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
32 #include "compat/w32pthreads.h"
34 #include "compat/os2threads.h"
39 #include "pthread_internal.h"
43 #include "libavutil/avassert.h"
44 #include "libavutil/buffer.h"
45 #include "libavutil/common.h"
46 #include "libavutil/cpu.h"
47 #include "libavutil/frame.h"
48 #include "libavutil/internal.h"
49 #include "libavutil/log.h"
50 #include "libavutil/mem.h"
51 #include "libavutil/opt.h"
54 * Context used by codec threads and stored in their AVCodecInternal thread_ctx.
56 typedef struct PerThreadContext {
57 struct FrameThreadContext *parent;
61 pthread_cond_t input_cond; ///< Used to wait for a new packet from the main thread.
62 pthread_cond_t progress_cond; ///< Used by child threads to wait for progress to change.
63 pthread_cond_t output_cond; ///< Used by the main thread to wait for frames to finish.
65 pthread_mutex_t mutex; ///< Mutex used to protect the contents of the PerThreadContext.
66 pthread_mutex_t progress_mutex; ///< Mutex used to protect frame progress values and progress_cond.
68 AVCodecContext *avctx; ///< Context used to decode packets passed to this thread.
70 AVPacket avpkt; ///< Input packet (for decoding) or output (for encoding).
72 AVFrame *frame; ///< Output frame (for decoding) or input (for encoding).
73 int got_frame; ///< The output of got_picture_ptr from the last avcodec_decode_video() call.
74 int result; ///< The result of the last codec decode/encode() call.
77 STATE_INPUT_READY, ///< Set when the thread is awaiting a packet.
78 STATE_SETTING_UP, ///< Set before the codec has called ff_thread_finish_setup().
79 STATE_GET_BUFFER, /**<
80 * Set when the codec calls get_buffer().
81 * State is returned to STATE_SETTING_UP afterwards.
83 STATE_GET_FORMAT, /**<
84 * Set when the codec calls get_format().
85 * State is returned to STATE_SETTING_UP afterwards.
87 STATE_SETUP_FINISHED ///< Set after the codec has called ff_thread_finish_setup().
91 * Array of frames passed to ff_thread_release_buffer().
92 * Frames are released after all threads referencing them are finished.
94 AVFrame *released_buffers;
95 int num_released_buffers;
96 int released_buffers_allocated;
98 AVFrame *requested_frame; ///< AVFrame the codec passed to get_buffer()
99 int requested_flags; ///< flags passed to get_buffer() for requested_frame
101 const enum AVPixelFormat *available_formats; ///< Format array for get_format()
102 enum AVPixelFormat result_format; ///< get_format() result
106 * Context stored in the client AVCodecInternal thread_ctx.
108 typedef struct FrameThreadContext {
109 PerThreadContext *threads; ///< The contexts for each thread.
110 PerThreadContext *prev_thread; ///< The last thread submit_packet() was called on.
112 pthread_mutex_t buffer_mutex; ///< Mutex used to protect get/release_buffer().
114 int next_decoding; ///< The next context to submit a packet to.
115 int next_finished; ///< The next context to return output from.
118 * Set for the first N packets, where N is the number of threads.
119 * While it is set, ff_thread_en/decode_frame won't return any results.
122 int die; ///< Set when threads should exit.
123 } FrameThreadContext;
125 #if FF_API_GET_BUFFER
126 #define THREAD_SAFE_CALLBACKS(avctx) \
127 ((avctx)->thread_safe_callbacks || (!(avctx)->get_buffer && (avctx)->get_buffer2 == avcodec_default_get_buffer2))
129 #define THREAD_SAFE_CALLBACKS(avctx) \
130 ((avctx)->thread_safe_callbacks || (avctx)->get_buffer2 == avcodec_default_get_buffer2)
134 * Codec worker thread.
136 * Automatically calls ff_thread_finish_setup() if the codec does
137 * not provide an update_thread_context method, or if the codec returns
140 static attribute_align_arg void *frame_worker_thread(void *arg)
142 PerThreadContext *p = arg;
143 FrameThreadContext *fctx = p->parent;
144 AVCodecContext *avctx = p->avctx;
145 const AVCodec *codec = avctx->codec;
147 pthread_mutex_lock(&p->mutex);
149 while (p->state == STATE_INPUT_READY && !fctx->die)
150 pthread_cond_wait(&p->input_cond, &p->mutex);
152 if (fctx->die) break;
154 if (!codec->update_thread_context && THREAD_SAFE_CALLBACKS(avctx))
155 ff_thread_finish_setup(avctx);
157 av_frame_unref(p->frame);
159 p->result = codec->decode(avctx, p->frame, &p->got_frame, &p->avpkt);
161 if ((p->result < 0 || !p->got_frame) && p->frame->buf[0]) {
162 if (avctx->internal->allocate_progress)
163 av_log(avctx, AV_LOG_ERROR, "A frame threaded decoder did not "
164 "free the frame on failure. This is a bug, please report it.\n");
165 av_frame_unref(p->frame);
168 if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx);
170 pthread_mutex_lock(&p->progress_mutex);
172 for (i = 0; i < MAX_BUFFERS; i++)
173 if (p->progress_used[i] && (p->got_frame || p->result<0 || avctx->codec_id != AV_CODEC_ID_H264)) {
174 p->progress[i][0] = INT_MAX;
175 p->progress[i][1] = INT_MAX;
178 p->state = STATE_INPUT_READY;
180 pthread_cond_broadcast(&p->progress_cond);
181 pthread_cond_signal(&p->output_cond);
182 pthread_mutex_unlock(&p->progress_mutex);
184 pthread_mutex_unlock(&p->mutex);
190 * Update the next thread's AVCodecContext with values from the reference thread's context.
192 * @param dst The destination context.
193 * @param src The source context.
194 * @param for_user 0 if the destination is a codec thread, 1 if the destination is the user's thread
196 static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src, int for_user)
201 dst->time_base = src->time_base;
202 dst->framerate = src->framerate;
203 dst->width = src->width;
204 dst->height = src->height;
205 dst->pix_fmt = src->pix_fmt;
207 dst->coded_width = src->coded_width;
208 dst->coded_height = src->coded_height;
210 dst->has_b_frames = src->has_b_frames;
211 dst->idct_algo = src->idct_algo;
213 dst->bits_per_coded_sample = src->bits_per_coded_sample;
214 dst->sample_aspect_ratio = src->sample_aspect_ratio;
216 FF_DISABLE_DEPRECATION_WARNINGS
217 dst->dtg_active_format = src->dtg_active_format;
218 FF_ENABLE_DEPRECATION_WARNINGS
219 #endif /* FF_API_AFD */
221 dst->profile = src->profile;
222 dst->level = src->level;
224 dst->bits_per_raw_sample = src->bits_per_raw_sample;
225 dst->ticks_per_frame = src->ticks_per_frame;
226 dst->color_primaries = src->color_primaries;
228 dst->color_trc = src->color_trc;
229 dst->colorspace = src->colorspace;
230 dst->color_range = src->color_range;
231 dst->chroma_sample_location = src->chroma_sample_location;
233 dst->hwaccel = src->hwaccel;
234 dst->hwaccel_context = src->hwaccel_context;
236 dst->channels = src->channels;
237 dst->sample_rate = src->sample_rate;
238 dst->sample_fmt = src->sample_fmt;
239 dst->channel_layout = src->channel_layout;
240 dst->internal->hwaccel_priv_data = src->internal->hwaccel_priv_data;
244 dst->delay = src->thread_count - 1;
245 #if FF_API_CODED_FRAME
246 FF_DISABLE_DEPRECATION_WARNINGS
247 dst->coded_frame = src->coded_frame;
248 FF_ENABLE_DEPRECATION_WARNINGS
251 if (dst->codec->update_thread_context)
252 err = dst->codec->update_thread_context(dst, src);
259 * Update the next thread's AVCodecContext with values set by the user.
261 * @param dst The destination context.
262 * @param src The source context.
263 * @return 0 on success, negative error code on failure
265 static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
267 #define copy_fields(s, e) memcpy(&dst->s, &src->s, (char*)&dst->e - (char*)&dst->s);
268 dst->flags = src->flags;
270 dst->draw_horiz_band= src->draw_horiz_band;
271 dst->get_buffer2 = src->get_buffer2;
272 #if FF_API_GET_BUFFER
273 FF_DISABLE_DEPRECATION_WARNINGS
274 dst->get_buffer = src->get_buffer;
275 dst->release_buffer = src->release_buffer;
276 FF_ENABLE_DEPRECATION_WARNINGS
279 dst->opaque = src->opaque;
280 dst->debug = src->debug;
281 dst->debug_mv = src->debug_mv;
283 dst->slice_flags = src->slice_flags;
284 dst->flags2 = src->flags2;
286 copy_fields(skip_loop_filter, subtitle_header);
288 dst->frame_number = src->frame_number;
289 dst->reordered_opaque = src->reordered_opaque;
290 dst->thread_safe_callbacks = src->thread_safe_callbacks;
292 if (src->slice_count && src->slice_offset) {
293 if (dst->slice_count < src->slice_count) {
294 int err = av_reallocp_array(&dst->slice_offset, src->slice_count,
295 sizeof(*dst->slice_offset));
299 memcpy(dst->slice_offset, src->slice_offset,
300 src->slice_count * sizeof(*dst->slice_offset));
302 dst->slice_count = src->slice_count;
307 /// Releases the buffers that this decoding thread was the last user of.
308 static void release_delayed_buffers(PerThreadContext *p)
310 FrameThreadContext *fctx = p->parent;
312 while (p->num_released_buffers > 0) {
315 pthread_mutex_lock(&fctx->buffer_mutex);
317 // fix extended data in case the caller screwed it up
318 av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
319 p->avctx->codec_type == AVMEDIA_TYPE_AUDIO);
320 f = &p->released_buffers[--p->num_released_buffers];
321 f->extended_data = f->data;
324 pthread_mutex_unlock(&fctx->buffer_mutex);
328 static int submit_packet(PerThreadContext *p, AVPacket *avpkt)
330 FrameThreadContext *fctx = p->parent;
331 PerThreadContext *prev_thread = fctx->prev_thread;
332 const AVCodec *codec = p->avctx->codec;
334 if (!avpkt->size && !(codec->capabilities & CODEC_CAP_DELAY)) return 0;
336 pthread_mutex_lock(&p->mutex);
338 release_delayed_buffers(p);
342 if (prev_thread->state == STATE_SETTING_UP) {
343 pthread_mutex_lock(&prev_thread->progress_mutex);
344 while (prev_thread->state == STATE_SETTING_UP)
345 pthread_cond_wait(&prev_thread->progress_cond, &prev_thread->progress_mutex);
346 pthread_mutex_unlock(&prev_thread->progress_mutex);
349 err = update_context_from_thread(p->avctx, prev_thread->avctx, 0);
351 pthread_mutex_unlock(&p->mutex);
356 av_packet_unref(&p->avpkt);
357 av_packet_ref(&p->avpkt, avpkt);
359 p->state = STATE_SETTING_UP;
360 pthread_cond_signal(&p->input_cond);
361 pthread_mutex_unlock(&p->mutex);
364 * If the client doesn't have a thread-safe get_buffer(),
365 * then decoding threads call back to the main thread,
366 * and it calls back to the client here.
369 FF_DISABLE_DEPRECATION_WARNINGS
370 if (!p->avctx->thread_safe_callbacks && (
371 p->avctx->get_format != avcodec_default_get_format ||
372 #if FF_API_GET_BUFFER
373 p->avctx->get_buffer ||
375 p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
376 FF_ENABLE_DEPRECATION_WARNINGS
377 while (p->state != STATE_SETUP_FINISHED && p->state != STATE_INPUT_READY) {
379 pthread_mutex_lock(&p->progress_mutex);
380 while (p->state == STATE_SETTING_UP)
381 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
384 case STATE_GET_BUFFER:
385 p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
387 case STATE_GET_FORMAT:
388 p->result_format = ff_get_format(p->avctx, p->available_formats);
395 p->state = STATE_SETTING_UP;
396 pthread_cond_signal(&p->progress_cond);
398 pthread_mutex_unlock(&p->progress_mutex);
402 fctx->prev_thread = p;
403 fctx->next_decoding++;
408 int ff_thread_decode_frame(AVCodecContext *avctx,
409 AVFrame *picture, int *got_picture_ptr,
412 FrameThreadContext *fctx = avctx->internal->thread_ctx;
413 int finished = fctx->next_finished;
418 * Submit a packet to the next decoding thread.
421 p = &fctx->threads[fctx->next_decoding];
422 err = update_context_from_user(p->avctx, avctx);
424 err = submit_packet(p, avpkt);
428 * If we're still receiving the initial packets, don't return a frame.
431 if (fctx->next_decoding > (avctx->thread_count-1-(avctx->codec_id == AV_CODEC_ID_FFV1)))
434 if (fctx->delaying) {
441 * Return the next available frame from the oldest thread.
442 * If we're at the end of the stream, then we have to skip threads that
443 * didn't output a frame, because we don't want to accidentally signal
444 * EOF (avpkt->size == 0 && *got_picture_ptr == 0).
448 p = &fctx->threads[finished++];
450 if (p->state != STATE_INPUT_READY) {
451 pthread_mutex_lock(&p->progress_mutex);
452 while (p->state != STATE_INPUT_READY)
453 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
454 pthread_mutex_unlock(&p->progress_mutex);
457 av_frame_move_ref(picture, p->frame);
458 *got_picture_ptr = p->got_frame;
459 picture->pkt_dts = p->avpkt.dts;
465 * A later call with avkpt->size == 0 may loop over all threads,
466 * including this one, searching for a frame to return before being
467 * stopped by the "finished != fctx->next_finished" condition.
468 * Make sure we don't mistakenly return the same frame again.
472 if (finished >= avctx->thread_count) finished = 0;
473 } while (!avpkt->size && !*got_picture_ptr && finished != fctx->next_finished);
475 update_context_from_thread(avctx, p->avctx, 1);
477 if (fctx->next_decoding >= avctx->thread_count) fctx->next_decoding = 0;
479 fctx->next_finished = finished;
482 * When no frame was found while flushing, but an error occurred in
483 * any thread, return it instead of 0.
484 * Otherwise the error can get lost.
486 if (!avpkt->size && !*got_picture_ptr)
489 /* return the size of the consumed packet if no error occurred */
490 return (p->result >= 0) ? avpkt->size : p->result;
493 void ff_thread_report_progress(ThreadFrame *f, int n, int field)
496 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
498 if (!progress || progress[field] >= n) return;
500 p = f->owner->internal->thread_ctx;
502 if (f->owner->debug&FF_DEBUG_THREADS)
503 av_log(f->owner, AV_LOG_DEBUG, "%p finished %d field %d\n", progress, n, field);
505 pthread_mutex_lock(&p->progress_mutex);
507 pthread_cond_broadcast(&p->progress_cond);
508 pthread_mutex_unlock(&p->progress_mutex);
511 void ff_thread_await_progress(ThreadFrame *f, int n, int field)
514 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
516 if (!progress || progress[field] >= n) return;
518 p = f->owner->internal->thread_ctx;
520 if (f->owner->debug&FF_DEBUG_THREADS)
521 av_log(f->owner, AV_LOG_DEBUG, "thread awaiting %d field %d from %p\n", n, field, progress);
523 pthread_mutex_lock(&p->progress_mutex);
524 while (progress[field] < n)
525 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
526 pthread_mutex_unlock(&p->progress_mutex);
529 void ff_thread_finish_setup(AVCodecContext *avctx) {
530 PerThreadContext *p = avctx->internal->thread_ctx;
532 if (!(avctx->active_thread_type&FF_THREAD_FRAME)) return;
534 if(p->state == STATE_SETUP_FINISHED){
535 av_log(avctx, AV_LOG_WARNING, "Multiple ff_thread_finish_setup() calls\n");
538 pthread_mutex_lock(&p->progress_mutex);
539 p->state = STATE_SETUP_FINISHED;
540 pthread_cond_broadcast(&p->progress_cond);
541 pthread_mutex_unlock(&p->progress_mutex);
544 /// Waits for all threads to finish.
545 static void park_frame_worker_threads(FrameThreadContext *fctx, int thread_count)
549 for (i = 0; i < thread_count; i++) {
550 PerThreadContext *p = &fctx->threads[i];
552 if (p->state != STATE_INPUT_READY) {
553 pthread_mutex_lock(&p->progress_mutex);
554 while (p->state != STATE_INPUT_READY)
555 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
556 pthread_mutex_unlock(&p->progress_mutex);
562 void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
564 FrameThreadContext *fctx = avctx->internal->thread_ctx;
565 const AVCodec *codec = avctx->codec;
568 park_frame_worker_threads(fctx, thread_count);
570 if (fctx->prev_thread && fctx->prev_thread != fctx->threads)
571 if (update_context_from_thread(fctx->threads->avctx, fctx->prev_thread->avctx, 0) < 0) {
572 av_log(avctx, AV_LOG_ERROR, "Final thread update failed\n");
573 fctx->prev_thread->avctx->internal->is_copy = fctx->threads->avctx->internal->is_copy;
574 fctx->threads->avctx->internal->is_copy = 1;
579 for (i = 0; i < thread_count; i++) {
580 PerThreadContext *p = &fctx->threads[i];
582 pthread_mutex_lock(&p->mutex);
583 pthread_cond_signal(&p->input_cond);
584 pthread_mutex_unlock(&p->mutex);
587 pthread_join(p->thread, NULL);
590 if (codec->close && p->avctx)
591 codec->close(p->avctx);
593 release_delayed_buffers(p);
594 av_frame_free(&p->frame);
597 for (i = 0; i < thread_count; i++) {
598 PerThreadContext *p = &fctx->threads[i];
600 pthread_mutex_destroy(&p->mutex);
601 pthread_mutex_destroy(&p->progress_mutex);
602 pthread_cond_destroy(&p->input_cond);
603 pthread_cond_destroy(&p->progress_cond);
604 pthread_cond_destroy(&p->output_cond);
605 av_packet_unref(&p->avpkt);
606 av_freep(&p->released_buffers);
609 av_freep(&p->avctx->priv_data);
610 av_freep(&p->avctx->slice_offset);
614 av_freep(&p->avctx->internal);
618 av_freep(&fctx->threads);
619 pthread_mutex_destroy(&fctx->buffer_mutex);
620 av_freep(&avctx->internal->thread_ctx);
622 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
623 av_opt_free(avctx->priv_data);
627 int ff_frame_thread_init(AVCodecContext *avctx)
629 int thread_count = avctx->thread_count;
630 const AVCodec *codec = avctx->codec;
631 AVCodecContext *src = avctx;
632 FrameThreadContext *fctx;
640 int nb_cpus = av_cpu_count();
641 if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv)
643 // use number of cores + 1 as thread count if there is more than one
645 thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
647 thread_count = avctx->thread_count = 1;
650 if (thread_count <= 1) {
651 avctx->active_thread_type = 0;
655 avctx->internal->thread_ctx = fctx = av_mallocz(sizeof(FrameThreadContext));
657 return AVERROR(ENOMEM);
659 fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
660 if (!fctx->threads) {
661 av_freep(&avctx->internal->thread_ctx);
662 return AVERROR(ENOMEM);
665 pthread_mutex_init(&fctx->buffer_mutex, NULL);
668 for (i = 0; i < thread_count; i++) {
669 AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
670 PerThreadContext *p = &fctx->threads[i];
672 pthread_mutex_init(&p->mutex, NULL);
673 pthread_mutex_init(&p->progress_mutex, NULL);
674 pthread_cond_init(&p->input_cond, NULL);
675 pthread_cond_init(&p->progress_cond, NULL);
676 pthread_cond_init(&p->output_cond, NULL);
678 p->frame = av_frame_alloc();
681 err = AVERROR(ENOMEM);
689 err = AVERROR(ENOMEM);
695 copy->internal = av_malloc(sizeof(AVCodecInternal));
696 if (!copy->internal) {
697 copy->priv_data = NULL;
698 err = AVERROR(ENOMEM);
701 *copy->internal = *src->internal;
702 copy->internal->thread_ctx = p;
703 copy->internal->pkt = &p->avpkt;
709 err = codec->init(copy);
711 update_context_from_thread(avctx, copy, 1);
713 copy->priv_data = av_malloc(codec->priv_data_size);
714 if (!copy->priv_data) {
715 err = AVERROR(ENOMEM);
718 memcpy(copy->priv_data, src->priv_data, codec->priv_data_size);
719 copy->internal->is_copy = 1;
721 if (codec->init_thread_copy)
722 err = codec->init_thread_copy(copy);
727 err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
728 p->thread_init= !err;
736 ff_frame_thread_free(avctx, i+1);
741 void ff_thread_flush(AVCodecContext *avctx)
744 FrameThreadContext *fctx = avctx->internal->thread_ctx;
748 park_frame_worker_threads(fctx, avctx->thread_count);
749 if (fctx->prev_thread) {
750 if (fctx->prev_thread != &fctx->threads[0])
751 update_context_from_thread(fctx->threads[0].avctx, fctx->prev_thread->avctx, 0);
754 fctx->next_decoding = fctx->next_finished = 0;
756 fctx->prev_thread = NULL;
757 for (i = 0; i < avctx->thread_count; i++) {
758 PerThreadContext *p = &fctx->threads[i];
759 // Make sure decode flush calls with size=0 won't return old frames
761 av_frame_unref(p->frame);
763 release_delayed_buffers(p);
765 if (avctx->codec->flush)
766 avctx->codec->flush(p->avctx);
770 int ff_thread_can_start_frame(AVCodecContext *avctx)
772 PerThreadContext *p = avctx->internal->thread_ctx;
773 if ((avctx->active_thread_type&FF_THREAD_FRAME) && p->state != STATE_SETTING_UP &&
774 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
780 static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags)
782 PerThreadContext *p = avctx->internal->thread_ctx;
787 ff_init_buffer_info(avctx, f->f);
789 if (!(avctx->active_thread_type & FF_THREAD_FRAME))
790 return ff_get_buffer(avctx, f->f, flags);
792 if (p->state != STATE_SETTING_UP &&
793 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
794 av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
798 if (avctx->internal->allocate_progress) {
800 f->progress = av_buffer_alloc(2 * sizeof(int));
802 return AVERROR(ENOMEM);
804 progress = (int*)f->progress->data;
806 progress[0] = progress[1] = -1;
809 pthread_mutex_lock(&p->parent->buffer_mutex);
810 FF_DISABLE_DEPRECATION_WARNINGS
811 if (avctx->thread_safe_callbacks || (
812 #if FF_API_GET_BUFFER
813 !avctx->get_buffer &&
815 avctx->get_buffer2 == avcodec_default_get_buffer2)) {
816 FF_ENABLE_DEPRECATION_WARNINGS
817 err = ff_get_buffer(avctx, f->f, flags);
819 pthread_mutex_lock(&p->progress_mutex);
820 p->requested_frame = f->f;
821 p->requested_flags = flags;
822 p->state = STATE_GET_BUFFER;
823 pthread_cond_broadcast(&p->progress_cond);
825 while (p->state != STATE_SETTING_UP)
826 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
830 pthread_mutex_unlock(&p->progress_mutex);
833 if (!THREAD_SAFE_CALLBACKS(avctx) && !avctx->codec->update_thread_context)
834 ff_thread_finish_setup(avctx);
837 av_buffer_unref(&f->progress);
839 pthread_mutex_unlock(&p->parent->buffer_mutex);
844 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
846 enum AVPixelFormat res;
847 PerThreadContext *p = avctx->internal->thread_ctx;
848 if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
849 avctx->get_format == avcodec_default_get_format)
850 return ff_get_format(avctx, fmt);
851 if (p->state != STATE_SETTING_UP) {
852 av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
855 pthread_mutex_lock(&p->progress_mutex);
856 p->available_formats = fmt;
857 p->state = STATE_GET_FORMAT;
858 pthread_cond_broadcast(&p->progress_cond);
860 while (p->state != STATE_SETTING_UP)
861 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
863 res = p->result_format;
865 pthread_mutex_unlock(&p->progress_mutex);
870 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
872 int ret = thread_get_buffer_internal(avctx, f, flags);
874 av_log(avctx, AV_LOG_ERROR, "thread_get_buffer() failed\n");
878 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
880 PerThreadContext *p = avctx->internal->thread_ctx;
881 FrameThreadContext *fctx;
883 FF_DISABLE_DEPRECATION_WARNINGS
884 int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
885 avctx->thread_safe_callbacks ||
887 #if FF_API_GET_BUFFER
888 !avctx->get_buffer &&
890 avctx->get_buffer2 == avcodec_default_get_buffer2);
891 FF_ENABLE_DEPRECATION_WARNINGS
893 if (!f->f || !f->f->buf[0])
896 if (avctx->debug & FF_DEBUG_BUFFERS)
897 av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
899 av_buffer_unref(&f->progress);
902 if (can_direct_free) {
903 av_frame_unref(f->f);
908 pthread_mutex_lock(&fctx->buffer_mutex);
910 if (p->num_released_buffers + 1 >= INT_MAX / sizeof(*p->released_buffers))
912 tmp = av_fast_realloc(p->released_buffers, &p->released_buffers_allocated,
913 (p->num_released_buffers + 1) *
914 sizeof(*p->released_buffers));
917 p->released_buffers = tmp;
919 dst = &p->released_buffers[p->num_released_buffers];
920 av_frame_move_ref(dst, f->f);
922 p->num_released_buffers++;
925 pthread_mutex_unlock(&fctx->buffer_mutex);