Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 244 | chris | 1 | /******************************************************************** |
| 2 | * * |
||
| 3 | * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
||
| 4 | * * |
||
| 5 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
||
| 6 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
||
| 7 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
||
| 8 | * * |
||
| 9 | * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * |
||
| 10 | * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
||
| 11 | * * |
||
| 12 | ******************************************************************** |
||
| 13 | |||
| 14 | function: stdio-based convenience library for opening/seeking/decoding |
||
| 15 | |||
| 16 | ********************************************************************/ |
||
| 17 | |||
| 18 | #ifndef _OV_FILE_H_ |
||
| 19 | #define _OV_FILE_H_ |
||
| 20 | |||
| 21 | #ifdef __cplusplus |
||
| 22 | extern "C" |
||
| 23 | { |
||
| 24 | #endif /* __cplusplus */ |
||
| 25 | |||
| 26 | #include <stdio.h> |
||
| 27 | #include "ivorbiscodec.h" |
||
| 28 | |||
| 29 | #define CHUNKSIZE 1024 |
||
| 30 | /* The function prototypes for the callbacks are basically the same as for |
||
| 31 | * the stdio functions fread, fseek, fclose, ftell. |
||
| 32 | * The one difference is that the FILE * arguments have been replaced with |
||
| 33 | * a void * - this is to be used as a pointer to whatever internal data these |
||
| 34 | * functions might need. In the stdio case, it's just a FILE * cast to a void * |
||
| 35 | * |
||
| 36 | * If you use other functions, check the docs for these functions and return |
||
| 37 | * the right values. For seek_func(), you *MUST* return -1 if the stream is |
||
| 38 | * unseekable |
||
| 39 | */ |
||
| 40 | typedef struct { |
||
| 41 | size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource); |
||
| 42 | int (*seek_func) (void *datasource, ogg_int64_t offset, int whence); |
||
| 43 | int (*close_func) (void *datasource); |
||
| 44 | long (*tell_func) (void *datasource); |
||
| 45 | } ov_callbacks; |
||
| 46 | |||
| 47 | #define NOTOPEN 0 |
||
| 48 | #define PARTOPEN 1 |
||
| 49 | #define OPENED 2 |
||
| 50 | #define STREAMSET 3 |
||
| 51 | #define INITSET 4 |
||
| 52 | |||
| 53 | typedef struct OggVorbis_File { |
||
| 54 | void *datasource; /* Pointer to a FILE *, etc. */ |
||
| 55 | int seekable; |
||
| 56 | ogg_int64_t offset; |
||
| 57 | ogg_int64_t end; |
||
| 58 | ogg_sync_state *oy; |
||
| 59 | |||
| 60 | /* If the FILE handle isn't seekable (eg, a pipe), only the current |
||
| 61 | stream appears */ |
||
| 62 | int links; |
||
| 63 | ogg_int64_t *offsets; |
||
| 64 | ogg_int64_t *dataoffsets; |
||
| 65 | ogg_uint32_t *serialnos; |
||
| 66 | ogg_int64_t *pcmlengths; |
||
| 67 | vorbis_info *vi; |
||
| 68 | vorbis_comment *vc; |
||
| 69 | |||
| 70 | /* Decoding working state local storage */ |
||
| 71 | ogg_int64_t pcm_offset; |
||
| 72 | int ready_state; |
||
| 73 | ogg_uint32_t current_serialno; |
||
| 74 | int current_link; |
||
| 75 | |||
| 76 | ogg_int64_t bittrack; |
||
| 77 | ogg_int64_t samptrack; |
||
| 78 | |||
| 79 | ogg_stream_state *os; /* take physical pages, weld into a logical |
||
| 80 | stream of packets */ |
||
| 81 | vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ |
||
| 82 | vorbis_block vb; /* local working space for packet->PCM decode */ |
||
| 83 | |||
| 84 | ov_callbacks callbacks; |
||
| 85 | |||
| 86 | } OggVorbis_File; |
||
| 87 | |||
| 88 | extern int ov_clear(OggVorbis_File *vf); |
||
| 89 | extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); |
||
| 90 | extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf, |
||
| 91 | char *initial, long ibytes, ov_callbacks callbacks); |
||
| 92 | |||
| 93 | extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); |
||
| 94 | extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf, |
||
| 95 | char *initial, long ibytes, ov_callbacks callbacks); |
||
| 96 | extern int ov_test_open(OggVorbis_File *vf); |
||
| 97 | |||
| 98 | extern long ov_bitrate(OggVorbis_File *vf,int i); |
||
| 99 | extern long ov_bitrate_instant(OggVorbis_File *vf); |
||
| 100 | extern long ov_streams(OggVorbis_File *vf); |
||
| 101 | extern long ov_seekable(OggVorbis_File *vf); |
||
| 102 | extern long ov_serialnumber(OggVorbis_File *vf,int i); |
||
| 103 | |||
| 104 | extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i); |
||
| 105 | extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i); |
||
| 106 | extern ogg_int64_t ov_time_total(OggVorbis_File *vf,int i); |
||
| 107 | |||
| 108 | extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos); |
||
| 109 | extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos); |
||
| 110 | extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos); |
||
| 111 | extern int ov_time_seek(OggVorbis_File *vf,ogg_int64_t pos); |
||
| 112 | extern int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t pos); |
||
| 113 | |||
| 114 | extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf); |
||
| 115 | extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf); |
||
| 116 | extern ogg_int64_t ov_time_tell(OggVorbis_File *vf); |
||
| 117 | |||
| 118 | extern vorbis_info *ov_info(OggVorbis_File *vf,int link); |
||
| 119 | extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link); |
||
| 120 | |||
| 121 | extern long ov_read(OggVorbis_File *vf,char *buffer,int length, |
||
| 122 | int *bitstream); |
||
| 123 | |||
| 124 | #ifdef __cplusplus |
||
| 125 | } |
||
| 126 | #endif /* __cplusplus */ |
||
| 127 | |||
| 128 | #endif |
||
| 129 | |||
| 130 |