blob: a8805fd7b54e4ccfa0e329521c2f459e272e2961 [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cast/sender/video_encoder_impl.h"
#include "third_party/libaom/libaom_buildflags.h"
#include <utility>
#include "base/bind.h"
#include "base/callback.h"
#include "base/callback_helpers.h"
#include "base/check.h"
#include "media/base/video_frame.h"
#if BUILDFLAG(ENABLE_LIBAOM)
#include "media/cast/sender/av1_encoder.h"
#endif
#include "media/cast/sender/fake_software_video_encoder.h"
#include "media/cast/sender/vpx_encoder.h"
namespace media {
namespace cast {
namespace {
void InitializeEncoderOnEncoderThread(
const scoped_refptr<CastEnvironment>& environment,
SoftwareVideoEncoder* encoder) {
DCHECK(environment->CurrentlyOn(CastEnvironment::VIDEO));
encoder->Initialize();
}
void EncodeVideoFrameOnEncoderThread(
scoped_refptr<CastEnvironment> environment,
SoftwareVideoEncoder* encoder,
scoped_refptr<media::VideoFrame> video_frame,
base::TimeTicks reference_time,
const VideoEncoderImpl::CodecDynamicConfig& dynamic_config,
VideoEncoderImpl::FrameEncodedCallback frame_encoded_callback) {
DCHECK(environment->CurrentlyOn(CastEnvironment::VIDEO));
if (dynamic_config.key_frame_requested) {
encoder->GenerateKeyFrame();
}
encoder->UpdateRates(dynamic_config.bit_rate);
std::unique_ptr<SenderEncodedFrame> encoded_frame(new SenderEncodedFrame());
encoder->Encode(std::move(video_frame), reference_time, encoded_frame.get());
encoded_frame->encode_completion_time = environment->Clock()->NowTicks();
environment->PostTask(CastEnvironment::MAIN, FROM_HERE,
base::BindOnce(std::move(frame_encoded_callback),
std::move(encoded_frame)));
}
} // namespace
// static
bool VideoEncoderImpl::IsSupported(const FrameSenderConfig& video_config) {
#ifndef OFFICIAL_BUILD
if (video_config.codec == CODEC_VIDEO_FAKE) {
return true;
}
#endif
return video_config.codec == CODEC_VIDEO_VP8 ||
video_config.codec == CODEC_VIDEO_VP9 ||
video_config.codec == CODEC_VIDEO_AV1;
}
VideoEncoderImpl::VideoEncoderImpl(
scoped_refptr<CastEnvironment> cast_environment,
const FrameSenderConfig& video_config,
StatusChangeCallback status_change_cb)
: cast_environment_(cast_environment) {
CHECK(cast_environment_->HasVideoThread());
DCHECK(status_change_cb);
if (video_config.codec == CODEC_VIDEO_VP8 ||
video_config.codec == CODEC_VIDEO_VP9) {
encoder_ = std::make_unique<VpxEncoder>(video_config);
cast_environment_->PostTask(
CastEnvironment::VIDEO, FROM_HERE,
base::BindOnce(&InitializeEncoderOnEncoderThread, cast_environment,
encoder_.get()));
#ifndef OFFICIAL_BUILD
} else if (video_config.codec == CODEC_VIDEO_FAKE) {
encoder_ = std::make_unique<FakeSoftwareVideoEncoder>(video_config);
#endif
#if BUILDFLAG(ENABLE_LIBAOM)
} else if (video_config.codec == CODEC_VIDEO_AV1) {
encoder_ = std::make_unique<Av1Encoder>(video_config);
cast_environment_->PostTask(
CastEnvironment::VIDEO, FROM_HERE,
base::BindOnce(&InitializeEncoderOnEncoderThread, cast_environment,
encoder_.get()));
#endif
} else {
DCHECK(false) << "Invalid config"; // Codec not supported.
}
dynamic_config_.key_frame_requested = false;
dynamic_config_.bit_rate = video_config.start_bitrate;
cast_environment_->PostTask(
CastEnvironment::MAIN, FROM_HERE,
base::BindOnce(
std::move(status_change_cb),
encoder_.get() ? STATUS_INITIALIZED : STATUS_UNSUPPORTED_CODEC));
}
VideoEncoderImpl::~VideoEncoderImpl() {
DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
if (encoder_) {
cast_environment_->PostTask(
CastEnvironment::VIDEO, FROM_HERE,
base::BindOnce(&base::DeletePointer<SoftwareVideoEncoder>,
encoder_.release()));
}
}
bool VideoEncoderImpl::EncodeVideoFrame(
scoped_refptr<media::VideoFrame> video_frame,
base::TimeTicks reference_time,
FrameEncodedCallback frame_encoded_callback) {
DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
DCHECK(!video_frame->visible_rect().IsEmpty());
DCHECK(!frame_encoded_callback.is_null());
cast_environment_->PostTask(
CastEnvironment::VIDEO, FROM_HERE,
base::BindOnce(&EncodeVideoFrameOnEncoderThread, cast_environment_,
encoder_.get(), std::move(video_frame), reference_time,
dynamic_config_, std::move(frame_encoded_callback)));
dynamic_config_.key_frame_requested = false;
return true;
}
// Inform the encoder about the new target bit rate.
void VideoEncoderImpl::SetBitRate(int new_bit_rate) {
dynamic_config_.bit_rate = new_bit_rate;
}
// Inform the encoder to encode the next frame as a key frame.
void VideoEncoderImpl::GenerateKeyFrame() {
dynamic_config_.key_frame_requested = true;
}
} // namespace cast
} // namespace media