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/*
* Copyright (c) 2012 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 MODULES_VIDEO_CODING_GENERIC_DECODER_H_
#define MODULES_VIDEO_CODING_GENERIC_DECODER_H_
#include <cstdint>
#include <deque>
#include <string>
#include <utility>
#include "api/field_trials_view.h"
#include "api/sequence_checker.h"
#include "api/video_codecs/video_decoder.h"
#include "modules/video_coding/encoded_frame.h"
#include "modules/video_coding/timing/timing.h"
#include "rtc_base/synchronization/mutex.h"
namespace webrtc {
class VCMReceiveCallback;
struct FrameInfo {
FrameInfo() = default;
FrameInfo(const FrameInfo&) = delete;
FrameInfo& operator=(const FrameInfo&) = delete;
FrameInfo(FrameInfo&&) = default;
FrameInfo& operator=(FrameInfo&&) = default;
uint32_t rtp_timestamp;
// This is likely not optional, but some inputs seem to sometimes be negative.
// TODO(bugs.webrtc.org/13756): See if this can be replaced with Timestamp
// once all inputs to this field use Timestamp instead of an integer.
absl::optional<Timestamp> render_time;
absl::optional<Timestamp> decode_start;
VideoRotation rotation;
VideoContentType content_type;
EncodedImage::Timing timing;
int64_t ntp_time_ms;
RtpPacketInfos packet_infos;
// ColorSpace is not stored here, as it might be modified by decoders.
};
class VCMDecodedFrameCallback : public DecodedImageCallback {
public:
VCMDecodedFrameCallback(VCMTiming* timing,
Clock* clock,
const FieldTrialsView& field_trials);
~VCMDecodedFrameCallback() override;
void SetUserReceiveCallback(VCMReceiveCallback* receiveCallback);
VCMReceiveCallback* UserReceiveCallback();
int32_t Decoded(VideoFrame& decodedImage) override;
int32_t Decoded(VideoFrame& decodedImage, int64_t decode_time_ms) override;
void Decoded(VideoFrame& decodedImage,
absl::optional<int32_t> decode_time_ms,
absl::optional<uint8_t> qp) override;
void OnDecoderImplementationName(const char* implementation_name);
void Map(FrameInfo frameInfo);
void ClearTimestampMap();
private:
std::pair<absl::optional<FrameInfo>, size_t> FindFrameInfo(
uint32_t rtp_timestamp) RTC_EXCLUSIVE_LOCKS_REQUIRED(lock_);
SequenceChecker construction_thread_;
Clock* const _clock;
// This callback must be set before the decoder thread starts running
// and must only be unset when external threads (e.g decoder thread)
// have been stopped. Due to that, the variable should regarded as const
// while there are more than one threads involved, it must be set
// from the same thread, and therfore a lock is not required to access it.
VCMReceiveCallback* _receiveCallback = nullptr;
VCMTiming* _timing;
Mutex lock_;
std::deque<FrameInfo> frame_infos_ RTC_GUARDED_BY(lock_);
int64_t ntp_offset_;
};
class VCMGenericDecoder {
public:
explicit VCMGenericDecoder(VideoDecoder* decoder);
~VCMGenericDecoder();
/**
* Initialize the decoder with the information from the `settings`
*/
bool Configure(const VideoDecoder::Settings& settings);
/**
* Decode to a raw I420 frame,
*
* inputVideoBuffer reference to encoded video frame
*/
int32_t Decode(const VCMEncodedFrame& inputFrame, Timestamp now);
/**
* Set decode callback. Deregistering while decoding is illegal.
*/
int32_t RegisterDecodeCompleteCallback(VCMDecodedFrameCallback* callback);
bool IsSameDecoder(VideoDecoder* decoder) const {
return decoder_ == decoder;
}
private:
VCMDecodedFrameCallback* _callback = nullptr;
VideoDecoder* const decoder_;
VideoContentType _last_keyframe_content_type;
VideoDecoder::DecoderInfo decoder_info_;
};
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_GENERIC_DECODER_H_
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