X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=sidebyside;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fliba52%2Fdownmix.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fliba52%2Fdownmix.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=a4ce747ad7544297d94b3bc1a9f63d9a2634869f;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/downmix.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/downmix.c deleted file mode 100644 index a4ce747..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/liba52/downmix.c +++ /dev/null @@ -1,679 +0,0 @@ -/* - * downmix.c - * Copyright (C) 2000-2003 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 "a52.h" -#include "a52_internal.h" - -#define CONVERT(acmod,output) (((output) << 3) + (acmod)) - -int a52_downmix_init (int input, int flags, level_t * level, - level_t clev, level_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 (LEVEL_3DB)))) - output = A52_DOLBY; - - if (flags & A52_ADJUST_LEVEL) { - level_t adjust; - - switch (CONVERT (input & 7, output)) { - - case CONVERT (A52_3F, A52_MONO): - adjust = DIV (LEVEL_3DB, LEVEL (1) + clev); - break; - - case CONVERT (A52_STEREO, A52_MONO): - case CONVERT (A52_2F2R, A52_2F1R): - case CONVERT (A52_3F2R, A52_3F1R): - level_3db: - adjust = LEVEL (LEVEL_3DB); - break; - - case CONVERT (A52_3F2R, A52_2F1R): - if (clev < LEVEL (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): - adjust = DIV (1, LEVEL (1) + clev); - break; - - case CONVERT (A52_2F1R, A52_MONO): - adjust = DIV (LEVEL_PLUS3DB, LEVEL (2) + slev); - break; - - case CONVERT (A52_2F1R, A52_STEREO): - case CONVERT (A52_3F1R, A52_3F): - adjust = DIV (1, LEVEL (1) + MUL_C (slev, LEVEL_3DB)); - break; - - case CONVERT (A52_3F1R, A52_MONO): - adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + MUL_C (slev, 0.5)); - break; - - case CONVERT (A52_3F1R, A52_STEREO): - adjust = DIV (1, LEVEL (1) + clev + MUL_C (slev, LEVEL_3DB)); - break; - - case CONVERT (A52_2F2R, A52_MONO): - adjust = DIV (LEVEL_3DB, LEVEL (1) + slev); - break; - - case CONVERT (A52_2F2R, A52_STEREO): - case CONVERT (A52_3F2R, A52_3F): - adjust = DIV (1, LEVEL (1) + slev); - break; - - case CONVERT (A52_3F2R, A52_MONO): - adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + slev); - break; - - case CONVERT (A52_3F2R, A52_STEREO): - adjust = DIV (1, LEVEL (1) + clev + slev); - break; - - case CONVERT (A52_MONO, A52_DOLBY): - adjust = LEVEL (LEVEL_PLUS3DB); - break; - - case CONVERT (A52_3F, A52_DOLBY): - case CONVERT (A52_2F1R, A52_DOLBY): - adjust = LEVEL (1 / (1 + LEVEL_3DB)); - break; - - case CONVERT (A52_3F1R, A52_DOLBY): - case CONVERT (A52_2F2R, A52_DOLBY): - adjust = LEVEL (1 / (1 + 2 * LEVEL_3DB)); - break; - - case CONVERT (A52_3F2R, A52_DOLBY): - adjust = LEVEL (1 / (1 + 3 * LEVEL_3DB)); - break; - - default: - return output; - } - - *level = MUL_L (*level, adjust); - } - - return output; -} - -int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level, - level_t clev, level_t slev) -{ - level_t level_3db; - - level_3db = MUL_C (level, LEVEL_3DB); - - 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] = MUL_C (level, LEVEL_6DB); - return 3; - - case CONVERT (A52_STEREO, A52_MONO): - coeff[0] = coeff[1] = level_3db; - return 3; - - case CONVERT (A52_3F, A52_MONO): - coeff[0] = coeff[2] = level_3db; - coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB); - return 7; - - case CONVERT (A52_2F1R, A52_MONO): - coeff[0] = coeff[1] = level_3db; - coeff[2] = MUL_L (level_3db, slev); - return 7; - - case CONVERT (A52_2F2R, A52_MONO): - coeff[0] = coeff[1] = level_3db; - coeff[2] = coeff[3] = MUL_L (level_3db, slev); - return 15; - - case CONVERT (A52_3F1R, A52_MONO): - coeff[0] = coeff[2] = level_3db; - coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB); - coeff[3] = MUL_L (level_3db, slev); - return 15; - - case CONVERT (A52_3F2R, A52_MONO): - coeff[0] = coeff[2] = level_3db; - coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB); - coeff[3] = coeff[4] = MUL_L (level_3db, slev); - return 31; - - case CONVERT (A52_MONO, A52_DOLBY): - coeff[0] = level_3db; - return 0; - - case CONVERT (A52_3F, A52_DOLBY): - coeff[0] = coeff[2] = coeff[3] = coeff[4] = level; - coeff[1] = level_3db; - return 7; - - 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] = MUL_L (level, clev); - return 7; - - case CONVERT (A52_2F1R, A52_DOLBY): - coeff[0] = coeff[1] = level; - coeff[2] = level_3db; - return 7; - - case CONVERT (A52_2F1R, A52_STEREO): - coeff[0] = coeff[1] = level; - coeff[2] = MUL_L (level_3db, slev); - return 7; - - case CONVERT (A52_3F1R, A52_DOLBY): - coeff[0] = coeff[2] = level; - coeff[1] = coeff[3] = level_3db; - return 15; - - case CONVERT (A52_3F1R, A52_STEREO): - coeff[0] = coeff[2] = level; - coeff[1] = MUL_L (level, clev); - coeff[3] = MUL_L (level_3db, slev); - return 15; - - case CONVERT (A52_2F2R, A52_DOLBY): - coeff[0] = coeff[1] = level; - coeff[2] = coeff[3] = level_3db; - return 15; - - case CONVERT (A52_2F2R, A52_STEREO): - coeff[0] = coeff[1] = level; - coeff[2] = coeff[3] = MUL_L (level, slev); - return 15; - - case CONVERT (A52_3F2R, A52_DOLBY): - coeff[0] = coeff[2] = level; - coeff[1] = coeff[3] = coeff[4] = level_3db; - return 31; - - case CONVERT (A52_3F2R, A52_2F1R): - coeff[0] = coeff[2] = level; - coeff[1] = MUL_L (level, clev); - coeff[3] = coeff[4] = level_3db; - return 31; - - case CONVERT (A52_3F2R, A52_STEREO): - coeff[0] = coeff[2] = level; - coeff[1] = MUL_L (level, clev); - coeff[3] = coeff[4] = MUL_L (level, slev); - return 31; - - case CONVERT (A52_3F1R, A52_3F): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = MUL_L (level_3db, slev); - return 13; - - case CONVERT (A52_3F2R, A52_3F): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = coeff[4] = MUL_L (level, slev); - return 29; - - case CONVERT (A52_2F2R, A52_2F1R): - coeff[0] = coeff[1] = level; - coeff[2] = coeff[3] = level_3db; - return 12; - - case CONVERT (A52_3F2R, A52_3F1R): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = coeff[4] = level_3db; - return 24; - - case CONVERT (A52_2F1R, A52_2F2R): - coeff[0] = coeff[1] = level; - coeff[2] = level_3db; - return 0; - - case CONVERT (A52_3F1R, A52_2F2R): - coeff[0] = coeff[2] = level; - coeff[1] = MUL_L (level, clev); - coeff[3] = level_3db; - return 7; - - case CONVERT (A52_3F1R, A52_3F2R): - coeff[0] = coeff[1] = coeff[2] = level; - coeff[3] = 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] += BIAS (src[i]); -} - -static void mix3to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += BIAS (samples[i + 256] + samples[i + 512]); -} - -static void mix4to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += BIAS (samples[i + 256] + samples[i + 512] + - samples[i + 768]); -} - -static void mix5to1 (sample_t * samples, sample_t bias) -{ - int i; - - for (i = 0; i < 256; i++) - samples[i] += BIAS (samples[i + 256] + samples[i + 512] + - samples[i + 768] + samples[i + 1024]); -} - -static void mix3to2 (sample_t * samples, sample_t bias) -{ - int i; - sample_t common; - - for (i = 0; i < 256; i++) { - common = BIAS (samples[i + 256]); - 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 = BIAS (right[i + 256]); - 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 = BIAS (samples[i + 256] + samples[i + 768]); - 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 = BIAS (samples[i + 256]); - 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 = BIAS (samples[i + 256]); - 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 = BIAS (samples[i + 256]); - 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] = BIAS (src[i] + src[i + 256]); -} - -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, - level_t clev, level_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 + 1024, 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; - } -}