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/*
* 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/testsupport/ivf_video_frame_generator.h"
#include <limits>
#include "api/video/encoded_image.h"
#include "api/video/i420_buffer.h"
#include "api/video_codecs/video_codec.h"
#include "media/base/media_constants.h"
#include "modules/video_coding/codecs/h264/include/h264.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "modules/video_coding/codecs/vp9/include/vp9.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "rtc_base/checks.h"
#include "rtc_base/system/file_wrapper.h"
namespace webrtc {
namespace test {
namespace {
constexpr TimeDelta kMaxNextFrameWaitTimeout = TimeDelta::Seconds(1);
} // namespace
IvfVideoFrameGenerator::IvfVideoFrameGenerator(const std::string& file_name)
: callback_(this),
file_reader_(IvfFileReader::Create(FileWrapper::OpenReadOnly(file_name))),
video_decoder_(CreateVideoDecoder(file_reader_->GetVideoCodecType())),
width_(file_reader_->GetFrameWidth()),
height_(file_reader_->GetFrameHeight()) {
RTC_CHECK(video_decoder_) << "No decoder found for file's video codec type";
VideoDecoder::Settings decoder_settings;
decoder_settings.set_codec_type(file_reader_->GetVideoCodecType());
decoder_settings.set_max_render_resolution(
{file_reader_->GetFrameWidth(), file_reader_->GetFrameHeight()});
// Set buffer pool size to max value to ensure that if users of generator,
// ex. test frameworks, will retain frames for quite a long time, decoder
// won't crash with buffers pool overflow error.
decoder_settings.set_buffer_pool_size(std::numeric_limits<int>::max());
RTC_CHECK_EQ(video_decoder_->RegisterDecodeCompleteCallback(&callback_),
WEBRTC_VIDEO_CODEC_OK);
RTC_CHECK(video_decoder_->Configure(decoder_settings));
}
IvfVideoFrameGenerator::~IvfVideoFrameGenerator() {
MutexLock lock(&lock_);
if (!file_reader_) {
return;
}
file_reader_->Close();
file_reader_.reset();
// Reset decoder to prevent it from async access to `this`.
video_decoder_.reset();
{
MutexLock frame_lock(&frame_decode_lock_);
next_frame_ = absl::nullopt;
// Set event in case another thread is waiting on it.
next_frame_decoded_.Set();
}
}
FrameGeneratorInterface::VideoFrameData IvfVideoFrameGenerator::NextFrame() {
MutexLock lock(&lock_);
next_frame_decoded_.Reset();
RTC_CHECK(file_reader_);
if (!file_reader_->HasMoreFrames()) {
file_reader_->Reset();
}
absl::optional<EncodedImage> image = file_reader_->NextFrame();
RTC_CHECK(image);
// Last parameter is undocumented and there is no usage of it found.
RTC_CHECK_EQ(WEBRTC_VIDEO_CODEC_OK,
video_decoder_->Decode(*image, /*missing_frames=*/false,
/*render_time_ms=*/0));
bool decoded = next_frame_decoded_.Wait(kMaxNextFrameWaitTimeout);
RTC_CHECK(decoded) << "Failed to decode next frame in "
<< kMaxNextFrameWaitTimeout << ". Can't continue";
MutexLock frame_lock(&frame_decode_lock_);
rtc::scoped_refptr<VideoFrameBuffer> buffer =
next_frame_->video_frame_buffer();
if (width_ != static_cast<size_t>(buffer->width()) ||
height_ != static_cast<size_t>(buffer->height())) {
// Video adapter has requested a down-scale. Allocate a new buffer and
// return scaled version.
rtc::scoped_refptr<I420Buffer> scaled_buffer =
I420Buffer::Create(width_, height_);
scaled_buffer->ScaleFrom(*buffer->ToI420());
buffer = scaled_buffer;
}
return VideoFrameData(buffer, next_frame_->update_rect());
}
void IvfVideoFrameGenerator::ChangeResolution(size_t width, size_t height) {
MutexLock lock(&lock_);
width_ = width;
height_ = height;
}
int32_t IvfVideoFrameGenerator::DecodedCallback::Decoded(
VideoFrame& decoded_image) {
Decoded(decoded_image, 0, 0);
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t IvfVideoFrameGenerator::DecodedCallback::Decoded(
VideoFrame& decoded_image,
int64_t decode_time_ms) {
Decoded(decoded_image, decode_time_ms, 0);
return WEBRTC_VIDEO_CODEC_OK;
}
void IvfVideoFrameGenerator::DecodedCallback::Decoded(
VideoFrame& decoded_image,
absl::optional<int32_t> decode_time_ms,
absl::optional<uint8_t> qp) {
reader_->OnFrameDecoded(decoded_image);
}
void IvfVideoFrameGenerator::OnFrameDecoded(const VideoFrame& decoded_frame) {
MutexLock lock(&frame_decode_lock_);
next_frame_ = decoded_frame;
next_frame_decoded_.Set();
}
std::unique_ptr<VideoDecoder> IvfVideoFrameGenerator::CreateVideoDecoder(
VideoCodecType codec_type) {
if (codec_type == VideoCodecType::kVideoCodecVP8) {
return VP8Decoder::Create();
}
if (codec_type == VideoCodecType::kVideoCodecVP9) {
return VP9Decoder::Create();
}
if (codec_type == VideoCodecType::kVideoCodecH264) {
return H264Decoder::Create();
}
return nullptr;
}
} // namespace test
} // namespace webrtc
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