src/add-ons/media/plugins/wav_reader/WavReaderPlugin.h

   1 /*
   2  * Copyright (c) 2003, Marcus Overhagen
   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 _WAV_READER_PLUGIN_H
  26 #define _WAV_READER_PLUGIN_H
  27
  28 #include "ReaderPlugin.h"
  29 #include "wav.h"
  30
  31 class WavReader : public Reader
  32 {
  33 public:
  34                                 WavReader();
  35                                 ~WavReader();
  36
  37         const char *Copyright();
  38
  39         status_t        Sniff(int32 *streamCount);
  40
  41         void            GetFileFormatInfo(media_file_format *mff);
  42
  43         status_t        AllocateCookie(int32 streamNumber, void **cookie);
  44         status_t        FreeCookie(void *cookie);
  45
  46         status_t        GetStreamInfo(void *cookie, int64 *frameCount, bigtime_t *duration,
  47                                         media_format *format, const void **infoBuffer, size_t *infoSize);
  48
  49         status_t        Seek(void *cookie, uint32 flags,
  50                                         int64 *frame, bigtime_t *time);
  51
  52         status_t        FindKeyFrame(void* cookie, uint32 flags,
  53                                         int64* frame, bigtime_t* time);
  54
  55         status_t        GetNextChunk(void *cookie,
  56                                         const void **chunkBuffer, size_t *chunkSize,
  57                                         media_header *mediaHeader);
  58
  59         status_t        CalculateNewPosition(void* cookie, uint32 flags,
  60                                         int64 *frame, bigtime_t *time, int64 *position);
  61
  62         BPositionIO *Source() { return fSource; }
  63
  64 private:
  65         BPositionIO *   fSource;
  66         int64                   fFileSize;
  67         int64                   fDataStart;
  68         int64                   fDataSize;
  69
  70         wave_format_ex  fMetaData;
  71
  72         int64                   fFrameCount;
  73         int32                   fFrameRate;
  74         uint16                  fBufferSize;
  75 };
  76
  77
  78 class WavReaderPlugin : public ReaderPlugin
  79 {
  80 public:
  81         Reader *NewReader();
  82 };
  83
  84 MediaPlugin *instantiate_plugin();
  85
  86 #endif