| 1 | /* |
| 2 | * GIF format definitions |
| 3 | * Copyright (c) 2003 Fabrice Bellard |
| 4 | * Copyright (c) 2006 Baptiste Coudurier |
| 5 | * Copyright (c) 2012 Vitaliy E Sugrobov |
| 6 | * |
| 7 | * This file is part of FFmpeg. |
| 8 | * |
| 9 | * FFmpeg is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * FFmpeg is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with FFmpeg; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @file |
| 26 | * GIF format definitions. |
| 27 | */ |
| 28 | |
| 29 | #ifndef AVCODEC_GIFDEFS_H |
| 30 | #define AVCODEC_GIFDEFS_H |
| 31 | |
| 32 | #include <stdint.h> |
| 33 | |
| 34 | static const uint8_t gif87a_sig[6] = "GIF87a"; |
| 35 | static const uint8_t gif89a_sig[6] = "GIF89a"; |
| 36 | |
| 37 | #define GCE_DISPOSAL_NONE 0 |
| 38 | #define GCE_DISPOSAL_INPLACE 1 |
| 39 | #define GCE_DISPOSAL_BACKGROUND 2 |
| 40 | #define GCE_DISPOSAL_RESTORE 3 |
| 41 | |
| 42 | #define GIF_TRAILER 0x3b |
| 43 | #define GIF_EXTENSION_INTRODUCER 0x21 |
| 44 | #define GIF_IMAGE_SEPARATOR 0x2c |
| 45 | #define GIF_GCE_EXT_LABEL 0xf9 |
| 46 | #define GIF_APP_EXT_LABEL 0xff |
| 47 | #define NETSCAPE_EXT_STR "NETSCAPE2.0" |
| 48 | |
| 49 | #endif /* AVCODEC_GIFDEFS_H */ |