blob: c368eb50f0d0f1b16681784151be5f869bbde26a [file] [log] [blame]
/*
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "test/fake_vp8_encoder.h"
#include <algorithm>
#include "absl/types/optional.h"
#include "api/video_codecs/create_vp8_temporal_layers.h"
#include "api/video_codecs/vp8_temporal_layers.h"
#include "common_types.h" // NOLINT(build/include)
#include "modules/video_coding/codecs/interface/common_constants.h"
#include "modules/video_coding/include/video_codec_interface.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "modules/video_coding/utility/simulcast_utility.h"
namespace {
// Write width and height to the payload the same way as the real encoder does.
// It requires that |payload| has a size of at least kMinPayLoadHeaderLength.
void WriteFakeVp8(unsigned char* payload,
int width,
int height,
bool key_frame) {
payload[0] = key_frame ? 0 : 0x01;
if (key_frame) {
payload[9] = (height & 0x3F00) >> 8;
payload[8] = (height & 0x00FF);
payload[7] = (width & 0x3F00) >> 8;
payload[6] = (width & 0x00FF);
}
}
} // namespace
namespace webrtc {
namespace test {
FakeVP8Encoder::FakeVP8Encoder(Clock* clock)
: FakeEncoder(clock), callback_(nullptr) {
FakeEncoder::RegisterEncodeCompleteCallback(this);
sequence_checker_.Detach();
}
int32_t FakeVP8Encoder::RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
callback_ = callback;
return 0;
}
int32_t FakeVP8Encoder::InitEncode(const VideoCodec* config,
int32_t number_of_cores,
size_t max_payload_size) {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
auto result =
FakeEncoder::InitEncode(config, number_of_cores, max_payload_size);
if (result != WEBRTC_VIDEO_CODEC_OK) {
return result;
}
SetupTemporalLayers(*config);
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t FakeVP8Encoder::Release() {
auto result = FakeEncoder::Release();
sequence_checker_.Detach();
return result;
}
void FakeVP8Encoder::SetupTemporalLayers(const VideoCodec& codec) {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
int num_streams = SimulcastUtility::NumberOfSimulcastStreams(codec);
for (int i = 0; i < num_streams; ++i) {
Vp8TemporalLayersType type;
int num_temporal_layers =
SimulcastUtility::NumberOfTemporalLayers(codec, i);
if (SimulcastUtility::IsConferenceModeScreenshare(codec) && i == 0) {
type = Vp8TemporalLayersType::kBitrateDynamic;
// Legacy screenshare layers supports max 2 layers.
num_temporal_layers = std::max<int>(2, num_temporal_layers);
} else {
type = Vp8TemporalLayersType::kFixedPattern;
}
temporal_layers_.emplace_back(
CreateVp8TemporalLayers(type, num_temporal_layers));
}
}
void FakeVP8Encoder::PopulateCodecSpecific(CodecSpecificInfo* codec_specific,
size_t size_bytes,
FrameType frame_type,
int stream_idx,
uint32_t timestamp) {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
codec_specific->codecType = kVideoCodecVP8;
CodecSpecificInfoVP8* vp8Info = &(codec_specific->codecSpecific.VP8);
vp8Info->keyIdx = kNoKeyIdx;
vp8Info->nonReference = false;
temporal_layers_[stream_idx]->OnEncodeDone(
timestamp, size_bytes, frame_type == kVideoFrameKey, -1, vp8Info);
}
EncodedImageCallback::Result FakeVP8Encoder::OnEncodedImage(
const EncodedImage& encoded_image,
const CodecSpecificInfo* codec_specific_info,
const RTPFragmentationHeader* fragments) {
RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
uint8_t stream_idx = encoded_image.SpatialIndex().value_or(0);
CodecSpecificInfo overrided_specific_info;
temporal_layers_[stream_idx]->UpdateLayerConfig(encoded_image.Timestamp());
PopulateCodecSpecific(&overrided_specific_info, encoded_image.size(),
encoded_image._frameType, stream_idx,
encoded_image.Timestamp());
// Write width and height to the payload the same way as the real encoder
// does.
WriteFakeVp8(encoded_image.buffer(), encoded_image._encodedWidth,
encoded_image._encodedHeight,
encoded_image._frameType == kVideoFrameKey);
return callback_->OnEncodedImage(encoded_image, &overrided_specific_info,
fragments);
}
VideoEncoder::EncoderInfo FakeVP8Encoder::GetEncoderInfo() const {
EncoderInfo info;
info.implementation_name = "FakeVp8Encoder";
return info;
}
} // namespace test
} // namespace webrtc