utvideo.h 2.32 KB
Newer Older
1 2 3 4
/*
 * Common Ut Video header
 * Copyright (c) 2011 Konstantin Shishkov
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8 9 10 11
 * 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.
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13 14 15 16 17
 * 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
18
 * License along with FFmpeg; if not, write to the Free Software
19 20 21 22 23 24 25 26 27 28 29 30 31
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVCODEC_UTVIDEO_H
#define AVCODEC_UTVIDEO_H

/**
 * @file
 * Common Ut Video header
 */

#include "libavutil/common.h"
#include "avcodec.h"
32
#include "bswapdsp.h"
33
#include "huffyuvencdsp.h"
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

enum {
    PRED_NONE = 0,
    PRED_LEFT,
    PRED_GRADIENT,
    PRED_MEDIAN,
};

enum {
    COMP_NONE = 0,
    COMP_HUFF,
};

/*
 * "Original format" markers.
 * Based on values gotten from the official VFW encoder.
 * They are not used during decoding, but they do have
 * an informative role on seeing what was input
 * to the encoder.
 */
enum {
    UTVIDEO_RGB  = MKTAG(0x00, 0x00, 0x01, 0x18),
    UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18),
    UTVIDEO_420  = MKTAG('Y', 'V', '1', '2'),
    UTVIDEO_422  = MKTAG('Y', 'U', 'Y', '2'),
};

/* Mapping of libavcodec prediction modes to Ut Video's */
extern const int ff_ut_pred_order[5];

/* Order of RGB(A) planes in Ut Video */
extern const int ff_ut_rgb_order[4];

typedef struct UtvideoContext {
    AVCodecContext *avctx;
69
    BswapDSPContext bdsp;
70
    HuffYUVEncDSPContext hdsp;
71 72 73 74 75 76 77 78

    uint32_t frame_info_size, flags, frame_info;
    int      planes;
    int      slices;
    int      compression;
    int      interlaced;
    int      frame_pred;

79
    int      slice_stride;
80
    uint8_t *slice_bits, *slice_buffer[4];
81 82 83 84 85 86 87 88 89 90 91 92 93
    int      slice_bits_size;
} UtvideoContext;

typedef struct HuffEntry {
    uint8_t  sym;
    uint8_t  len;
    uint32_t code;
} HuffEntry;

/* Compare huffman tree nodes */
int ff_ut_huff_cmp_len(const void *a, const void *b);

#endif /* AVCODEC_UTVIDEO_H */