122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stddef.h>
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#include <cstdint>
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#include <vector>
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#include "modules/video_coding/video_receiver2.h"
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#include "api/video_codecs/video_codec.h"
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#include "api/video_codecs/video_decoder.h"
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#include "modules/video_coding/decoder_database.h"
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#include "modules/video_coding/encoded_frame.h"
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#include "modules/video_coding/generic_decoder.h"
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#include "modules/video_coding/include/video_coding_defines.h"
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#include "modules/video_coding/timing.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/trace_event.h"
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#include "system_wrappers/include/clock.h"
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namespace webrtc {
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VideoReceiver2::VideoReceiver2(Clock* clock, VCMTiming* timing)
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: clock_(clock),
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timing_(timing),
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decodedFrameCallback_(timing_, clock_),
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codecDataBase_() {
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decoder_thread_checker_.Detach();
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}
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VideoReceiver2::~VideoReceiver2() {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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}
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// Register a receive callback. Will be called whenever there is a new frame
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// ready for rendering.
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int32_t VideoReceiver2::RegisterReceiveCallback(
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VCMReceiveCallback* receiveCallback) {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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RTC_DCHECK(!IsDecoderThreadRunning());
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// This value is set before the decoder thread starts and unset after
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// the decoder thread has been stopped.
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decodedFrameCallback_.SetUserReceiveCallback(receiveCallback);
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return VCM_OK;
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}
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// Register an externally defined decoder object.
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void VideoReceiver2::RegisterExternalDecoder(VideoDecoder* externalDecoder,
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uint8_t payloadType) {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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RTC_DCHECK(!IsDecoderThreadRunning());
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if (externalDecoder == nullptr) {
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RTC_CHECK(codecDataBase_.DeregisterExternalDecoder(payloadType));
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return;
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}
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codecDataBase_.RegisterExternalDecoder(externalDecoder, payloadType);
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}
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void VideoReceiver2::DecoderThreadStarting() {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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RTC_DCHECK(!IsDecoderThreadRunning());
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#if RTC_DCHECK_IS_ON
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decoder_thread_is_running_ = true;
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#endif
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}
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void VideoReceiver2::DecoderThreadStopped() {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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RTC_DCHECK(IsDecoderThreadRunning());
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#if RTC_DCHECK_IS_ON
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decoder_thread_is_running_ = false;
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decoder_thread_checker_.Detach();
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#endif
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}
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// Must be called from inside the receive side critical section.
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int32_t VideoReceiver2::Decode(const VCMEncodedFrame* frame) {
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RTC_DCHECK_RUN_ON(&decoder_thread_checker_);
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TRACE_EVENT0("webrtc", "VideoReceiver2::Decode");
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// Change decoder if payload type has changed
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VCMGenericDecoder* decoder =
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codecDataBase_.GetDecoder(*frame, &decodedFrameCallback_);
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if (decoder == nullptr) {
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return VCM_NO_CODEC_REGISTERED;
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}
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return decoder->Decode(*frame, clock_->CurrentTime());
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}
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// Register possible receive codecs, can be called multiple times
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int32_t VideoReceiver2::RegisterReceiveCodec(uint8_t payload_type,
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const VideoCodec* receiveCodec,
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int32_t numberOfCores) {
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RTC_DCHECK_RUN_ON(&construction_thread_checker_);
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RTC_DCHECK(!IsDecoderThreadRunning());
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if (receiveCodec == nullptr) {
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return VCM_PARAMETER_ERROR;
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}
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if (!codecDataBase_.RegisterReceiveCodec(payload_type, receiveCodec,
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numberOfCores)) {
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return -1;
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}
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return 0;
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}
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bool VideoReceiver2::IsDecoderThreadRunning() {
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#if RTC_DCHECK_IS_ON
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return decoder_thread_is_running_;
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#else
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return true;
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#endif
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}
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} // namespace webrtc
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