1 /*
2 * RAW Chinese AVS video demuxer
3 * Copyright (c) 2009 Stefan Gehrer <stefan.gehrer@gmx.de>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
25
26 #define CAVS_SEQ_START_CODE 0x000001b0
27 #define CAVS_PIC_I_START_CODE 0x000001b3
28 #define CAVS_UNDEF_START_CODE 0x000001b4
29 #define CAVS_PIC_PB_START_CODE 0x000001b6
30 #define CAVS_VIDEO_EDIT_CODE 0x000001b7
31 #define CAVS_PROFILE_JIZHUN 0x20
32
34 {
36 int pic=0, seq=0, slice_pos = 0;
38
39 while (ptr < end) {
41 if ((
code & 0xffffff00) == 0x100) {
43 /* slices have to be consecutive */
45 return 0;
47 } else {
48 slice_pos = 0;
49 }
51 seq++;
52 /* check for the only currently supported profile */
54 return 0;
57 pic++;
60 return 0;
61 }
62 }
63 }
64 if(seq && seq*9<=pic*10)
66 return 0;
67 }
68