dd40702357
The goal with this CL is to move implementation details out from the webrtc root (webrtc/video_decoder.h) to simplify the dependency graph. Another goal is to streamline the creation of VideoDecoders in webrtcvideoengine2.cc; it will now have two factories of the same WebRtcVideoDecoderFactory type, one internal and one external. Specifically, this CL: * Removes webrtc::VideoDecoder::DecoderType and use webrtc::VideoCodecType instead. * Removes 'static VideoDecoder* Create(DecoderType codec_type)' and moves the create function to the internal decoder factory instead. * Removes video_decoder.cc. webrtc::VideoDecoder is now just an interface without any static functions. BUG=webrtc:6743 Review-Url: https://codereview.webrtc.org/2521203002 Cr-Commit-Position: refs/heads/master@{#15350}
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
/*
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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 WEBRTC_VIDEO_DECODER_H_
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#define WEBRTC_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 "webrtc/common_types.h"
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#include "webrtc/typedefs.h"
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#include "webrtc/video_frame.h"
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namespace webrtc {
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class RTPFragmentationHeader;
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// TODO(pbos): Expose these through a public (root) header or change these APIs.
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struct CodecSpecificInfo;
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class VideoCodec;
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class 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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// TODO(perkj): Remove default implementation when chromium has been updated.
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virtual int32_t Decoded(VideoFrame& decodedImage, int64_t decode_time_ms) {
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// The default implementation ignores custom decode time value.
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return Decoded(decodedImage);
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}
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virtual int32_t ReceivedDecodedReferenceFrame(const uint64_t pictureId) {
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return -1;
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}
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virtual int32_t ReceivedDecodedFrame(const uint64_t pictureId) { return -1; }
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};
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class 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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const RTPFragmentationHeader* fragmentation,
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const CodecSpecificInfo* codec_specific_info = NULL,
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int64_t render_time_ms = -1) = 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 { return true; }
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virtual const char* ImplementationName() const { return "unknown"; }
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};
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} // namespace webrtc
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#endif // WEBRTC_VIDEO_DECODER_H_
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