mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 22622 to svn://svn.ffmpeg.org/ffmpeg/trunkrelease/0.6
Reimar Döffinger
15 years ago
parent
8de0859bcb
commit
c787cb339e
4 changed files with 155 additions and 55 deletions
@ -0,0 +1,50 @@ |
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/*
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* Generate a header file for hardcoded DV tables |
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* |
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* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdlib.h> |
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#define CONFIG_HARDCODED_TABLES 0 |
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#ifndef CONFIG_SMALL |
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#error CONFIG_SMALL must be defined to generate tables |
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#endif |
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#include "dv_tablegen.h" |
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#include "tableprint.h" |
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#include <inttypes.h> |
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WRITE_1D_FUNC_ARGV(vlc_pair, struct dv_vlc_pair, 7, |
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"{0x%"PRIx32", %"PRId8"}", data[i].vlc, data[i].size) |
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WRITE_2D_FUNC(vlc_pair, struct dv_vlc_pair) |
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void tableinit(void) |
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{ |
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dv_vlc_map_tableinit(); |
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} |
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const struct tabledef tables[] = { |
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{ |
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"static const struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE]", |
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write_vlc_pair_2d_array, |
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dv_vlc_map, |
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DV_VLC_MAP_RUN_SIZE, |
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DV_VLC_MAP_LEV_SIZE |
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}, |
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{ NULL } |
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}; |
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@ -0,0 +1,96 @@ |
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/*
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* Header file for hardcoded DV tables |
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* |
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* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef DV_TABLEGEN_H |
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#define DV_TABLEGEN_H |
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#include <stdint.h> |
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#include "dv_vlc_data.h" |
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#if CONFIG_SMALL |
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#define DV_VLC_MAP_RUN_SIZE 15 |
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#define DV_VLC_MAP_LEV_SIZE 23 |
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#else |
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#define DV_VLC_MAP_RUN_SIZE 64 |
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#define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
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#endif |
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/* VLC encoding lookup table */ |
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struct dv_vlc_pair { |
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uint32_t vlc; |
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uint32_t size; |
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}; |
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#if CONFIG_HARDCODED_TABLES |
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#define dv_vlc_map_tableinit() |
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#include "libavcodec/dv_tables.h" |
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#else |
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static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE]; |
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static void dv_vlc_map_tableinit(void) |
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{ |
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int i, j; |
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for (i = 0; i < NB_DV_VLC - 1; i++) { |
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if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE) |
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continue; |
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#if CONFIG_SMALL |
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if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE) |
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continue; |
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#endif |
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if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0) |
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continue; |
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dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc = |
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dv_vlc_bits[i] << (!!dv_vlc_level[i]); |
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dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size = |
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dv_vlc_len[i] + (!!dv_vlc_level[i]); |
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} |
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for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) { |
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#if CONFIG_SMALL |
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for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) { |
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if (dv_vlc_map[i][j].size == 0) { |
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dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc | |
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(dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size)); |
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dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size + |
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dv_vlc_map[0][j].size; |
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} |
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} |
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#else |
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for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) { |
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if (dv_vlc_map[i][j].size == 0) { |
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dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc | |
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(dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size)); |
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dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size + |
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dv_vlc_map[0][j].size; |
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} |
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dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc = |
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dv_vlc_map[i][j].vlc | 1; |
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dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size = |
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dv_vlc_map[i][j].size; |
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} |
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#endif |
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} |
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} |
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#endif /* CONFIG_HARDCODED_TABLES */ |
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#endif /* DV_TABLEGEN_H */ |
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