--- /dev/null
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function: stdio-based convenience library for opening/seeking/decoding
+ last mod: $Id: vorbisfile.h 17182 2010-04-29 03:48:32Z xiphmont $
+
+ ********************************************************************/
+
+#ifndef _OV_FILE_H_
+#define _OV_FILE_H_
+
+#define OV_EXCLUDE_STATIC_CALLBACKS
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#include <stdio.h>
+#include "codec.h"
+
+/* 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;
+
+#ifndef OV_EXCLUDE_STATIC_CALLBACKS
+
+/* a few sets of convenient callbacks, especially for use under
+ * Windows where ov_open_callbacks() should always be used instead of
+ * ov_open() to avoid problems with incompatible crt.o version linking
+ * issues. */
+
+static int _ov_header_fseek_wrap(FILE *f,ogg_int64_t off,int whence){
+ if(f==NULL)return(-1);
+
+#ifdef __MINGW32__
+ return fseeko64(f,off,whence);
+#elif defined (_WIN32)
+ return _fseeki64(f,off,whence);
+#else
+ return fseek(f,off,whence);
+#endif
+}
+
+/* These structs below (OV_CALLBACKS_DEFAULT etc) are defined here as
+ * static data. That means that every file which includes this header
+ * will get its own copy of these structs whether it uses them or
+ * not unless it #defines OV_EXCLUDE_STATIC_CALLBACKS.
+ * These static symbols are essential on platforms such as Windows on
+ * which several different versions of stdio support may be linked to
+ * by different DLLs, and we need to be certain we know which one
+ * we're using (the same one as the main application).
+ */
+
+static ov_callbacks OV_CALLBACKS_DEFAULT = {
+ (size_t (*)(void *, size_t, size_t, void *)) fread,
+ (int (*)(void *, ogg_int64_t, int)) _ov_header_fseek_wrap,
+ (int (*)(void *)) fclose,
+ (long (*)(void *)) ftell
+};
+
+static ov_callbacks OV_CALLBACKS_NOCLOSE = {
+ (size_t (*)(void *, size_t, size_t, void *)) fread,
+ (int (*)(void *, ogg_int64_t, int)) _ov_header_fseek_wrap,
+ (int (*)(void *)) NULL,
+ (long (*)(void *)) ftell
+};
+
+static ov_callbacks OV_CALLBACKS_STREAMONLY = {
+ (size_t (*)(void *, size_t, size_t, void *)) fread,
+ (int (*)(void *, ogg_int64_t, int)) NULL,
+ (int (*)(void *)) fclose,
+ (long (*)(void *)) NULL
+};
+
+static ov_callbacks OV_CALLBACKS_STREAMONLY_NOCLOSE = {
+ (size_t (*)(void *, size_t, size_t, void *)) fread,
+ (int (*)(void *, ogg_int64_t, int)) NULL,
+ (int (*)(void *)) NULL,
+ (long (*)(void *)) NULL
+};
+
+#endif
+
+#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; /* overloaded to maintain binary
+ compatibility; x2 size, stores both
+ beginning and end values */
+ 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;
+
+ double bittrack;
+ double 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_fopen(const char *path,OggVorbis_File *vf);
+extern int ov_open(FILE *f,OggVorbis_File *vf,const char *initial,long ibytes);
+extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf,
+ const char *initial, long ibytes, ov_callbacks callbacks);
+
+extern int ov_test(FILE *f,OggVorbis_File *vf,const char *initial,long ibytes);
+extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf,
+ const 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 double ov_time_total(OggVorbis_File *vf,int i);
+
+extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t 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,double pos);
+extern int ov_time_seek_page(OggVorbis_File *vf,double pos);
+
+extern int ov_raw_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek_page_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_time_seek_lap(OggVorbis_File *vf,double pos);
+extern int ov_time_seek_page_lap(OggVorbis_File *vf,double pos);
+
+extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf);
+extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf);
+extern double 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_float(OggVorbis_File *vf,float ***pcm_channels,int samples,
+ int *bitstream);
+extern long ov_read_filter(OggVorbis_File *vf,char *buffer,int length,
+ int bigendianp,int word,int sgned,int *bitstream,
+ void (*filter)(float **pcm,long channels,long samples,void *filter_param),void *filter_param);
+extern long ov_read(OggVorbis_File *vf,char *buffer,int length,
+ int bigendianp,int word,int sgned,int *bitstream);
+extern int ov_crosslap(OggVorbis_File *vf1,OggVorbis_File *vf2);
+
+extern int ov_halfrate(OggVorbis_File *vf,int flag);
+extern int ov_halfrate_p(OggVorbis_File *vf);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
+
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