blob: 421639527634ab6069ca44f42d6b31d702951fa3 [file] [log] [blame]
/*
* Copyright (c) 2019 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/pc/e2e/analyzer/video/quality_analyzing_video_decoder.h"
#include <cstdint>
#include <cstring>
#include <utility>
#include "absl/memory/memory.h"
#include "absl/types/optional.h"
#include "api/video/i420_buffer.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "rtc_base/logging.h"
#include "test/pc/e2e/analyzer/video/simulcast_dummy_buffer_helper.h"
namespace webrtc {
namespace webrtc_pc_e2e {
QualityAnalyzingVideoDecoder::QualityAnalyzingVideoDecoder(
int id,
std::unique_ptr<VideoDecoder> delegate,
EncodedImageDataExtractor* extractor,
VideoQualityAnalyzerInterface* analyzer)
: id_(id),
implementation_name_("AnalyzingDecoder-" +
std::string(delegate->ImplementationName())),
delegate_(std::move(delegate)),
extractor_(extractor),
analyzer_(analyzer) {
analyzing_callback_ = absl::make_unique<DecoderCallback>(this);
}
QualityAnalyzingVideoDecoder::~QualityAnalyzingVideoDecoder() = default;
int32_t QualityAnalyzingVideoDecoder::InitDecode(
const VideoCodec* codec_settings,
int32_t number_of_cores) {
return delegate_->InitDecode(codec_settings, number_of_cores);
}
int32_t QualityAnalyzingVideoDecoder::Decode(
const EncodedImage& input_image,
bool missing_frames,
int64_t render_time_ms) {
// Image extractor extracts id from provided EncodedImage and also returns
// the image with the original buffer. Buffer can be modified in place, so
// owner of original buffer will be responsible for deleting it, or extractor
// can create a new buffer. In such case extractor will be responsible for
// deleting it.
EncodedImageExtractionResult out = extractor_->ExtractData(input_image, id_);
if (out.discard) {
// To partly emulate behavior of Selective Forwarding Unit (SFU) in the
// test, on receiver side we will "discard" frames from irrelevant streams.
// When all encoded images were marked to discarded, black frame have to be
// returned. Because simulcast streams will be received by receiver as 3
// different independent streams we don't want that irrelevant streams
// affect video quality metrics and also we don't want to use CPU time to
// decode them to prevent regressions on relevant streams. Also we can't
// just drop frame, because in such case, receiving part will be confused
// with all frames missing and will request a key frame, which will result
// into extra load on network and sender side. Because of it, discarded
// image will be always decoded as black frame and will be passed to
// callback directly without reaching decoder and video quality analyzer.
//
// For more details see QualityAnalyzingVideoEncoder.
return analyzing_callback_->IrrelevantSimulcastStreamDecoded(
out.id, input_image.Timestamp());
}
EncodedImage* origin_image;
{
rtc::CritScope crit(&lock_);
// Store id to be able to retrieve it in analyzing callback.
timestamp_to_frame_id_.insert({input_image.Timestamp(), out.id});
// Store encoded image to prevent its destruction while it is used in
// decoder.
origin_image = &(
decoding_images_.insert({out.id, std::move(out.image)}).first->second);
}
// We can safely dereference |origin_image|, because it can be removed from
// the map only after |delegate_| Decode method will be invoked. Image will be
// removed inside DecodedImageCallback, which can be done on separate thread.
analyzer_->OnFrameReceived(out.id, *origin_image);
int32_t result =
delegate_->Decode(*origin_image, missing_frames, render_time_ms);
if (result != WEBRTC_VIDEO_CODEC_OK) {
// If delegate decoder failed, then cleanup data for this image.
{
rtc::CritScope crit(&lock_);
timestamp_to_frame_id_.erase(input_image.Timestamp());
decoding_images_.erase(out.id);
}
analyzer_->OnDecoderError(out.id, result);
}
return result;
}
int32_t QualityAnalyzingVideoDecoder::RegisterDecodeCompleteCallback(
DecodedImageCallback* callback) {
analyzing_callback_->SetDelegateCallback(callback);
return delegate_->RegisterDecodeCompleteCallback(analyzing_callback_.get());
}
int32_t QualityAnalyzingVideoDecoder::Release() {
rtc::CritScope crit(&lock_);
analyzing_callback_->SetDelegateCallback(nullptr);
timestamp_to_frame_id_.clear();
decoding_images_.clear();
return delegate_->Release();
}
bool QualityAnalyzingVideoDecoder::PrefersLateDecoding() const {
return delegate_->PrefersLateDecoding();
}
const char* QualityAnalyzingVideoDecoder::ImplementationName() const {
return implementation_name_.c_str();
}
QualityAnalyzingVideoDecoder::DecoderCallback::DecoderCallback(
QualityAnalyzingVideoDecoder* decoder)
: decoder_(decoder), delegate_callback_(nullptr) {}
QualityAnalyzingVideoDecoder::DecoderCallback::~DecoderCallback() = default;
void QualityAnalyzingVideoDecoder::DecoderCallback::SetDelegateCallback(
DecodedImageCallback* delegate) {
rtc::CritScope crit(&callback_lock_);
delegate_callback_ = delegate;
}
// We have to implement all next 3 methods because we don't know which one
// exactly is implemented in |delegate_callback_|, so we need to call the same
// method on |delegate_callback_|, as was called on |this| callback.
int32_t QualityAnalyzingVideoDecoder::DecoderCallback::Decoded(
VideoFrame& decodedImage) {
decoder_->OnFrameDecoded(&decodedImage, /*decode_time_ms=*/absl::nullopt,
/*qp=*/absl::nullopt);
rtc::CritScope crit(&callback_lock_);
RTC_DCHECK(delegate_callback_);
return delegate_callback_->Decoded(decodedImage);
}
int32_t QualityAnalyzingVideoDecoder::DecoderCallback::Decoded(
VideoFrame& decodedImage,
int64_t decode_time_ms) {
decoder_->OnFrameDecoded(&decodedImage, decode_time_ms, /*qp=*/absl::nullopt);
rtc::CritScope crit(&callback_lock_);
RTC_DCHECK(delegate_callback_);
return delegate_callback_->Decoded(decodedImage, decode_time_ms);
}
void QualityAnalyzingVideoDecoder::DecoderCallback::Decoded(
VideoFrame& decodedImage,
absl::optional<int32_t> decode_time_ms,
absl::optional<uint8_t> qp) {
decoder_->OnFrameDecoded(&decodedImage, decode_time_ms, qp);
rtc::CritScope crit(&callback_lock_);
RTC_DCHECK(delegate_callback_);
delegate_callback_->Decoded(decodedImage, decode_time_ms, qp);
}
int32_t
QualityAnalyzingVideoDecoder::DecoderCallback::IrrelevantSimulcastStreamDecoded(
uint16_t frame_id,
uint32_t timestamp_ms) {
webrtc::VideoFrame dummy_frame =
webrtc::VideoFrame::Builder()
.set_video_frame_buffer(GetDummyFrameBuffer())
.set_timestamp_rtp(timestamp_ms)
.set_id(frame_id)
.build();
rtc::CritScope crit(&callback_lock_);
RTC_DCHECK(delegate_callback_);
delegate_callback_->Decoded(dummy_frame, absl::nullopt, absl::nullopt);
return WEBRTC_VIDEO_CODEC_OK;
}
rtc::scoped_refptr<webrtc::VideoFrameBuffer>
QualityAnalyzingVideoDecoder::DecoderCallback::GetDummyFrameBuffer() {
if (!dummy_frame_buffer_) {
dummy_frame_buffer_ = CreateDummyFrameBuffer();
}
return dummy_frame_buffer_;
}
void QualityAnalyzingVideoDecoder::OnFrameDecoded(
VideoFrame* frame,
absl::optional<int32_t> decode_time_ms,
absl::optional<uint8_t> qp) {
uint16_t frame_id;
{
rtc::CritScope crit(&lock_);
auto it = timestamp_to_frame_id_.find(frame->timestamp());
if (it == timestamp_to_frame_id_.end()) {
// Ensure, that we have info about this frame. It can happen that for some
// reasons decoder response, that he failed to decode, when we were
// posting frame to it, but then call the callback for this frame.
RTC_LOG(LS_ERROR) << "QualityAnalyzingVideoDecoder::OnFrameDecoded: No "
"frame id for frame for frame->timestamp()="
<< frame->timestamp();
return;
}
frame_id = it->second;
timestamp_to_frame_id_.erase(it);
decoding_images_.erase(frame_id);
}
// Set frame id to the value, that was extracted from corresponding encoded
// image.
frame->set_id(frame_id);
analyzer_->OnFrameDecoded(*frame, decode_time_ms, qp);
}
QualityAnalyzingVideoDecoderFactory::QualityAnalyzingVideoDecoderFactory(
std::unique_ptr<VideoDecoderFactory> delegate,
IdGenerator<int>* id_generator,
EncodedImageDataExtractor* extractor,
VideoQualityAnalyzerInterface* analyzer)
: delegate_(std::move(delegate)),
id_generator_(id_generator),
extractor_(extractor),
analyzer_(analyzer) {}
QualityAnalyzingVideoDecoderFactory::~QualityAnalyzingVideoDecoderFactory() =
default;
std::vector<SdpVideoFormat>
QualityAnalyzingVideoDecoderFactory::GetSupportedFormats() const {
return delegate_->GetSupportedFormats();
}
std::unique_ptr<VideoDecoder>
QualityAnalyzingVideoDecoderFactory::CreateVideoDecoder(
const SdpVideoFormat& format) {
std::unique_ptr<VideoDecoder> decoder = delegate_->CreateVideoDecoder(format);
return absl::make_unique<QualityAnalyzingVideoDecoder>(
id_generator_->GetNextId(), std::move(decoder), extractor_, analyzer_);
}
std::unique_ptr<VideoDecoder>
QualityAnalyzingVideoDecoderFactory::LegacyCreateVideoDecoder(
const SdpVideoFormat& format,
const std::string& receive_stream_id) {
std::unique_ptr<VideoDecoder> decoder =
delegate_->LegacyCreateVideoDecoder(format, receive_stream_id);
return absl::make_unique<QualityAnalyzingVideoDecoder>(
id_generator_->GetNextId(), std::move(decoder), extractor_, analyzer_);
}
} // namespace webrtc_pc_e2e
} // namespace webrtc