70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
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/*
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* Copyright (c) 2014 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 API_VIDEO_CODECS_VIDEO_DECODER_H_
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#define API_VIDEO_CODECS_VIDEO_DECODER_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "api/video/encoded_image.h"
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#include "api/video/video_frame.h"
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#include "api/video_codecs/video_codec.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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class RTC_EXPORT DecodedImageCallback {
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public:
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virtual ~DecodedImageCallback() {}
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virtual int32_t Decoded(VideoFrame& decodedImage) = 0;
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// Provides an alternative interface that allows the decoder to specify the
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// decode time excluding waiting time for any previous pending frame to
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// return. This is necessary for breaking positive feedback in the delay
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// estimation when the decoder has a single output buffer.
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virtual int32_t Decoded(VideoFrame& decodedImage, int64_t decode_time_ms);
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// TODO(sakal): Remove other implementations when upstream projects have been
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// updated.
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virtual void Decoded(VideoFrame& decodedImage,
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absl::optional<int32_t> decode_time_ms,
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absl::optional<uint8_t> qp);
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};
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class RTC_EXPORT VideoDecoder {
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public:
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virtual ~VideoDecoder() {}
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virtual int32_t InitDecode(const VideoCodec* codec_settings,
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int32_t number_of_cores) = 0;
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virtual int32_t Decode(const EncodedImage& input_image,
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bool missing_frames,
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int64_t render_time_ms) = 0;
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virtual int32_t RegisterDecodeCompleteCallback(
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DecodedImageCallback* callback) = 0;
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virtual int32_t Release() = 0;
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// Returns true if the decoder prefer to decode frames late.
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// That is, it can not decode infinite number of frames before the decoded
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// frame is consumed.
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virtual bool PrefersLateDecoding() const;
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virtual const char* ImplementationName() const;
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};
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} // namespace webrtc
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#endif // API_VIDEO_CODECS_VIDEO_DECODER_H_
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