src/add-ons/media/plugins/asf_reader/ASFFileReader.h

   1 /*
   2  * Copyright (c) 2005, David McPaul
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   8  *  * Redistributions of source code must retain the above copyright notice,
   9  *    this list of conditions and the following disclaimer.
  10  *  * Redistributions in binary form must reproduce the above copyright notice,
  11  *    this list of conditions and the following disclaimer in the documentation
  12  *    and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  18  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  19  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  21  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  22  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  23  * OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25 #ifndef _ASF_FILE_READER_H
  26 #define _ASF_FILE_READER_H
  27
  28 #include <File.h>
  29 #include <MediaDefs.h>
  30 #include <MediaFormats.h>
  31 #include <SupportDefs.h>
  32
  33 #include <vector>
  34
  35 extern "C" {
  36         #include "libasf/asf.h"
  37 }
  38 #include "ASFIndex.h"
  39
  40 struct ASFAudioFormat {
  41         uint16 Compression;
  42         uint16 NoChannels;
  43         uint32 SamplesPerSec;
  44         uint32 AvgBytesPerSec;
  45         uint16 BlockAlign;
  46         uint16 BitsPerSample;
  47         uint32 extraDataSize;
  48         uint8 *extraData;
  49 };
  50
  51 struct ASFVideoFormat {
  52         uint32 Compression;
  53         uint32 VideoWidth;
  54         uint32 VideoHeight;
  55         uint16 Planes;
  56         uint16 BitCount;
  57         uint32 FrameRate;
  58         uint32 FrameScale;
  59         uint32 FrameCount;
  60         uint32 extraDataSize;
  61         uint8 *extraData;
  62 };
  63
  64 // ASF file reader
  65 class ASFFileReader {
  66 private:
  67         off_t   StreamSize;
  68         BPositionIO     *theStream;
  69         asf_file_t *asfFile;
  70         asf_packet_t *packet;
  71         std::vector<StreamEntry> streams;
  72
  73         void ParseIndex();
  74
  75 public:
  76                         ASFFileReader(BPositionIO *pStream);
  77         virtual ~ASFFileReader();
  78
  79         status_t        ParseFile();
  80
  81         bool    IsEndOfFile(off_t pPosition);
  82         bool    IsEndOfFile();
  83         bool    IsEndOfData(off_t pPosition);
  84
  85         // Is this a asf file
  86         static bool     IsSupported(BPositionIO *source);
  87
  88         // How many tracks in file
  89         uint32          getStreamCount();
  90
  91         // the Stream duration indexed by streamIndex
  92         bigtime_t       getStreamDuration(uint32 streamIndex);
  93
  94         bool getAudioFormat(uint32 streamIndex, ASFAudioFormat *format);
  95         bool getVideoFormat(uint32 streamIndex, ASFVideoFormat *format);
  96
  97         // The no of frames in the Stream indexed by streamIndex
  98         uint32          getFrameCount(uint32 streamIndex);
  99
 100         // Is stream (track) a video track
 101         bool            IsVideo(uint32 streamIndex);
 102         // Is stream (track) a audio track
 103         bool            IsAudio(uint32 streamIndex);
 104
 105         BPositionIO *Source() {return theStream;};
 106
 107         IndexEntry GetIndex(uint32 streamIndex, uint32 frameNo);
 108         bool HasIndex(uint32 streamIndex, uint32 frameNo);
 109
 110         uint32 GetFrameForTime(uint32 streamIndex, bigtime_t time);
 111
 112         bool    GetNextChunkInfo(uint32 streamIndex, uint32 pFrameNo, char **buffer, uint32 *size, bool *keyframe, bigtime_t *pts);
 113
 114         static  int32_t read(void *opaque, void *buffer, int32_t size);
 115         static  int32_t write(void *opaque, void *buffer, int32_t size);
 116         static  int64_t seek(void *opaque, int64_t offset);
 117 };
 118
 119 #endif