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DecapsAVI.h
资源名称：VC++视频传输.rar　[点击查看]
上传用户：hxb_1234
上传日期：2010-03-30
资源大小：8328k
文件大小：4k
源码类别：

VC书籍

开发平台：

Visual C++

DecapsAVI.h：源码内容
  1. /**************************************************************************************
  2.  *                                                                                    *
  3.  *                                                                                    *
  4.  **************************************************************************************/
  6. #ifndef DECAPS_AVI_H
  7. #define DECAPS_AVI_H
  11. #include "MediaClasses.h"
  12. #include "mmreg.h"
  13. #include <stdio.h>
  15. #define AVI_MAX_LEN 2000000000
  16. #define HEADERBYTES 2048
  17. #define PAD_EVEN(x) ( ((x)+1) & ~1 )
  18. #define AVIIF_KEYFRAME 0x00000010L
  22. typedef struct
  23. {
  24.   long pos;
  25.   long len;
  26.   long flags;
  28. } video_index_entry;
  30. typedef struct
  31. {
  32.    long pos;
  33.    long len;
  34.    long tot;
  36. } audio_index_entry;
  40. class MediaDecapsAVI : public MediaItemDecaps {
  42. public:
  44. BITMAPINFOHEADER   bitmapinfoheader;
  45. MPEGLAYER3WAVEFORMAT waveformatex;
  46.     long               width;             
  47.     long               height;            
  48.     double             fps;               
  49.     char               compressor[8];     
  50.     long               video_strn;        
  51.     long               video_frames;      
  52.     char               video_tag[4];      
  53.     long               video_pos;         
  54.     long               a_fmt;             
  55.     long               a_chans;           
  56.     long               a_rate;            
  57.     long               a_bits;            
  58.     long               audio_strn;        
  59.     long               audio_bytes;       
  60.     long               audio_chunks;      
  61.     char               audio_tag[4];      
  62.     long               audio_posc;        
  63.     long               audio_posb;        
  64.     long               pos;               
  65.     long               n_idx;             
  66.     long               max_idx;           
  67.     char               (*idx)[16]; 
  68.     video_index_entry *video_index;
  69.     audio_index_entry *audio_index;
  70.     long               last_pos;          
  71.     long               last_len;          
  72.     int                must_use_index;    
  73.     long               movi_start;
  75. HANDLE             hIOMutex;
  76. MediaItemInput    *input;
  78. int  IsAVI();
  79. int  FillHeader(int getIndex);
  80. int  ReFillIndex();
  81. int  AddIndexEntry(char *tag, 
  82.              long flags, 
  83.              long pos, 
  84.              long len);
  85. BOOL isKeyframe(long frame);
  86. int  SampleSize();
  88. public:
  90. MediaDecapsAVI();
  91. ~MediaDecapsAVI();
  94. media_type_t  GetType();
  95. char         *GetName();
  97. MP_RESULT     Connect(MediaItem *item);
  98. MP_RESULT     ReleaseConnections();
  100. DWORD         GetCaps();
  101. MP_RESULT     Configure(HINSTANCE hInstance, HWND hwnd);
  105. unsigned int  GetNumberOfVideoStreams();
  106. unsigned int  GetNumberOfAudioStreams();
  108. unsigned int  GetVideoWidth(unsigned int StreamId);
  109. unsigned int  GetVideoHeight(unsigned int StreamId);
  110. double        GetVideoFrameRate(unsigned int StreamId);
  111. char  *GetVideoCompression(unsigned int StreamId);
  112. BITMAPINFOHEADER *GetVideoHeader(unsigned int StreamId);
  114. unsigned long GetCurrentVideoFrame(unsigned int StreamId);
  115. unsigned long GetTotalVideoFrames(unsigned int StreamId);
  116. unsigned long GetTotalVideoTime(unsigned int StreamId);
  118. unsigned int  GetAudioBits(unsigned int StreamId);
  119. unsigned int  GetAudioChannels(unsigned int StreamId);
  120. unsigned int  GetAudioFrequency(unsigned int StreamId);
  121. WAVEFORMATEX *GetAudioFormat(unsigned int StreamId);
  123. unsigned int  GetNextVideoFrameSize(unsigned int StreamId);
  124. unsigned int  ReadVideoFrame(unsigned int StreamId, MediaBuffer *mb);
  126. unsigned int  ReadAudioData(unsigned int StreamId, char *buffer, unsigned int bytes);
  127. MP_RESULT     UpdateForSize();
  129. MP_RESULT     SeekAudio(unsigned int StreamId, long bytes);
  130. MP_RESULT     SeekVideo(unsigned int StreamId, long frame);
  131. MP_RESULT     ReSeekAudio(unsigned int StreamId);
  133. MP_RESULT     Seek(unsigned int videoStreamId, unsigned int audioStreamId, int percent);
  134. MP_RESULT     Rewind(unsigned int videoStreamId, unsigned int audioStreamId);
  136. MP_RESULT     SeekNextKeyFrame(unsigned int StreamId);
  137. MP_RESULT     SeekPreviousKeyFrame(unsigned int StreamId);
  138. };
  140. #endif