Repo created

TMessagesProj/jni/voip/webrtc/video/video_stream_decoder2.cc

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+/*
+ *  Copyright (c) 2012 The WebRTC 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 "video/video_stream_decoder2.h"
+
+#include "api/video_codecs/video_decoder.h"
+#include "modules/video_coding/video_receiver2.h"
+#include "rtc_base/checks.h"
+#include "video/receive_statistics_proxy.h"
+
+namespace webrtc {
+namespace internal {
+
+VideoStreamDecoder::VideoStreamDecoder(
+    VideoReceiver2* video_receiver,
+    ReceiveStatisticsProxy* receive_statistics_proxy,
+    rtc::VideoSinkInterface<VideoFrame>* incoming_video_stream)
+    : video_receiver_(video_receiver),
+      receive_stats_callback_(receive_statistics_proxy),
+      incoming_video_stream_(incoming_video_stream) {
+  RTC_DCHECK(video_receiver_);
+
+  video_receiver_->RegisterReceiveCallback(this);
+}
+
+VideoStreamDecoder::~VideoStreamDecoder() {
+  // Note: There's an assumption at this point that the decoder thread is
+  // *not* running. If it was, then there could be a race for each of these
+  // callbacks.
+
+  // Unset all the callback pointers that we set in the ctor.
+  video_receiver_->RegisterReceiveCallback(nullptr);
+}
+
+// Do not acquire the lock of `video_receiver_` in this function. Decode
+// callback won't necessarily be called from the decoding thread. The decoding
+// thread may have held the lock when calling VideoDecoder::Decode, Reset, or
+// Release. Acquiring the same lock in the path of decode callback can deadlock.
+int32_t VideoStreamDecoder::FrameToRender(VideoFrame& video_frame,
+                                          absl::optional<uint8_t> qp,
+                                          TimeDelta decode_time,
+                                          VideoContentType content_type,
+                                          VideoFrameType frame_type) {
+  receive_stats_callback_->OnDecodedFrame(video_frame, qp, decode_time,
+                                          content_type, frame_type);
+  incoming_video_stream_->OnFrame(video_frame);
+  return 0;
+}
+
+void VideoStreamDecoder::OnDroppedFrames(uint32_t frames_dropped) {
+  receive_stats_callback_->OnDroppedFrames(frames_dropped);
+}
+
+void VideoStreamDecoder::OnIncomingPayloadType(int payload_type) {
+  receive_stats_callback_->OnIncomingPayloadType(payload_type);
+}
+
+void VideoStreamDecoder::OnDecoderInfoChanged(
+    const VideoDecoder::DecoderInfo& decoder_info) {
+  receive_stats_callback_->OnDecoderInfo(decoder_info);
+}
+
+}  // namespace internal
+}  // namespace webrtc