da2c4cede0
When _codecDataBase.SetSendCodec() fails, the encoder may be deleted. This is however not reflected in _encoder, which then becomes a dangling pointer to the deleted object. BUG=2384 R=stefan@webrtc.org Review URL: https://webrtc-codereview.appspot.com/2229004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4765 4adac7df-926f-26a2-2b94-8c16560cd09d
423 lines
13 KiB
C++
423 lines
13 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 "webrtc/common_types.h"
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#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
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#include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
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#include "webrtc/modules/video_coding/main/source/encoded_frame.h"
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#include "webrtc/modules/video_coding/main/source/video_coding_impl.h"
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#include "webrtc/system_wrappers/interface/clock.h"
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namespace webrtc {
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namespace vcm {
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VideoSender::VideoSender(const int32_t id, Clock* clock)
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: _id(id),
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clock_(clock),
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_sendCritSect(CriticalSectionWrapper::CreateCriticalSection()),
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_encoder(),
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_encodedFrameCallback(),
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_nextFrameTypes(1, kVideoFrameDelta),
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_mediaOpt(id, clock_),
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_sendStatsCallback(NULL),
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_encoderInputFile(NULL),
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_codecDataBase(id),
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frame_dropper_enabled_(true),
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_sendStatsTimer(1000, clock_) {}
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VideoSender::~VideoSender() {
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delete _sendCritSect;
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if (_encoderInputFile != NULL) {
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fclose(_encoderInputFile);
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}
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}
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int32_t VideoSender::Process() {
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int32_t returnValue = VCM_OK;
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if (_sendStatsTimer.TimeUntilProcess() == 0) {
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_sendStatsTimer.Processed();
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if (_sendStatsCallback != NULL) {
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uint32_t bitRate;
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uint32_t frameRate;
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{
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CriticalSectionScoped cs(_sendCritSect);
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bitRate = _mediaOpt.SentBitRate();
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frameRate = _mediaOpt.SentFrameRate();
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}
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_sendStatsCallback->SendStatistics(bitRate, frameRate);
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}
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}
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return returnValue;
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}
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// Reset send side to initial state - all components
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int32_t VideoSender::InitializeSender() {
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CriticalSectionScoped cs(_sendCritSect);
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_codecDataBase.ResetSender();
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_encoder = NULL;
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_encodedFrameCallback.SetTransportCallback(NULL);
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// setting default bitRate and frameRate to 0
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_mediaOpt.SetEncodingData(kVideoCodecUnknown, 0, 0, 0, 0, 0, 0);
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_mediaOpt.Reset(); // Resetting frame dropper
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return VCM_OK;
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}
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int32_t VideoSender::TimeUntilNextProcess() {
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return _sendStatsTimer.TimeUntilProcess();
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}
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// Register the send codec to be used.
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int32_t VideoSender::RegisterSendCodec(const VideoCodec* sendCodec,
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uint32_t numberOfCores,
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uint32_t maxPayloadSize) {
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CriticalSectionScoped cs(_sendCritSect);
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if (sendCodec == NULL) {
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return VCM_PARAMETER_ERROR;
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}
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bool ret = _codecDataBase.SetSendCodec(
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sendCodec, numberOfCores, maxPayloadSize, &_encodedFrameCallback);
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// Update encoder regardless of result to make sure that we're not holding on
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// to a deleted instance.
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_encoder = _codecDataBase.GetEncoder();
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if (!ret) {
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WEBRTC_TRACE(webrtc::kTraceError,
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webrtc::kTraceVideoCoding,
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VCMId(_id),
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"Failed to initialize encoder");
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return VCM_CODEC_ERROR;
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}
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int numLayers = (sendCodec->codecType != kVideoCodecVP8)
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? 1
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: sendCodec->codecSpecific.VP8.numberOfTemporalLayers;
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// If we have screensharing and we have layers, we disable frame dropper.
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bool disable_frame_dropper =
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numLayers > 1 && sendCodec->mode == kScreensharing;
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if (disable_frame_dropper) {
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_mediaOpt.EnableFrameDropper(false);
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} else if (frame_dropper_enabled_) {
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_mediaOpt.EnableFrameDropper(true);
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}
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_nextFrameTypes.clear();
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_nextFrameTypes.resize(VCM_MAX(sendCodec->numberOfSimulcastStreams, 1),
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kVideoFrameDelta);
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_mediaOpt.SetEncodingData(sendCodec->CodecType,
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sendCodec->maxBitrate * 1000,
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sendCodec->maxFramerate * 1000,
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sendCodec->startBitrate * 1000,
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sendCodec->width,
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sendCodec->height,
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numLayers);
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_mediaOpt.SetMtu(maxPayloadSize);
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return VCM_OK;
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}
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// Get current send codec
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int32_t VideoSender::SendCodec(VideoCodec* currentSendCodec) const {
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CriticalSectionScoped cs(_sendCritSect);
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if (currentSendCodec == NULL) {
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return VCM_PARAMETER_ERROR;
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}
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return _codecDataBase.SendCodec(currentSendCodec) ? 0 : -1;
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}
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// Get the current send codec type
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VideoCodecType VideoSender::SendCodec() const {
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CriticalSectionScoped cs(_sendCritSect);
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return _codecDataBase.SendCodec();
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}
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// Register an external decoder object.
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// This can not be used together with external decoder callbacks.
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int32_t VideoSender::RegisterExternalEncoder(VideoEncoder* externalEncoder,
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uint8_t payloadType,
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bool internalSource /*= false*/) {
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CriticalSectionScoped cs(_sendCritSect);
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if (externalEncoder == NULL) {
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bool wasSendCodec = false;
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const bool ret =
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_codecDataBase.DeregisterExternalEncoder(payloadType, &wasSendCodec);
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if (wasSendCodec) {
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// Make sure the VCM doesn't use the de-registered codec
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_encoder = NULL;
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}
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return ret ? 0 : -1;
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}
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_codecDataBase.RegisterExternalEncoder(
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externalEncoder, payloadType, internalSource);
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return 0;
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}
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// Get codec config parameters
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int32_t VideoSender::CodecConfigParameters(uint8_t* buffer, int32_t size) {
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CriticalSectionScoped cs(_sendCritSect);
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if (_encoder != NULL) {
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return _encoder->CodecConfigParameters(buffer, size);
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}
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return VCM_UNINITIALIZED;
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}
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// Get encode bitrate
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int VideoSender::Bitrate(unsigned int* bitrate) const {
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CriticalSectionScoped cs(_sendCritSect);
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// return the bit rate which the encoder is set to
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if (!_encoder) {
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return VCM_UNINITIALIZED;
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}
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*bitrate = _encoder->BitRate();
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return 0;
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}
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// Get encode frame rate
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int VideoSender::FrameRate(unsigned int* framerate) const {
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CriticalSectionScoped cs(_sendCritSect);
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// input frame rate, not compensated
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if (!_encoder) {
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return VCM_UNINITIALIZED;
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}
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*framerate = _encoder->FrameRate();
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return 0;
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}
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// Set channel parameters
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int32_t VideoSender::SetChannelParameters(uint32_t target_bitrate,
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uint8_t lossRate,
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uint32_t rtt) {
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int32_t ret = 0;
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{
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CriticalSectionScoped sendCs(_sendCritSect);
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uint32_t targetRate =
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_mediaOpt.SetTargetRates(target_bitrate, lossRate, rtt);
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if (_encoder != NULL) {
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ret = _encoder->SetChannelParameters(lossRate, rtt);
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if (ret < 0) {
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return ret;
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}
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ret = (int32_t)_encoder->SetRates(targetRate, _mediaOpt.InputFrameRate());
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if (ret < 0) {
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return ret;
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}
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} else {
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return VCM_UNINITIALIZED;
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} // encoder
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} // send side
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return VCM_OK;
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}
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int32_t VideoSender::RegisterTransportCallback(
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VCMPacketizationCallback* transport) {
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CriticalSectionScoped cs(_sendCritSect);
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_encodedFrameCallback.SetMediaOpt(&_mediaOpt);
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_encodedFrameCallback.SetTransportCallback(transport);
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return VCM_OK;
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}
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// Register video output information callback which will be called to deliver
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// information about the video stream produced by the encoder, for instance the
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// average frame rate and bit rate.
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int32_t VideoSender::RegisterSendStatisticsCallback(
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VCMSendStatisticsCallback* sendStats) {
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CriticalSectionScoped cs(_sendCritSect);
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_sendStatsCallback = sendStats;
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return VCM_OK;
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}
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// Register a video quality settings callback which will be called when frame
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// rate/dimensions need to be updated for video quality optimization
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int32_t VideoSender::RegisterVideoQMCallback(
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VCMQMSettingsCallback* videoQMSettings) {
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CriticalSectionScoped cs(_sendCritSect);
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return _mediaOpt.RegisterVideoQMCallback(videoQMSettings);
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}
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// Register a video protection callback which will be called to deliver the
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// requested FEC rate and NACK status (on/off).
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int32_t VideoSender::RegisterProtectionCallback(
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VCMProtectionCallback* protection) {
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CriticalSectionScoped cs(_sendCritSect);
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_mediaOpt.RegisterProtectionCallback(protection);
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return VCM_OK;
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}
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// Enable or disable a video protection method.
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// Note: This API should be deprecated, as it does not offer a distinction
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// between the protection method and decoding with or without errors. If such a
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// behavior is desired, use the following API: SetReceiverRobustnessMode.
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int32_t VideoSender::SetVideoProtection(VCMVideoProtection videoProtection,
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bool enable) {
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switch (videoProtection) {
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case kProtectionNack:
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case kProtectionNackSender: {
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CriticalSectionScoped cs(_sendCritSect);
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_mediaOpt.EnableProtectionMethod(enable, media_optimization::kNack);
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break;
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}
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case kProtectionNackFEC: {
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CriticalSectionScoped cs(_sendCritSect);
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_mediaOpt.EnableProtectionMethod(enable, media_optimization::kNackFec);
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break;
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}
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case kProtectionFEC: {
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CriticalSectionScoped cs(_sendCritSect);
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_mediaOpt.EnableProtectionMethod(enable, media_optimization::kFec);
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break;
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}
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case kProtectionPeriodicKeyFrames: {
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CriticalSectionScoped cs(_sendCritSect);
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return _codecDataBase.SetPeriodicKeyFrames(enable) ? 0 : -1;
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break;
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}
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case kProtectionNackReceiver:
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case kProtectionDualDecoder:
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case kProtectionKeyOnLoss:
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case kProtectionKeyOnKeyLoss:
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// Ignore decoder modes.
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return VCM_OK;
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}
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return VCM_OK;
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}
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// Add one raw video frame to the encoder, blocking.
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int32_t VideoSender::AddVideoFrame(const I420VideoFrame& videoFrame,
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const VideoContentMetrics* contentMetrics,
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const CodecSpecificInfo* codecSpecificInfo) {
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CriticalSectionScoped cs(_sendCritSect);
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if (_encoder == NULL) {
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return VCM_UNINITIALIZED;
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}
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// TODO(holmer): Add support for dropping frames per stream. Currently we
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// only have one frame dropper for all streams.
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if (_nextFrameTypes[0] == kFrameEmpty) {
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return VCM_OK;
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}
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_mediaOpt.UpdateIncomingFrameRate();
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if (_mediaOpt.DropFrame()) {
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WEBRTC_TRACE(webrtc::kTraceStream,
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webrtc::kTraceVideoCoding,
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VCMId(_id),
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"Drop frame due to bitrate");
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} else {
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_mediaOpt.UpdateContentData(contentMetrics);
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int32_t ret =
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_encoder->Encode(videoFrame, codecSpecificInfo, _nextFrameTypes);
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if (_encoderInputFile != NULL) {
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if (PrintI420VideoFrame(videoFrame, _encoderInputFile) < 0) {
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return -1;
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}
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}
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if (ret < 0) {
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WEBRTC_TRACE(webrtc::kTraceError,
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webrtc::kTraceVideoCoding,
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VCMId(_id),
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"Encode error: %d",
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ret);
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return ret;
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}
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for (size_t i = 0; i < _nextFrameTypes.size(); ++i) {
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_nextFrameTypes[i] = kVideoFrameDelta; // Default frame type.
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}
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}
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return VCM_OK;
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}
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int32_t VideoSender::IntraFrameRequest(int stream_index) {
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CriticalSectionScoped cs(_sendCritSect);
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if (stream_index < 0 ||
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static_cast<unsigned int>(stream_index) >= _nextFrameTypes.size()) {
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return -1;
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}
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_nextFrameTypes[stream_index] = kVideoFrameKey;
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if (_encoder != NULL && _encoder->InternalSource()) {
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// Try to request the frame if we have an external encoder with
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// internal source since AddVideoFrame never will be called.
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if (_encoder->RequestFrame(_nextFrameTypes) == WEBRTC_VIDEO_CODEC_OK) {
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_nextFrameTypes[stream_index] = kVideoFrameDelta;
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}
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}
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return VCM_OK;
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}
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int32_t VideoSender::EnableFrameDropper(bool enable) {
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CriticalSectionScoped cs(_sendCritSect);
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frame_dropper_enabled_ = enable;
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_mediaOpt.EnableFrameDropper(enable);
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return VCM_OK;
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}
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int32_t VideoSender::SentFrameCount(VCMFrameCount* frameCount) const {
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CriticalSectionScoped cs(_sendCritSect);
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return _mediaOpt.SentFrameCount(*frameCount);
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}
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int VideoSender::SetSenderNackMode(SenderNackMode mode) {
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CriticalSectionScoped cs(_sendCritSect);
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switch (mode) {
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case VideoCodingModule::kNackNone:
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_mediaOpt.EnableProtectionMethod(false, media_optimization::kNack);
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break;
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case VideoCodingModule::kNackAll:
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_mediaOpt.EnableProtectionMethod(true, media_optimization::kNack);
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break;
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case VideoCodingModule::kNackSelective:
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return VCM_NOT_IMPLEMENTED;
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break;
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}
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return VCM_OK;
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}
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int VideoSender::SetSenderReferenceSelection(bool enable) {
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return VCM_NOT_IMPLEMENTED;
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}
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int VideoSender::SetSenderFEC(bool enable) {
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CriticalSectionScoped cs(_sendCritSect);
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_mediaOpt.EnableProtectionMethod(enable, media_optimization::kFec);
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return VCM_OK;
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}
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int VideoSender::SetSenderKeyFramePeriod(int periodMs) {
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return VCM_NOT_IMPLEMENTED;
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}
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int VideoSender::StartDebugRecording(const char* file_name_utf8) {
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CriticalSectionScoped cs(_sendCritSect);
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_encoderInputFile = fopen(file_name_utf8, "wb");
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if (_encoderInputFile == NULL)
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return VCM_GENERAL_ERROR;
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return VCM_OK;
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}
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int VideoSender::StopDebugRecording() {
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CriticalSectionScoped cs(_sendCritSect);
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if (_encoderInputFile != NULL) {
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fclose(_encoderInputFile);
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_encoderInputFile = NULL;
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}
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return VCM_OK;
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}
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} // namespace vcm
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} // namespace webrtc
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