X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.0%2Flibzmpeg3%2Fa52dec-0.7.3%2Fliba52%2Fdownmix.c;fp=cinelerra-5.0%2Flibzmpeg3%2Fa52dec-0.7.3%2Fliba52%2Fdownmix.c;h=0000000000000000000000000000000000000000;hb=30bdb85eb33a8ee7ba675038a86c6be59c43d7bd;hp=b9ac1fdeaaff66b8dfdd653eb8fc494a891e3e4f;hpb=52fcc46226f9df46f9ce9d0566dc568455a7db0b;p=goodguy%2Fhistory.git diff --git a/cinelerra-5.0/libzmpeg3/a52dec-0.7.3/liba52/downmix.c b/cinelerra-5.0/libzmpeg3/a52dec-0.7.3/liba52/downmix.c deleted file mode 100644 index b9ac1fde..00000000 --- a/cinelerra-5.0/libzmpeg3/a52dec-0.7.3/liba52/downmix.c +++ /dev/null @@ -1,655 +0,0 @@ -/* - * downmix.c - * Copyright (C) 2000-2002 Michel Lespinasse - * Copyright (C) 1999-2000 Aaron Holtzman - * - * This file is part of a52dec, a free ATSC A-52 stream decoder. - * See http://liba52.sourceforge.net/ for updates. - * - * a52dec is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * a52dec 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "config.h" - -#include -#include - -#include "a52.h" -#include "a52_internal.h" - -#define CONVERT(acmod,output) (((output) << 3) + (acmod)) - -int a52_downmix_init (int input, int flags, sample_t * level, - sample_t clev, sample_t slev) -{ - static uint8_t table[11][8] = { - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO, - A52_STEREO, A52_STEREO, A52_STEREO, A52_STEREO}, - {A52_MONO, A52_MONO, A52_MONO, A52_MONO, - A52_MONO, A52_MONO, A52_MONO, A52_MONO}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO, - A52_STEREO, A52_STEREO, A52_STEREO, A52_STEREO}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F, - A52_STEREO, A52_3F, A52_STEREO, A52_3F}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO, - A52_2F1R, A52_2F1R, A52_2F1R, A52_2F1R}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_STEREO, - A52_2F1R, A52_3F1R, A52_2F1R, A52_3F1R}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F, - A52_2F2R, A52_2F2R, A52_2F2R, A52_2F2R}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_3F, - A52_2F2R, A52_3F2R, A52_2F2R, A52_3F2R}, - {A52_CHANNEL1, A52_MONO, A52_MONO, A52_MONO, - A52_MONO, A52_MONO, A52_MONO, A52_MONO}, - {A52_CHANNEL2, A52_MONO, A52_MONO, A52_MONO, - A52_MONO, A52_MONO, A52_MONO, A52_MONO}, - {A52_CHANNEL, A52_DOLBY, A52_STEREO, A52_DOLBY, - A52_DOLBY, A52_DOLBY, A52_DOLBY, A52_DOLBY} - }; - int output; - - output = flags & A52_CHANNEL_MASK; - if (output > A52_DOLBY) - return -1; - - output = table[output][input & 7]; - - if ((output == A52_STEREO) && - ((input == A52_DOLBY) || ((input == A52_3F) && (clev == LEVEL_3DB)))) - output = A52_DOLBY; - - if (flags & A52_ADJUST_LEVEL) - switch (CONVERT (input & 7, output)) { - - case CONVERT (A52_3F, A52_MONO): - *level *= LEVEL_3DB / (1 + clev); - break; - - case CONVERT (A52_STEREO, A52_MONO): - case CONVERT (A52_2F2R, A52_2F1R): - case CONVERT (A52_3F2R, A52_3F1R): - level_3db: - *level *= LEVEL_3DB; - break; - - case CONVERT (A52_3F2R, A52_2F1R): - if (clev < LEVEL_PLUS3DB - 1) - goto level_3db; - /* break thru */ - case CONVERT (A52_3F, A52_STEREO): - case CONVERT (A52_3F1R, A52_2F1R): - case CONVERT (A52_3F1R, A52_2F2R): - case CONVERT (A52_3F2R, A52_2F2R): - *level /= 1 + clev; - break; - - case CONVERT (A52_2F1R, A52_MONO): - *level *= LEVEL_PLUS3DB / (2 + slev); - break; - - case CONVERT (A52_2F1R, A52_STEREO): - case CONVERT (A52_3F1R, A52_3F): - *level /= 1 + slev * LEVEL_3DB; - break; - - case CONVERT (A52_3F1R, A52_MONO): - *level *= LEVEL_3DB / (1 + clev + 0.5 * slev); - break; - - case CONVERT (A52_3F1R, A52_STEREO): - *level /= 1 + clev + slev * LEVEL_3DB; - break; - - case CONVERT (A52_2F2R, A52_MONO): - *level *= LEVEL_3DB / (1 + slev); - break; - - case CONVERT (A52_2F2R, A52_STEREO): - case CONVERT (A52_3F2R, A52_3F): - *level /= 1 + slev; - break; - - case CONVERT (A52_3F2R, A52_MONO): - *level *= LEVEL_3DB / (1 + clev + slev); - break; - - case CONVERT (A52_3F2R, A52_STEREO): - *level /= 1 + clev + slev; - break; - - case CONVERT (A52_MONO, A52_DOLBY): - *level *= LEVEL_PLUS3DB; - break; - - case CONVERT (A52_3F, A52_DOLBY): - case CONVERT (A52_2F1R, A52_DOLBY): - *level *= 1 / (1 + LEVEL_3DB); - break; - - case CONVERT (A52_3F1R, A52_DOLBY): - case CONVERT (A52_2F2R, A52_DOLBY): - *level *= 1 / (1 + 2 * LEVEL_3DB); - break; - - case CONVERT (A52_3F2R, A52_DOLBY): - *level *= 1 / (1 + 3 * LEVEL_3DB); - break; - } - - return output; -} - -int a52_downmix_coeff (sample_t * coeff, int acmod, int output, sample_t level, - sample_t clev, sample_t slev) -{ - switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) { - - case CONVERT (A52_CHANNEL, A52_CHANNEL): - case CONVERT (A52_MONO, A52_MONO): - case CONVERT (A52_STEREO, A52_STEREO): - case CONVERT (A52_3F, A52_3F): - case CONVERT (A52_2F1R, A52_2F1R): - case CONVERT (A52_3F1R, A52_3F1R): - case CONVERT (A52_2F2R, A52_2F2R): - case CONVERT (A52_3F2R, A52_3F2R): - case CONVERT (A52_STEREO, A52_DOLBY): - coeff[0] = coeff[1] = coeff[2] = coeff[3] = coeff[4] = level; - return 0; - - case CONVERT (A52_CHANNEL, A52_MONO): - coeff[0] = coeff[1] = level * LEVEL_6DB; - return 3; - - case CONVERT (A52_STEREO, A52_MONO): - coeff[0] = coeff[1] = level * LEVEL_3DB; - return 3; - - case CONVERT (A52_3F, A52_MONO): - coeff[0] = coeff[2] = level * LEVEL_3DB; - coeff[1] = level * clev * LEVEL_PLUS3DB; - return 7; - - case CONVERT (A52_2F1R, A52_MONO): - coeff[0] = coeff[1] = level * LEVEL_3DB; - coeff[2] = level * slev * LEVEL_3DB; - return 7; - - case CONVERT (A52_2F2R, A52_MONO): - coeff[0] = coeff[1] = level * LEVEL_3DB; - coeff[2] = coeff[3] = level * slev * LEVEL_3DB; - return 15; - - case CONVERT (A52_3F1R, A52_MONO): - coeff[0] = coeff[2] = level * LEVEL_3DB; - coeff[1] = level * clev * LEVEL_PLUS3DB; - coeff[3] = level * slev * LEVEL_3DB; - return 15; - - case CONVERT (A52_3F2R, A52_MONO): - coeff[0] = coeff[2] = level * LEVEL_3DB; - coeff[1] = level * clev * LEVEL_PLUS3DB; - coeff[3] = coeff[4] = level * slev * LEVEL_3DB; - return 31; - - case CONVERT (A52_MONO, A52_DOLBY): - coeff[0] = level * LEVEL_3DB; - return 0; - - case CONVERT (A52_3F, A52_DOLBY): - clev = LEVEL_3DB; - case CONVERT (A52_3F, A52_STEREO): - case CONVERT (A52_3F1R, A52_2F1R): - case CONVERT (A52_3F2R, A52_2F2R): - coeff[0] = coeff[2] = coeff[3] = coeff[4] = level; - coeff[1] = level * clev; - return 7; - - case CONVERT (A52_2F1R, A52_DOLBY): - slev = 1; - case CONVERT (A52_2F1R, A52_STEREO): - coeff[0] = coeff[1] = level; - coeff[2] = level * slev * LEVEL_3DB; - return 7; - - case CONVERT (A52_3F1R, A52_DOLBY): - clev = LEVEL_3DB; - slev = 1; - case CONVERT (A52_3F1R, A52_STEREO): - coeff[0] = coeff[2] = level; - coeff[1] = level * clev; - coeff[3] = level * slev * LEVEL_3DB; - return 15; - - case CONVERT (A52_2F2R, A52_DOLBY): - slev = LEVEL_3DB; - case CONVERT (A52_2F2R, A52_STEREO): - coeff[0] = coeff[1] = level; - coeff[2] = coeff[3] = level * slev; - return 15; - - case CONVERT (A52_3F2R, A52_DOLBY): - clev = LEVEL_3DB; - case CONVERT (A52_3F2R, A52_2F1R): - slev = LEVEL_3DB; - case CONVERT (A52_3F2R, A52_STEREO): - coeff[0] = coeff[2] = level; - coeff[1] = level * clev; - coeff[3] = coeff[4] = level * slev; - return 31; - - case CONVERT (A52_3F1R, A52_3F): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = level * slev * LEVEL_3DB; - return 13; - - case CONVERT (A52_3F2R, A52_3F): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = coeff[4] = level * slev; - return 29; - - case CONVERT (A52_2F2R, A52_2F1R): - coeff[0] = coeff[1] = level; - coeff[2] = coeff[3] = level * LEVEL_3DB; - return 12; - - case CONVERT (A52_3F2R, A52_3F1R): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = coeff[4] = level * LEVEL_3DB; - return 24; - - case CONVERT (A52_2F1R, A52_2F2R): - coeff[0] = coeff[1] = level; - coeff[2] = level * LEVEL_3DB; - return 0; - - case CONVERT (A52_3F1R, A52_2F2R): - coeff[0] = coeff[2] = level; - coeff[1] = level * clev; - coeff[3] = level * LEVEL_3DB; - return 7; - - case CONVERT (A52_3F1R, A52_3F2R): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = level * LEVEL_3DB; - return 0; - - case CONVERT (A52_CHANNEL, A52_CHANNEL1): - coeff[0] = level; - coeff[1] = 0; - return 0; - - case CONVERT (A52_CHANNEL, A52_CHANNEL2): - coeff[0] = 0; - coeff[1] = level; - return 0; - } - - return -1; /* NOTREACHED */ -} - -static void mix2to1 (sample_t * dest, sample_t * src, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - dest[i] += src[i] + bias; -} - -static void mix3to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += samples[i + 256] + samples[i + 512] + bias; -} - -static void mix4to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += (samples[i + 256] + samples[i + 512] + - samples[i + 768] + bias); -} - -static void mix5to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += (samples[i + 256] + samples[i + 512] + - samples[i + 768] + samples[i + 1024] + bias); -} - -static void mix3to2 (sample_t * samples, sample_t bias) -{ - int i; - sample_t common; - - for (i = 0; i < 256; i++) { - common = samples[i + 256] + bias; - samples[i] += common; - samples[i + 256] = samples[i + 512] + common; - } -} - -static void mix21to2 (sample_t * left, sample_t * right, sample_t bias) -{ - int i; - sample_t common; - - for (i = 0; i < 256; i++) { - common = right[i + 256] + bias; - left[i] += common; - right[i] += common; - } -} - -static void mix21toS (sample_t * samples, sample_t bias) -{ - int i; - sample_t surround; - - for (i = 0; i < 256; i++) { - surround = samples[i + 512]; - samples[i] += bias - surround; - samples[i + 256] += bias + surround; - } -} - -static void mix31to2 (sample_t * samples, sample_t bias) -{ - int i; - sample_t common; - - for (i = 0; i < 256; i++) { - common = samples[i + 256] + samples[i + 768] + bias; - samples[i] += common; - samples[i + 256] = samples[i + 512] + common; - } -} - -static void mix31toS (sample_t * samples, sample_t bias) -{ - int i; - sample_t common, surround; - - for (i = 0; i < 256; i++) { - common = samples[i + 256] + bias; - surround = samples[i + 768]; - samples[i] += common - surround; - samples[i + 256] = samples[i + 512] + common + surround; - } -} - -static void mix22toS (sample_t * samples, sample_t bias) -{ - int i; - sample_t surround; - - for (i = 0; i < 256; i++) { - surround = samples[i + 512] + samples[i + 768]; - samples[i] += bias - surround; - samples[i + 256] += bias + surround; - } -} - -static void mix32to2 (sample_t * samples, sample_t bias) -{ - int i; - sample_t common; - - for (i = 0; i < 256; i++) { - common = samples[i + 256] + bias; - samples[i] += common + samples[i + 768]; - samples[i + 256] = common + samples[i + 512] + samples[i + 1024]; - } -} - -static void mix32toS (sample_t * samples, sample_t bias) -{ - int i; - sample_t common, surround; - - for (i = 0; i < 256; i++) { - common = samples[i + 256] + bias; - surround = samples[i + 768] + samples[i + 1024]; - samples[i] += common - surround; - samples[i + 256] = samples[i + 512] + common + surround; - } -} - -static void move2to1 (sample_t * src, sample_t * dest, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - dest[i] = src[i] + src[i + 256] + bias; -} - -static void zero (sample_t * samples) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] = 0; -} - -void a52_downmix (sample_t * samples, int acmod, int output, sample_t bias, - sample_t clev, sample_t slev) -{ - switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) { - - case CONVERT (A52_CHANNEL, A52_CHANNEL2): - memcpy (samples, samples + 256, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_CHANNEL, A52_MONO): - case CONVERT (A52_STEREO, A52_MONO): - mix_2to1: - mix2to1 (samples, samples + 256, bias); - break; - - case CONVERT (A52_2F1R, A52_MONO): - if (slev == 0) - goto mix_2to1; - case CONVERT (A52_3F, A52_MONO): - mix_3to1: - mix3to1 (samples, bias); - break; - - case CONVERT (A52_3F1R, A52_MONO): - if (slev == 0) - goto mix_3to1; - case CONVERT (A52_2F2R, A52_MONO): - if (slev == 0) - goto mix_2to1; - mix4to1 (samples, bias); - break; - - case CONVERT (A52_3F2R, A52_MONO): - if (slev == 0) - goto mix_3to1; - mix5to1 (samples, bias); - break; - - case CONVERT (A52_MONO, A52_DOLBY): - memcpy (samples + 256, samples, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_3F, A52_STEREO): - case CONVERT (A52_3F, A52_DOLBY): - mix_3to2: - mix3to2 (samples, bias); - break; - - case CONVERT (A52_2F1R, A52_STEREO): - if (slev == 0) - break; - mix21to2 (samples, samples + 256, bias); - break; - - case CONVERT (A52_2F1R, A52_DOLBY): - mix21toS (samples, bias); - break; - - case CONVERT (A52_3F1R, A52_STEREO): - if (slev == 0) - goto mix_3to2; - mix31to2 (samples, bias); - break; - - case CONVERT (A52_3F1R, A52_DOLBY): - mix31toS (samples, bias); - break; - - case CONVERT (A52_2F2R, A52_STEREO): - if (slev == 0) - break; - mix2to1 (samples, samples + 512, bias); - mix2to1 (samples + 256, samples + 768, bias); - break; - - case CONVERT (A52_2F2R, A52_DOLBY): - mix22toS (samples, bias); - break; - - case CONVERT (A52_3F2R, A52_STEREO): - if (slev == 0) - goto mix_3to2; - mix32to2 (samples, bias); - break; - - case CONVERT (A52_3F2R, A52_DOLBY): - mix32toS (samples, bias); - break; - - case CONVERT (A52_3F1R, A52_3F): - if (slev == 0) - break; - mix21to2 (samples, samples + 512, bias); - break; - - case CONVERT (A52_3F2R, A52_3F): - if (slev == 0) - break; - mix2to1 (samples, samples + 768, bias); - mix2to1 (samples + 512, samples + 1024, bias); - break; - - case CONVERT (A52_3F1R, A52_2F1R): - mix3to2 (samples, bias); - memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_2F2R, A52_2F1R): - mix2to1 (samples + 512, samples + 768, bias); - break; - - case CONVERT (A52_3F2R, A52_2F1R): - mix3to2 (samples, bias); - move2to1 (samples + 768, samples + 512, bias); - break; - - case CONVERT (A52_3F2R, A52_3F1R): - mix2to1 (samples + 768, samples + 1024, bias); - break; - - case CONVERT (A52_2F1R, A52_2F2R): - memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_3F1R, A52_2F2R): - mix3to2 (samples, bias); - memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_3F2R, A52_2F2R): - mix3to2 (samples, bias); - memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t)); - memcpy (samples + 768, samples + 1024, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_3F1R, A52_3F2R): - memcpy (samples + 1027, samples + 768, 256 * sizeof (sample_t)); - break; - } -} - -void a52_upmix (sample_t * samples, int acmod, int output) -{ - switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) { - - case CONVERT (A52_CHANNEL, A52_CHANNEL2): - memcpy (samples + 256, samples, 256 * sizeof (sample_t)); - break; - - case CONVERT (A52_3F2R, A52_MONO): - zero (samples + 1024); - case CONVERT (A52_3F1R, A52_MONO): - case CONVERT (A52_2F2R, A52_MONO): - zero (samples + 768); - case CONVERT (A52_3F, A52_MONO): - case CONVERT (A52_2F1R, A52_MONO): - zero (samples + 512); - case CONVERT (A52_CHANNEL, A52_MONO): - case CONVERT (A52_STEREO, A52_MONO): - zero (samples + 256); - break; - - case CONVERT (A52_3F2R, A52_STEREO): - case CONVERT (A52_3F2R, A52_DOLBY): - zero (samples + 1024); - case CONVERT (A52_3F1R, A52_STEREO): - case CONVERT (A52_3F1R, A52_DOLBY): - zero (samples + 768); - case CONVERT (A52_3F, A52_STEREO): - case CONVERT (A52_3F, A52_DOLBY): - mix_3to2: - memcpy (samples + 512, samples + 256, 256 * sizeof (sample_t)); - zero (samples + 256); - break; - - case CONVERT (A52_2F2R, A52_STEREO): - case CONVERT (A52_2F2R, A52_DOLBY): - zero (samples + 768); - case CONVERT (A52_2F1R, A52_STEREO): - case CONVERT (A52_2F1R, A52_DOLBY): - zero (samples + 512); - break; - - case CONVERT (A52_3F2R, A52_3F): - zero (samples + 1024); - case CONVERT (A52_3F1R, A52_3F): - case CONVERT (A52_2F2R, A52_2F1R): - zero (samples + 768); - break; - - case CONVERT (A52_3F2R, A52_3F1R): - zero (samples + 1024); - break; - - case CONVERT (A52_3F2R, A52_2F1R): - zero (samples + 1024); - case CONVERT (A52_3F1R, A52_2F1R): - mix_31to21: - memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t)); - goto mix_3to2; - - case CONVERT (A52_3F2R, A52_2F2R): - memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t)); - goto mix_31to21; - } -}