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_decoder.h"
12
13 #include "modules/video_coding/video_receiver2.h"
14 #include "rtc_base/checks.h"
15 #include "video/receive_statistics_proxy.h"
16
17 namespace webrtc {
18
VideoStreamDecoder(VideoReceiver2 * video_receiver,ReceiveStatisticsProxy * receive_statistics_proxy,rtc::VideoSinkInterface<VideoFrame> * incoming_video_stream)19 VideoStreamDecoder::VideoStreamDecoder(
20 VideoReceiver2* video_receiver,
21 ReceiveStatisticsProxy* receive_statistics_proxy,
22 rtc::VideoSinkInterface<VideoFrame>* incoming_video_stream)
23 : video_receiver_(video_receiver),
24 receive_stats_callback_(receive_statistics_proxy),
25 incoming_video_stream_(incoming_video_stream) {
26 RTC_DCHECK(video_receiver_);
27
28 video_receiver_->RegisterReceiveCallback(this);
29 }
30
~VideoStreamDecoder()31 VideoStreamDecoder::~VideoStreamDecoder() {
32 // Note: There's an assumption at this point that the decoder thread is
33 // *not* running. If it was, then there could be a race for each of these
34 // callbacks.
35
36 // Unset all the callback pointers that we set in the ctor.
37 video_receiver_->RegisterReceiveCallback(nullptr);
38 }
39
40 // Do not acquire the lock of |video_receiver_| in this function. Decode
41 // callback won't necessarily be called from the decoding thread. The decoding
42 // thread may have held the lock when calling VideoDecoder::Decode, Reset, or
43 // 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)44 int32_t VideoStreamDecoder::FrameToRender(VideoFrame& video_frame,
45 absl::optional<uint8_t> qp,
46 int32_t decode_time_ms,
47 VideoContentType content_type) {
48 receive_stats_callback_->OnDecodedFrame(video_frame, qp, decode_time_ms,
49 content_type);
50 incoming_video_stream_->OnFrame(video_frame);
51 return 0;
52 }
53
OnDroppedFrames(uint32_t frames_dropped)54 void VideoStreamDecoder::OnDroppedFrames(uint32_t frames_dropped) {
55 receive_stats_callback_->OnDroppedFrames(frames_dropped);
56 }
57
OnIncomingPayloadType(int payload_type)58 void VideoStreamDecoder::OnIncomingPayloadType(int payload_type) {
59 receive_stats_callback_->OnIncomingPayloadType(payload_type);
60 }
61
OnDecoderImplementationName(const char * implementation_name)62 void VideoStreamDecoder::OnDecoderImplementationName(
63 const char* implementation_name) {
64 receive_stats_callback_->OnDecoderImplementationName(implementation_name);
65 }
66
67 } // namespace webrtc
68