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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.
*/
#ifndef TEST_TESTSUPPORT_IVF_VIDEO_FRAME_GENERATOR_H_
#define TEST_TESTSUPPORT_IVF_VIDEO_FRAME_GENERATOR_H_
#include <memory>
#include <string>
#include "absl/types/optional.h"
#include "api/test/frame_generator_interface.h"
#include "api/video/video_codec_type.h"
#include "api/video/video_frame.h"
#include "api/video_codecs/video_decoder.h"
#include "modules/video_coding/utility/ivf_file_reader.h"
#include "rtc_base/event.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/synchronization/sequence_checker.h"
namespace webrtc {
namespace test {
// All methods except constructor must be used from the same thread.
class IvfVideoFrameGenerator : public FrameGeneratorInterface {
public:
explicit IvfVideoFrameGenerator(const std::string& file_name);
~IvfVideoFrameGenerator() override;
VideoFrameData NextFrame() override;
void ChangeResolution(size_t width, size_t height) override;
private:
class DecodedCallback : public DecodedImageCallback {
public:
explicit DecodedCallback(IvfVideoFrameGenerator* reader)
: reader_(reader) {}
int32_t Decoded(VideoFrame& decoded_image) override;
int32_t Decoded(VideoFrame& decoded_image, int64_t decode_time_ms) override;
void Decoded(VideoFrame& decoded_image,
absl::optional<int32_t> decode_time_ms,
absl::optional<uint8_t> qp) override;
private:
IvfVideoFrameGenerator* const reader_;
};
void OnFrameDecoded(const VideoFrame& decoded_frame);
static std::unique_ptr<VideoDecoder> CreateVideoDecoder(
VideoCodecType codec_type);
DecodedCallback callback_;
std::unique_ptr<IvfFileReader> file_reader_;
std::unique_ptr<VideoDecoder> video_decoder_;
size_t width_;
size_t height_;
// This lock is used to ensure that all API method will be called
// sequentially. It is required because we need to ensure that generator
// won't be destroyed while it is reading the next frame on another thread,
// because it will cause SIGSEGV when decoder callback will be invoked.
//
// FrameGenerator is injected into PeerConnection via some scoped_ref object
// and it can happen that the last pointer will be destroyed on the different
// thread comparing to the one from which frames were read.
Mutex lock_;
// This lock is used to sync between sending and receiving frame from decoder.
// We can't reuse |lock_| because then generator can be destroyed between
// frame was sent to decoder and decoder callback was invoked.
Mutex frame_decode_lock_;
rtc::Event next_frame_decoded_;
absl::optional<VideoFrame> next_frame_ RTC_GUARDED_BY(frame_decode_lock_);
};
} // namespace test
} // namespace webrtc
#endif // TEST_TESTSUPPORT_IVF_VIDEO_FRAME_GENERATOR_H_
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