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Torque/SDK/engine/audio/vorbisStream.h

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+/********************************************************************
+ *                                                                  *
+ * 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 1994-2001             *
+ * by the XIPHOPHORUS Company http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: stdio-based convenience library for opening/seeking/decoding
+
+ ********************************************************************/
+
+// modified vorbisfile to use Torque Streams
+// Kurtis Seebaldt
+
+
+#ifndef _OV_FILE_H_
+#define _OV_FILE_H_
+
+#include <stdio.h>
+#include "vorbis/codec.h"
+
+#ifndef _PLATFORM_H_
+#include "platform/platform.h"
+#endif
+#ifndef _RESMANAGER_H_
+#include "core/resManager.h"
+#endif
+
+/* 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)  (Stream *ptr, size_t size, size_t nmemb, void *datasource);
+//  int    (*seek_func)  (Stream *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 {
+  Stream           *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;
+
+  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;
+
+
+class OggVorbisFile {
+
+public:
+	OggVorbisFile();
+	~OggVorbisFile();
+	int ov_clear();
+	int ov_open(Stream *stream,char *initial,long ibytes);
+	int ov_open_callbacks(Stream *datasource,
+		char *initial, long ibytes);
+
+	int ov_test(Stream *stream,char *initial,long ibytes);
+	int ov_test_callbacks(Stream *datasource,
+		char *initial, long ibytes);
+	int ov_test_open();
+
+	long ov_bitrate(int i);
+	long ov_bitrate_instant();
+	long ov_streams();
+	long ov_seekable();
+	long ov_serialnumber(int i);
+
+	ogg_int64_t ov_raw_total(int i);
+	ogg_int64_t ov_pcm_total(int i);
+	double ov_time_total(int i);
+
+	int ov_raw_seek(long pos);
+	int ov_pcm_seek(ogg_int64_t pos);
+	int ov_pcm_seek_page(ogg_int64_t pos);
+	int ov_time_seek(double pos);
+	int ov_time_seek_page(double pos);
+
+	ogg_int64_t ov_raw_tell();
+	ogg_int64_t ov_pcm_tell();
+	double ov_time_tell();
+
+	vorbis_info *ov_info(int link);
+	vorbis_comment *ov_comment(int link);
+
+	long ov_read_float(float ***pcm_channels,
+			  int *bitstream);
+	long ov_read(char *buffer,int length,
+		    int bigendianp,int *bitstream);
+
+private:
+	OggVorbis_File *vf;
+
+	long _get_data();
+	void _seek_helper(long offset);
+	long _get_next_page(ogg_page *og,int boundary);
+	long _get_prev_page(ogg_page *og);
+	int _bisect_forward_serialno(long begin,long searched,long end,long currentno,long m);
+	int _fetch_headers(vorbis_info *vi,vorbis_comment *vc,long *serialno,ogg_page *og_ptr);
+	void _prefetch_all_headers(long dataoffset);
+	void _make_decode_ready();
+	int _open_seekable2();
+	void _decode_clear();
+	int _process_packet(int readp);
+	int _fseek64_wrap(Stream *stream,ogg_int64_t off,int whence);
+	int _ov_open1(Stream *stream,char *initial,long ibytes);
+	int _ov_open2();
+
+};
+
+#endif