ref: 7175d3c90e63d2c5adc87a92ed3625fcd5d5e1a4
dir: /codec/api/svc/codec_api.h/
/*!
*@page License
*
* \copy
* Copyright (c) 2013, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef WELS_VIDEO_CODEC_SVC_API_H__
#define WELS_VIDEO_CODEC_SVC_API_H__
#ifndef __cplusplus
#ifdef _MSC_VER
typedef unsigned char bool;
#else
#include <stdbool.h>
#endif
#endif
#include "codec_app_def.h"
#include "codec_def.h"
#if defined(_WIN32) || defined(__cdecl)
#define EXTAPI __cdecl
#else
#define EXTAPI
#endif
/**
* @file codec_api.h
*/
/**
* @page Overview
* * This page is for openh264 codec API usage.
* * For how to use the encoder,please refer to page UsageExampleForEncoder
* * For how to use the decoder,please refer to page UsageExampleForDecoder
* * For more detail about ISVEncoder,please refer to page ISVCEnoder
* * For more detail about ISVDecoder,please refer to page ISVCDecoder
*/
/**
* @page DecoderUsageExample
*
* @brief
* * An example for using the decoder
*
* Step 1:decoder declaration
* @code
*
* //decoder declaration
* ISVCDecoder *pSvcDecoder;
* //input: encoded bitstream start position; should include start code prefix
* unsigned char *pBuf =...;
* //input: encoded bit stream length; should include the size of start code prefix
* int iSize =...;
* //output: [0~2] for Y,U,V buffer
* unsigned char *pData[3] =...;
* //in-out: declare and initialize the output buffer info
* SBufferInfo sDstBufInfo;
* memset(&sDstBufInfo, 0, sizeof(SBufferInfo));
*
* @endcode
*
* Step 2:decoder creation
* @code
* CreateDecoder(pSvcDecoder);
* @endcode
*
* Step 3:declare required parameter
* @code
* SDecodingParam sDecParam = {0};
* sDecParam.sVideoProperty.eVideoBsType = VIDEO_BITSTREAM_AVC;
* @endcode
*
* Step 4:initialize the parameter and decoder context, allocate memory
* @code
* Initialize(&sDecParam);
* @endcode
*
* Step 5:do actual decoding process in slice level;
* this can be done in a loop until data ends
* @code
* iRet = DecodeFrame2(pBuf, iSize, pData, &sDstBufInfo);
* //decode failed
* If (iRet != 0){
* RequestIDR or something like that.
* }
* //pData can be used for render.
* if (sDstBufInfo.iBufferStatus==1){
* output pData[0], pData[1], pData[2];
* }
* @endcode
*
* Step 6:uninitialize the decoder and memory free
* @code
* Uninitialize();
* @endcode
*
* Step 7:destroy the decoder
* @code
* DestroyDecoder();
* @endcode
*
*/
/**
* @page EncoderUsageExample1
*
* @brief
* * An example for using encoder with basic parameter
*
* Step1:setup encoder
* @code
* int rv = WelsCreateSVCEncoder (&encoder_);
* ASSERT_EQ (0, rv);
* ASSERT_TRUE (encoder_ != NULL);
* @endcode
*
* Step2:initilize with basic parameter
* @code
* SEncParamBase param;
* memset (¶m, 0, sizeof (SEncParamBase));
* param.iUsageType = usageType;
* param.fMaxFrameRate = frameRate;
* param.iPicWidth = width;
* param.iPicHeight = height;
* param.iTargetBitrate = 5000000;
* param.iInputCsp = videoFormatI420;
* encoder_->Initialize (¶m);
* @endcode
*
* Step3:set option, set option during encoding process
* @code
* encoder_->SetOption (ENCODER_OPTION_TRACE_LEVEL, &g_LevelSetting);
* @endcode
*
* Step4: encode and store ouput bistream
* @code
* int frameSize = width * height * 3 / 2;
* BufferedData buf;
* buf.SetLength (frameSize);
* ASSERT_TRUE (buf.Length() == (size_t)frameSize);
* SFrameBSInfo info;
* memset (&info, 0, sizeof (SFrameBSInfo));
* SSourcePicture pic;
* memset (&pic, 0, sizeof (SsourcePicture));
* pic.iPicWidth = width;
* pic.iPicHeight = height;
* pic.iColorFormat = videoFormatI420;
* pic.iStride[0] = pic.iPicWidth;
* pic.iStride[1] = pic.iStride[2] = pic.iPicWidth >> 1;
* pic.pData[0] = buf.data();
* pic.pData[1] = pic.pData[0] + width * height;
* pic.pData[2] = pic.pData[1] + (width * height >> 2);
* for(int num = 0;num<total_num;num++) {
* //prepare input data
* rv = encoder_->EncodeFrame (&pic, &info);
* ASSERT_TRUE (rv == cmResultSuccess);
* if (info.eFrameType != videoFrameTypeSkip && cbk != NULL) {
* //output bitstream
* }
* }
* @endcode
*
* Step5:teardown encoder
* @code
* if (encoder_) {
* encoder_->Uninitialize();
* WelsDestroySVCEncoder (encoder_);
* }
* @endcode
*
*/
/**
* @page EncoderUsageExample2
*
* @brief
* * An example for using the encoder with extension parameter.
* * The same operation on Step 1,3,4,5 with Example-1
*
* Step 2:initialize with extension parameter
* @code
* SEncParamExt param;
* encoder->GetDefaultParams (¶m);
* param.iUsageType = usageType;
* param.fMaxFrameRate = frameRate;
* param.iPicWidth = width;
* param.iPicHeight = height;
* param.iTargetBitrate = 5000000;
* param.iInputCsp = videoFormatI420;
* param.bEnableDenoise = denoise;
* param.iSpatialLayerNum = layers;
* //SM_DYN_SLICE don't support multi-thread now
* if (sliceMode != SM_SINGLE_SLICE && sliceMode != SM_DYN_SLICE)
* param.iMultipleThreadIdc = 2;
*
* for (int i = 0; i < param.iSpatialLayerNum; i++) {
* param.sSpatialLayers[i].iVideoWidth = width >> (param.iSpatialLayerNum - 1 - i);
* param.sSpatialLayers[i].iVideoHeight = height >> (param.iSpatialLayerNum - 1 - i);
* param.sSpatialLayers[i].fFrameRate = frameRate;
* param.sSpatialLayers[i].iSpatialBitrate = param.iTargetBitrate;
*
* param.sSpatialLayers[i].sSliceCfg.uiSliceMode = sliceMode;
* if (sliceMode == SM_DYN_SLICE) {
* param.sSpatialLayers[i].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = 600;
* param.uiMaxNalSize = 1500;
* }
* }
* param.iTargetBitrate *= param.iSpatialLayerNum;
* encoder_->InitializeExt (¶m);
*
* @endcode
*/
#ifdef __cplusplus
/**
* @brief Endocder definition
*/
class ISVCEncoder {
public:
/**
* @brief Initialize the encoder
* @param pParam basic encoder parameter
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual int EXTAPI Initialize (const SEncParamBase* pParam) = 0;
/**
* @brief Initilaize encoder by using extension parameters.
* @param pParam extension parameter for encoder
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual int EXTAPI InitializeExt (const SEncParamExt* pParam) = 0;
/**
* @brief Get the default extension parameters.
* If you want to change some parameters of encoder, firstly you need to get the default encoding parameters,
* after that you can change part of parameters you want to.
* @param pParam extension parameter for encoder
* @return CM_RETURN: 0 - success; otherwise - failed;
* */
virtual int EXTAPI GetDefaultParams (SEncParamExt* pParam) = 0;
/// uninitialize the encoder
virtual int EXTAPI Uninitialize() = 0;
/**
* @brief Encode one frame
* @param kpSrcPic the pointer to the source luminance plane
* chrominance data:
* CbData = kpSrc + m_iMaxPicWidth * m_iMaxPicHeight;
* CrData = CbData + (m_iMaxPicWidth * m_iMaxPicHeight)/4;
* the application calling this interface needs to ensure the data validation between the location
* @param pBsInfo output bit stream
* @return 0 - success; otherwise -failed;
*/
virtual int EXTAPI EncodeFrame (const SSourcePicture* kpSrcPic, SFrameBSInfo* pBsInfo) = 0;
/**
* @brief Encode the parameters from output bit stream
* @param pBsInfo output bit stream
* @return 0 - success; otherwise - failed;
*/
virtual int EXTAPI EncodeParameterSets (SFrameBSInfo* pBsInfo) = 0;
/**
* @brief Force encoder to encoder frame as IDR if bIDR set as true
* @param bIDR true: force encoder to encode frame as IDR frame;false, return 1 and nothing to do
* @return 0 - success; otherwise - failed;
*/
virtual int EXTAPI ForceIntraFrame (bool bIDR) = 0;
/**
* @brief Set option for encoder, detail option type, please refer to enumurate ENCODER_OPTION.
* @param pOption option for encoder such as InDataFormat, IDRInterval, SVC Encode Param, Frame Rate, Bitrate,...
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual int EXTAPI SetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
/**
* @brief Set option for encoder, detail option type, please refer to enumurate ENCODER_OPTION.
* @param pOption option for encoder such as InDataFormat, IDRInterval, SVC Encode Param, Frame Rate, Bitrate,...
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual int EXTAPI GetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
virtual ~ISVCEncoder() {}
};
/**
* @brief Decoder definition
*/
class ISVCDecoder {
public:
/**
* @brief Initilaize decoder
* @param pParam parameter for decoder
* @return 0 - success; otherwise - failed;
*/
virtual long EXTAPI Initialize (const SDecodingParam* pParam) = 0;
/// Uninitialize the decoder
virtual long EXTAPI Uninitialize() = 0;
/**
* @brief Decode one frame
* @param pSrc the h264 stream to be decoded
* @param iSrcLen the length of h264 stream
* @param ppDst buffer pointer of decoded data (YUV)
* @param pStride output stride
* @param iWidth output width
* @param iHeight output height
* @return 0 - success; otherwise -failed;
*/
virtual DECODING_STATE EXTAPI DecodeFrame (const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
int* pStride,
int& iWidth,
int& iHeight) = 0;
/**
* @brief For slice level DecodeFrame2() (4 parameters input),
* whatever the function return value is, the output data
* of I420 format will only be available when pDstInfo->iBufferStatus == 1,.
* (e.g., in multi-slice cases, only when the whole picture
* is completely reconstructed, this variable would be set equal to 1.)
* @param pSrc the h264 stream to be decoded
* @param iSrcLen the length of h264 stream
* @param ppDst buffer pointer of decoded data (YUV)
* @param pDstInfo information provided to API(width, height, etc.)
* @return 0 - success; otherwise -failed;
*/
virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo) = 0;
/**
* @brief This function parse input bitstream only, and rewrite possible SVC syntax to AVC syntax
* @param pSrc the h264 stream to be decoded
* @param iSrcLen the length of h264 stream
* @param pDstInfo bit stream info
* @return 0 - success; otherwise -failed;
*/
virtual DECODING_STATE EXTAPI DecodeParser (const unsigned char* pSrc,
const int iSrcLen,
SParserBsInfo* pDstInfo) = 0;
/**
* @brief This API does not work for now!! This is for future use to support non-I420 color format output.
* @param pSrc the h264 stream to be decoded
* @param iSrcLen the length of h264 stream
* @param pDst buffer pointer of decoded data (YUV)
* @param iDstStride output stride
* @param iDstLen bit stream info
* @param iWidth output width
* @param iHeight output height
* @param iColorFormat output color format
* @return to do ...
*/
virtual DECODING_STATE EXTAPI DecodeFrameEx (const unsigned char* pSrc,
const int iSrcLen,
unsigned char* pDst,
int iDstStride,
int& iDstLen,
int& iWidth,
int& iHeight,
int& iColorFormat) = 0;
/**
* @brief Set option for decoder, detail option type, please refer to enumurate DECODER_OPTION.
* @param pOption option for decoder such as OutDataFormat, Eos Flag, EC method, ...
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual long EXTAPI SetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
/**
* @brief Get option for decoder, detail option type, please refer to enumurate DECODER_OPTION.
* @param pOption option for decoder such as OutDataFormat, Eos Flag, EC method, ...
* @return CM_RETURN: 0 - success; otherwise - failed;
*/
virtual long EXTAPI GetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
virtual ~ISVCDecoder() {}
};
extern "C"
{
#else
typedef struct ISVCEncoderVtbl ISVCEncoderVtbl;
typedef const ISVCEncoderVtbl* ISVCEncoder;
struct ISVCEncoderVtbl {
int (*Initialize) (ISVCEncoder*, const SEncParamBase* pParam);
int (*InitializeExt) (ISVCEncoder*, const SEncParamExt* pParam);
int (*GetDefaultParams) (ISVCEncoder*, SEncParamExt* pParam);
int (*Uninitialize) (ISVCEncoder*);
int (*EncodeFrame) (ISVCEncoder*, const SSourcePicture* kpSrcPic, SFrameBSInfo* pBsInfo);
int (*EncodeParameterSets) (ISVCEncoder*, SFrameBSInfo* pBsInfo);
int (*ForceIntraFrame) (ISVCEncoder*, bool bIDR);
int (*SetOption) (ISVCEncoder*, ENCODER_OPTION eOptionId, void* pOption);
int (*GetOption) (ISVCEncoder*, ENCODER_OPTION eOptionId, void* pOption);
};
typedef struct ISVCDecoderVtbl ISVCDecoderVtbl;
typedef const ISVCDecoderVtbl* ISVCDecoder;
struct ISVCDecoderVtbl {
long (*Initialize) (ISVCDecoder*, const SDecodingParam* pParam);
long (*Uninitialize) (ISVCDecoder*);
DECODING_STATE (*DecodeFrame) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
int* pStride,
int* iWidth,
int* iHeight);
DECODING_STATE (*DecodeFrame2) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo);
DECODING_STATE (*DecodeParser) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
SParserBsInfo* pDstInfo);
DECODING_STATE (*DecodeFrameEx) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
unsigned char* pDst,
int iDstStride,
int* iDstLen,
int* iWidth,
int* iHeight,
int* iColorFormat);
long (*SetOption) (ISVCDecoder*, DECODER_OPTION eOptionId, void* pOption);
long (*GetOption) (ISVCDecoder*, DECODER_OPTION eOptionId, void* pOption);
};
#endif
typedef void (*WelsTraceCallback) (void* ctx, int level, const char* string);
/** @brief Create encoder
* @param ppEncoder encoder
* @return 0 - success; otherwise - failed;
*/
int WelsCreateSVCEncoder (ISVCEncoder** ppEncoder);
/** @brief Destroy encoder
* @param pEncoder encoder
* @return void
*/
void WelsDestroySVCEncoder (ISVCEncoder* pEncoder);
/** @brief Get the capability of decoder
* @param pDecCapability decoder capability
* @return 0 - success; otherwise - failed;
*/
int WelsGetDecoderCapability (SDecoderCapability* pDecCapability);
/** @brief Create decoder
* @param ppDecoder decoder
* @return 0 - success; otherwise - failed;
*/
long WelsCreateDecoder (ISVCDecoder** ppDecoder);
/** @brief Destroy decoder
* @param pDecoder decoder
* @return void
*/
void WelsDestroyDecoder (ISVCDecoder* pDecoder);
#ifdef __cplusplus
}
#endif
#endif//WELS_VIDEO_CODEC_SVC_API_H__