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;
316 if (!avpkt->size && !(codec->capabilities & AV_CODEC_CAP_DELAY))
319 pthread_mutex_lock(&p->mutex);
321 release_delayed_buffers(p);
325 if (prev_thread->state == STATE_SETTING_UP) {
326 pthread_mutex_lock(&prev_thread->progress_mutex);
327 while (prev_thread->state == STATE_SETTING_UP)
328 pthread_cond_wait(&prev_thread->progress_cond, &prev_thread->progress_mutex);
329 pthread_mutex_unlock(&prev_thread->progress_mutex);
332 err = update_context_from_thread(p->avctx, prev_thread->avctx, 0);
334 pthread_mutex_unlock(&p->mutex);
339 av_packet_unref(&p->avpkt);
340 av_packet_ref(&p->avpkt, avpkt);
342 p->state = STATE_SETTING_UP;
343 pthread_cond_signal(&p->input_cond);
344 pthread_mutex_unlock(&p->mutex);
347 * If the client doesn't have a thread-safe get_buffer(),
348 * then decoding threads call back to the main thread,
349 * and it calls back to the client here.
352 if (!p->avctx->thread_safe_callbacks && (
353 p->avctx->get_format != avcodec_default_get_format ||
354 p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
355 while (p->state != STATE_SETUP_FINISHED && p->state != STATE_INPUT_READY) {
357 pthread_mutex_lock(&p->progress_mutex);
358 while (p->state == STATE_SETTING_UP)
359 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
362 case STATE_GET_BUFFER:
363 p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
365 case STATE_GET_FORMAT:
366 p->result_format = ff_get_format(p->avctx, p->available_formats);
373 p->state = STATE_SETTING_UP;
374 pthread_cond_signal(&p->progress_cond);
376 pthread_mutex_unlock(&p->progress_mutex);
380 fctx->prev_thread = p;
381 fctx->next_decoding++;
386 int ff_thread_decode_frame(AVCodecContext *avctx,
387 AVFrame *picture, int *got_picture_ptr,
390 FrameThreadContext *fctx = avctx->internal->thread_ctx;
391 int finished = fctx->next_finished;
396 * Submit a packet to the next decoding thread.
399 p = &fctx->threads[fctx->next_decoding];
400 err = update_context_from_user(p->avctx, avctx);
402 err = submit_packet(p, avpkt);
406 * If we're still receiving the initial packets, don't return a frame.
409 if (fctx->next_decoding > (avctx->thread_count-1-(avctx->codec_id == AV_CODEC_ID_FFV1)))
412 if (fctx->delaying) {
419 * Return the next available frame from the oldest thread.
420 * If we're at the end of the stream, then we have to skip threads that
421 * didn't output a frame, because we don't want to accidentally signal
422 * EOF (avpkt->size == 0 && *got_picture_ptr == 0).
426 p = &fctx->threads[finished++];
428 if (p->state != STATE_INPUT_READY) {
429 pthread_mutex_lock(&p->progress_mutex);
430 while (p->state != STATE_INPUT_READY)
431 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
432 pthread_mutex_unlock(&p->progress_mutex);
435 av_frame_move_ref(picture, p->frame);
436 *got_picture_ptr = p->got_frame;
437 picture->pkt_dts = p->avpkt.dts;
443 * A later call with avkpt->size == 0 may loop over all threads,
444 * including this one, searching for a frame to return before being
445 * stopped by the "finished != fctx->next_finished" condition.
446 * Make sure we don't mistakenly return the same frame again.
450 if (finished >= avctx->thread_count) finished = 0;
451 } while (!avpkt->size && !*got_picture_ptr && finished != fctx->next_finished);
453 update_context_from_thread(avctx, p->avctx, 1);
455 if (fctx->next_decoding >= avctx->thread_count) fctx->next_decoding = 0;
457 fctx->next_finished = finished;
460 * When no frame was found while flushing, but an error occurred in
461 * any thread, return it instead of 0.
462 * Otherwise the error can get lost.
464 if (!avpkt->size && !*got_picture_ptr)
467 /* return the size of the consumed packet if no error occurred */
468 return (p->result >= 0) ? avpkt->size : p->result;
471 void ff_thread_report_progress(ThreadFrame *f, int n, int field)
474 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
476 if (!progress || progress[field] >= n) return;
478 p = f->owner->internal->thread_ctx;
480 if (f->owner->debug&FF_DEBUG_THREADS)
481 av_log(f->owner, AV_LOG_DEBUG, "%p finished %d field %d\n", progress, n, field);
483 pthread_mutex_lock(&p->progress_mutex);
485 pthread_cond_broadcast(&p->progress_cond);
486 pthread_mutex_unlock(&p->progress_mutex);
489 void ff_thread_await_progress(ThreadFrame *f, int n, int field)
492 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
494 if (!progress || progress[field] >= n) return;
496 p = f->owner->internal->thread_ctx;
498 if (f->owner->debug&FF_DEBUG_THREADS)
499 av_log(f->owner, AV_LOG_DEBUG, "thread awaiting %d field %d from %p\n", n, field, progress);
501 pthread_mutex_lock(&p->progress_mutex);
502 while (progress[field] < n)
503 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
504 pthread_mutex_unlock(&p->progress_mutex);
507 void ff_thread_finish_setup(AVCodecContext *avctx) {
508 PerThreadContext *p = avctx->internal->thread_ctx;
510 if (!(avctx->active_thread_type&FF_THREAD_FRAME)) return;
512 if(p->state == STATE_SETUP_FINISHED){
513 av_log(avctx, AV_LOG_WARNING, "Multiple ff_thread_finish_setup() calls\n");
516 pthread_mutex_lock(&p->progress_mutex);
517 p->state = STATE_SETUP_FINISHED;
518 pthread_cond_broadcast(&p->progress_cond);
519 pthread_mutex_unlock(&p->progress_mutex);
522 /// Waits for all threads to finish.
523 static void park_frame_worker_threads(FrameThreadContext *fctx, int thread_count)
527 for (i = 0; i < thread_count; i++) {
528 PerThreadContext *p = &fctx->threads[i];
530 if (p->state != STATE_INPUT_READY) {
531 pthread_mutex_lock(&p->progress_mutex);
532 while (p->state != STATE_INPUT_READY)
533 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
534 pthread_mutex_unlock(&p->progress_mutex);
540 void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
542 FrameThreadContext *fctx = avctx->internal->thread_ctx;
543 const AVCodec *codec = avctx->codec;
546 park_frame_worker_threads(fctx, thread_count);
548 if (fctx->prev_thread && fctx->prev_thread != fctx->threads)
549 if (update_context_from_thread(fctx->threads->avctx, fctx->prev_thread->avctx, 0) < 0) {
550 av_log(avctx, AV_LOG_ERROR, "Final thread update failed\n");
551 fctx->prev_thread->avctx->internal->is_copy = fctx->threads->avctx->internal->is_copy;
552 fctx->threads->avctx->internal->is_copy = 1;
555 for (i = 0; i < thread_count; i++) {
556 PerThreadContext *p = &fctx->threads[i];
558 pthread_mutex_lock(&p->mutex);
560 pthread_cond_signal(&p->input_cond);
561 pthread_mutex_unlock(&p->mutex);
564 pthread_join(p->thread, NULL);
567 if (codec->close && p->avctx)
568 codec->close(p->avctx);
570 release_delayed_buffers(p);
571 av_frame_free(&p->frame);
574 for (i = 0; i < thread_count; i++) {
575 PerThreadContext *p = &fctx->threads[i];
577 pthread_mutex_destroy(&p->mutex);
578 pthread_mutex_destroy(&p->progress_mutex);
579 pthread_cond_destroy(&p->input_cond);
580 pthread_cond_destroy(&p->progress_cond);
581 pthread_cond_destroy(&p->output_cond);
582 av_packet_unref(&p->avpkt);
583 av_freep(&p->released_buffers);
586 av_freep(&p->avctx->priv_data);
587 av_freep(&p->avctx->slice_offset);
591 av_freep(&p->avctx->internal);
595 av_freep(&fctx->threads);
596 pthread_mutex_destroy(&fctx->buffer_mutex);
597 av_freep(&avctx->internal->thread_ctx);
599 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
600 av_opt_free(avctx->priv_data);
604 int ff_frame_thread_init(AVCodecContext *avctx)
606 int thread_count = avctx->thread_count;
607 const AVCodec *codec = avctx->codec;
608 AVCodecContext *src = avctx;
609 FrameThreadContext *fctx;
617 int nb_cpus = av_cpu_count();
618 if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv)
620 // use number of cores + 1 as thread count if there is more than one
622 thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
624 thread_count = avctx->thread_count = 1;
627 if (thread_count <= 1) {
628 avctx->active_thread_type = 0;
632 avctx->internal->thread_ctx = fctx = av_mallocz(sizeof(FrameThreadContext));
634 return AVERROR(ENOMEM);
636 fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
637 if (!fctx->threads) {
638 av_freep(&avctx->internal->thread_ctx);
639 return AVERROR(ENOMEM);
642 pthread_mutex_init(&fctx->buffer_mutex, NULL);
645 for (i = 0; i < thread_count; i++) {
646 AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
647 PerThreadContext *p = &fctx->threads[i];
649 pthread_mutex_init(&p->mutex, NULL);
650 pthread_mutex_init(&p->progress_mutex, NULL);
651 pthread_cond_init(&p->input_cond, NULL);
652 pthread_cond_init(&p->progress_cond, NULL);
653 pthread_cond_init(&p->output_cond, NULL);
655 p->frame = av_frame_alloc();
658 err = AVERROR(ENOMEM);
666 err = AVERROR(ENOMEM);
672 copy->internal = av_malloc(sizeof(AVCodecInternal));
673 if (!copy->internal) {
674 copy->priv_data = NULL;
675 err = AVERROR(ENOMEM);
678 *copy->internal = *src->internal;
679 copy->internal->thread_ctx = p;
680 copy->internal->pkt = &p->avpkt;
686 err = codec->init(copy);
688 update_context_from_thread(avctx, copy, 1);
690 copy->priv_data = av_malloc(codec->priv_data_size);
691 if (!copy->priv_data) {
692 err = AVERROR(ENOMEM);
695 memcpy(copy->priv_data, src->priv_data, codec->priv_data_size);
696 copy->internal->is_copy = 1;
698 if (codec->init_thread_copy)
699 err = codec->init_thread_copy(copy);
704 err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
705 p->thread_init= !err;
713 ff_frame_thread_free(avctx, i+1);
718 void ff_thread_flush(AVCodecContext *avctx)
721 FrameThreadContext *fctx = avctx->internal->thread_ctx;
725 park_frame_worker_threads(fctx, avctx->thread_count);
726 if (fctx->prev_thread) {
727 if (fctx->prev_thread != &fctx->threads[0])
728 update_context_from_thread(fctx->threads[0].avctx, fctx->prev_thread->avctx, 0);
731 fctx->next_decoding = fctx->next_finished = 0;
733 fctx->prev_thread = NULL;
734 for (i = 0; i < avctx->thread_count; i++) {
735 PerThreadContext *p = &fctx->threads[i];
736 // Make sure decode flush calls with size=0 won't return old frames
738 av_frame_unref(p->frame);
740 release_delayed_buffers(p);
742 if (avctx->codec->flush)
743 avctx->codec->flush(p->avctx);
747 int ff_thread_can_start_frame(AVCodecContext *avctx)
749 PerThreadContext *p = avctx->internal->thread_ctx;
750 if ((avctx->active_thread_type&FF_THREAD_FRAME) && p->state != STATE_SETTING_UP &&
751 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
757 static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags)
759 PerThreadContext *p = avctx->internal->thread_ctx;
764 ff_init_buffer_info(avctx, f->f);
766 if (!(avctx->active_thread_type & FF_THREAD_FRAME))
767 return ff_get_buffer(avctx, f->f, flags);
769 if (p->state != STATE_SETTING_UP &&
770 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
771 av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
775 if (avctx->internal->allocate_progress) {
777 f->progress = av_buffer_alloc(2 * sizeof(int));
779 return AVERROR(ENOMEM);
781 progress = (int*)f->progress->data;
783 progress[0] = progress[1] = -1;
786 pthread_mutex_lock(&p->parent->buffer_mutex);
787 if (avctx->thread_safe_callbacks ||
788 avctx->get_buffer2 == avcodec_default_get_buffer2) {
789 err = ff_get_buffer(avctx, f->f, flags);
791 pthread_mutex_lock(&p->progress_mutex);
792 p->requested_frame = f->f;
793 p->requested_flags = flags;
794 p->state = STATE_GET_BUFFER;
795 pthread_cond_broadcast(&p->progress_cond);
797 while (p->state != STATE_SETTING_UP)
798 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
802 pthread_mutex_unlock(&p->progress_mutex);
805 if (!THREAD_SAFE_CALLBACKS(avctx) && !avctx->codec->update_thread_context)
806 ff_thread_finish_setup(avctx);
808 av_buffer_unref(&f->progress);
810 pthread_mutex_unlock(&p->parent->buffer_mutex);
815 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
817 enum AVPixelFormat res;
818 PerThreadContext *p = avctx->internal->thread_ctx;
819 if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
820 avctx->get_format == avcodec_default_get_format)
821 return ff_get_format(avctx, fmt);
822 if (p->state != STATE_SETTING_UP) {
823 av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
826 pthread_mutex_lock(&p->progress_mutex);
827 p->available_formats = fmt;
828 p->state = STATE_GET_FORMAT;
829 pthread_cond_broadcast(&p->progress_cond);
831 while (p->state != STATE_SETTING_UP)
832 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
834 res = p->result_format;
836 pthread_mutex_unlock(&p->progress_mutex);
841 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
843 int ret = thread_get_buffer_internal(avctx, f, flags);
845 av_log(avctx, AV_LOG_ERROR, "thread_get_buffer() failed\n");
849 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
851 PerThreadContext *p = avctx->internal->thread_ctx;
852 FrameThreadContext *fctx;
854 int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
855 avctx->thread_safe_callbacks ||
856 avctx->get_buffer2 == avcodec_default_get_buffer2;
858 if (!f->f || !f->f->buf[0])
861 if (avctx->debug & FF_DEBUG_BUFFERS)
862 av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
864 av_buffer_unref(&f->progress);
867 if (can_direct_free) {
868 av_frame_unref(f->f);
873 pthread_mutex_lock(&fctx->buffer_mutex);
875 if (p->num_released_buffers + 1 >= INT_MAX / sizeof(*p->released_buffers))
877 tmp = av_fast_realloc(p->released_buffers, &p->released_buffers_allocated,
878 (p->num_released_buffers + 1) *
879 sizeof(*p->released_buffers));
882 p->released_buffers = tmp;
884 dst = &p->released_buffers[p->num_released_buffers];
885 av_frame_move_ref(dst, f->f);
887 p->num_released_buffers++;
890 pthread_mutex_unlock(&fctx->buffer_mutex);