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781653c813
Bug: none Change-Id: I1ee311df9b18acaf0c7230bb2ad9cc88f996bb1a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/140103 Reviewed-by: Stefan Holmer <stefan@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28168}
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VIDEO_VIDEO_STREAM_DECODER_IMPL_H_
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#define VIDEO_VIDEO_STREAM_DECODER_IMPL_H_
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#include <map>
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#include <memory>
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#include <utility>
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#include "absl/types/optional.h"
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#include "api/video/video_stream_decoder.h"
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#include "modules/video_coding/frame_buffer2.h"
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#include "modules/video_coding/timing.h"
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#include "rtc_base/platform_thread.h"
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#include "rtc_base/task_queue.h"
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#include "rtc_base/thread_checker.h"
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#include "system_wrappers/include/clock.h"
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namespace webrtc {
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class VideoStreamDecoderImpl : public VideoStreamDecoderInterface,
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private DecodedImageCallback {
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public:
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VideoStreamDecoderImpl(
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VideoStreamDecoderInterface::Callbacks* callbacks,
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VideoDecoderFactory* decoder_factory,
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TaskQueueFactory* task_queue_factory,
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std::map<int, std::pair<SdpVideoFormat, int>> decoder_settings);
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~VideoStreamDecoderImpl() override;
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void OnFrame(std::unique_ptr<video_coding::EncodedFrame> frame) override;
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void SetMinPlayoutDelay(TimeDelta min_delay) override;
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void SetMaxPlayoutDelay(TimeDelta max_delay) override;
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private:
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enum DecodeResult {
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kOk,
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kDecodeFailure,
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kNoFrame,
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kNoDecoder,
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kShutdown,
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};
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struct FrameTimestamps {
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int64_t timestamp;
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int64_t decode_start_time_ms;
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int64_t render_time_us;
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};
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VideoDecoder* GetDecoder(int payload_type);
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static void DecodeLoop(void* ptr);
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DecodeResult DecodeNextFrame(int max_wait_time_ms, bool keyframe_required);
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FrameTimestamps* GetFrameTimestamps(int64_t timestamp);
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// Implements DecodedImageCallback interface
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int32_t Decoded(VideoFrame& decodedImage) override;
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int32_t Decoded(VideoFrame& decodedImage, int64_t decode_time_ms) override;
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void Decoded(VideoFrame& decodedImage,
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absl::optional<int32_t> decode_time_ms,
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absl::optional<uint8_t> qp) override;
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VideoStreamDecoderInterface::Callbacks* const callbacks_
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RTC_PT_GUARDED_BY(bookkeeping_queue_);
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VideoDecoderFactory* const decoder_factory_;
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std::map<int, std::pair<SdpVideoFormat, int>> decoder_settings_;
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// The |bookkeeping_queue_| is used to:
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// - Make |callbacks_|.
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// - Insert/extract frames from the |frame_buffer_|
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// - Synchronize with whatever thread that makes the Decoded callback.
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rtc::TaskQueue bookkeeping_queue_;
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rtc::PlatformThread decode_thread_;
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VCMTiming timing_;
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video_coding::FrameBuffer frame_buffer_;
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video_coding::VideoLayerFrameId last_continuous_id_;
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absl::optional<int> current_payload_type_;
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std::unique_ptr<VideoDecoder> decoder_;
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// Some decoders are pipelined so it is not sufficient to save frame info
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// for the last frame only.
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static constexpr int kFrameTimestampsMemory = 8;
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std::array<FrameTimestamps, kFrameTimestampsMemory> frame_timestamps_
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RTC_GUARDED_BY(bookkeeping_queue_);
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int next_frame_timestamps_index_ RTC_GUARDED_BY(bookkeeping_queue_);
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};
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} // namespace webrtc
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#endif // VIDEO_VIDEO_STREAM_DECODER_IMPL_H_
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