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-rw-r--r--media/libvpx/vp9/decoder/vp9_dthread.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/media/libvpx/vp9/decoder/vp9_dthread.c b/media/libvpx/vp9/decoder/vp9_dthread.c
new file mode 100644
index 000000000..96a63bd9e
--- /dev/null
+++ b/media/libvpx/vp9/decoder/vp9_dthread.c
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "./vpx_config.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vp9/common/vp9_reconinter.h"
+#include "vp9/decoder/vp9_dthread.h"
+#include "vp9/decoder/vp9_decoder.h"
+
+// #define DEBUG_THREAD
+
+// TODO(hkuang): Clean up all the #ifdef in this file.
+void vp9_frameworker_lock_stats(VP9Worker *const worker) {
+#if CONFIG_MULTITHREAD
+ FrameWorkerData *const worker_data = worker->data1;
+ pthread_mutex_lock(&worker_data->stats_mutex);
+#else
+ (void)worker;
+#endif
+}
+
+void vp9_frameworker_unlock_stats(VP9Worker *const worker) {
+#if CONFIG_MULTITHREAD
+ FrameWorkerData *const worker_data = worker->data1;
+ pthread_mutex_unlock(&worker_data->stats_mutex);
+#else
+ (void)worker;
+#endif
+}
+
+void vp9_frameworker_signal_stats(VP9Worker *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 vp9_frameworker_wait(VP9Worker *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.
+ VP9Worker *const ref_worker = ref_buf->frame_worker_owner;
+ FrameWorkerData *const ref_worker_data =
+ (FrameWorkerData *)ref_worker->data1;
+ const VP9Decoder *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
+
+ vp9_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;
+ vp9_frameworker_unlock_stats(ref_worker);
+ vpx_internal_error(&worker_data->pbi->common.error,
+ VPX_CODEC_CORRUPT_FRAME,
+ "Worker %p failed to decode frame", worker);
+ }
+ vp9_frameworker_unlock_stats(ref_worker);
+ }
+#else
+ (void)worker;
+ (void)ref_buf;
+ (void)row;
+ (void)ref_buf;
+#endif // CONFIG_MULTITHREAD
+}
+
+void vp9_frameworker_broadcast(RefCntBuffer *const buf, int row) {
+#if CONFIG_MULTITHREAD
+ VP9Worker *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
+
+ vp9_frameworker_lock_stats(worker);
+ buf->row = row;
+ vp9_frameworker_signal_stats(worker);
+ vp9_frameworker_unlock_stats(worker);
+#else
+ (void)buf;
+ (void)row;
+#endif // CONFIG_MULTITHREAD
+}
+
+void vp9_frameworker_copy_context(VP9Worker *const dst_worker,
+ VP9Worker *const src_worker) {
+#if CONFIG_MULTITHREAD
+ FrameWorkerData *const src_worker_data = (FrameWorkerData *)src_worker->data1;
+ FrameWorkerData *const dst_worker_data = (FrameWorkerData *)dst_worker->data1;
+ VP9_COMMON *const src_cm = &src_worker_data->pbi->common;
+ VP9_COMMON *const dst_cm = &dst_worker_data->pbi->common;
+ int i;
+
+ // Wait until source frame's context is ready.
+ vp9_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;
+ vp9_frameworker_unlock_stats(src_worker);
+
+ dst_cm->bit_depth = src_cm->bit_depth;
+#if CONFIG_VP9_HIGHBITDEPTH
+ dst_cm->use_highbitdepth = src_cm->use_highbitdepth;
+#endif
+ 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->subsampling_x = src_cm->subsampling_x;
+ dst_cm->subsampling_y = src_cm->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.last_sharpness_level = src_cm->lf.sharpness_level;
+ dst_cm->lf.filter_level = src_cm->lf.filter_level;
+ memcpy(dst_cm->lf.ref_deltas, src_cm->lf.ref_deltas, MAX_REF_LF_DELTAS);
+ 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
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 05:23:46 +0000