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 FF_DISABLE_DEPRECATION_WARNINGS
155 if (!codec->update_thread_context && THREAD_SAFE_CALLBACKS(avctx))
156 ff_thread_finish_setup(avctx);
157 FF_ENABLE_DEPRECATION_WARNINGS
159 av_frame_unref(p->frame);
161 p->result = codec->decode(avctx, p->frame, &p->got_frame, &p->avpkt);
163 if ((p->result < 0 || !p->got_frame) && p->frame->buf[0]) {
164 if (avctx->internal->allocate_progress)
165 av_log(avctx, AV_LOG_ERROR, "A frame threaded decoder did not "
166 "free the frame on failure. This is a bug, please report it.\n");
167 av_frame_unref(p->frame);
170 if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx);
172 pthread_mutex_lock(&p->progress_mutex);
174 for (i = 0; i < MAX_BUFFERS; i++)
175 if (p->progress_used[i] && (p->got_frame || p->result<0 || avctx->codec_id != AV_CODEC_ID_H264)) {
176 p->progress[i][0] = INT_MAX;
177 p->progress[i][1] = INT_MAX;
180 p->state = STATE_INPUT_READY;
182 pthread_cond_broadcast(&p->progress_cond);
183 pthread_cond_signal(&p->output_cond);
184 pthread_mutex_unlock(&p->progress_mutex);
186 pthread_mutex_unlock(&p->mutex);
192 * Update the next thread's AVCodecContext with values from the reference thread's context.
194 * @param dst The destination context.
195 * @param src The source context.
196 * @param for_user 0 if the destination is a codec thread, 1 if the destination is the user's thread
198 static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src, int for_user)
203 dst->time_base = src->time_base;
204 dst->framerate = src->framerate;
205 dst->width = src->width;
206 dst->height = src->height;
207 dst->pix_fmt = src->pix_fmt;
209 dst->coded_width = src->coded_width;
210 dst->coded_height = src->coded_height;
212 dst->has_b_frames = src->has_b_frames;
213 dst->idct_algo = src->idct_algo;
215 dst->bits_per_coded_sample = src->bits_per_coded_sample;
216 dst->sample_aspect_ratio = src->sample_aspect_ratio;
218 FF_DISABLE_DEPRECATION_WARNINGS
219 dst->dtg_active_format = src->dtg_active_format;
220 FF_ENABLE_DEPRECATION_WARNINGS
221 #endif /* FF_API_AFD */
223 dst->profile = src->profile;
224 dst->level = src->level;
226 dst->bits_per_raw_sample = src->bits_per_raw_sample;
227 dst->ticks_per_frame = src->ticks_per_frame;
228 dst->color_primaries = src->color_primaries;
230 dst->color_trc = src->color_trc;
231 dst->colorspace = src->colorspace;
232 dst->color_range = src->color_range;
233 dst->chroma_sample_location = src->chroma_sample_location;
235 dst->hwaccel = src->hwaccel;
236 dst->hwaccel_context = src->hwaccel_context;
238 dst->channels = src->channels;
239 dst->sample_rate = src->sample_rate;
240 dst->sample_fmt = src->sample_fmt;
241 dst->channel_layout = src->channel_layout;
242 dst->internal->hwaccel_priv_data = src->internal->hwaccel_priv_data;
246 dst->delay = src->thread_count - 1;
247 #if FF_API_CODED_FRAME
248 FF_DISABLE_DEPRECATION_WARNINGS
249 dst->coded_frame = src->coded_frame;
250 FF_ENABLE_DEPRECATION_WARNINGS
253 if (dst->codec->update_thread_context)
254 err = dst->codec->update_thread_context(dst, src);
261 * Update the next thread's AVCodecContext with values set by the user.
263 * @param dst The destination context.
264 * @param src The source context.
265 * @return 0 on success, negative error code on failure
267 static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
269 #define copy_fields(s, e) memcpy(&dst->s, &src->s, (char*)&dst->e - (char*)&dst->s);
270 dst->flags = src->flags;
272 dst->draw_horiz_band= src->draw_horiz_band;
273 dst->get_buffer2 = src->get_buffer2;
274 #if FF_API_GET_BUFFER
275 FF_DISABLE_DEPRECATION_WARNINGS
276 dst->get_buffer = src->get_buffer;
277 dst->release_buffer = src->release_buffer;
278 FF_ENABLE_DEPRECATION_WARNINGS
281 dst->opaque = src->opaque;
282 dst->debug = src->debug;
283 dst->debug_mv = src->debug_mv;
285 dst->slice_flags = src->slice_flags;
286 dst->flags2 = src->flags2;
288 copy_fields(skip_loop_filter, subtitle_header);
290 dst->frame_number = src->frame_number;
291 dst->reordered_opaque = src->reordered_opaque;
292 dst->thread_safe_callbacks = src->thread_safe_callbacks;
294 if (src->slice_count && src->slice_offset) {
295 if (dst->slice_count < src->slice_count) {
296 int err = av_reallocp_array(&dst->slice_offset, src->slice_count,
297 sizeof(*dst->slice_offset));
301 memcpy(dst->slice_offset, src->slice_offset,
302 src->slice_count * sizeof(*dst->slice_offset));
304 dst->slice_count = src->slice_count;
309 /// Releases the buffers that this decoding thread was the last user of.
310 static void release_delayed_buffers(PerThreadContext *p)
312 FrameThreadContext *fctx = p->parent;
314 while (p->num_released_buffers > 0) {
317 pthread_mutex_lock(&fctx->buffer_mutex);
319 // fix extended data in case the caller screwed it up
320 av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
321 p->avctx->codec_type == AVMEDIA_TYPE_AUDIO);
322 f = &p->released_buffers[--p->num_released_buffers];
323 f->extended_data = f->data;
326 pthread_mutex_unlock(&fctx->buffer_mutex);
330 static int submit_packet(PerThreadContext *p, AVPacket *avpkt)
332 FrameThreadContext *fctx = p->parent;
333 PerThreadContext *prev_thread = fctx->prev_thread;
334 const AVCodec *codec = p->avctx->codec;
336 if (!avpkt->size && !(codec->capabilities & AV_CODEC_CAP_DELAY))
339 pthread_mutex_lock(&p->mutex);
341 release_delayed_buffers(p);
345 if (prev_thread->state == STATE_SETTING_UP) {
346 pthread_mutex_lock(&prev_thread->progress_mutex);
347 while (prev_thread->state == STATE_SETTING_UP)
348 pthread_cond_wait(&prev_thread->progress_cond, &prev_thread->progress_mutex);
349 pthread_mutex_unlock(&prev_thread->progress_mutex);
352 err = update_context_from_thread(p->avctx, prev_thread->avctx, 0);
354 pthread_mutex_unlock(&p->mutex);
359 av_packet_unref(&p->avpkt);
360 av_packet_ref(&p->avpkt, avpkt);
362 p->state = STATE_SETTING_UP;
363 pthread_cond_signal(&p->input_cond);
364 pthread_mutex_unlock(&p->mutex);
367 * If the client doesn't have a thread-safe get_buffer(),
368 * then decoding threads call back to the main thread,
369 * and it calls back to the client here.
372 FF_DISABLE_DEPRECATION_WARNINGS
373 if (!p->avctx->thread_safe_callbacks && (
374 p->avctx->get_format != avcodec_default_get_format ||
375 #if FF_API_GET_BUFFER
376 p->avctx->get_buffer ||
378 p->avctx->get_buffer2 != avcodec_default_get_buffer2)) {
379 FF_ENABLE_DEPRECATION_WARNINGS
380 while (p->state != STATE_SETUP_FINISHED && p->state != STATE_INPUT_READY) {
382 pthread_mutex_lock(&p->progress_mutex);
383 while (p->state == STATE_SETTING_UP)
384 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
387 case STATE_GET_BUFFER:
388 p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags);
390 case STATE_GET_FORMAT:
391 p->result_format = ff_get_format(p->avctx, p->available_formats);
398 p->state = STATE_SETTING_UP;
399 pthread_cond_signal(&p->progress_cond);
401 pthread_mutex_unlock(&p->progress_mutex);
405 fctx->prev_thread = p;
406 fctx->next_decoding++;
411 int ff_thread_decode_frame(AVCodecContext *avctx,
412 AVFrame *picture, int *got_picture_ptr,
415 FrameThreadContext *fctx = avctx->internal->thread_ctx;
416 int finished = fctx->next_finished;
421 * Submit a packet to the next decoding thread.
424 p = &fctx->threads[fctx->next_decoding];
425 err = update_context_from_user(p->avctx, avctx);
427 err = submit_packet(p, avpkt);
431 * If we're still receiving the initial packets, don't return a frame.
434 if (fctx->next_decoding > (avctx->thread_count-1-(avctx->codec_id == AV_CODEC_ID_FFV1)))
437 if (fctx->delaying) {
444 * Return the next available frame from the oldest thread.
445 * If we're at the end of the stream, then we have to skip threads that
446 * didn't output a frame, because we don't want to accidentally signal
447 * EOF (avpkt->size == 0 && *got_picture_ptr == 0).
451 p = &fctx->threads[finished++];
453 if (p->state != STATE_INPUT_READY) {
454 pthread_mutex_lock(&p->progress_mutex);
455 while (p->state != STATE_INPUT_READY)
456 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
457 pthread_mutex_unlock(&p->progress_mutex);
460 av_frame_move_ref(picture, p->frame);
461 *got_picture_ptr = p->got_frame;
462 picture->pkt_dts = p->avpkt.dts;
468 * A later call with avkpt->size == 0 may loop over all threads,
469 * including this one, searching for a frame to return before being
470 * stopped by the "finished != fctx->next_finished" condition.
471 * Make sure we don't mistakenly return the same frame again.
475 if (finished >= avctx->thread_count) finished = 0;
476 } while (!avpkt->size && !*got_picture_ptr && finished != fctx->next_finished);
478 update_context_from_thread(avctx, p->avctx, 1);
480 if (fctx->next_decoding >= avctx->thread_count) fctx->next_decoding = 0;
482 fctx->next_finished = finished;
485 * When no frame was found while flushing, but an error occurred in
486 * any thread, return it instead of 0.
487 * Otherwise the error can get lost.
489 if (!avpkt->size && !*got_picture_ptr)
492 /* return the size of the consumed packet if no error occurred */
493 return (p->result >= 0) ? avpkt->size : p->result;
496 void ff_thread_report_progress(ThreadFrame *f, int n, int field)
499 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
501 if (!progress || progress[field] >= n) return;
503 p = f->owner->internal->thread_ctx;
505 if (f->owner->debug&FF_DEBUG_THREADS)
506 av_log(f->owner, AV_LOG_DEBUG, "%p finished %d field %d\n", progress, n, field);
508 pthread_mutex_lock(&p->progress_mutex);
510 pthread_cond_broadcast(&p->progress_cond);
511 pthread_mutex_unlock(&p->progress_mutex);
514 void ff_thread_await_progress(ThreadFrame *f, int n, int field)
517 volatile int *progress = f->progress ? (int*)f->progress->data : NULL;
519 if (!progress || progress[field] >= n) return;
521 p = f->owner->internal->thread_ctx;
523 if (f->owner->debug&FF_DEBUG_THREADS)
524 av_log(f->owner, AV_LOG_DEBUG, "thread awaiting %d field %d from %p\n", n, field, progress);
526 pthread_mutex_lock(&p->progress_mutex);
527 while (progress[field] < n)
528 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
529 pthread_mutex_unlock(&p->progress_mutex);
532 void ff_thread_finish_setup(AVCodecContext *avctx) {
533 PerThreadContext *p = avctx->internal->thread_ctx;
535 if (!(avctx->active_thread_type&FF_THREAD_FRAME)) return;
537 if(p->state == STATE_SETUP_FINISHED){
538 av_log(avctx, AV_LOG_WARNING, "Multiple ff_thread_finish_setup() calls\n");
541 pthread_mutex_lock(&p->progress_mutex);
542 p->state = STATE_SETUP_FINISHED;
543 pthread_cond_broadcast(&p->progress_cond);
544 pthread_mutex_unlock(&p->progress_mutex);
547 /// Waits for all threads to finish.
548 static void park_frame_worker_threads(FrameThreadContext *fctx, int thread_count)
552 for (i = 0; i < thread_count; i++) {
553 PerThreadContext *p = &fctx->threads[i];
555 if (p->state != STATE_INPUT_READY) {
556 pthread_mutex_lock(&p->progress_mutex);
557 while (p->state != STATE_INPUT_READY)
558 pthread_cond_wait(&p->output_cond, &p->progress_mutex);
559 pthread_mutex_unlock(&p->progress_mutex);
565 void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
567 FrameThreadContext *fctx = avctx->internal->thread_ctx;
568 const AVCodec *codec = avctx->codec;
571 park_frame_worker_threads(fctx, thread_count);
573 if (fctx->prev_thread && fctx->prev_thread != fctx->threads)
574 if (update_context_from_thread(fctx->threads->avctx, fctx->prev_thread->avctx, 0) < 0) {
575 av_log(avctx, AV_LOG_ERROR, "Final thread update failed\n");
576 fctx->prev_thread->avctx->internal->is_copy = fctx->threads->avctx->internal->is_copy;
577 fctx->threads->avctx->internal->is_copy = 1;
582 for (i = 0; i < thread_count; i++) {
583 PerThreadContext *p = &fctx->threads[i];
585 pthread_mutex_lock(&p->mutex);
586 pthread_cond_signal(&p->input_cond);
587 pthread_mutex_unlock(&p->mutex);
590 pthread_join(p->thread, NULL);
593 if (codec->close && p->avctx)
594 codec->close(p->avctx);
596 release_delayed_buffers(p);
597 av_frame_free(&p->frame);
600 for (i = 0; i < thread_count; i++) {
601 PerThreadContext *p = &fctx->threads[i];
603 pthread_mutex_destroy(&p->mutex);
604 pthread_mutex_destroy(&p->progress_mutex);
605 pthread_cond_destroy(&p->input_cond);
606 pthread_cond_destroy(&p->progress_cond);
607 pthread_cond_destroy(&p->output_cond);
608 av_packet_unref(&p->avpkt);
609 av_freep(&p->released_buffers);
612 av_freep(&p->avctx->priv_data);
613 av_freep(&p->avctx->slice_offset);
617 av_freep(&p->avctx->internal);
621 av_freep(&fctx->threads);
622 pthread_mutex_destroy(&fctx->buffer_mutex);
623 av_freep(&avctx->internal->thread_ctx);
625 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
626 av_opt_free(avctx->priv_data);
630 int ff_frame_thread_init(AVCodecContext *avctx)
632 int thread_count = avctx->thread_count;
633 const AVCodec *codec = avctx->codec;
634 AVCodecContext *src = avctx;
635 FrameThreadContext *fctx;
643 int nb_cpus = av_cpu_count();
644 if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv)
646 // use number of cores + 1 as thread count if there is more than one
648 thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
650 thread_count = avctx->thread_count = 1;
653 if (thread_count <= 1) {
654 avctx->active_thread_type = 0;
658 avctx->internal->thread_ctx = fctx = av_mallocz(sizeof(FrameThreadContext));
660 return AVERROR(ENOMEM);
662 fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
663 if (!fctx->threads) {
664 av_freep(&avctx->internal->thread_ctx);
665 return AVERROR(ENOMEM);
668 pthread_mutex_init(&fctx->buffer_mutex, NULL);
671 for (i = 0; i < thread_count; i++) {
672 AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
673 PerThreadContext *p = &fctx->threads[i];
675 pthread_mutex_init(&p->mutex, NULL);
676 pthread_mutex_init(&p->progress_mutex, NULL);
677 pthread_cond_init(&p->input_cond, NULL);
678 pthread_cond_init(&p->progress_cond, NULL);
679 pthread_cond_init(&p->output_cond, NULL);
681 p->frame = av_frame_alloc();
684 err = AVERROR(ENOMEM);
692 err = AVERROR(ENOMEM);
698 copy->internal = av_malloc(sizeof(AVCodecInternal));
699 if (!copy->internal) {
700 copy->priv_data = NULL;
701 err = AVERROR(ENOMEM);
704 *copy->internal = *src->internal;
705 copy->internal->thread_ctx = p;
706 copy->internal->pkt = &p->avpkt;
712 err = codec->init(copy);
714 update_context_from_thread(avctx, copy, 1);
716 copy->priv_data = av_malloc(codec->priv_data_size);
717 if (!copy->priv_data) {
718 err = AVERROR(ENOMEM);
721 memcpy(copy->priv_data, src->priv_data, codec->priv_data_size);
722 copy->internal->is_copy = 1;
724 if (codec->init_thread_copy)
725 err = codec->init_thread_copy(copy);
730 err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
731 p->thread_init= !err;
739 ff_frame_thread_free(avctx, i+1);
744 void ff_thread_flush(AVCodecContext *avctx)
747 FrameThreadContext *fctx = avctx->internal->thread_ctx;
751 park_frame_worker_threads(fctx, avctx->thread_count);
752 if (fctx->prev_thread) {
753 if (fctx->prev_thread != &fctx->threads[0])
754 update_context_from_thread(fctx->threads[0].avctx, fctx->prev_thread->avctx, 0);
757 fctx->next_decoding = fctx->next_finished = 0;
759 fctx->prev_thread = NULL;
760 for (i = 0; i < avctx->thread_count; i++) {
761 PerThreadContext *p = &fctx->threads[i];
762 // Make sure decode flush calls with size=0 won't return old frames
764 av_frame_unref(p->frame);
766 release_delayed_buffers(p);
768 if (avctx->codec->flush)
769 avctx->codec->flush(p->avctx);
773 int ff_thread_can_start_frame(AVCodecContext *avctx)
775 PerThreadContext *p = avctx->internal->thread_ctx;
776 FF_DISABLE_DEPRECATION_WARNINGS
777 if ((avctx->active_thread_type&FF_THREAD_FRAME) && p->state != STATE_SETTING_UP &&
778 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
779 FF_ENABLE_DEPRECATION_WARNINGS
785 static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags)
787 PerThreadContext *p = avctx->internal->thread_ctx;
792 ff_init_buffer_info(avctx, f->f);
794 if (!(avctx->active_thread_type & FF_THREAD_FRAME))
795 return ff_get_buffer(avctx, f->f, flags);
797 FF_DISABLE_DEPRECATION_WARNINGS
798 if (p->state != STATE_SETTING_UP &&
799 (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) {
800 FF_ENABLE_DEPRECATION_WARNINGS
801 av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n");
805 if (avctx->internal->allocate_progress) {
807 f->progress = av_buffer_alloc(2 * sizeof(int));
809 return AVERROR(ENOMEM);
811 progress = (int*)f->progress->data;
813 progress[0] = progress[1] = -1;
816 pthread_mutex_lock(&p->parent->buffer_mutex);
817 FF_DISABLE_DEPRECATION_WARNINGS
818 if (avctx->thread_safe_callbacks || (
819 #if FF_API_GET_BUFFER
820 !avctx->get_buffer &&
822 avctx->get_buffer2 == avcodec_default_get_buffer2)) {
823 FF_ENABLE_DEPRECATION_WARNINGS
824 err = ff_get_buffer(avctx, f->f, flags);
826 pthread_mutex_lock(&p->progress_mutex);
827 p->requested_frame = f->f;
828 p->requested_flags = flags;
829 p->state = STATE_GET_BUFFER;
830 pthread_cond_broadcast(&p->progress_cond);
832 while (p->state != STATE_SETTING_UP)
833 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
837 pthread_mutex_unlock(&p->progress_mutex);
840 FF_DISABLE_DEPRECATION_WARNINGS
841 if (!THREAD_SAFE_CALLBACKS(avctx) && !avctx->codec->update_thread_context)
842 ff_thread_finish_setup(avctx);
843 FF_ENABLE_DEPRECATION_WARNINGS
845 av_buffer_unref(&f->progress);
847 pthread_mutex_unlock(&p->parent->buffer_mutex);
852 enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
854 enum AVPixelFormat res;
855 PerThreadContext *p = avctx->internal->thread_ctx;
856 if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
857 avctx->get_format == avcodec_default_get_format)
858 return ff_get_format(avctx, fmt);
859 if (p->state != STATE_SETTING_UP) {
860 av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
863 pthread_mutex_lock(&p->progress_mutex);
864 p->available_formats = fmt;
865 p->state = STATE_GET_FORMAT;
866 pthread_cond_broadcast(&p->progress_cond);
868 while (p->state != STATE_SETTING_UP)
869 pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
871 res = p->result_format;
873 pthread_mutex_unlock(&p->progress_mutex);
878 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
880 int ret = thread_get_buffer_internal(avctx, f, flags);
882 av_log(avctx, AV_LOG_ERROR, "thread_get_buffer() failed\n");
886 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
888 PerThreadContext *p = avctx->internal->thread_ctx;
889 FrameThreadContext *fctx;
891 FF_DISABLE_DEPRECATION_WARNINGS
892 int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) ||
893 avctx->thread_safe_callbacks ||
895 #if FF_API_GET_BUFFER
896 !avctx->get_buffer &&
898 avctx->get_buffer2 == avcodec_default_get_buffer2);
899 FF_ENABLE_DEPRECATION_WARNINGS
901 if (!f->f || !f->f->buf[0])
904 if (avctx->debug & FF_DEBUG_BUFFERS)
905 av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f);
907 av_buffer_unref(&f->progress);
910 if (can_direct_free) {
911 av_frame_unref(f->f);
916 pthread_mutex_lock(&fctx->buffer_mutex);
918 if (p->num_released_buffers + 1 >= INT_MAX / sizeof(*p->released_buffers))
920 tmp = av_fast_realloc(p->released_buffers, &p->released_buffers_allocated,
921 (p->num_released_buffers + 1) *
922 sizeof(*p->released_buffers));
925 p->released_buffers = tmp;
927 dst = &p->released_buffers[p->num_released_buffers];
928 av_frame_move_ref(dst, f->f);
930 p->num_released_buffers++;
933 pthread_mutex_unlock(&fctx->buffer_mutex);