yading@10: /*
yading@10:  * Header file for hardcoded DV tables
yading@10:  *
yading@10:  * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_DV_TABLEGEN_H
yading@10: #define AVCODEC_DV_TABLEGEN_H
yading@10: 
yading@10: #include <stdint.h>
yading@10: 
yading@10: #include "dv_vlc_data.h"
yading@10: 
yading@10: #if CONFIG_SMALL
yading@10: #define DV_VLC_MAP_RUN_SIZE 15
yading@10: #define DV_VLC_MAP_LEV_SIZE 23
yading@10: #else
yading@10: #define DV_VLC_MAP_RUN_SIZE  64
yading@10: #define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
yading@10: #endif
yading@10: 
yading@10: /* VLC encoding lookup table */
yading@10: typedef struct dv_vlc_pair {
yading@10:    uint32_t vlc;
yading@10:    uint32_t size;
yading@10: } dv_vlc_pair;
yading@10: 
yading@10: #if CONFIG_HARDCODED_TABLES
yading@10: #define dv_vlc_map_tableinit()
yading@10: #include "libavcodec/dv_tables.h"
yading@10: #else
yading@10: static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
yading@10: 
yading@10: static void dv_vlc_map_tableinit(void)
yading@10: {
yading@10:     int i, j;
yading@10:     for (i = 0; i < NB_DV_VLC - 1; i++) {
yading@10:        if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
yading@10:            continue;
yading@10: #if CONFIG_SMALL
yading@10:        if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
yading@10:            continue;
yading@10: #endif
yading@10: 
yading@10:        if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
yading@10:            continue;
yading@10: 
yading@10:        dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc  =
yading@10:            dv_vlc_bits[i] << (!!dv_vlc_level[i]);
yading@10:        dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size =
yading@10:            dv_vlc_len[i] + (!!dv_vlc_level[i]);
yading@10:     }
yading@10:     for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
yading@10: #if CONFIG_SMALL
yading@10:        for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
yading@10:           if (dv_vlc_map[i][j].size == 0) {
yading@10:               dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
yading@10:                         (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
yading@10:               dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
yading@10:                                       dv_vlc_map[0][j].size;
yading@10:           }
yading@10:        }
yading@10: #else
yading@10:        for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) {
yading@10:           if (dv_vlc_map[i][j].size == 0) {
yading@10:               dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
yading@10:                         (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
yading@10:               dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
yading@10:                                       dv_vlc_map[0][j].size;
yading@10:           }
yading@10:           dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
yading@10:                                         dv_vlc_map[i][j].vlc | 1;
yading@10:           dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
yading@10:                                         dv_vlc_map[i][j].size;
yading@10:        }
yading@10: #endif
yading@10:     }
yading@10: }
yading@10: #endif /* CONFIG_HARDCODED_TABLES */
yading@10: 
yading@10: #endif /* AVCODEC_DV_TABLEGEN_H */