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Diffstat (limited to 'media/libaom/src/av1/decoder/dthread.c')
| -rw-r--r-- | media/libaom/src/av1/decoder/dthread.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/media/libaom/src/av1/decoder/dthread.c b/media/libaom/src/av1/decoder/dthread.c new file mode 100644 index 000000000..3946c787a --- /dev/null +++ b/media/libaom/src/av1/decoder/dthread.c @@ -0,0 +1,192 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include "config/aom_config.h" + +#include "aom_mem/aom_mem.h" +#include "av1/common/reconinter.h" +#include "av1/decoder/dthread.h" +#include "av1/decoder/decoder.h" + +// #define DEBUG_THREAD + +// TODO(hkuang): Clean up all the #ifdef in this file. +void av1_frameworker_lock_stats(AVxWorker *const worker) { +#if CONFIG_MULTITHREAD + FrameWorkerData *const worker_data = worker->data1; + pthread_mutex_lock(&worker_data->stats_mutex); +#else + (void)worker; +#endif +} + +void av1_frameworker_unlock_stats(AVxWorker *const worker) { +#if CONFIG_MULTITHREAD + FrameWorkerData *const worker_data = worker->data1; + pthread_mutex_unlock(&worker_data->stats_mutex); +#else + (void)worker; +#endif +} + +void av1_frameworker_signal_stats(AVxWorker *const worker) { +#if CONFIG_MULTITHREAD + FrameWorkerData *const worker_data = worker->data1; + +// TODO(hkuang): Fix the pthread_cond_broadcast in windows wrapper. +#if defined(_WIN32) && !HAVE_PTHREAD_H + pthread_cond_signal(&worker_data->stats_cond); +#else + pthread_cond_broadcast(&worker_data->stats_cond); +#endif + +#else + (void)worker; +#endif +} + +// This macro prevents thread_sanitizer from reporting known concurrent writes. +#if defined(__has_feature) +#if __has_feature(thread_sanitizer) +#define BUILDING_WITH_TSAN +#endif +#endif + +// TODO(hkuang): Remove worker parameter as it is only used in debug code. +void av1_frameworker_wait(AVxWorker *const worker, RefCntBuffer *const ref_buf, + int row) { +#if CONFIG_MULTITHREAD + if (!ref_buf) return; + +#ifndef BUILDING_WITH_TSAN + // The following line of code will get harmless tsan error but it is the key + // to get best performance. + if (ref_buf->row >= row && ref_buf->buf.corrupted != 1) return; +#endif + + { + // Find the worker thread that owns the reference frame. If the reference + // frame has been fully decoded, it may not have owner. + AVxWorker *const ref_worker = ref_buf->frame_worker_owner; + FrameWorkerData *const ref_worker_data = + (FrameWorkerData *)ref_worker->data1; + const AV1Decoder *const pbi = ref_worker_data->pbi; + +#ifdef DEBUG_THREAD + { + FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1; + printf("%d %p worker is waiting for %d %p worker (%d) ref %d \r\n", + worker_data->worker_id, worker, ref_worker_data->worker_id, + ref_buf->frame_worker_owner, row, ref_buf->row); + } +#endif + + av1_frameworker_lock_stats(ref_worker); + while (ref_buf->row < row && pbi->cur_buf == ref_buf && + ref_buf->buf.corrupted != 1) { + pthread_cond_wait(&ref_worker_data->stats_cond, + &ref_worker_data->stats_mutex); + } + + if (ref_buf->buf.corrupted == 1) { + FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1; + av1_frameworker_unlock_stats(ref_worker); + aom_internal_error(&worker_data->pbi->common.error, + AOM_CODEC_CORRUPT_FRAME, + "Worker %p failed to decode frame", worker); + } + av1_frameworker_unlock_stats(ref_worker); + } +#else + (void)worker; + (void)ref_buf; + (void)row; + (void)ref_buf; +#endif // CONFIG_MULTITHREAD +} + +void av1_frameworker_broadcast(RefCntBuffer *const buf, int row) { +#if CONFIG_MULTITHREAD + AVxWorker *worker = buf->frame_worker_owner; + +#ifdef DEBUG_THREAD + { + FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1; + printf("%d %p worker decode to (%d) \r\n", worker_data->worker_id, + buf->frame_worker_owner, row); + } +#endif + + av1_frameworker_lock_stats(worker); + buf->row = row; + av1_frameworker_signal_stats(worker); + av1_frameworker_unlock_stats(worker); +#else + (void)buf; + (void)row; +#endif // CONFIG_MULTITHREAD +} + +void av1_frameworker_copy_context(AVxWorker *const dst_worker, + AVxWorker *const src_worker) { +#if CONFIG_MULTITHREAD + FrameWorkerData *const src_worker_data = (FrameWorkerData *)src_worker->data1; + FrameWorkerData *const dst_worker_data = (FrameWorkerData *)dst_worker->data1; + AV1_COMMON *const src_cm = &src_worker_data->pbi->common; + AV1_COMMON *const dst_cm = &dst_worker_data->pbi->common; + int i; + + // Wait until source frame's context is ready. + av1_frameworker_lock_stats(src_worker); + while (!src_worker_data->frame_context_ready) { + pthread_cond_wait(&src_worker_data->stats_cond, + &src_worker_data->stats_mutex); + } + + dst_cm->last_frame_seg_map = src_cm->seg.enabled + ? src_cm->current_frame_seg_map + : src_cm->last_frame_seg_map; + dst_worker_data->pbi->need_resync = src_worker_data->pbi->need_resync; + av1_frameworker_unlock_stats(src_worker); + + dst_cm->seq_params.bit_depth = src_cm->seq_params.bit_depth; + dst_cm->seq_params.use_highbitdepth = src_cm->seq_params.use_highbitdepth; + // TODO(zoeliu): To handle parallel decoding + dst_cm->prev_frame = + src_cm->show_existing_frame ? src_cm->prev_frame : src_cm->cur_frame; + dst_cm->last_width = + !src_cm->show_existing_frame ? src_cm->width : src_cm->last_width; + dst_cm->last_height = + !src_cm->show_existing_frame ? src_cm->height : src_cm->last_height; + dst_cm->seq_params.subsampling_x = src_cm->seq_params.subsampling_x; + dst_cm->seq_params.subsampling_y = src_cm->seq_params.subsampling_y; + dst_cm->frame_type = src_cm->frame_type; + dst_cm->last_show_frame = !src_cm->show_existing_frame + ? src_cm->show_frame + : src_cm->last_show_frame; + for (i = 0; i < REF_FRAMES; ++i) + dst_cm->ref_frame_map[i] = src_cm->next_ref_frame_map[i]; + + memcpy(dst_cm->lf_info.lfthr, src_cm->lf_info.lfthr, + (MAX_LOOP_FILTER + 1) * sizeof(loop_filter_thresh)); + dst_cm->lf.sharpness_level = src_cm->lf.sharpness_level; + dst_cm->lf.filter_level[0] = src_cm->lf.filter_level[0]; + dst_cm->lf.filter_level[1] = src_cm->lf.filter_level[1]; + memcpy(dst_cm->lf.ref_deltas, src_cm->lf.ref_deltas, REF_FRAMES); + memcpy(dst_cm->lf.mode_deltas, src_cm->lf.mode_deltas, MAX_MODE_LF_DELTAS); + dst_cm->seg = src_cm->seg; + memcpy(dst_cm->frame_contexts, src_cm->frame_contexts, + FRAME_CONTEXTS * sizeof(dst_cm->frame_contexts[0])); +#else + (void)dst_worker; + (void)src_worker; +#endif // CONFIG_MULTITHREAD +} |