diff options
author | Thilo Borgmann <thilo.borgmann@googlemail.com> | 2009-11-14 14:49:48 +0300 |
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committer | Thilo Borgmann <thilo.borgmann@googlemail.com> | 2009-11-14 14:49:48 +0300 |
commit | 25c4fddadc9df2d0101612febf648968a55b3175 (patch) | |
tree | 89be43429227e61c4bcab25f37b639d7e3358626 /libavcodec | |
parent | 1bf83b9548957e49d90804a035529085df4b872a (diff) |
Merge data tables from als_data.h with the decoder source to reduce
code complexity.
Originally committed as revision 20536 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/als_data.h | 105 | ||||
-rw-r--r-- | libavcodec/alsdec.c | 74 |
2 files changed, 73 insertions, 106 deletions
diff --git a/libavcodec/als_data.h b/libavcodec/als_data.h deleted file mode 100644 index bcde466064..0000000000 --- a/libavcodec/als_data.h +++ /dev/null @@ -1,105 +0,0 @@ -/* - * ALS header file for common data - * Copyright (c) 2009 Thilo Borgmann <thilo.borgmann _at_ googlemail.com> - * - * 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 - */ - -#ifndef AVCODEC_ALS_DATA_H -#define AVCODEC_ALS_DATA_H - -/** - * @file libavcodec/als_data.h - * MPEG-4 ALS common data tables - * @author Thilo Borgmann <thilo.borgmann _at_ googlemail.com> - */ - - -#include <stdint.h> - -/** Rice parameters and corresponding index offsets for decoding the - * indices of scaled PARCOR values. The table choosen is set globally - * by the encoder and stored in ALSSpecificConfig. - */ -static const int8_t parcor_rice_table[3][20][2] = { - { {-52, 4}, {-29, 5}, {-31, 4}, { 19, 4}, {-16, 4}, - { 12, 3}, { -7, 3}, { 9, 3}, { -5, 3}, { 6, 3}, - { -4, 3}, { 3, 3}, { -3, 2}, { 3, 2}, { -2, 2}, - { 3, 2}, { -1, 2}, { 2, 2}, { -1, 2}, { 2, 2} }, - { {-58, 3}, {-42, 4}, {-46, 4}, { 37, 5}, {-36, 4}, - { 29, 4}, {-29, 4}, { 25, 4}, {-23, 4}, { 20, 4}, - {-17, 4}, { 16, 4}, {-12, 4}, { 12, 3}, {-10, 4}, - { 7, 3}, { -4, 4}, { 3, 3}, { -1, 3}, { 1, 3} }, - { {-59, 3}, {-45, 5}, {-50, 4}, { 38, 4}, {-39, 4}, - { 32, 4}, {-30, 4}, { 25, 3}, {-23, 3}, { 20, 3}, - {-20, 3}, { 16, 3}, {-13, 3}, { 10, 3}, { -7, 3}, - { 3, 3}, { 0, 3}, { -1, 3}, { 2, 3}, { -1, 2} } -}; - - -/** Scaled PARCOR values used for the first two PARCOR coefficients. - * To be indexed by the Rice coded indices. - * Generated by: parcor_scaled_values[i] = 32 + ((i * (i+1)) << 7) - (1 << 20) - * Actual values are divided by 32 in order to be stored in 16 bits. - */ -static const int16_t parcor_scaled_values[] = { - -1048544 / 32, -1048288 / 32, -1047776 / 32, -1047008 / 32, - -1045984 / 32, -1044704 / 32, -1043168 / 32, -1041376 / 32, - -1039328 / 32, -1037024 / 32, -1034464 / 32, -1031648 / 32, - -1028576 / 32, -1025248 / 32, -1021664 / 32, -1017824 / 32, - -1013728 / 32, -1009376 / 32, -1004768 / 32, -999904 / 32, - -994784 / 32, -989408 / 32, -983776 / 32, -977888 / 32, - -971744 / 32, -965344 / 32, -958688 / 32, -951776 / 32, - -944608 / 32, -937184 / 32, -929504 / 32, -921568 / 32, - -913376 / 32, -904928 / 32, -896224 / 32, -887264 / 32, - -878048 / 32, -868576 / 32, -858848 / 32, -848864 / 32, - -838624 / 32, -828128 / 32, -817376 / 32, -806368 / 32, - -795104 / 32, -783584 / 32, -771808 / 32, -759776 / 32, - -747488 / 32, -734944 / 32, -722144 / 32, -709088 / 32, - -695776 / 32, -682208 / 32, -668384 / 32, -654304 / 32, - -639968 / 32, -625376 / 32, -610528 / 32, -595424 / 32, - -580064 / 32, -564448 / 32, -548576 / 32, -532448 / 32, - -516064 / 32, -499424 / 32, -482528 / 32, -465376 / 32, - -447968 / 32, -430304 / 32, -412384 / 32, -394208 / 32, - -375776 / 32, -357088 / 32, -338144 / 32, -318944 / 32, - -299488 / 32, -279776 / 32, -259808 / 32, -239584 / 32, - -219104 / 32, -198368 / 32, -177376 / 32, -156128 / 32, - -134624 / 32, -112864 / 32, -90848 / 32, -68576 / 32, - -46048 / 32, -23264 / 32, -224 / 32, 23072 / 32, - 46624 / 32, 70432 / 32, 94496 / 32, 118816 / 32, - 143392 / 32, 168224 / 32, 193312 / 32, 218656 / 32, - 244256 / 32, 270112 / 32, 296224 / 32, 322592 / 32, - 349216 / 32, 376096 / 32, 403232 / 32, 430624 / 32, - 458272 / 32, 486176 / 32, 514336 / 32, 542752 / 32, - 571424 / 32, 600352 / 32, 629536 / 32, 658976 / 32, - 688672 / 32, 718624 / 32, 748832 / 32, 779296 / 32, - 810016 / 32, 840992 / 32, 872224 / 32, 903712 / 32, - 935456 / 32, 967456 / 32, 999712 / 32, 1032224 / 32 -}; - - -/** Gain values of p(0) for long-term prediction. - * To be indexed by the Rice coded indices. - */ -static const uint8_t ltp_gain_values [4][4] = { - { 0, 8, 16, 24}, - {32, 40, 48, 56}, - {64, 70, 76, 82}, - {88, 92, 96, 100} -}; - -#endif /* AVCODEC_ALS_DATA_H */ diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index a2f70aabaa..064e143f74 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -35,7 +35,79 @@ #include "mpeg4audio.h" #include "bytestream.h" -#include "als_data.h" +#include <stdint.h> + +/** Rice parameters and corresponding index offsets for decoding the + * indices of scaled PARCOR values. The table choosen is set globally + * by the encoder and stored in ALSSpecificConfig. + */ +static const int8_t parcor_rice_table[3][20][2] = { + { {-52, 4}, {-29, 5}, {-31, 4}, { 19, 4}, {-16, 4}, + { 12, 3}, { -7, 3}, { 9, 3}, { -5, 3}, { 6, 3}, + { -4, 3}, { 3, 3}, { -3, 2}, { 3, 2}, { -2, 2}, + { 3, 2}, { -1, 2}, { 2, 2}, { -1, 2}, { 2, 2} }, + { {-58, 3}, {-42, 4}, {-46, 4}, { 37, 5}, {-36, 4}, + { 29, 4}, {-29, 4}, { 25, 4}, {-23, 4}, { 20, 4}, + {-17, 4}, { 16, 4}, {-12, 4}, { 12, 3}, {-10, 4}, + { 7, 3}, { -4, 4}, { 3, 3}, { -1, 3}, { 1, 3} }, + { {-59, 3}, {-45, 5}, {-50, 4}, { 38, 4}, {-39, 4}, + { 32, 4}, {-30, 4}, { 25, 3}, {-23, 3}, { 20, 3}, + {-20, 3}, { 16, 3}, {-13, 3}, { 10, 3}, { -7, 3}, + { 3, 3}, { 0, 3}, { -1, 3}, { 2, 3}, { -1, 2} } +}; + + +/** Scaled PARCOR values used for the first two PARCOR coefficients. + * To be indexed by the Rice coded indices. + * Generated by: parcor_scaled_values[i] = 32 + ((i * (i+1)) << 7) - (1 << 20) + * Actual values are divided by 32 in order to be stored in 16 bits. + */ +static const int16_t parcor_scaled_values[] = { + -1048544 / 32, -1048288 / 32, -1047776 / 32, -1047008 / 32, + -1045984 / 32, -1044704 / 32, -1043168 / 32, -1041376 / 32, + -1039328 / 32, -1037024 / 32, -1034464 / 32, -1031648 / 32, + -1028576 / 32, -1025248 / 32, -1021664 / 32, -1017824 / 32, + -1013728 / 32, -1009376 / 32, -1004768 / 32, -999904 / 32, + -994784 / 32, -989408 / 32, -983776 / 32, -977888 / 32, + -971744 / 32, -965344 / 32, -958688 / 32, -951776 / 32, + -944608 / 32, -937184 / 32, -929504 / 32, -921568 / 32, + -913376 / 32, -904928 / 32, -896224 / 32, -887264 / 32, + -878048 / 32, -868576 / 32, -858848 / 32, -848864 / 32, + -838624 / 32, -828128 / 32, -817376 / 32, -806368 / 32, + -795104 / 32, -783584 / 32, -771808 / 32, -759776 / 32, + -747488 / 32, -734944 / 32, -722144 / 32, -709088 / 32, + -695776 / 32, -682208 / 32, -668384 / 32, -654304 / 32, + -639968 / 32, -625376 / 32, -610528 / 32, -595424 / 32, + -580064 / 32, -564448 / 32, -548576 / 32, -532448 / 32, + -516064 / 32, -499424 / 32, -482528 / 32, -465376 / 32, + -447968 / 32, -430304 / 32, -412384 / 32, -394208 / 32, + -375776 / 32, -357088 / 32, -338144 / 32, -318944 / 32, + -299488 / 32, -279776 / 32, -259808 / 32, -239584 / 32, + -219104 / 32, -198368 / 32, -177376 / 32, -156128 / 32, + -134624 / 32, -112864 / 32, -90848 / 32, -68576 / 32, + -46048 / 32, -23264 / 32, -224 / 32, 23072 / 32, + 46624 / 32, 70432 / 32, 94496 / 32, 118816 / 32, + 143392 / 32, 168224 / 32, 193312 / 32, 218656 / 32, + 244256 / 32, 270112 / 32, 296224 / 32, 322592 / 32, + 349216 / 32, 376096 / 32, 403232 / 32, 430624 / 32, + 458272 / 32, 486176 / 32, 514336 / 32, 542752 / 32, + 571424 / 32, 600352 / 32, 629536 / 32, 658976 / 32, + 688672 / 32, 718624 / 32, 748832 / 32, 779296 / 32, + 810016 / 32, 840992 / 32, 872224 / 32, 903712 / 32, + 935456 / 32, 967456 / 32, 999712 / 32, 1032224 / 32 +}; + + +/** Gain values of p(0) for long-term prediction. + * To be indexed by the Rice coded indices. + */ +static const uint8_t ltp_gain_values [4][4] = { + { 0, 8, 16, 24}, + {32, 40, 48, 56}, + {64, 70, 76, 82}, + {88, 92, 96, 100} +}; + enum RA_Flag { RA_FLAG_NONE, |