Esempio n. 1
0
static int read_old_huffman_tables(HYuvContext *s){
#if 1
    GetBitContext gb;
    int i;

    init_get_bits(&gb, classic_shift_luma, classic_shift_luma_table_size*8);
    if(read_len_table(s->len[0], &gb)<0)
        return -1;
    init_get_bits(&gb, classic_shift_chroma, classic_shift_chroma_table_size*8);
    if(read_len_table(s->len[1], &gb)<0)
        return -1;

    for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma  [i];
    for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];

    if(s->bitstream_bpp >= 24){
        memcpy(s->bits[1], s->bits[0], 256*sizeof(uint32_t));
        memcpy(s->len[1] , s->len [0], 256*sizeof(uint8_t));
    }
    memcpy(s->bits[2], s->bits[1], 256*sizeof(uint32_t));
    memcpy(s->len[2] , s->len [1], 256*sizeof(uint8_t));

    for(i=0; i<3; i++){
        ff_free_vlc(&s->vlc[i]);
        init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
    }

    generate_joint_tables(s);

    return 0;
#else
    av_log(s->avctx, AV_LOG_DEBUG, "v1 huffyuv is not supported \n");
    return -1;
#endif
}
Esempio n. 2
0
static int read_old_huffman_tables(HYuvContext *s){
#if 1
    GetBitContext gb;
    int i;

    init_get_bits(&gb, classic_shift_luma, sizeof(classic_shift_luma)*8);
    read_len_table(s->len[0], &gb);
    init_get_bits(&gb, classic_shift_chroma, sizeof(classic_shift_chroma)*8);
    read_len_table(s->len[1], &gb);
    
    for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma  [i];
    for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];

    if(s->bitstream_bpp >= 24){
        memcpy(s->bits[1], s->bits[0], 256*sizeof(uint32_t));
        memcpy(s->len[1] , s->len [0], 256*sizeof(uint8_t));
    }
    memcpy(s->bits[2], s->bits[1], 256*sizeof(uint32_t));
    memcpy(s->len[2] , s->len [1], 256*sizeof(uint8_t));
    
    for(i=0; i<3; i++){
        free_vlc(&s->vlc[i]);
        init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
    }
    
    return 0;
#else
    fprintf(stderr, "v1 huffyuv is not supported \n");
    return -1;
#endif
}
Esempio n. 3
0
static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
{
    GetBitContext gb;
    int i, ret;
    int count = 3;

    if ((ret = init_get_bits(&gb, src, length * 8)) < 0)
        return ret;

    if (s->version > 2)
        count = 1 + s->alpha + 2*s->chroma;

    for (i = 0; i < count; i++) {
        if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
            return ret;
        if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
            return ret;
        ff_free_vlc(&s->vlc[i]);
        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
                           s->bits[i], 4, 4, 0)) < 0)
            return ret;
    }

    if ((ret = generate_joint_tables(s)) < 0)
        return ret;

    return (get_bits_count(&gb) + 7) / 8;
}
Esempio n. 4
0
static int read_huffman_tables(HYuvContext *s, uint8_t *src, int length){
    GetBitContext gb;
    int i;

    init_get_bits(&gb, src, length*8);

    for(i=0; i<3; i++){
        if(read_len_table(s->len[i], &gb)<0)
            return -1;
        if(generate_bits_table(s->bits[i], s->len[i])<0){
            return -1;
        }
#if 0
for(j=0; j<256; j++){
printf("%6X, %2d,  %3d\n", s->bits[i][j], s->len[i][j], j);
}
#endif
        free_vlc(&s->vlc[i]);
        init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
    }

    generate_joint_tables(s);

    return (get_bits_count(&gb)+7)/8;
}
Esempio n. 5
0
static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
{
    GetBitContext gb;
    int i;
    int ret;

    init_get_bits(&gb, src, length * 8);

    for (i = 0; i < 3; i++) {
        if (read_len_table(s->len[i], &gb) < 0)
            return -1;
        if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
            return -1;
        }
        ff_free_vlc(&s->vlc[i]);
        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
                           s->bits[i], 4, 4, 0)) < 0)
            return ret;
    }

    if ((ret = generate_joint_tables(s)) < 0)
        return ret;

    return (get_bits_count(&gb) + 7) / 8;
}
Esempio n. 6
0
static int read_old_huffman_tables(HYuvContext *s)
{
    GetBitContext gb;
    int i, ret;

    if ((ret = init_get_bits(&gb, classic_shift_luma,
                             classic_shift_luma_table_size * 8)) < 0)
        return ret;
    if ((ret = read_len_table(s->len[0], &gb)) < 0)
        return ret;

    if ((ret = init_get_bits(&gb, classic_shift_chroma,
                             classic_shift_chroma_table_size * 8)) < 0)
        return ret;
    if ((ret = read_len_table(s->len[1], &gb)) < 0)
        return ret;

    for (i = 0; i < 256; i++)
        s->bits[0][i] = classic_add_luma[i];
    for (i = 0; i < 256; i++)
        s->bits[1][i] = classic_add_chroma[i];

    if (s->bitstream_bpp >= 24) {
        memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
        memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
    }
    memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
    memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));

    for (i = 0; i < 3; i++) {
        ff_free_vlc(&s->vlc[i]);
        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
                            s->bits[i], 4, 4, 0)) < 0)
            return ret;
    }

    if ((ret = generate_joint_tables(s)) < 0)
        return ret;

    return 0;
}