 dst->height = src->height;
193 dst->pix_fmt = src->pix_fmt;
195 dst->coded_width = src->coded_width;
196 dst->coded_height = src->coded_height;
198 dst->has_b_frames = src->has_b_frames;
199 dst->idct_algo = src->idct_algo;
201 dst->bits_per_coded_sample = src->bits_per_coded_sample;
202 dst->sample_aspect_ratio = src->sample_aspect_ratio;
204 FF_DISABLE_DEPRECATION_WARNINGS
205 dst->dtg_active_format = src->dtg_active_format;
206 FF_ENABLE_DEPRECATION_WARNINGS
207 #endif /* FF_API_AFD */
209 dst->profile = src->profile;
210 dst->level = src->level;
212 dst->bits_per_raw_sample = src->bits_per_raw_sample;
213 dst->ticks_per_frame = src->ticks_per_frame;
214 dst->color_primaries = src->color_primaries;
216 dst->color_trc = src->color_trc;
217 dst->colorspace = src->colorspace;
218 dst->color_range = src->color_range;
219 dst->chroma_sample_location = src->chroma_sample_location;
221 dst->hwaccel = src->hwaccel;
222 dst->hwaccel_context = src->hwaccel_context;
224 dst->channels = src->channels;
225 dst->sample_rate = src->sample_rate;
226 dst->sample_fmt = src->sample_fmt;
227 dst->channel_layout = src->channel_layout;
228 dst->internal->hwaccel_priv_data = src->internal->hwaccel_priv_data;
232 dst->delay = src->thread_count - 1;
233 #if FF_API_CODED_FRAME
234 FF_DISABLE_DEPRECATION_WARNINGS
235 dst->coded_frame = src->coded_frame;
236 FF_ENABLE_DEPRECATION_WARNINGS
239 if (dst->codec->update_thread_context)
240 err = dst->codec->update_thread_context(dst, src);
247 * Update the next thread's AVCodecContext with values set by the user.
249 * @param dst The destination context.
250 * @param src The source context.
251 * @return 0 on success, negative error code on failure
253 static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
255 #define copy_fields(s, e) memcpy(&dst->s, &src->s, (char*)&dst->e - (char*)&dst->s);
256 dst->flags = src->flags;
258 dst->draw_horiz_band= src->draw_horiz_band;
259 dst->get_buffer2 = src->get_buffer2;
261 dst->opaque = src->opaque;
262 dst->debug = src->debug;
263 dst->debug_mv = src->debug_mv;
265 dst->slice_flags = src->slice_flags;
266 dst->flags2 = src->flags2;
268 copy_fields(skip_loop_filter, subtitle_header);
270 dst->frame_number = src->frame_number;
271 dst->reordered_opaque = src->reordered_opaque;
272 dst->thread_safe_callbacks = src->thread_safe_callbacks;
274 if (src->slice_count && src->slice_offset) {
275 if (dst->slice_count < src->slice_count) {
276 int err = av_reallocp_array(&dst->slice_offset, src->slice_count,
277 sizeof(*dst->slice_offset));
281 memcpy(dst->slice_offset, src->slice_offset,
282 src->slice_count * sizeof(*dst->slice_offset));
284 dst->slice_count = src->slice_count;
289 /// Releases the buffers that this decoding thread was the last user of.
290 static void release_delayed_buffers(PerThreadContext *p)
292 FrameThreadContext *fctx = p->parent;
294 while (p->num_released_buffers > 0) {
297 pthread_mutex_lock(&fctx->buffer_mutex);
299 // fix extended data in case the caller screwed it up
300 av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
301 p->avctx->codec_type == AVMEDIA_TYPE_AUDIO);
302 f = &p->released_buffers[--p->num_released_buffers];
303 f->extended_data = f->data;
306 pthread_mutex_unlock(&fctx->buffer_mutex);
310 static int submit_packet(PerThreadContext *p, AVPacket *avpkt)
312 FrameThreadContext *fctx = p->parent;
313 PerThreadContext *prev_thread = fctx->prev_thread;
314 const AVCodec *codec = p->avctx->codec;
317 if (!avpkt->size && !(codec->capabilities & AV_CODEC_CAP_DELAY))
320 pthread_mutex_lock(&p->mutex);
322 release_delayed_buffers(p);
326 if (prev_thread->state == STATE_SETTING_UP) {
327 pthread_mutex_lock(&prev_thread->progress_mutex);
328 while (prev_thread->state == STATE_SETTING_UP)
329 pthread_cond_wait(&prev_thread->progress_cond, &prev_thread->progress_mutex);
330 pthread_mutex_unlock(&prev_thread->progress_mutex);
333 err = update_context_from_thread(p->avctx, prev_thread->avctx, 0);
335 pthread_mutex_unlock(&p->mutex);
340 av_packet_unref(&p->avpkt);
341 ret = av_packet_ref(&p->avpkt, avpkt);
343 pthread_mutex_unlock(&p->mutex);
344 av_log(p->avctx, AV_LOG_ERROR, "av_packet_ref() failed in submit_packet()\n");
348 p->state = STATE_SETTING_UP;
349 pthread_cond_signal(&p->input_cond);
350 pthread_mutex_unlock(&p->mutex);
353 * If the client doesn't have a thread-safe get_buffer(),
354 * then decoding threads call back to the main thread,
355 * and it calls back to the client here.
358 if (!p->avctx->thread_safe_callbacks && (
359 p->avctx->get_format != avcodec_default_get_format ||
360 p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
361 while (p->state != STATE_SETUP_FINISHED && p->state != STATE_INPUT_READY) {
363 pthread_mutex_lock(&p->progress_mutex);
364 while (p->state == STATE_SETTING_UP)
365 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
368 case STATE_GET_BUFFER:
369 p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
371 case STATE_GET_FORMAT:
372 p->result_format = ff_get_format(p->avctx, p->available_formats);
379 p->state = STATE_SETTING_UP;
380 pthread_cond_signal(&p->progress_cond);
382 pthread_mutex_unlock(&p->progress_mutex);
386 fctx->prev_thread = p;
387 fctx->next_decoding++;
392 int ff_thread_decode_frame(AVCodecContext *avctx,
393 AVFrame *picture, int *got_picture_ptr,
396 FrameThreadContext *fctx = avctx->internal->thread_ctx;
397 int finished = fctx->next_finished;
402 * Submit a packet to the next decoding thread.
405 p = &fctx->threads[fctx->next_decoding];
406 err = update_context_from_user(p->avctx, avctx);
408 err = submit_packet(p, avpkt);
412 * If we're still receiving the initial packets, don't return a frame.
415 if (fctx->next_decoding > (avctx->thread_count-1-(avctx->codec_id == AV_CODEC_ID_FFV1)))
418 if (fctx->delaying) {
425 * Return the next available frame from the oldest thread.
426 * If we're at the end of the stream, then we have to skip threads that
427 * didn't output a frame, because we don't want to accidentally signal
428 * EOF (avpkt->size == 0 && *got_picture_ptr == 0).
432 p = &fctx->threads[finished++];
434 if (p->state != STATE_INPUT_READY) {
435 pthread_mutex_lock(&p->progress_mutex);
436 while (p->state != STATE_INPUT_READY)
437 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
438 pthread_mutex_unlock(&p->progress_mutex);
441 av_frame_move_ref(picture, p->frame);
442 *got_picture_ptr = p->got_frame;
443 picture->pkt_dts = p->avpkt.dts;
449 * A later call with avkpt->size == 0 may loop over all threads,
450 * including this one, searching for a frame to return before being
451 * stopped by the "finished != fctx->next_finished" condition.
452 * Make sure we don't mistakenly return the same frame again.
456 if (finished >= avctx->thread_count) finished = 0;
457 } while (!avpkt->size && !*got_picture_ptr && finished != fctx->next_finished);
459 update_context_from_thread(avctx, p->avctx, 1);
461 if (fctx->next_decoding >= avctx->thread_count) fctx->next_decoding = 0;
463 fctx->next_finished = finished;
466 * When no frame was found while flushing, but an error occurred in
467 * any thread, return it instead of 0.
468 * Otherwise the error can get lost.
470 if (!avpkt->size && !*got_picture_ptr)
473 /* return the size of the consumed packet if no error occurred */
474 return (p->result >= 0) ? avpkt->size : p->result;
477 void ff_thread_report_progress(ThreadFrame *f, int n, int field)
480 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
482 if (!progress || progress[field] >= n) return;
484 p = f->owner->internal->thread_ctx;
486 if (f->owner->debug&FF_DEBUG_THREADS)
487 av_log(f->owner, AV_LOG_DEBUG, "%p finished %d field %d\n", progress, n, field);
489 pthread_mutex_lock(&p->progress_mutex);
491 pthread_cond_broadcast(&p->progress_cond);
492 pthread_mutex_unlock(&p->progress_mutex);
495 void ff_thread_await_progress(ThreadFrame *f, int n, int field)
498 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
500 if (!progress || progress[field] >= n) return;
502 p = f->owner->internal->thread_ctx;
504 if (f->owner->debug&FF_DEBUG_THREADS)
505 av_log(f->owner, AV_LOG_DEBUG, "thread awaiting %d field %d from %p\n", n, field, progress);
507 pthread_mutex_lock(&p->progress_mutex);
508 while (progress[field] < n)
509 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
510 pthread_mutex_unlock(&p->progress_mutex);
513 void ff_thread_finish_setup(AVCodecContext *avctx) {
514 PerThreadContext *p = avctx->internal->thread_ctx;
516 if (!(avctx->active_thread_type&FF_THREAD_FRAME)) return;
518 pthread_mutex_lock(&p->progress_mutex);
519 if(p->state == STATE_SETUP_FINISHED){
520 av_log(avctx, AV_LOG_WARNING, "Multiple ff_thread_finish_setup() calls\n");
523 p->state = STATE_SETUP_FINISHED;
524 pthread_cond_broadcast(&p->progress_cond);
525 pthread_mutex_unlock(&p->progress_mutex);
528 /// Waits for all threads to finish.
529 static void park_frame_worker_threads(FrameThreadContext *fctx, int thread_count)
533 for (i = 0; i < thread_count; i++) {
534 PerThreadContext *p = &fctx->threads[i];
536 if (p->state != STATE_INPUT_READY) {
537 pthread_mutex_lock(&p->progress_mutex);
538 while (p->state != STATE_INPUT_READY)
539 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
540 pthread_mutex_unlock(&p->progress_mutex);
546 void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
548 FrameThreadContext *fctx = avctx->internal->thread_ctx;
549 const AVCodec *codec = avctx->codec;
552 park_frame_worker_threads(fctx, thread_count);
554 if (fctx->prev_thread && fctx->prev_thread != fctx->threads)
555 if (update_context_from_thread(fctx->threads->avctx, fctx->prev_thread->avctx, 0) < 0) {
556 av_log(avctx, AV_LOG_ERROR, "Final thread update failed\n");
557 fctx->prev_thread->avctx->internal->is_copy = fctx->threads->avctx->internal->is_copy;
558 fctx->threads->avctx->internal->is_copy = 1;
561 for (i = 0; i < thread_count; i++) {
562 PerThreadContext *p = &fctx->threads[i];
564 pthread_mutex_lock(&p->mutex);
566 pthread_cond_signal(&p->input_cond);
567 pthread_mutex_unlock(&p->mutex);
570 pthread_join(p->thread, NULL);
573 if (codec->close && p->avctx)
574 codec->close(p->avctx);
576 release_delayed_buffers(p);
577 av_frame_free(&p->frame);
580 for (i = 0; i < thread_count; i++) {
581 PerThreadContext *p = &fctx->threads[i];
583 pthread_mutex_destroy(&p->mutex);
584 pthread_mutex_destroy(&p->progress_mutex);
585 pthread_cond_destroy(&p->input_cond);
586 pthread_cond_destroy(&p->progress_cond);
587 pthread_cond_destroy(&p->output_cond);
588 av_packet_unref(&p->avpkt);
589 av_freep(&p->released_buffers);
592 av_freep(&p->avctx->priv_data);
593 av_freep(&p->avctx->slice_offset);
597 av_freep(&p->avctx->internal);
601 av_freep(&fctx->threads);
602 pthread_mutex_destroy(&fctx->buffer_mutex);
603 av_freep(&avctx->internal->thread_ctx);
605 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
606 av_opt_free(avctx->priv_data);
610 int ff_frame_thread_init(AVCodecContext *avctx)
612 int thread_count = avctx->thread_count;
613 const AVCodec *codec = avctx->codec;
614 AVCodecContext *src = avctx;
615 FrameThreadContext *fctx;
623 int nb_cpus = av_cpu_count();
624 if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv)
626 // use number of cores + 1 as thread count if there is more than one
628 thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
630 thread_count = avctx->thread_count = 1;
633 if (thread_count <= 1) {
634 avctx->active_thread_type = 0;
638 avctx->internal->thread_ctx = fctx = av_mallocz(sizeof(FrameThreadContext));
640 return AVERROR(ENOMEM);
642 fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
643 if (!fctx->threads) {
644 av_freep(&avctx->internal->thread_ctx);
645 return AVERROR(ENOMEM);
648 pthread_mutex_init(&fctx->buffer_mutex, NULL);
651 for (i = 0; i < thread_count; i++) {
652 AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
653 PerThreadContext *p = &fctx->threads[i];
655 pthread_mutex_init(&p->mutex, NULL);
656 pthread_mutex_init(&p->progress_mutex, NULL);
657 pthread_cond_init(&p->input_cond, NULL);
658 pthread_cond_init(&p->progress_cond, NULL);
659 pthread_cond_init(&p->output_cond, NULL);
661 p->frame = av_frame_alloc();
664 err = AVERROR(ENOMEM);
672 err = AVERROR(ENOMEM);
678 copy->internal = av_malloc(sizeof(AVCodecInternal));
679 if (!copy->internal) {
680 copy->priv_data = NULL;
681 err = AVERROR(ENOMEM);
684 *copy->internal = *src->internal;
685 copy->internal->thread_ctx = p;
686 copy->internal->pkt = &p->avpkt;
692 err = codec->init(copy);
694 update_context_from_thread(avctx, copy, 1);
696 copy->priv_data = av_malloc(codec->priv_data_size);
697 if (!copy->priv_data) {
698 err = AVERROR(ENOMEM);
701 memcpy(copy->priv_data, src->priv_data, codec->priv_data_size);
702 copy->internal->is_copy = 1;
704 if (codec->init_thread_copy)
705 err = codec->init_thread_copy(copy);
710 err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
711 p->thread_init= !err;
719 ff_frame_thread_free(avctx, i+1);
724 void ff_thread_flush(AVCodecContext *avctx)
727 FrameThreadContext *fctx = avctx->internal->thread_ctx;
731 park_frame_worker_threads(fctx, avctx->thread_count);
732 if (fctx->prev_thread) {
733 if (fctx->prev_thread != &fctx->threads[0])
734 update_context_from_thread(fctx->threads[0].avctx, fctx->prev_thread->avctx, 0);
737 fctx->next_decoding = fctx->next_finished = 0;
739 fctx->prev_thread = NULL;
740 for (i = 0; i < avctx->thread_count; i++) {
741 PerThreadContext *p = &fctx->threads[i];
742 // Make sure decode flush calls with size=0 won't return old frames
744 av_frame_unref(p->frame);
746 release_delayed_buffers(p);
748 if (avctx->codec->flush)
749 avctx->codec->flush(p->avctx);
753 int ff_thread_can_start_frame(AVCodecContext *avctx)
755 PerThreadContext *p = avctx->internal->thread_ctx;
756 if ((avctx->active_thread_type&FF_THREAD_FRAME) && p->state != STATE_SETTING_UP &&
757 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
763 static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags)
765 PerThreadContext *p = avctx->internal->thread_ctx;
770 ff_init_buffer_info(avctx, f->f);
772 if (!(avctx->active_thread_type & FF_THREAD_FRAME))
773 return ff_get_buffer(avctx, f->f, flags);
775 if (p->state != STATE_SETTING_UP &&
776 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
777 av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
781 if (avctx->internal->allocate_progress) {
783 f->progress = av_buffer_alloc(2 * sizeof(int));
785 return AVERROR(ENOMEM);
787 progress = (int*)f->progress->data;
789 progress[0] = progress[1] = -1;
792 pthread_mutex_lock(&p->parent->buffer_mutex);
793 if (avctx->thread_safe_callbacks ||
794 avctx->get_buffer2 == avcodec_default_get_buffer2) {
795 err = ff_get_buffer(avctx, f->f, flags);
797 pthread_mutex_lock(&p->progress_mutex);
798 p->requested_frame = f->f;
799 p->requested_flags = flags;
800 p->state = STATE_GET_BUFFER;
801 pthread_cond_broadcast(&p->progress_cond);
803 while (p->state != STATE_SETTING_UP)
804 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
808 pthread_mutex_unlock(&p->progress_mutex);
811 if (!THREAD_SAFE_CALLBACKS(avctx) && !avctx->codec->update_thread_context)
812 ff_thread_finish_setup(avctx);
814 av_buffer_unref(&f->progress);
816 pthread_mutex_unlock(&p->parent->buffer_mutex);
821 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
823 enum AVPixelFormat res;
824 PerThreadContext *p = avctx->internal->thread_ctx;
825 if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
826 avctx->get_format == avcodec_default_get_format)
827 return ff_get_format(avctx, fmt);
828 if (p->state != STATE_SETTING_UP) {
829 av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
832 pthread_mutex_lock(&p->progress_mutex);
833 p->available_formats = fmt;
834 p->state = STATE_GET_FORMAT;
835 pthread_cond_broadcast(&p->progress_cond);
837 while (p->state != STATE_SETTING_UP)
838 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
840 res = p->result_format;
842 pthread_mutex_unlock(&p->progress_mutex);
847 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
849 int ret = thread_get_buffer_internal(avctx, f, flags);
851 av_log(avctx, AV_LOG_ERROR, "thread_get_buffer() failed\n");
855 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
857 PerThreadContext *p = avctx->internal->thread_ctx;
858 FrameThreadContext *fctx;
860 int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
861 avctx->thread_safe_callbacks ||
862 avctx->get_buffer2 == avcodec_default_get_buffer2;
864 if (!f->f || !f->f->buf[0])
867 if (avctx->debug & FF_DEBUG_BUFFERS)
868 av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
870 av_buffer_unref(&f->progress);
873 if (can_direct_free) {
874 av_frame_unref(f->f);
879 pthread_mutex_lock(&fctx->buffer_mutex);
881 if (p->num_released_buffers + 1 >= INT_MAX / sizeof(*p->released_buffers))
883 tmp = av_fast_realloc(p->released_buffers, &p->released_buffers_allocated,
884 (p->num_released_buffers + 1) *
885 sizeof(*p->released_buffers));
888 p->released_buffers = tmp;
890 dst = &p->released_buffers[p->num_released_buffers];
891 av_frame_move_ref(dst, f->f);
893 p->num_released_buffers++;
896 pthread_mutex_unlock(&fctx->buffer_mutex);