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Move some definitions to header file.

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Share them with upcoming demuxer module.

Signed-off-by: Vitaliy E Sugrobov <vsugrob@hotmail.com>
This commit is contained in:
Vitaliy E Sugrobov
2012-11-30 12:58:55 +04:00
committed by Paul B Mahol
parent de0cb7f070
commit 005cb97e3e
2 changed files with 48 additions and 10 deletions
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47
libavcodec/gif.h Executable file
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@ -0,0 +1,47 @@
/*
* GIF format definitions
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Baptiste Coudurier
* Copyright (c) 2012 Vitaliy E Sugrobov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* GIF format definitions.
*/
#ifndef AVCODEC_GIFDEFS_H
#define AVCODEC_GIFDEFS_H
#include <stdint.h>
static const uint8_t gif87a_sig[6] = "GIF87a";
static const uint8_t gif89a_sig[6] = "GIF89a";
#define GCE_DISPOSAL_NONE 0
#define GCE_DISPOSAL_INPLACE 1
#define GCE_DISPOSAL_BACKGROUND 2
#define GCE_DISPOSAL_RESTORE 3
#define GIF_TRAILER 0x3b
#define GIF_EXTENSION_INTRODUCER 0x21
#define GIF_IMAGE_SEPARATOR 0x2c
#define GIF_GCE_EXT_LABEL 0xf9
#endif /* AVCODEC_GIFDEFS_H */

11
libavcodec/gifdec.c
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@ -28,15 +28,8 @@
#include "avcodec.h" #include "avcodec.h"
#include "bytestream.h" #include "bytestream.h"
#include "lzw.h" #include "lzw.h"
#include "gif.h"
#define GCE_DISPOSAL_NONE 0
#define GCE_DISPOSAL_INPLACE 1
#define GCE_DISPOSAL_BACKGROUND 2
#define GCE_DISPOSAL_RESTORE 3
#define GIF_TRAILER 0x3b
#define GIF_EXTENSION_INTRODUCER 0x21
#define GIF_IMAGE_SEPARATOR 0x2c
#define GIF_GCE_EXT_LABEL 0xf9
/* This value is intentionally set to "transparent white" color. /* This value is intentionally set to "transparent white" color.
* It is much better to have white background instead of black * It is much better to have white background instead of black
* when gif image converted to format which not support transparency. * when gif image converted to format which not support transparency.
@ -83,8 +76,6 @@ typedef struct GifState {
int trans_color; /**< color value that is used instead of transparent color */ int trans_color; /**< color value that is used instead of transparent color */
} GifState; } GifState;
static const uint8_t gif87a_sig[6] = "GIF87a";
static const uint8_t gif89a_sig[6] = "GIF89a";
static void gif_read_palette(const uint8_t **buf, uint32_t *pal, int nb) static void gif_read_palette(const uint8_t **buf, uint32_t *pal, int nb)
{ {
const uint8_t *pal_end = *buf + nb * 3; const uint8_t *pal_end = *buf + nb * 3;