diff options
Diffstat (limited to 'media/ffvpx/libavcodec/pthread_frame.c')
| -rw-r--r-- | media/ffvpx/libavcodec/pthread_frame.c | 900 |
1 files changed, 900 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/pthread_frame.c b/media/ffvpx/libavcodec/pthread_frame.c new file mode 100644 index 000000000..a10fcbfe7 --- /dev/null +++ b/media/ffvpx/libavcodec/pthread_frame.c @@ -0,0 +1,900 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Frame multithreading support functions + * @see doc/multithreading.txt + */ + +#include "config.h" + +#include <stdint.h> + +#include "avcodec.h" +#include "internal.h" +#include "pthread_internal.h" +#include "thread.h" +#include "version.h" + +#include "libavutil/avassert.h" +#include "libavutil/buffer.h" +#include "libavutil/common.h" +#include "libavutil/cpu.h" +#include "libavutil/frame.h" +#include "libavutil/internal.h" +#include "libavutil/log.h" +#include "libavutil/mem.h" +#include "libavutil/opt.h" +#include "libavutil/thread.h" + +#if defined(MOZ_TSAN) +typedef _Atomic(int) atomic_int; +#else +typedef volatile int atomic_int; +#endif + +/** + * Context used by codec threads and stored in their AVCodecInternal thread_ctx. + */ +typedef enum { + STATE_INPUT_READY, ///< Set when the thread is awaiting a packet. + STATE_SETTING_UP, ///< Set before the codec has called ff_thread_finish_setup(). + STATE_GET_BUFFER, /**< + * Set when the codec calls get_buffer(). + * State is returned to STATE_SETTING_UP afterwards. + */ + STATE_GET_FORMAT, /**< + * Set when the codec calls get_format(). + * State is returned to STATE_SETTING_UP afterwards. + */ + STATE_SETUP_FINISHED ///< Set after the codec has called ff_thread_finish_setup(). +} State; + +typedef struct PerThreadContext { + struct FrameThreadContext *parent; + + pthread_t thread; + int thread_init; + pthread_cond_t input_cond; ///< Used to wait for a new packet from the main thread. + pthread_cond_t progress_cond; ///< Used by child threads to wait for progress to change. + pthread_cond_t output_cond; ///< Used by the main thread to wait for frames to finish. + + pthread_mutex_t mutex; ///< Mutex used to protect the contents of the PerThreadContext. + pthread_mutex_t progress_mutex; ///< Mutex used to protect frame progress values and progress_cond. + + AVCodecContext *avctx; ///< Context used to decode packets passed to this thread. + + AVPacket avpkt; ///< Input packet (for decoding) or output (for encoding). + + AVFrame *frame; ///< Output frame (for decoding) or input (for encoding). + int got_frame; ///< The output of got_picture_ptr from the last avcodec_decode_video() call. + int result; ///< The result of the last codec decode/encode() call. + + atomic_int state; + + /** + * Array of frames passed to ff_thread_release_buffer(). + * Frames are released after all threads referencing them are finished. + */ + AVFrame *released_buffers; + int num_released_buffers; + int released_buffers_allocated; + + AVFrame *requested_frame; ///< AVFrame the codec passed to get_buffer() + int requested_flags; ///< flags passed to get_buffer() for requested_frame + + const enum AVPixelFormat *available_formats; ///< Format array for get_format() + enum AVPixelFormat result_format; ///< get_format() result + + int die; ///< Set when the thread should exit. +} PerThreadContext; + +/** + * Context stored in the client AVCodecInternal thread_ctx. + */ +typedef struct FrameThreadContext { + PerThreadContext *threads; ///< The contexts for each thread. + PerThreadContext *prev_thread; ///< The last thread submit_packet() was called on. + + pthread_mutex_t buffer_mutex; ///< Mutex used to protect get/release_buffer(). + + int next_decoding; ///< The next context to submit a packet to. + int next_finished; ///< The next context to return output from. + + int delaying; /**< + * Set for the first N packets, where N is the number of threads. + * While it is set, ff_thread_en/decode_frame won't return any results. + */ +} FrameThreadContext; + +#define THREAD_SAFE_CALLBACKS(avctx) \ +((avctx)->thread_safe_callbacks || (avctx)->get_buffer2 == avcodec_default_get_buffer2) + +/** + * Codec worker thread. + * + * Automatically calls ff_thread_finish_setup() if the codec does + * not provide an update_thread_context method, or if the codec returns + * before calling it. + */ +static attribute_align_arg void *frame_worker_thread(void *arg) +{ + PerThreadContext *p = arg; + AVCodecContext *avctx = p->avctx; + const AVCodec *codec = avctx->codec; + + pthread_mutex_lock(&p->mutex); + while (1) { + while (p->state == STATE_INPUT_READY && !p->die) + pthread_cond_wait(&p->input_cond, &p->mutex); + + if (p->die) break; + + if (!codec->update_thread_context && THREAD_SAFE_CALLBACKS(avctx)) + ff_thread_finish_setup(avctx); + + av_frame_unref(p->frame); + p->got_frame = 0; + p->result = codec->decode(avctx, p->frame, &p->got_frame, &p->avpkt); + + if ((p->result < 0 || !p->got_frame) && p->frame->buf[0]) { + if (avctx->internal->allocate_progress) + av_log(avctx, AV_LOG_ERROR, "A frame threaded decoder did not " + "free the frame on failure. This is a bug, please report it.\n"); + av_frame_unref(p->frame); + } + + if (p->state == STATE_SETTING_UP) ff_thread_finish_setup(avctx); + + pthread_mutex_lock(&p->progress_mutex); +#if 0 //BUFREF-FIXME + for (i = 0; i < MAX_BUFFERS; i++) + if (p->progress_used[i] && (p->got_frame || p->result<0 || avctx->codec_id != AV_CODEC_ID_H264)) { + p->progress[i][0] = INT_MAX; + p->progress[i][1] = INT_MAX; + } +#endif + p->state = STATE_INPUT_READY; + + pthread_cond_broadcast(&p->progress_cond); + pthread_cond_signal(&p->output_cond); + pthread_mutex_unlock(&p->progress_mutex); + } + pthread_mutex_unlock(&p->mutex); + + return NULL; +} + +/** + * Update the next thread's AVCodecContext with values from the reference thread's context. + * + * @param dst The destination context. + * @param src The source context. + * @param for_user 0 if the destination is a codec thread, 1 if the destination is the user's thread + * @return 0 on success, negative error code on failure + */ +static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src, int for_user) +{ + int err = 0; + + if (dst != src) { + dst->time_base = src->time_base; + dst->framerate = src->framerate; + dst->width = src->width; + dst->height = src->height; + dst->pix_fmt = src->pix_fmt; + + dst->coded_width = src->coded_width; + dst->coded_height = src->coded_height; + + dst->has_b_frames = src->has_b_frames; + dst->idct_algo = src->idct_algo; + + dst->bits_per_coded_sample = src->bits_per_coded_sample; + dst->sample_aspect_ratio = src->sample_aspect_ratio; +#if FF_API_AFD +FF_DISABLE_DEPRECATION_WARNINGS + dst->dtg_active_format = src->dtg_active_format; +FF_ENABLE_DEPRECATION_WARNINGS +#endif /* FF_API_AFD */ + + dst->profile = src->profile; + dst->level = src->level; + + dst->bits_per_raw_sample = src->bits_per_raw_sample; + dst->ticks_per_frame = src->ticks_per_frame; + dst->color_primaries = src->color_primaries; + + dst->color_trc = src->color_trc; + dst->colorspace = src->colorspace; + dst->color_range = src->color_range; + dst->chroma_sample_location = src->chroma_sample_location; + + dst->hwaccel = src->hwaccel; + dst->hwaccel_context = src->hwaccel_context; + + dst->channels = src->channels; + dst->sample_rate = src->sample_rate; + dst->sample_fmt = src->sample_fmt; + dst->channel_layout = src->channel_layout; + dst->internal->hwaccel_priv_data = src->internal->hwaccel_priv_data; + } + + if (for_user) { + dst->delay = src->thread_count - 1; +#if FF_API_CODED_FRAME +FF_DISABLE_DEPRECATION_WARNINGS + dst->coded_frame = src->coded_frame; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + } else { + if (dst->codec->update_thread_context) + err = dst->codec->update_thread_context(dst, src); + } + + return err; +} + +/** + * Update the next thread's AVCodecContext with values set by the user. + * + * @param dst The destination context. + * @param src The source context. + * @return 0 on success, negative error code on failure + */ +static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src) +{ +#define copy_fields(s, e) memcpy(&dst->s, &src->s, (char*)&dst->e - (char*)&dst->s); + dst->flags = src->flags; + + dst->draw_horiz_band= src->draw_horiz_band; + dst->get_buffer2 = src->get_buffer2; + + dst->opaque = src->opaque; + dst->debug = src->debug; + dst->debug_mv = src->debug_mv; + + dst->slice_flags = src->slice_flags; + dst->flags2 = src->flags2; + + copy_fields(skip_loop_filter, subtitle_header); + + dst->frame_number = src->frame_number; + dst->reordered_opaque = src->reordered_opaque; + dst->thread_safe_callbacks = src->thread_safe_callbacks; + + if (src->slice_count && src->slice_offset) { + if (dst->slice_count < src->slice_count) { + int err = av_reallocp_array(&dst->slice_offset, src->slice_count, + sizeof(*dst->slice_offset)); + if (err < 0) + return err; + } + memcpy(dst->slice_offset, src->slice_offset, + src->slice_count * sizeof(*dst->slice_offset)); + } + dst->slice_count = src->slice_count; + return 0; +#undef copy_fields +} + +/// Releases the buffers that this decoding thread was the last user of. +static void release_delayed_buffers(PerThreadContext *p) +{ + FrameThreadContext *fctx = p->parent; + + while (p->num_released_buffers > 0) { + AVFrame *f; + + pthread_mutex_lock(&fctx->buffer_mutex); + + // fix extended data in case the caller screwed it up + av_assert0(p->avctx->codec_type == AVMEDIA_TYPE_VIDEO || + p->avctx->codec_type == AVMEDIA_TYPE_AUDIO); + f = &p->released_buffers[--p->num_released_buffers]; + f->extended_data = f->data; + av_frame_unref(f); + + pthread_mutex_unlock(&fctx->buffer_mutex); + } +} + +static int submit_packet(PerThreadContext *p, AVPacket *avpkt) +{ + FrameThreadContext *fctx = p->parent; + PerThreadContext *prev_thread = fctx->prev_thread; + const AVCodec *codec = p->avctx->codec; + + if (!avpkt->size && !(codec->capabilities & AV_CODEC_CAP_DELAY)) + return 0; + + pthread_mutex_lock(&p->mutex); + + release_delayed_buffers(p); + + if (prev_thread) { + int err; + if (prev_thread->state == STATE_SETTING_UP) { + pthread_mutex_lock(&prev_thread->progress_mutex); + while (prev_thread->state == STATE_SETTING_UP) + pthread_cond_wait(&prev_thread->progress_cond, &prev_thread->progress_mutex); + pthread_mutex_unlock(&prev_thread->progress_mutex); + } + + err = update_context_from_thread(p->avctx, prev_thread->avctx, 0); + if (err) { + pthread_mutex_unlock(&p->mutex); + return err; + } + } + + av_packet_unref(&p->avpkt); + av_packet_ref(&p->avpkt, avpkt); + + p->state = STATE_SETTING_UP; + pthread_cond_signal(&p->input_cond); + pthread_mutex_unlock(&p->mutex); + + /* + * If the client doesn't have a thread-safe get_buffer(), + * then decoding threads call back to the main thread, + * and it calls back to the client here. + */ + + if (!p->avctx->thread_safe_callbacks && ( + p->avctx->get_format != avcodec_default_get_format || + p->avctx->get_buffer2 != avcodec_default_get_buffer2)) { + while (p->state != STATE_SETUP_FINISHED && p->state != STATE_INPUT_READY) { + int call_done = 1; + pthread_mutex_lock(&p->progress_mutex); + while (p->state == STATE_SETTING_UP) + pthread_cond_wait(&p->progress_cond, &p->progress_mutex); + + State p_state = (State)p->state; + switch (p_state) { + case STATE_GET_BUFFER: + p->result = ff_get_buffer(p->avctx, p->requested_frame, p->requested_flags); + break; + case STATE_GET_FORMAT: + p->result_format = ff_get_format(p->avctx, p->available_formats); + break; + default: + call_done = 0; + break; + } + if (call_done) { + p->state = STATE_SETTING_UP; + pthread_cond_signal(&p->progress_cond); + } + pthread_mutex_unlock(&p->progress_mutex); + } + } + + fctx->prev_thread = p; + fctx->next_decoding++; + + return 0; +} + +int ff_thread_decode_frame(AVCodecContext *avctx, + AVFrame *picture, int *got_picture_ptr, + AVPacket *avpkt) +{ + FrameThreadContext *fctx = avctx->internal->thread_ctx; + int finished = fctx->next_finished; + PerThreadContext *p; + int err; + + /* + * Submit a packet to the next decoding thread. + */ + + p = &fctx->threads[fctx->next_decoding]; + err = update_context_from_user(p->avctx, avctx); + if (err) return err; + err = submit_packet(p, avpkt); + if (err) return err; + + /* + * If we're still receiving the initial packets, don't return a frame. + */ + + if (fctx->next_decoding > (avctx->thread_count-1-(avctx->codec_id == AV_CODEC_ID_FFV1))) + fctx->delaying = 0; + + if (fctx->delaying) { + *got_picture_ptr=0; + if (avpkt->size) + return avpkt->size; + } + + /* + * Return the next available frame from the oldest thread. + * If we're at the end of the stream, then we have to skip threads that + * didn't output a frame, because we don't want to accidentally signal + * EOF (avpkt->size == 0 && *got_picture_ptr == 0). + */ + + do { + p = &fctx->threads[finished++]; + + if (p->state != STATE_INPUT_READY) { + pthread_mutex_lock(&p->progress_mutex); + while (p->state != STATE_INPUT_READY) + pthread_cond_wait(&p->output_cond, &p->progress_mutex); + pthread_mutex_unlock(&p->progress_mutex); + } + + av_frame_move_ref(picture, p->frame); + *got_picture_ptr = p->got_frame; + picture->pkt_dts = p->avpkt.dts; + + if (p->result < 0) + err = p->result; + + /* + * A later call with avkpt->size == 0 may loop over all threads, + * including this one, searching for a frame to return before being + * stopped by the "finished != fctx->next_finished" condition. + * Make sure we don't mistakenly return the same frame again. + */ + p->got_frame = 0; + + if (finished >= avctx->thread_count) finished = 0; + } while (!avpkt->size && !*got_picture_ptr && finished != fctx->next_finished); + + update_context_from_thread(avctx, p->avctx, 1); + + if (fctx->next_decoding >= avctx->thread_count) fctx->next_decoding = 0; + + fctx->next_finished = finished; + + /* + * When no frame was found while flushing, but an error occurred in + * any thread, return it instead of 0. + * Otherwise the error can get lost. + */ + if (!avpkt->size && !*got_picture_ptr) + return err; + + /* return the size of the consumed packet if no error occurred */ + return (p->result >= 0) ? avpkt->size : p->result; +} + +void ff_thread_report_progress(ThreadFrame *f, int n, int field) +{ + PerThreadContext *p; + atomic_int *progress = f->progress ? (atomic_int*)f->progress->data : NULL; + + if (!progress || progress[field] >= n) return; + + p = f->owner->internal->thread_ctx; + + if (f->owner->debug&FF_DEBUG_THREADS) + av_log(f->owner, AV_LOG_DEBUG, "%p finished %d field %d\n", progress, n, field); + + pthread_mutex_lock(&p->progress_mutex); + progress[field] = n; + pthread_cond_broadcast(&p->progress_cond); + pthread_mutex_unlock(&p->progress_mutex); +} + +void ff_thread_await_progress(ThreadFrame *f, int n, int field) +{ + PerThreadContext *p; + atomic_int *progress = f->progress ? (atomic_int*)f->progress->data : NULL; + + if (!progress || progress[field] >= n) return; + + p = f->owner->internal->thread_ctx; + + if (f->owner->debug&FF_DEBUG_THREADS) + av_log(f->owner, AV_LOG_DEBUG, "thread awaiting %d field %d from %p\n", n, field, progress); + + pthread_mutex_lock(&p->progress_mutex); + while (progress[field] < n) + pthread_cond_wait(&p->progress_cond, &p->progress_mutex); + pthread_mutex_unlock(&p->progress_mutex); +} + +void ff_thread_finish_setup(AVCodecContext *avctx) { + PerThreadContext *p = avctx->internal->thread_ctx; + + if (!(avctx->active_thread_type&FF_THREAD_FRAME)) return; + + if(p->state == STATE_SETUP_FINISHED){ + av_log(avctx, AV_LOG_WARNING, "Multiple ff_thread_finish_setup() calls\n"); + } + + pthread_mutex_lock(&p->progress_mutex); + p->state = STATE_SETUP_FINISHED; + pthread_cond_broadcast(&p->progress_cond); + pthread_mutex_unlock(&p->progress_mutex); +} + +/// Waits for all threads to finish. +static void park_frame_worker_threads(FrameThreadContext *fctx, int thread_count) +{ + int i; + + for (i = 0; i < thread_count; i++) { + PerThreadContext *p = &fctx->threads[i]; + + if (p->state != STATE_INPUT_READY) { + pthread_mutex_lock(&p->progress_mutex); + while (p->state != STATE_INPUT_READY) + pthread_cond_wait(&p->output_cond, &p->progress_mutex); + pthread_mutex_unlock(&p->progress_mutex); + } + p->got_frame = 0; + } +} + +void ff_frame_thread_free(AVCodecContext *avctx, int thread_count) +{ + FrameThreadContext *fctx = avctx->internal->thread_ctx; + const AVCodec *codec = avctx->codec; + int i; + + park_frame_worker_threads(fctx, thread_count); + + if (fctx->prev_thread && fctx->prev_thread != fctx->threads) + if (update_context_from_thread(fctx->threads->avctx, fctx->prev_thread->avctx, 0) < 0) { + av_log(avctx, AV_LOG_ERROR, "Final thread update failed\n"); + fctx->prev_thread->avctx->internal->is_copy = fctx->threads->avctx->internal->is_copy; + fctx->threads->avctx->internal->is_copy = 1; + } + + for (i = 0; i < thread_count; i++) { + PerThreadContext *p = &fctx->threads[i]; + + pthread_mutex_lock(&p->mutex); + p->die = 1; + pthread_cond_signal(&p->input_cond); + pthread_mutex_unlock(&p->mutex); + + if (p->thread_init) + pthread_join(p->thread, NULL); + p->thread_init=0; + + if (codec->close && p->avctx) + codec->close(p->avctx); + + release_delayed_buffers(p); + av_frame_free(&p->frame); + } + + for (i = 0; i < thread_count; i++) { + PerThreadContext *p = &fctx->threads[i]; + + pthread_mutex_destroy(&p->mutex); + pthread_mutex_destroy(&p->progress_mutex); + pthread_cond_destroy(&p->input_cond); + pthread_cond_destroy(&p->progress_cond); + pthread_cond_destroy(&p->output_cond); + av_packet_unref(&p->avpkt); + av_freep(&p->released_buffers); + + if (i && p->avctx) { + av_freep(&p->avctx->priv_data); + av_freep(&p->avctx->slice_offset); + } + + if (p->avctx) + av_freep(&p->avctx->internal); + av_freep(&p->avctx); + } + + av_freep(&fctx->threads); + pthread_mutex_destroy(&fctx->buffer_mutex); + av_freep(&avctx->internal->thread_ctx); + + if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) + av_opt_free(avctx->priv_data); + avctx->codec = NULL; +} + +int ff_frame_thread_init(AVCodecContext *avctx) +{ + int thread_count = avctx->thread_count; + const AVCodec *codec = avctx->codec; + AVCodecContext *src = avctx; + FrameThreadContext *fctx; + int i, err = 0; + +#if HAVE_W32THREADS + w32thread_init(); +#endif + + if (!thread_count) { + int nb_cpus = av_cpu_count(); + if ((avctx->debug & (FF_DEBUG_VIS_QP | FF_DEBUG_VIS_MB_TYPE)) || avctx->debug_mv) + nb_cpus = 1; + // use number of cores + 1 as thread count if there is more than one + if (nb_cpus > 1) + thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS); + else + thread_count = avctx->thread_count = 1; + } + + if (thread_count <= 1) { + avctx->active_thread_type = 0; + return 0; + } + + avctx->internal->thread_ctx = fctx = av_mallocz(sizeof(FrameThreadContext)); + if (!fctx) + return AVERROR(ENOMEM); + + fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext)); + if (!fctx->threads) { + av_freep(&avctx->internal->thread_ctx); + return AVERROR(ENOMEM); + } + + pthread_mutex_init(&fctx->buffer_mutex, NULL); + fctx->delaying = 1; + + for (i = 0; i < thread_count; i++) { + AVCodecContext *copy = av_malloc(sizeof(AVCodecContext)); + PerThreadContext *p = &fctx->threads[i]; + + pthread_mutex_init(&p->mutex, NULL); + pthread_mutex_init(&p->progress_mutex, NULL); + pthread_cond_init(&p->input_cond, NULL); + pthread_cond_init(&p->progress_cond, NULL); + pthread_cond_init(&p->output_cond, NULL); + + p->frame = av_frame_alloc(); + if (!p->frame) { + av_freep(©); + err = AVERROR(ENOMEM); + goto error; + } + + p->parent = fctx; + p->avctx = copy; + + if (!copy) { + err = AVERROR(ENOMEM); + goto error; + } + + *copy = *src; + + copy->internal = av_malloc(sizeof(AVCodecInternal)); + if (!copy->internal) { + copy->priv_data = NULL; + err = AVERROR(ENOMEM); + goto error; + } + *copy->internal = *src->internal; + copy->internal->thread_ctx = p; + copy->internal->pkt = &p->avpkt; + + if (!i) { + src = copy; + + if (codec->init) + err = codec->init(copy); + + update_context_from_thread(avctx, copy, 1); + } else { + copy->priv_data = av_malloc(codec->priv_data_size); + if (!copy->priv_data) { + err = AVERROR(ENOMEM); + goto error; + } + memcpy(copy->priv_data, src->priv_data, codec->priv_data_size); + copy->internal->is_copy = 1; + + if (codec->init_thread_copy) + err = codec->init_thread_copy(copy); + } + + if (err) goto error; + + err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p)); + p->thread_init= !err; + if(!p->thread_init) + goto error; + } + + return 0; + +error: + ff_frame_thread_free(avctx, i+1); + + return err; +} + +void ff_thread_flush(AVCodecContext *avctx) +{ + int i; + FrameThreadContext *fctx = avctx->internal->thread_ctx; + + if (!fctx) return; + + park_frame_worker_threads(fctx, avctx->thread_count); + if (fctx->prev_thread) { + if (fctx->prev_thread != &fctx->threads[0]) + update_context_from_thread(fctx->threads[0].avctx, fctx->prev_thread->avctx, 0); + } + + fctx->next_decoding = fctx->next_finished = 0; + fctx->delaying = 1; + fctx->prev_thread = NULL; + for (i = 0; i < avctx->thread_count; i++) { + PerThreadContext *p = &fctx->threads[i]; + // Make sure decode flush calls with size=0 won't return old frames + p->got_frame = 0; + av_frame_unref(p->frame); + + release_delayed_buffers(p); + + if (avctx->codec->flush) + avctx->codec->flush(p->avctx); + } +} + +int ff_thread_can_start_frame(AVCodecContext *avctx) +{ + PerThreadContext *p = avctx->internal->thread_ctx; + if ((avctx->active_thread_type&FF_THREAD_FRAME) && p->state != STATE_SETTING_UP && + (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) { + return 0; + } + return 1; +} + +static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags) +{ + PerThreadContext *p = avctx->internal->thread_ctx; + int err; + + f->owner = avctx; + + ff_init_buffer_info(avctx, f->f); + + if (!(avctx->active_thread_type & FF_THREAD_FRAME)) + return ff_get_buffer(avctx, f->f, flags); + + if (p->state != STATE_SETTING_UP && + (avctx->codec->update_thread_context || !THREAD_SAFE_CALLBACKS(avctx))) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() cannot be called after ff_thread_finish_setup()\n"); + return -1; + } + + if (avctx->internal->allocate_progress) { + int *progress; + f->progress = av_buffer_alloc(2 * sizeof(int)); + if (!f->progress) { + return AVERROR(ENOMEM); + } + progress = (int*)f->progress->data; + + progress[0] = progress[1] = -1; + } + + pthread_mutex_lock(&p->parent->buffer_mutex); + if (avctx->thread_safe_callbacks || + avctx->get_buffer2 == avcodec_default_get_buffer2) { + err = ff_get_buffer(avctx, f->f, flags); + } else { + pthread_mutex_lock(&p->progress_mutex); + p->requested_frame = f->f; + p->requested_flags = flags; + p->state = STATE_GET_BUFFER; + pthread_cond_broadcast(&p->progress_cond); + + while (p->state != STATE_SETTING_UP) + pthread_cond_wait(&p->progress_cond, &p->progress_mutex); + + err = p->result; + + pthread_mutex_unlock(&p->progress_mutex); + + } + if (!THREAD_SAFE_CALLBACKS(avctx) && !avctx->codec->update_thread_context) + ff_thread_finish_setup(avctx); + if (err) + av_buffer_unref(&f->progress); + + pthread_mutex_unlock(&p->parent->buffer_mutex); + + return err; +} + +enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt) +{ + enum AVPixelFormat res; + PerThreadContext *p = avctx->internal->thread_ctx; + if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks || + avctx->get_format == avcodec_default_get_format) + return ff_get_format(avctx, fmt); + if (p->state != STATE_SETTING_UP) { + av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n"); + return -1; + } + pthread_mutex_lock(&p->progress_mutex); + p->available_formats = fmt; + p->state = STATE_GET_FORMAT; + pthread_cond_broadcast(&p->progress_cond); + + while (p->state != STATE_SETTING_UP) + pthread_cond_wait(&p->progress_cond, &p->progress_mutex); + + res = p->result_format; + + pthread_mutex_unlock(&p->progress_mutex); + + return res; +} + +int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags) +{ + int ret = thread_get_buffer_internal(avctx, f, flags); + if (ret < 0) + av_log(avctx, AV_LOG_ERROR, "thread_get_buffer() failed\n"); + return ret; +} + +void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f) +{ + PerThreadContext *p = avctx->internal->thread_ctx; + FrameThreadContext *fctx; + AVFrame *dst, *tmp; + int can_direct_free = !(avctx->active_thread_type & FF_THREAD_FRAME) || + avctx->thread_safe_callbacks || + avctx->get_buffer2 == avcodec_default_get_buffer2; + + if (!f->f || !f->f->buf[0]) + return; + + if (avctx->debug & FF_DEBUG_BUFFERS) + av_log(avctx, AV_LOG_DEBUG, "thread_release_buffer called on pic %p\n", f); + + av_buffer_unref(&f->progress); + f->owner = NULL; + + if (can_direct_free) { + av_frame_unref(f->f); + return; + } + + fctx = p->parent; + pthread_mutex_lock(&fctx->buffer_mutex); + + if (p->num_released_buffers + 1 >= INT_MAX / sizeof(*p->released_buffers)) + goto fail; + tmp = av_fast_realloc(p->released_buffers, &p->released_buffers_allocated, + (p->num_released_buffers + 1) * + sizeof(*p->released_buffers)); + if (!tmp) + goto fail; + p->released_buffers = tmp; + + dst = &p->released_buffers[p->num_released_buffers]; + av_frame_move_ref(dst, f->f); + + p->num_released_buffers++; + +fail: + pthread_mutex_unlock(&fctx->buffer_mutex); +} |