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3rdparty/opencv-4.5.4/modules/videoio/src/cap_ffmpeg_legacy_api.hpp 1.91 KB
f4334277   Hu Chunming   提交3rdparty
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  // This file is part of OpenCV project.
  // It is subject to the license terms in the LICENSE file found in the top-level directory
  // of this distribution and at http://opencv.org/license.html.
  #ifndef __OPENCV_FFMPEG_LEGACY_API_H__
  #define __OPENCV_FFMPEG_LEGACY_API_H__
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  #ifndef OPENCV_FFMPEG_API
  #if defined(__OPENCV_BUILD)
  #   define OPENCV_FFMPEG_API
  #elif defined _WIN32
  #   define OPENCV_FFMPEG_API __declspec(dllexport)
  #elif defined __GNUC__ && __GNUC__ >= 4
  #   define OPENCV_FFMPEG_API __attribute__ ((visibility ("default")))
  #else
  #   define OPENCV_FFMPEG_API
  #endif
  #endif
  
  typedef struct CvCapture_FFMPEG CvCapture_FFMPEG;
  typedef struct CvVideoWriter_FFMPEG CvVideoWriter_FFMPEG;
  
  //OPENCV_FFMPEG_API struct CvCapture_FFMPEG* cvCreateFileCapture_FFMPEG(const char* filename);
  OPENCV_FFMPEG_API int cvSetCaptureProperty_FFMPEG(struct CvCapture_FFMPEG* cap,
                                                    int prop, double value);
  OPENCV_FFMPEG_API double cvGetCaptureProperty_FFMPEG(struct CvCapture_FFMPEG* cap, int prop);
  OPENCV_FFMPEG_API int cvGrabFrame_FFMPEG(struct CvCapture_FFMPEG* cap);
  OPENCV_FFMPEG_API int cvRetrieveFrame_FFMPEG(struct CvCapture_FFMPEG* capture, unsigned char** data,
                                               int* step, int* width, int* height, int* cn);
  OPENCV_FFMPEG_API void cvReleaseCapture_FFMPEG(struct CvCapture_FFMPEG** cap);
  
  OPENCV_FFMPEG_API struct CvVideoWriter_FFMPEG* cvCreateVideoWriter_FFMPEG(const char* filename,
              int fourcc, double fps, int width, int height, int isColor );
  OPENCV_FFMPEG_API int cvWriteFrame_FFMPEG(struct CvVideoWriter_FFMPEG* writer, const unsigned char* data,
                                            int step, int width, int height, int cn, int origin);
  OPENCV_FFMPEG_API void cvReleaseVideoWriter_FFMPEG(struct CvVideoWriter_FFMPEG** writer);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif  // __OPENCV_FFMPEG_LEGACY_API_H__