oggz_private.h 5.99 KB
Newer Older
andre's avatar
andre committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
/*
   Copyright (C) 2003 Commonwealth Scientific and Industrial Research
   Organisation (CSIRO) Australia

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   - Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

   - Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

   - Neither the name of CSIRO Australia nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef __OGGZ_PRIVATE_H__
#define __OGGZ_PRIVATE_H__

conrad's avatar
conrad committed
36
37
#include <stdio.h>

andre's avatar
andre committed
38
39
40
#include <ogg/ogg.h>
#include <oggz/oggz_constants.h>

conrad's avatar
conrad committed
41
#include "oggz_macros.h"
andre's avatar
andre committed
42
43
44
#include "oggz_vector.h"

typedef struct _OGGZ OGGZ;
45
typedef struct _OggzIO OggzIO;
andre's avatar
andre committed
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
typedef struct _OggzReader OggzReader;
typedef struct _OggzWriter OggzWriter;

typedef int (*OggzReadPacket) (OGGZ * oggz, ogg_packet * op, long serialno,
			       void * user_data);

typedef ogg_int64_t (*OggzMetric) (OGGZ * oggz, long serialno,
				   ogg_int64_t granulepos,
				   void * user_data);

typedef int (*OggzOrder) (OGGZ * oggz, ogg_packet * op, void * target,
			  void * user_data);

typedef int (*OggzWriteHungry) (OGGZ * oggz, int empty, void * user_data);

61
62
63
64
65
66
67
/* oggz_io */
typedef size_t (*OggzIORead) (void * user_handle, void * buf, size_t n);
typedef size_t (*OggzIOWrite) (void * user_handle, void * buf, size_t n);
typedef int (*OggzIOSeek) (void * user_handle, long offset, int whence);
typedef long (*OggzIOTell) (void * user_handle);
typedef int (*OggzIOFlush) (void * user_handle);

andre's avatar
andre committed
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
typedef struct {
  ogg_stream_state ogg_stream;

  /* non b_o_s packet has been written (not just queued) */
  int delivered_non_b_o_s;

  int b_o_s; /* beginning of stream */
  int e_o_s; /* end of stream */
  ogg_int64_t granulepos;
  ogg_int64_t packetno;

  OggzMetric metric;
  void * metric_user_data;
  int metric_internal;

  OggzOrder order;
  void * order_user_data;

  OggzReadPacket read_packet;
  void * read_user_data;
} oggz_stream_t;

struct _OggzReader {
  ogg_sync_state ogg_sync;

  /* XXX: these two can prolly be removed again :) */
  ogg_stream_state ogg_stream;
  long current_serialno;

  OggzReadPacket read_packet;
  void * read_user_data;

  ogg_int64_t current_unit;

#if 0
  off_t offset_page_end; /* offset of end of current page */
#endif
};

/**
 * Bundle a packet with the stream it is being queued for; used in
 * the packet_queue vector
 */
typedef struct {
  ogg_packet op;
  oggz_stream_t * stream;
  int flush;
  int * guard;
} oggz_writer_packet_t;

enum oggz_writer_state {
  OGGZ_MAKING_PACKETS = 0,
  OGGZ_WRITING_PAGES = 1
};

struct _OggzWriter {
  oggz_writer_packet_t * next_zpacket; /* stashed in case of FLUSH_BEFORE */
conrad's avatar
conrad committed
125
  OggzVector * packet_queue;
andre's avatar
andre committed
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

  OggzWriteHungry hungry;
  void * hungry_user_data;
  int hungry_only_when_empty;

  int writing; /* already mid-write; check for recursive writes */
  int state; /* OGGZ_MAKING_PACKETS or OGGZ_WRITING_PAGES */

  int flushing; /* whether current packet is being flushed or just paged out */

  int eog; /* end of page */
#if 0
  int eop; /* end of packet */
#endif
  int eos; /* end of stream */

  oggz_writer_packet_t * current_zpacket;

  int packet_offset; /* n bytes already copied out of current packet */
  int page_offset; /* n bytes already copied out of current page */

  ogg_stream_state * current_stream;
};

150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
struct _OggzIO {
  OggzIORead read;
  void * read_user_handle;

  OggzIOWrite write;
  void * write_user_handle;

  OggzIOSeek seek;
  void * seek_user_handle;

  OggzIOTell tell;
  void * tell_user_handle;

  OggzIOFlush flush;
  void * flush_user_handle;
};

andre's avatar
andre committed
167
168
struct _OGGZ {
  int flags;
conrad's avatar
conrad committed
169
  FILE * file;
170
  OggzIO * io;
andre's avatar
andre committed
171
172
173
174
175
176
177

  ogg_packet current_packet;
  ogg_page current_page;

  off_t offset; /* offset of current page start */
  off_t offset_data_begin; /* offset of unit 0 page start */

conrad's avatar
conrad committed
178
  OggzVector * streams;
andre's avatar
andre committed
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
  int all_at_eos; /* all streams are at eos */

  OggzMetric metric;
  void * metric_user_data;
  int metric_internal;

  OggzOrder order;
  void * order_user_data;

  union {
    OggzReader reader;
    OggzWriter writer;
  } x;
};

OGGZ * oggz_read_init (OGGZ * oggz);
OGGZ * oggz_read_close (OGGZ * oggz);

OGGZ * oggz_write_init (OGGZ * oggz);
OGGZ * oggz_write_close (OGGZ * oggz);

oggz_stream_t * oggz_get_stream (OGGZ * oggz, long serialno);
oggz_stream_t * oggz_add_stream (OGGZ * oggz, long serialno);

int oggz_get_bos (OGGZ * oggz, long serialno);
ogg_int64_t oggz_get_unit (OGGZ * oggz, long serialno, ogg_int64_t granulepos);

conrad's avatar
conrad committed
206
207
208
int oggz_set_metric_internal (OGGZ * oggz, long serialno, OggzMetric metric,
			      void * user_data, int internal);

209
210
int oggz_purge (OGGZ * oggz);

conrad's avatar
conrad committed
211
212
int oggz_auto (OGGZ * oggz, ogg_packet * op, long serialno, void * user_data);

213
214
215
216
217
218
219
/* oggz_io */
size_t oggz_io_read (OGGZ * oggz, void * buf, size_t n);
size_t oggz_io_write (OGGZ * oggz, void * buf, size_t n);
int oggz_io_seek (OGGZ * oggz, long offset, int whence);
long oggz_io_tell (OGGZ * oggz);
int oggz_io_flush (OGGZ * oggz);

andre's avatar
andre committed
220
#endif /* __OGGZ_PRIVATE_H__ */