ref: 043575ffb0309be318776673551e0abfa3089c55
parent: dd0db820fc9f9c4c3f72d44053ea5088654e0f5f
author: Martin Storsjö <martin@martin.st>
date: Tue Jan 21 11:12:57 EST 2014
Add a public C API to the library Add a struct that matches the C++ interface vtable. This requires that the C++ interface methods are declared to use the same calling convention as normal C functions, and that the C struct exactly matches the layout and ordering of the C++ virtual table - MSVC seemed to reorder methods if there were overloaded methods.
--- a/codec/api/svc/codec_api.h
+++ b/codec/api/svc/codec_api.h
@@ -36,36 +36,43 @@
#include "codec_app_def.h"
#include "codec_def.h"
+#if defined(_WIN32) || defined(__cdecl)
+#define EXTAPI __cdecl
+#else
+#define EXTAPI
+#endif
+
+#ifdef __cplusplus
class ISVCEncoder {public:
/*
* return: CM_RETURN: 0 - success; otherwise - failed;
*/
- virtual int Initialize (SVCEncodingParam* pParam, const INIT_TYPE kiInitType = INIT_TYPE_PARAMETER_BASED) = 0;
- virtual int Initialize2 (void* pParam, const INIT_TYPE kiInitType = INIT_TYPE_CONFIG_BASED) = 0;
+ virtual int EXTAPI Initialize (SVCEncodingParam* pParam, const INIT_TYPE kiInitType = INIT_TYPE_PARAMETER_BASED) = 0;
+ virtual int EXTAPI Initialize2 (void* pParam, const INIT_TYPE kiInitType = INIT_TYPE_CONFIG_BASED) = 0;
- virtual int Uninitialize() = 0;
+ virtual int EXTAPI Uninitialize() = 0;
/*
* return: EVideoFrameType [IDR: videoFrameTypeIDR; P: videoFrameTypeP; ERROR: videoFrameTypeInvalid]
*/
- virtual int EncodeFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo) = 0;
- virtual int EncodeFrame2 (const SSourcePicture** kppSrcPicList, int nSrcPicNum, SFrameBSInfo* pBsInfo) = 0;
+ virtual int EXTAPI EncodeFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo) = 0;
+ virtual int EXTAPI EncodeFrame2 (const SSourcePicture** kppSrcPicList, int nSrcPicNum, SFrameBSInfo* pBsInfo) = 0;
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int EncodeParameterSets (SFrameBSInfo* pBsInfo) = 0;
+ virtual int EXTAPI EncodeParameterSets (SFrameBSInfo* pBsInfo) = 0;
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int PauseFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo) = 0;
+ virtual int EXTAPI PauseFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo) = 0;
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int ForceIntraFrame (bool bIDR) = 0;
+ virtual int EXTAPI ForceIntraFrame (bool bIDR) = 0;
/************************************************************************
* InDataFormat, IDRInterval, SVC Encode Param, Frame Rate, Bitrate,..
@@ -73,58 +80,118 @@
/*
* return: CM_RETURN: 0 - success; otherwise - failed;
*/
- virtual int SetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
- virtual int GetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
+ virtual int EXTAPI SetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
+ virtual int EXTAPI GetOption (ENCODER_OPTION eOptionId, void* pOption) = 0;
};
class ISVCDecoder {public:
- virtual long Initialize (void* pParam, const INIT_TYPE iInitType) = 0;
- virtual long Uninitialize() = 0;
+ virtual long EXTAPI Initialize (void* pParam, const INIT_TYPE iInitType) = 0;
+ virtual long EXTAPI Uninitialize() = 0;
- virtual DECODING_STATE DecodeFrame (const unsigned char* pSrc,
- const int iSrcLen,
- unsigned char** ppDst,
- int* pStride,
- int& iWidth,
- int& iHeight) = 0;
+ virtual DECODING_STATE EXTAPI DecodeFrame (const unsigned char* pSrc,
+ const int iSrcLen,
+ unsigned char** ppDst,
+ int* pStride,
+ int& iWidth,
+ int& iHeight) = 0;
/*
* src must be 4 byte aligned, recommend 16 byte aligned. the available src size must be multiple of 4.
*/
- virtual DECODING_STATE DecodeFrame2 (const unsigned char* pSrc,
- const int iSrcLen,
- void** ppDst,
- SBufferInfo* pDstInfo) = 0;
+ virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* pSrc,
+ const int iSrcLen,
+ void** ppDst,
+ SBufferInfo* pDstInfo) = 0;
/*
* src must be 4 byte aligned, recommend 16 byte aligned. the available src size must be multiple of 4.
* this API does not work for now!! This is for future use to support non-I420 color format output.
*/
- virtual DECODING_STATE DecodeFrameEx (const unsigned char* pSrc,
- const int iSrcLen,
- unsigned char* pDst,
- int iDstStride,
- int& iDstLen,
- int& iWidth,
- int& iHeight,
- int& iColorFormat) = 0;
+ 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;
/*************************************************************************
* OutDataFormat
*************************************************************************/
- virtual long SetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
- virtual long GetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
+ virtual long EXTAPI SetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
+ virtual long EXTAPI GetOption (DECODER_OPTION eOptionId, void* pOption) = 0;
};
extern "C"
{+#else
+
+typedef struct ISVCEncoderVtbl ISVCEncoderVtbl;
+typedef const ISVCEncoderVtbl* ISVCEncoder;
+struct ISVCEncoderVtbl {+
+ int (*Initialize) (ISVCEncoder*, SVCEncodingParam* pParam, const INIT_TYPE kiInitType);
+ int (*Initialize2) (ISVCEncoder*, void* pParam, const INIT_TYPE kiInitType);
+
+ int (*Uninitialize) (ISVCEncoder*);
+
+ int (*EncodeFrame) (ISVCEncoder*, const unsigned char* kpSrc, SFrameBSInfo* pBsInfo);
+ int (*EncodeFrame2) (ISVCEncoder*, const SSourcePicture** kppSrcPicList, int nSrcPicNum, SFrameBSInfo* pBsInfo);
+
+ int (*EncodeParameterSets) (ISVCEncoder*, SFrameBSInfo* pBsInfo);
+
+ int (*PauseFrame) (ISVCEncoder*, const unsigned char* kpSrc, 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*, void* pParam, const INIT_TYPE iInitType);
+ 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,
+ void** ppDst,
+ SBufferInfo* 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
+
+
int CreateSVCEncoder (ISVCEncoder** ppEncoder);
void DestroySVCEncoder (ISVCEncoder* pEncoder);
long CreateDecoder (ISVCDecoder** ppDecoder);
void DestroyDecoder (ISVCDecoder* pDecoder);
+
+#ifdef __cplusplus
}
+#endif
#endif//WELS_VIDEO_CODEC_SVC_API_H__
--- a/codec/decoder/plus/inc/welsDecoderExt.h
+++ b/codec/decoder/plus/inc/welsDecoderExt.h
@@ -59,8 +59,8 @@
CWelsDecoder (void_t);
virtual ~CWelsDecoder();
-virtual long Initialize (void_t* pParam, const INIT_TYPE keInitType);
-virtual long Uninitialize();
+virtual long EXTAPI Initialize (void_t* pParam, const INIT_TYPE keInitType);
+virtual long EXTAPI Uninitialize();
/***************************************************************************
* Description:
@@ -74,28 +74,28 @@
*
* return: if decode frame success return 0, otherwise corresponding error returned.
***************************************************************************/
-virtual DECODING_STATE DecodeFrame (const unsigned char* kpSrc,
- const int kiSrcLen,
- unsigned char** ppDst,
- int* pStride,
- int& iWidth,
- int& iHeight);
+virtual DECODING_STATE EXTAPI DecodeFrame (const unsigned char* kpSrc,
+ const int kiSrcLen,
+ unsigned char** ppDst,
+ int* pStride,
+ int& iWidth,
+ int& iHeight);
-virtual DECODING_STATE DecodeFrame2 (const unsigned char* kpSrc,
- const int kiSrcLen,
- void_t** ppDst,
- SBufferInfo* pDstInfo);
-virtual DECODING_STATE DecodeFrameEx (const unsigned char* kpSrc,
- const int kiSrcLen,
- unsigned char* pDst,
- int iDstStride,
- int& iDstLen,
- int& iWidth,
- int& iHeight,
- int& color_format);
+virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* kpSrc,
+ const int kiSrcLen,
+ void_t** ppDst,
+ SBufferInfo* pDstInfo);
+virtual DECODING_STATE EXTAPI DecodeFrameEx (const unsigned char* kpSrc,
+ const int kiSrcLen,
+ unsigned char* pDst,
+ int iDstStride,
+ int& iDstLen,
+ int& iWidth,
+ int& iHeight,
+ int& color_format);
-virtual long SetOption (DECODER_OPTION eOptID, void_t* pOption);
-virtual long GetOption (DECODER_OPTION eOptID, void_t* pOption);
+virtual long EXTAPI SetOption (DECODER_OPTION eOptID, void_t* pOption);
+virtual long EXTAPI GetOption (DECODER_OPTION eOptID, void_t* pOption);
private:
PWelsDecoderContext m_pDecContext;
--- a/codec/encoder/plus/inc/welsEncoderExt.h
+++ b/codec/encoder/plus/inc/welsEncoderExt.h
@@ -65,31 +65,31 @@
/*
* return: CM_RETURN: 0 - success; otherwise - failed;
*/
- virtual int Initialize (SVCEncodingParam* argv, const INIT_TYPE init_type);
- virtual int Initialize2 (void* argv, const INIT_TYPE init_type);
+ virtual int EXTAPI Initialize (SVCEncodingParam* argv, const INIT_TYPE init_type);
+ virtual int EXTAPI Initialize2 (void* argv, const INIT_TYPE init_type);
- virtual int Uninitialize();
+ virtual int EXTAPI Uninitialize();
/*
* return: EVideoFrameType [IDR: videoFrameTypeIDR; P: videoFrameTypeP; ERROR: videoFrameTypeInvalid]
*/
- virtual int EncodeFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo);
- virtual int EncodeFrame2 (const SSourcePicture** kppSrcPicList, int nSrcPicNum, SFrameBSInfo* pBsInfo);
+ virtual int EXTAPI EncodeFrame (const unsigned char* kpSrc, SFrameBSInfo* pBsInfo);
+ virtual int EXTAPI EncodeFrame2 (const SSourcePicture** kppSrcPicList, int nSrcPicNum, SFrameBSInfo* pBsInfo);
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int EncodeParameterSets (SFrameBSInfo* pBsInfo);
+ virtual int EXTAPI EncodeParameterSets (SFrameBSInfo* pBsInfo);
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int PauseFrame (const unsigned char* pSrc, SFrameBSInfo* pBsInfo);
+ virtual int EXTAPI PauseFrame (const unsigned char* pSrc, SFrameBSInfo* pBsInfo);
/*
* return: 0 - success; otherwise - failed;
*/
- virtual int ForceIntraFrame (bool bIDR);
+ virtual int EXTAPI ForceIntraFrame (bool bIDR);
/************************************************************************
* InDataFormat, IDRInterval, SVC Encode Param, Frame Rate, Bitrate,..
@@ -97,8 +97,8 @@
/*
* return: CM_RETURN: 0 - success; otherwise - failed;
*/
- virtual int SetOption (ENCODER_OPTION opt_id, void* option);
- virtual int GetOption (ENCODER_OPTION opt_id, void* option);
+ virtual int EXTAPI SetOption (ENCODER_OPTION opt_id, void* option);
+ virtual int EXTAPI GetOption (ENCODER_OPTION opt_id, void* option);
private:
sWelsEncCtx* m_pEncContext;