1 /*
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "video/video_stream_decoder2.h"
12
13 #include "modules/video_coding/video_receiver2.h"
14 #include "rtc_base/checks.h"
15 #include "video/receive_statistics_proxy2.h"
16
17 namespace webrtc {
18 namespace internal {
19
VideoStreamDecoder(VideoReceiver2 * video_receiver,ReceiveStatisticsProxy * receive_statistics_proxy,rtc::VideoSinkInterface<VideoFrame> * incoming_video_stream)20 VideoStreamDecoder::VideoStreamDecoder(
21 VideoReceiver2* video_receiver,
22 ReceiveStatisticsProxy* receive_statistics_proxy,
23 rtc::VideoSinkInterface<VideoFrame>* incoming_video_stream)
24 : video_receiver_(video_receiver),
25 receive_stats_callback_(receive_statistics_proxy),
26 incoming_video_stream_(incoming_video_stream) {
27 RTC_DCHECK(video_receiver_);
28
29 video_receiver_->RegisterReceiveCallback(this);
30 }
31
~VideoStreamDecoder()32 VideoStreamDecoder::~VideoStreamDecoder() {
33 // Note: There's an assumption at this point that the decoder thread is
34 // *not* running. If it was, then there could be a race for each of these
35 // callbacks.
36
37 // Unset all the callback pointers that we set in the ctor.
38 video_receiver_->RegisterReceiveCallback(nullptr);
39 }
40
41 // Do not acquire the lock of |video_receiver_| in this function. Decode
42 // callback won't necessarily be called from the decoding thread. The decoding
43 // thread may have held the lock when calling VideoDecoder::Decode, Reset, or
44 // Release. Acquiring the same lock in the path of decode callback can deadlock.
FrameToRender(VideoFrame & video_frame,absl::optional<uint8_t> qp,int32_t decode_time_ms,VideoContentType content_type)45 int32_t VideoStreamDecoder::FrameToRender(VideoFrame& video_frame,
46 absl::optional<uint8_t> qp,
47 int32_t decode_time_ms,
48 VideoContentType content_type) {
49 receive_stats_callback_->OnDecodedFrame(video_frame, qp, decode_time_ms,
50 content_type);
51 incoming_video_stream_->OnFrame(video_frame);
52 return 0;
53 }
54
OnDroppedFrames(uint32_t frames_dropped)55 void VideoStreamDecoder::OnDroppedFrames(uint32_t frames_dropped) {
56 receive_stats_callback_->OnDroppedFrames(frames_dropped);
57 }
58
OnIncomingPayloadType(int payload_type)59 void VideoStreamDecoder::OnIncomingPayloadType(int payload_type) {
60 receive_stats_callback_->OnIncomingPayloadType(payload_type);
61 }
62
OnDecoderImplementationName(const char * implementation_name)63 void VideoStreamDecoder::OnDecoderImplementationName(
64 const char* implementation_name) {
65 receive_stats_callback_->OnDecoderImplementationName(implementation_name);
66 }
67
68 } // namespace internal
69 } // namespace webrtc
70