1 /*
2 Copyright (C) 2008 Reimar Döffinger
3
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation
6 files (the "Software"), to deal in the Software without
7 restriction, including without limitation the rights to use, copy,
8 modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23 **/
24
25 #include <stdlib.h>
26
30
32
36
41 };
42
50
51 if (!spxp) {
53 if (!spxp)
56 }
57
59 return 0;
60
62 int frames_per_packet;
65
69 }
70
75 }
80 }
83
85 frames_per_packet =
AV_RL32(p + 64);
87 frames_per_packet < 0 ||
88 spxp->
packet_size * (int64_t)frames_per_packet > INT32_MAX / 256) {
92 }
93 if (frames_per_packet)
95
99
101 } else
103
105 return 1;
106 }
107
109 {
111 int packets = 0;
114 packets++;
115 return packets;
116 }
117
119 {
120 struct ogg *
ogg =
s->priv_data;
124
127 /* first packet of final page. we have to calculate the final packet
128 duration here because it is the only place we know the next-to-last
129 granule position. */
132 }
133
135 /* first packet */
140 /* final packet */
142 else
144
145 return 0;
146 }
147
150 .magicsize = 8,
153 .nb_header = 2,
154 };