From 56fbebdcf71ea7c8e64cb18ac3a78e5834134fa3 Mon Sep 17 00:00:00 2001 From: Monty Date: Mon, 2 Sep 2002 22:13:55 +0000 Subject: Put root level of Tremor in CVS git-svn-id: https://svn.xiph.org/trunk/Tremor@3890 0101bb08-14d6-0310-b084-bc0e0c8e3800 --- ivorbisfile.h | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 ivorbisfile.h (limited to 'ivorbisfile.h') diff --git a/ivorbisfile.h b/ivorbisfile.h new file mode 100644 index 0000000..124b5ea --- /dev/null +++ b/ivorbisfile.h @@ -0,0 +1,128 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * * + * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * ALL REDISTRIBUTION RIGHTS RESERVED. * + * * + ******************************************************************** + + function: stdio-based convenience library for opening/seeking/decoding + + ********************************************************************/ + +#ifndef _OV_FILE_H_ +#define _OV_FILE_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +#include +#include "ivorbiscodec.h" + +#define CHUNKSIZE 8192 + +/* The function prototypes for the callbacks are basically the same as for + * the stdio functions fread, fseek, fclose, ftell. + * The one difference is that the FILE * arguments have been replaced with + * a void * - this is to be used as a pointer to whatever internal data these + * functions might need. In the stdio case, it's just a FILE * cast to a void * + * + * If you use other functions, check the docs for these functions and return + * the right values. For seek_func(), you *MUST* return -1 if the stream is + * unseekable + */ +typedef struct { + size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource); + int (*seek_func) (void *datasource, ogg_int64_t offset, int whence); + int (*close_func) (void *datasource); + long (*tell_func) (void *datasource); +} ov_callbacks; + +#define NOTOPEN 0 +#define PARTOPEN 1 +#define OPENED 2 +#define STREAMSET 3 +#define INITSET 4 + +typedef struct OggVorbis_File { + void *datasource; /* Pointer to a FILE *, etc. */ + int seekable; + ogg_int64_t offset; + ogg_int64_t end; + ogg_sync_state oy; + + /* If the FILE handle isn't seekable (eg, a pipe), only the current + stream appears */ + int links; + ogg_int64_t *offsets; + ogg_int64_t *dataoffsets; + long *serialnos; + ogg_int64_t *pcmlengths; + vorbis_info *vi; + vorbis_comment *vc; + + /* Decoding working state local storage */ + ogg_int64_t pcm_offset; + int ready_state; + long current_serialno; + int current_link; + + ogg_int64_t bittrack; + ogg_int64_t samptrack; + + ogg_stream_state os; /* take physical pages, weld into a logical + stream of packets */ + vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ + vorbis_block vb; /* local working space for packet->PCM decode */ + + ov_callbacks callbacks; + +} OggVorbis_File; + +extern int ov_clear(OggVorbis_File *vf); +extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); + +extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes); +extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf, + char *initial, long ibytes, ov_callbacks callbacks); +extern int ov_test_open(OggVorbis_File *vf); + +extern long ov_bitrate(OggVorbis_File *vf,int i); +extern long ov_bitrate_instant(OggVorbis_File *vf); +extern long ov_streams(OggVorbis_File *vf); +extern long ov_seekable(OggVorbis_File *vf); +extern long ov_serialnumber(OggVorbis_File *vf,int i); + +extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i); +extern ogg_int64_t ov_time_total(OggVorbis_File *vf,int i); + +extern int ov_raw_seek(OggVorbis_File *vf,long pos); +extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek(OggVorbis_File *vf,ogg_int64_t pos); +extern int ov_time_seek_page(OggVorbis_File *vf,ogg_int64_t pos); + +extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf); +extern ogg_int64_t ov_time_tell(OggVorbis_File *vf); + +extern vorbis_info *ov_info(OggVorbis_File *vf,int link); +extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link); + +extern long ov_read(OggVorbis_File *vf,char *buffer,int length, + int *bitstream); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif + + -- cgit v1.2.1