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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 WEBRTC_MODULES_VIDEO_CODING_CODECS_I420_MAIN_INTERFACE_I420_H_
#define WEBRTC_MODULES_VIDEO_CODING_CODECS_I420_MAIN_INTERFACE_I420_H_
#include <vector>
#include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
#include "webrtc/typedefs.h"
namespace webrtc {
class I420Encoder : public VideoEncoder {
public:
I420Encoder();
virtual ~I420Encoder();
// Initialize the encoder with the information from the VideoCodec.
//
// Input:
// - codecSettings : Codec settings.
// - numberOfCores : Number of cores available for the encoder.
// - maxPayloadSize : The maximum size each payload is allowed
// to have. Usually MTU - overhead.
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK.
// <0 - Error
int InitEncode(const VideoCodec* codecSettings,
int /*numberOfCores*/,
size_t /*maxPayloadSize*/) override;
// "Encode" an I420 image (as a part of a video stream). The encoded image
// will be returned to the user via the encode complete callback.
//
// Input:
// - inputImage : Image to be encoded.
// - codecSpecificInfo : Pointer to codec specific data.
// - frameType : Frame type to be sent (Key /Delta).
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK.
// <0 - Error
int Encode(const VideoFrame& inputImage,
const CodecSpecificInfo* /*codecSpecificInfo*/,
const std::vector<FrameType>* /*frame_types*/) override;
// Register an encode complete callback object.
//
// Input:
// - callback : Callback object which handles encoded images.
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
// Free encoder memory.
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
int Release() override;
int SetRates(uint32_t /*newBitRate*/, uint32_t /*frameRate*/) override {
return WEBRTC_VIDEO_CODEC_OK;
}
int SetChannelParameters(uint32_t /*packetLoss*/, int64_t /*rtt*/) override {
return WEBRTC_VIDEO_CODEC_OK;
}
void OnDroppedFrame() override {}
private:
static uint8_t* InsertHeader(uint8_t* buffer, uint16_t width,
uint16_t height);
bool _inited;
EncodedImage _encodedImage;
EncodedImageCallback* _encodedCompleteCallback;
}; // class I420Encoder
class I420Decoder : public VideoDecoder {
public:
I420Decoder();
virtual ~I420Decoder();
// Initialize the decoder.
// The user must notify the codec of width and height values.
//
// Return value : WEBRTC_VIDEO_CODEC_OK.
// <0 - Errors
int InitDecode(const VideoCodec* codecSettings,
int /*numberOfCores*/) override;
// Decode encoded image (as a part of a video stream). The decoded image
// will be returned to the user through the decode complete callback.
//
// Input:
// - inputImage : Encoded image to be decoded
// - missingFrames : True if one or more frames have been lost
// since the previous decode call.
// - codecSpecificInfo : pointer to specific codec data
// - renderTimeMs : Render time in Ms
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK
// <0 - Error
int Decode(const EncodedImage& inputImage,
bool missingFrames,
const RTPFragmentationHeader* /*fragmentation*/,
const CodecSpecificInfo* /*codecSpecificInfo*/,
int64_t /*renderTimeMs*/) override;
// Register a decode complete callback object.
//
// Input:
// - callback : Callback object which handles decoded images.
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK, < 0 otherwise.
int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override;
// Free decoder memory.
//
// Return value : WEBRTC_VIDEO_CODEC_OK if OK.
// <0 - Error
int Release() override;
// Reset decoder state and prepare for a new call.
//
// Return value : WEBRTC_VIDEO_CODEC_OK.
// <0 - Error
int Reset() override;
private:
static const uint8_t* ExtractHeader(const uint8_t* buffer,
uint16_t* width,
uint16_t* height);
VideoFrame _decodedImage;
int _width;
int _height;
bool _inited;
DecodedImageCallback* _decodeCompleteCallback;
}; // class I420Decoder
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_I420_MAIN_INTERFACE_I420_H_
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