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-rw-r--r--src/libac3/Makefile.am52
-rw-r--r--src/libac3/ac3.h109
-rw-r--r--src/libac3/ac3_internal.h52
-rw-r--r--src/libac3/bit_allocate.c261
-rw-r--r--src/libac3/bitstream.c87
-rw-r--r--src/libac3/bitstream.h68
-rw-r--r--src/libac3/downmix.c546
-rw-r--r--src/libac3/imdct.c403
-rw-r--r--src/libac3/imdct_mlib.c142
-rw-r--r--src/libac3/parse.c689
-rw-r--r--src/libac3/tables.h247
-rw-r--r--src/libac3/xine_decoder.c474
12 files changed, 0 insertions, 3130 deletions
diff --git a/src/libac3/Makefile.am b/src/libac3/Makefile.am
deleted file mode 100644
index 38b5f5b39..000000000
--- a/src/libac3/Makefile.am
+++ /dev/null
@@ -1,52 +0,0 @@
-CFLAGS = @GLOBAL_CFLAGS@
-
-LIBTOOL = $(SHELL) $(top_builddir)/libtool-nofpic
-
-libdir = $(XINE_PLUGINDIR)
-
-lib_LTLIBRARIES = xineplug_decode_ac3.la
-
-xineplug_decode_ac3_la_SOURCES = bitstream.c bit_allocate.c \
- parse.c downmix.c imdct.c imdct_mlib.c \
- xine_decoder.c
-xineplug_decode_ac3_la_LDFLAGS = -avoid-version -module
-
-noinst_HEADERS = ac3.h ac3_internal.h \
- bitstream.h tables.h
-
-##
-## Install header files (default=$includedir/xine)
-##
-install-includeHEADERS: $(include_HEADERS)
- @$(NORMAL_INSTALL)
- $(mkinstalldirs) $(DESTDIR)$(includedir)/xine
- @list='$(include_HEADERS)'; for p in $$list; do \
- if test -f "$$p"; then d= ; else d="$(srcdir)/"; fi; \
- echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/xine/$$p"; \
- $(INSTALL_DATA) $$d$$p $(DESTDIR)$(includedir)/xine/$$p; \
- done
-
-
-##
-## Remove them
-##
-uninstall-includeHEADERS:
- @$(NORMAL_UNINSTALL)
- list='$(include_HEADERS)'; for p in $$list; do \
- rm -f $(DESTDIR)$(includedir)/xine/$$p; \
- done
-
-
-debug:
- @$(MAKE) CFLAGS="$(DEBUG_CFLAGS)"
-
-install-debug: debug
- @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
-
-mostlyclean-generic:
- -rm -f *~ \#* .*~ .\#*
-
-maintainer-clean-generic:
- -@echo "This command is intended for maintainers to use;"
- -@echo "it deletes files that may require special tools to rebuild."
- -rm -f Makefile.in
diff --git a/src/libac3/ac3.h b/src/libac3/ac3.h
deleted file mode 100644
index 03b849357..000000000
--- a/src/libac3/ac3.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * ac3.h
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- */
-
-typedef float sample_t;
-
-typedef struct ac3_ba_s {
- uint16_t fsnroffst; // fine SNR offset
- uint16_t fgaincod; // fast gain
- uint16_t deltbae; // delta bit allocation exists
- int8_t deltba[50]; // per-band delta bit allocation
-} ac3_ba_t;
-
-typedef struct ac3_state_s {
- sample_t * delay; // delay samples for imdct
-
- uint8_t fscod; // sample rate
- uint8_t halfrate; // halfrate factor
- uint8_t acmod; // coded channels
- sample_t clev; // centre channel mix level
- sample_t slev; // surround channels mix level
- uint8_t lfeon; // coded lfe channel
-
- int output; // type of output
- sample_t level; // output level
- sample_t bias; // output bias
-
- uint16_t cplinu; // coupling in use
- uint16_t chincpl[5]; // channel coupled
- uint16_t phsflginu; // phase flags in use (stereo only)
- uint16_t cplbndstrc[18]; // coupling band structure
- uint16_t cplstrtmant; // coupling channel start mantissa
- uint16_t cplendmant; // coupling channel end mantissa
- sample_t cplco[5][18]; // coupling coordinates
-
- // derived information
- uint16_t cplstrtbnd; // coupling start band (for bit allocation)
- uint16_t ncplbnd; // number of coupling bands
-
- uint16_t rematflg[4]; // stereo rematrixing
-
- uint16_t endmant[5]; // channel end mantissa
-
- uint8_t cpl_exp[256]; // decoded coupling channel exponents
- uint8_t fbw_exp[5][256]; // decoded channel exponents
- uint8_t lfe_exp[7]; // decoded lfe channel exponents
-
- uint16_t sdcycod; // slow decay
- uint16_t fdcycod; // fast decay
- uint16_t sgaincod; // slow gain
- uint16_t dbpbcod; // dB per bit - encodes the dbknee value
- uint16_t floorcod; // masking floor
-
- uint16_t csnroffst; // coarse SNR offset
- ac3_ba_t cplba; // coupling bit allocation parameters
- ac3_ba_t ba[5]; // channel bit allocation parameters
- ac3_ba_t lfeba; // lfe bit allocation parameters
-
- uint16_t cplfleak; // coupling fast leak init
- uint16_t cplsleak; // coupling slow leak init
-
- // derived bit allocation information
- int8_t fbw_bap[5][256];
- int8_t cpl_bap[256];
- int8_t lfe_bap[7];
-} ac3_state_t;
-
-#define AC3_CHANNEL 0
-#define AC3_MONO 1
-#define AC3_STEREO 2
-#define AC3_3F 3
-#define AC3_2F1R 4
-#define AC3_3F1R 5
-#define AC3_2F2R 6
-#define AC3_3F2R 7
-#define AC3_CHANNEL1 8
-#define AC3_CHANNEL2 9
-#define AC3_DOLBY 10
-#define AC3_CHANNEL_MASK 15
-
-#define AC3_LFE 16
-#define AC3_ADJUST_LEVEL 32
-
-void ac3_init (void);
-int ac3_syncinfo (uint8_t * buf, int * flags,
- int * sample_rate, int * bit_rate);
-int ac3_frame (ac3_state_t * state, uint8_t * buf, int * flags,
- sample_t * level, sample_t bias, sample_t * delay);
-int ac3_block (ac3_state_t * state, sample_t samples[][256]);
diff --git a/src/libac3/ac3_internal.h b/src/libac3/ac3_internal.h
deleted file mode 100644
index 065ccbb36..000000000
--- a/src/libac3/ac3_internal.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * ac3_internal.h
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#define LEVEL_PLUS3DB 1.4142135623730951
-#define LEVEL_3DB 0.7071067811865476
-#define LEVEL_45DB 0.5946035575013605
-#define LEVEL_6DB 0.5
-
-#define EXP_REUSE (0)
-#define EXP_D15 (1)
-#define EXP_D25 (2)
-#define EXP_D45 (3)
-
-#define DELTA_BIT_REUSE (0)
-#define DELTA_BIT_NEW (1)
-#define DELTA_BIT_NONE (2)
-#define DELTA_BIT_RESERVED (3)
-
-void bit_allocate (ac3_state_t * state, ac3_ba_t * ba, int bndstart,
- int start, int end, int fastleak, int slowleak,
- uint8_t * exp, int8_t * bap);
-
-int downmix_init (int input, int flags, sample_t * level,
- sample_t clev, sample_t slev);
-void downmix (sample_t * samples, int acmod, int output,
- sample_t level, sample_t bias, sample_t clev, sample_t slev);
-
-void imdct_init (void);
-extern void (* imdct_256) (sample_t * data, sample_t * delay);
-extern void (* imdct_512) (sample_t * data, sample_t * delay);
-void imdct_do_256_mlib (sample_t * data, sample_t * delay);
-void imdct_do_512_mlib (sample_t * data, sample_t * delay);
diff --git a/src/libac3/bit_allocate.c b/src/libac3/bit_allocate.c
deleted file mode 100644
index 45bc16cef..000000000
--- a/src/libac3/bit_allocate.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * bit_allocate.c
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include "config.h"
-
-#include <inttypes.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-
-static int hthtab[3][50] = {
- {0x730, 0x730, 0x7c0, 0x800, 0x820, 0x840, 0x850, 0x850, 0x860, 0x860,
- 0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x890, 0x890,
- 0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900,
- 0x910, 0x910, 0x910, 0x910, 0x900, 0x8f0, 0x8c0, 0x870, 0x820, 0x7e0,
- 0x7a0, 0x770, 0x760, 0x7a0, 0x7c0, 0x7c0, 0x6e0, 0x400, 0x3c0, 0x3c0},
- {0x710, 0x710, 0x7a0, 0x7f0, 0x820, 0x830, 0x840, 0x850, 0x850, 0x860,
- 0x860, 0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880,
- 0x890, 0x890, 0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8e0, 0x8f0,
- 0x900, 0x910, 0x910, 0x910, 0x910, 0x900, 0x8e0, 0x8b0, 0x870, 0x820,
- 0x7e0, 0x7b0, 0x760, 0x770, 0x7a0, 0x7c0, 0x780, 0x5d0, 0x3c0, 0x3c0},
- {0x680, 0x680, 0x750, 0x7b0, 0x7e0, 0x810, 0x820, 0x830, 0x840, 0x850,
- 0x850, 0x850, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860,
- 0x870, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880, 0x890, 0x8a0, 0x8b0,
- 0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900, 0x910, 0x910, 0x910, 0x900, 0x8f0,
- 0x8d0, 0x8b0, 0x840, 0x7f0, 0x790, 0x760, 0x7a0, 0x7c0, 0x7b0, 0x720}
-};
-
-static int8_t baptab[305] = {
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, // 93 padding entries
-
- 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14,
- 14, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
- 9, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
- 5, 4, 4, -3, -3, 3, 3, 3, -2, -2, -1, -1, -1, -1, -1, 0,
-
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0 // 148 padding entries
-};
-
-static int bndtab[30] = {21, 22, 23, 24, 25, 26, 27, 28, 31, 34,
- 37, 40, 43, 46, 49, 55, 61, 67, 73, 79,
- 85, 97, 109, 121, 133, 157, 181, 205, 229, 253};
-
-static int8_t latab[256] = {
- -64, -63, -62, -61, -60, -59, -58, -57, -56, -55, -54, -53,
- -52, -52, -51, -50, -49, -48, -47, -47, -46, -45, -44, -44,
- -43, -42, -41, -41, -40, -39, -38, -38, -37, -36, -36, -35,
- -35, -34, -33, -33, -32, -32, -31, -30, -30, -29, -29, -28,
- -28, -27, -27, -26, -26, -25, -25, -24, -24, -23, -23, -22,
- -22, -21, -21, -21, -20, -20, -19, -19, -19, -18, -18, -18,
- -17, -17, -17, -16, -16, -16, -15, -15, -15, -14, -14, -14,
- -13, -13, -13, -13, -12, -12, -12, -12, -11, -11, -11, -11,
- -10, -10, -10, -10, -10, -9, -9, -9, -9, -9, -8, -8,
- -8, -8, -8, -8, -7, -7, -7, -7, -7, -7, -6, -6,
- -6, -6, -6, -6, -6, -6, -5, -5, -5, -5, -5, -5,
- -5, -5, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
- -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
-#define UPDATE_LEAK() \
-do { \
- fastleak += fdecay; \
- if (fastleak > psd + fgain) \
- fastleak = psd + fgain; \
- slowleak += sdecay; \
- if (slowleak > psd + sgain) \
- slowleak = psd + sgain; \
-} while (0)
-
-#define COMPUTE_MASK() \
-do { \
- if (psd > dbknee) \
- mask -= (psd - dbknee) >> 2; \
- if (mask > hth [i >> halfrate]) \
- mask = hth [i >> halfrate]; \
- mask -= snroffset + 128 * deltba[i]; \
- mask = (mask > 0) ? 0 : ((-mask) >> 5); \
- mask -= floor; \
-} while (0)
-
-void bit_allocate (ac3_state_t * state, ac3_ba_t * ba, int bndstart,
- int start, int end, int fastleak, int slowleak,
- uint8_t * exp, int8_t * bap)
-{
- static int slowgain[4] = {0x540, 0x4d8, 0x478, 0x410};
- static int dbpbtab[4] = {0xc00, 0x500, 0x300, 0x100};
- static int floortab[8] = {0x910, 0x950, 0x990, 0x9d0,
- 0xa10, 0xa90, 0xb10, 0x1400};
-
- int i, j;
- int fdecay, fgain, sdecay, sgain, dbknee, floor, snroffset;
- int psd, mask;
- int8_t * deltba;
- int * hth;
- int halfrate;
-
- halfrate = state->halfrate;
- fdecay = (63 + 20 * state->fdcycod) >> halfrate;
- fgain = 128 + 128 * ba->fgaincod;
- sdecay = (15 + 2 * state->sdcycod) >> halfrate;
- sgain = slowgain[state->sgaincod];
- dbknee = dbpbtab[state->dbpbcod];
- hth = hthtab[state->fscod];
- /*
- * if there is no delta bit allocation, make deltba point to an area
- * known to contain zeroes. baptab+156 here.
- */
- deltba = (ba->deltbae == DELTA_BIT_NONE) ? baptab + 156 : ba->deltba;
- floor = floortab[state->floorcod];
- snroffset = 960 - 64 * state->csnroffst - 4 * ba->fsnroffst + floor;
- floor >>= 5;
-
- i = bndstart;
- j = start;
- if (start == 0) { // not the coupling channel
- int lowcomp;
-
- lowcomp = 0;
- j = end - 1;
- do {
- if (i < j) {
- if (exp[i+1] == exp[i] - 2)
- lowcomp = 384;
- else if (lowcomp && (exp[i+1] > exp[i]))
- lowcomp -= 64;
- }
- psd = 128 * exp[i];
- mask = psd + fgain + lowcomp;
- COMPUTE_MASK ();
- bap[i] = (baptab+156)[mask + 4 * exp[i]];
- i++;
- } while ((i < 3) || ((i < 7) && (exp[i] > exp[i-1])));
- fastleak = psd + fgain;
- slowleak = psd + sgain;
-
- while (i < 7) {
- if (i < j) {
- if (exp[i+1] == exp[i] - 2)
- lowcomp = 384;
- else if (lowcomp && (exp[i+1] > exp[i]))
- lowcomp -= 64;
- }
- psd = 128 * exp[i];
- UPDATE_LEAK ();
- mask = ((fastleak + lowcomp < slowleak) ?
- fastleak + lowcomp : slowleak);
- COMPUTE_MASK ();
- bap[i] = (baptab+156)[mask + 4 * exp[i]];
- i++;
- }
-
- if (end == 7) // lfe channel
- return;
-
- do {
- if (exp[i+1] == exp[i] - 2)
- lowcomp = 320;
- else if (lowcomp && (exp[i+1] > exp[i]))
- lowcomp -= 64;
- psd = 128 * exp[i];
- UPDATE_LEAK ();
- mask = ((fastleak + lowcomp < slowleak) ?
- fastleak + lowcomp : slowleak);
- COMPUTE_MASK ();
- bap[i] = (baptab+156)[mask + 4 * exp[i]];
- i++;
- } while (i < 20);
-
- while (lowcomp > 128) { // two iterations maximum
- lowcomp -= 128;
- psd = 128 * exp[i];
- UPDATE_LEAK ();
- mask = ((fastleak + lowcomp < slowleak) ?
- fastleak + lowcomp : slowleak);
- COMPUTE_MASK ();
- bap[i] = (baptab+156)[mask + 4 * exp[i]];
- i++;
- }
- j = i;
- }
-
- do {
- int startband, endband;
-
- startband = j;
- endband = ((bndtab-20)[i] < end) ? (bndtab-20)[i] : end;
- psd = 128 * exp[j++];
- while (j < endband) {
- int next, delta;
-
- next = 128 * exp[j++];
- delta = next - psd;
- switch (delta >> 9) {
- case -6: case -5: case -4: case -3: case -2:
- psd = next;
- break;
- case -1:
- psd = next + latab[(-delta) >> 1];
- break;
- case 0:
- psd += latab[delta >> 1];
- break;
- }
- }
- // minpsd = -289
- UPDATE_LEAK ();
- mask = (fastleak < slowleak) ? fastleak : slowleak;
- COMPUTE_MASK ();
- i++;
- j = startband;
- do {
- // max(mask+4*exp)=147=-(minpsd+fgain-deltba-snroffset)>>5+4*exp
- // min(mask+4*exp)=-156=-(sgain-deltba-snroffset)>>5
- bap[j] = (baptab+156)[mask + 4 * exp[j]];
- j++;
- } while (j < endband);
- } while (j < end);
-}
diff --git a/src/libac3/bitstream.c b/src/libac3/bitstream.c
deleted file mode 100644
index 6e2e36497..000000000
--- a/src/libac3/bitstream.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * bitstream.c
- *
- * Copyright (C) Aaron Holtzman - Dec 1999
- *
- * This file is part of ac3dec, a free AC-3 audio decoder
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <inttypes.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-#include "bitstream.h"
-
-#define BUFFER_SIZE 4096
-
-struct uint32_alignment {
- char a;
- uint32_t b;
-};
-#define UINT32_ALIGNMENT offsetof(struct uint32_alignment, b)
-
-
-static uint32_t *buffer_start;
-
-uint32_t bits_left;
-uint32_t current_word;
-
-void bitstream_set_ptr (uint8_t * buf)
-{
- int align = (long)buf & (UINT32_ALIGNMENT-1);
- buffer_start = (uint32_t *) (buf - align);
- bits_left = 0;
- if (align > 0) bitstream_get(align * 8);
-}
-
-static inline void
-bitstream_fill_current()
-{
- uint32_t tmp_word = *buffer_start++;
- current_word = swab32(tmp_word);
-}
-
-//
-// The fast paths for _get is in the
-// bitstream.h header file so it can be inlined.
-//
-// The "bottom half" of this routine is suffixed _bh
-//
-// -ah
-//
-
-uint32_t
-bitstream_get_bh(uint32_t num_bits)
-{
- uint32_t result;
-
- num_bits -= bits_left;
- result = (current_word << (32 - bits_left)) >> (32 - bits_left);
-
- bitstream_fill_current();
-
- if(num_bits != 0)
- result = (result << num_bits) | (current_word >> (32 - num_bits));
-
- bits_left = 32 - num_bits;
-
- return result;
-}
diff --git a/src/libac3/bitstream.h b/src/libac3/bitstream.h
deleted file mode 100644
index 84f3287c8..000000000
--- a/src/libac3/bitstream.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * bitstream.h
- *
- * Copyright (C) Aaron Holtzman - Dec 1999
- *
- * This file is part of ac3dec, a free AC-3 audio decoder
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-//My new and improved vego-matic endian swapping routine
-//(stolen from the kernel)
-#ifdef WORDS_BIGENDIAN
-
-# define swab32(x) (x)
-
-#else
-
-# if defined (__i386__)
-
-# define swab32(x) __i386_swab32(x)
- static inline const uint32_t __i386_swab32(uint32_t x)
- {
- __asm__("bswap %0" : "=r" (x) : "0" (x));
- return x;
- }
-
-# else
-
-# define swab32(x)\
-((((uint8_t*)&x)[0] << 24) | (((uint8_t*)&x)[1] << 16) | \
- (((uint8_t*)&x)[2] << 8) | (((uint8_t*)&x)[3]))
-
-# endif
-#endif
-
-extern uint32_t bits_left;
-extern uint32_t current_word;
-
-void bitstream_set_ptr (uint8_t * buf);
-uint32_t bitstream_get_bh(uint32_t num_bits);
-
-static inline uint32_t
-bitstream_get(uint32_t num_bits)
-{
- uint32_t result;
-
- if(num_bits < bits_left) {
- result = (current_word << (32 - bits_left)) >> (32 - num_bits);
- bits_left -= num_bits;
- return result;
- }
-
- return bitstream_get_bh(num_bits);
-}
diff --git a/src/libac3/downmix.c b/src/libac3/downmix.c
deleted file mode 100644
index 498471798..000000000
--- a/src/libac3/downmix.c
+++ /dev/null
@@ -1,546 +0,0 @@
-/*
- *
- * downmix.c
- *
- * Copyright (C) Aaron Holtzman - Sept 1999
- *
- * Originally based on code by Yuqing Deng.
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- */
-
-#include "config.h"
-
-#include <inttypes.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-
-
-#define CONVERT(acmod,output) (((output) << 3) + (acmod))
-
-int downmix_init (int input, int flags, sample_t * level,
- sample_t clev, sample_t slev)
-{
- static uint8_t table[11][8] = {
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_STEREO,
- AC3_STEREO, AC3_STEREO, AC3_STEREO, AC3_STEREO},
- {AC3_MONO, AC3_MONO, AC3_MONO, AC3_MONO,
- AC3_MONO, AC3_MONO, AC3_MONO, AC3_MONO},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_STEREO,
- AC3_STEREO, AC3_STEREO, AC3_STEREO, AC3_STEREO},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_3F,
- AC3_STEREO, AC3_3F, AC3_STEREO, AC3_3F},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_STEREO,
- AC3_2F1R, AC3_2F1R, AC3_2F1R, AC3_2F1R},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_STEREO,
- AC3_2F1R, AC3_3F1R, AC3_2F1R, AC3_3F1R},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_3F,
- AC3_2F2R, AC3_2F2R, AC3_2F2R, AC3_2F2R},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_3F,
- AC3_2F2R, AC3_3F2R, AC3_2F2R, AC3_3F2R},
- {AC3_CHANNEL1, AC3_MONO, AC3_MONO, AC3_MONO,
- AC3_MONO, AC3_MONO, AC3_MONO, AC3_MONO},
- {AC3_CHANNEL2, AC3_MONO, AC3_MONO, AC3_MONO,
- AC3_MONO, AC3_MONO, AC3_MONO, AC3_MONO},
- {AC3_CHANNEL, AC3_DOLBY, AC3_STEREO, AC3_DOLBY,
- AC3_DOLBY, AC3_DOLBY, AC3_DOLBY, AC3_DOLBY}
- };
- int output;
-
- output = flags & AC3_CHANNEL_MASK;
- if (output > AC3_DOLBY)
- return -1;
-
- output = table[output][input & 7];
-
- if ((output == AC3_STEREO) &&
- ((input == AC3_DOLBY) || ((input == AC3_3F) && (clev == LEVEL_3DB))))
- output = AC3_DOLBY;
-
- if (flags & AC3_ADJUST_LEVEL)
- switch (CONVERT (input & 7, output)) {
-
- case CONVERT (AC3_3F, AC3_MONO):
- *level *= LEVEL_3DB / (1 + clev);
- break;
-
- case CONVERT (AC3_STEREO, AC3_MONO):
- case CONVERT (AC3_2F2R, AC3_2F1R):
- case CONVERT (AC3_3F2R, AC3_3F1R):
- level_3db:
- *level *= LEVEL_3DB;
- break;
-
- case CONVERT (AC3_3F2R, AC3_2F1R):
- if (clev < LEVEL_PLUS3DB - 1)
- goto level_3db;
- // break thru
- case CONVERT (AC3_3F, AC3_STEREO):
- case CONVERT (AC3_3F1R, AC3_2F1R):
- case CONVERT (AC3_3F1R, AC3_2F2R):
- case CONVERT (AC3_3F2R, AC3_2F2R):
- *level /= 1 + clev;
- break;
-
- case CONVERT (AC3_2F1R, AC3_MONO):
- *level *= LEVEL_PLUS3DB / (2 + slev);
- break;
-
- case CONVERT (AC3_2F1R, AC3_STEREO):
- case CONVERT (AC3_3F1R, AC3_3F):
- *level /= 1 + slev * LEVEL_3DB;
- break;
-
- case CONVERT (AC3_3F1R, AC3_MONO):
- *level *= LEVEL_3DB / (1 + clev + 0.5 * slev);
- break;
-
- case CONVERT (AC3_3F1R, AC3_STEREO):
- *level /= 1 + clev + slev * LEVEL_3DB;
- break;
-
- case CONVERT (AC3_2F2R, AC3_MONO):
- *level *= LEVEL_3DB / (1 + slev);
- break;
-
- case CONVERT (AC3_2F2R, AC3_STEREO):
- case CONVERT (AC3_3F2R, AC3_3F):
- *level /= (1 + slev);
- break;
-
- case CONVERT (AC3_3F2R, AC3_MONO):
- *level *= LEVEL_3DB / (1 + clev + slev);
- break;
-
- case CONVERT (AC3_3F2R, AC3_STEREO):
- *level /= 1 + clev + slev;
- break;
-
- case CONVERT (AC3_MONO, AC3_DOLBY):
- *level *= LEVEL_PLUS3DB;
- break;
-
- case CONVERT (AC3_3F, AC3_DOLBY):
- case CONVERT (AC3_2F1R, AC3_DOLBY):
- *level *= 1 / (1 + LEVEL_3DB);
- break;
-
- case CONVERT (AC3_3F1R, AC3_DOLBY):
- case CONVERT (AC3_2F2R, AC3_DOLBY):
- *level *= 1 / (1 + 2 * LEVEL_3DB);
- break;
-
- case CONVERT (AC3_3F2R, AC3_DOLBY):
- *level *= 1 / (1 + 3 * LEVEL_3DB);
- break;
- }
-
- return output;
-}
-
-static void mix1to1 (sample_t * samples, sample_t level, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = samples[i] * level + bias;
-}
-
-static void move1to1 (sample_t * src, sample_t * dest,
- sample_t level, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- dest[i] = src[i] * level + bias;
-}
-
-static void mix2to1 (sample_t * samples, sample_t level, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = (samples[i] + samples[i + 256]) * level + bias;
-}
-
-static void move2to1 (sample_t * src, sample_t * dest,
- sample_t level, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- dest[i] = (src[i] + src[i + 256]) * level + bias;
-}
-
-static void mix3to1 (sample_t * samples, sample_t level, sample_t clev,
- sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = ((samples[i] + samples[i + 512]) * level +
- samples[i + 256] * clev + bias);
-}
-
-static void mix21to1 (sample_t * samples, sample_t level, sample_t slev,
- sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = ((samples[i] + samples[i + 256]) * level +
- samples[i + 512] * slev + bias);
-}
-
-static void mix31to1 (sample_t * samples, sample_t level,
- sample_t clev, sample_t slev, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = ((samples[i] + samples[i + 512]) * level +
- samples[i + 256] * clev + samples[i + 768] * slev +
- bias);
-}
-
-static void mix22to1 (sample_t * samples, sample_t level, sample_t slev,
- sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = ((samples[i] + samples[i + 256]) * level +
- (samples[i + 512] + samples[i + 768]) * slev + bias);
-}
-
-static void mix32to1 (sample_t * samples, sample_t level,
- sample_t clev, sample_t slev, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- samples[i] = ((samples[i] + samples[i + 512]) * level +
- samples[i + 256] * clev +
- (samples[i + 768] + samples[i + 1024]) * slev + bias);
-}
-
-static void mix1to2 (sample_t * src, sample_t * dest,
- sample_t level, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- dest[i] = src[i] = src[i] * level + bias;
-}
-
-static void mix3to2 (sample_t * samples, sample_t level, sample_t clev,
- sample_t bias)
-{
- int i;
- sample_t common;
-
- for (i = 0; i < 256; i++) {
- common = samples[i + 256] * clev + bias;
- samples[i] = samples[i] * level + common;
- samples[i + 256] = samples[i + 512] * level + common;
- }
-}
-
-static void mix21to2 (sample_t * left, sample_t * right,
- sample_t level, sample_t slev, sample_t bias)
-{
- int i;
- sample_t common;
-
- for (i = 0; i < 256; i++) {
- common = right[i + 256] * slev + bias;
- left[i] = left[i] * level + common;
- right[i] = right[i] * level + common;
- }
-}
-
-static void mix11to1 (sample_t * front, sample_t * rear,
- sample_t level, sample_t slev, sample_t bias)
-{
- int i;
-
- for (i = 0; i < 256; i++)
- front[i] = front[i] * level + rear[i] * slev + bias;
-}
-
-static void mix31to2 (sample_t * samples, sample_t level,
- sample_t clev, sample_t slev, sample_t bias)
-{
- int i;
- sample_t common;
-
- for (i = 0; i < 256; i++) {
- common = samples[i + 256] * clev + samples[i + 768] * slev + bias;
- samples[i] = samples[i] * level + common;
- samples[i + 256] = samples[i + 512] * level + common;
- }
-}
-
-static void mix32to2 (sample_t * samples, sample_t level,
- sample_t clev, sample_t slev, sample_t bias)
-{
- int i;
- sample_t common;
-
- for (i = 0; i < 256; i++) {
- common = samples[i + 256] * clev + bias;
- samples[i] = samples[i] * level + common + samples[i + 768] * slev;
- samples[i + 256] = (samples[i + 512] * level + common +
- samples[i + 1024] * slev);
- }
-}
-
-static void mix21toS (sample_t * samples,
- sample_t level, sample_t level3db, sample_t bias)
-{
- int i;
- sample_t surround;
-
- for (i = 0; i < 256; i++) {
- surround = samples[i + 512] * level3db;
- samples[i] = samples[i] * level - surround + bias;
- samples[i + 256] = samples[i + 256] * level + surround + bias;
- }
-}
-
-static void mix22toS (sample_t * samples,
- sample_t level, sample_t level3db, sample_t bias)
-{
- int i;
- sample_t surround;
-
- for (i = 0; i < 256; i++) {
- surround = (samples[i + 512] + samples[i + 768]) * level3db;
- samples[i] = samples[i] * level - surround + bias;
- samples[i + 256] = samples[i + 256] * level + surround + bias;
- }
-}
-
-static void mix31toS (sample_t * samples,
- sample_t level, sample_t level3db, sample_t bias)
-{
- int i;
- sample_t common, surround;
-
- for (i = 0; i < 256; i++) {
- common = samples[i + 256] * level3db + bias;
- surround = samples[i + 768] * level3db;
- samples[i] = samples[i] * level + common - surround;
- samples[i + 256] = samples[i + 512] * level + common + surround;
- }
-}
-
-static void mix32toS (sample_t * samples,
- sample_t level, sample_t level3db, sample_t bias)
-{
- int i;
- sample_t common, surround;
-
- for (i = 0; i < 256; i++) {
- common = samples[i + 256] * level3db + bias;
- surround = (samples[i + 768] + samples[i + 1024]) * level3db;
- samples[i] = samples[i] * level + common - surround;
- samples[i + 256] = samples[i + 512] * level + common + surround;
- }
-}
-
-void downmix (sample_t * samples, int acmod, int output,
- sample_t level, sample_t bias, sample_t clev, sample_t slev)
-{
- switch (CONVERT (acmod, output & AC3_CHANNEL_MASK)) {
-
- case CONVERT (AC3_3F2R, AC3_3F2R):
- mix1to1 (samples + 1024, level, bias);
- case CONVERT (AC3_3F1R, AC3_3F1R):
- case CONVERT (AC3_2F2R, AC3_2F2R):
- mix1to1 (samples + 768, level, bias);
- case CONVERT (AC3_3F, AC3_3F):
- case CONVERT (AC3_2F1R, AC3_2F1R):
- mix_3to3:
- mix1to1 (samples + 512, level, bias);
- case CONVERT (AC3_CHANNEL, AC3_CHANNEL):
- case CONVERT (AC3_STEREO, AC3_STEREO):
- case CONVERT (AC3_STEREO, AC3_DOLBY):
- mix_2to2:
- mix1to1 (samples + 256, level, bias);
- case CONVERT (AC3_CHANNEL, AC3_CHANNEL1):
- case CONVERT (AC3_MONO, AC3_MONO):
- mix1to1 (samples, level, bias);
- break;
-
- case CONVERT (AC3_CHANNEL, AC3_CHANNEL2):
- move1to1 (samples + 256, samples, level, bias);
- break;
-
- case CONVERT (AC3_STEREO, AC3_MONO):
- mix_2to1:
- mix2to1 (samples, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_2F1R, AC3_MONO):
- if (slev == 0)
- goto mix_2to1;
- mix21to1 (samples, level * LEVEL_3DB, level * slev * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_2F2R, AC3_MONO):
- if (slev == 0)
- goto mix_2to1;
- mix22to1 (samples, level * LEVEL_3DB, level * slev * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F, AC3_MONO):
- mix_3to1:
- mix3to1 (samples, level * LEVEL_3DB, level * clev * LEVEL_PLUS3DB,
- bias);
- break;
-
- case CONVERT (AC3_3F1R, AC3_MONO):
- if (slev == 0)
- goto mix_3to1;
- mix31to1 (samples, level * LEVEL_3DB, level * clev * LEVEL_PLUS3DB,
- level * slev * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F2R, AC3_MONO):
- if (slev == 0)
- goto mix_3to1;
- mix32to1 (samples, level * LEVEL_3DB, level * clev * LEVEL_PLUS3DB,
- level * slev * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_CHANNEL, AC3_MONO):
- mix2to1 (samples, level * LEVEL_6DB, bias);
- break;
-
- case CONVERT (AC3_MONO, AC3_DOLBY):
- mix1to2 (samples, samples + 256, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F, AC3_DOLBY):
- clev = LEVEL_3DB;
- case CONVERT (AC3_3F, AC3_STEREO):
- mix_3to2:
- mix3to2 (samples, level, level * clev, bias);
- break;
-
- case CONVERT (AC3_2F1R, AC3_DOLBY):
- mix21toS (samples, level, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F1R, AC3_DOLBY):
- mix31toS (samples, level, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_2F2R, AC3_DOLBY):
- mix22toS (samples, level, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F2R, AC3_DOLBY):
- mix32toS (samples, level, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_2F1R, AC3_STEREO):
- if (slev == 0)
- goto mix_2to2;
- mix21to2 (samples, samples + 256, level, level * slev * LEVEL_3DB,
- bias);
- break;
-
- case CONVERT (AC3_3F1R, AC3_STEREO):
- if (slev == 0)
- goto mix_3to2;
- mix31to2 (samples, level, level * clev, level * slev * LEVEL_3DB,
- bias);
- break;
-
- case CONVERT (AC3_2F2R, AC3_STEREO):
- if (slev == 0)
- goto mix_2to2;
- mix11to1 (samples, samples + 512, level, level * slev, bias);
- mix11to1 (samples + 256, samples + 768, level, level * slev, bias);
- break;
-
- case CONVERT (AC3_3F2R, AC3_STEREO):
- if (slev == 0)
- goto mix_3to2;
- mix32to2 (samples, level, level * clev, level * slev, bias);
- break;
-
- case CONVERT (AC3_3F1R, AC3_3F):
- if (slev == 0)
- goto mix_3to3;
- mix21to2 (samples, samples + 512, level, level * slev * LEVEL_3DB,
- bias);
-
- case CONVERT (AC3_3F2R, AC3_3F):
- if (slev == 0)
- goto mix_3to3;
- mix11to1 (samples, samples + 768, level, level * slev, bias);
- mix11to1 (samples + 512, samples + 1024, level, level * slev, bias);
- mix1to1 (samples + 256, level, bias);
- break;
-
- case CONVERT (AC3_2F1R, AC3_2F2R):
- mix1to2 (samples + 512, samples + 768, level * LEVEL_3DB, bias);
- goto mix_2to2;
-
- case CONVERT (AC3_3F1R, AC3_3F2R):
- mix1to2 (samples + 768, samples + 1024, level * LEVEL_3DB, bias);
- goto mix_3to3;
-
- case CONVERT (AC3_2F2R, AC3_2F1R):
- mix2to1 (samples + 512, level * LEVEL_3DB, bias);
- goto mix_2to2;
-
- case CONVERT (AC3_3F2R, AC3_3F1R):
- mix2to1 (samples + 768, level * LEVEL_3DB, bias);
- goto mix_3to3;
-
- case CONVERT (AC3_3F1R, AC3_2F2R):
- mix3to2 (samples, level, level * clev, bias);
- mix1to2 (samples + 768, samples + 512, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F1R, AC3_2F1R):
- mix3to2 (samples, level, level * clev, bias);
- move1to1 (samples + 768, samples + 512, level, bias);
- break;
-
- case CONVERT (AC3_3F2R, AC3_2F1R):
- mix3to2 (samples, level, level * clev, bias);
- move2to1 (samples + 768, samples + 512, level * LEVEL_3DB, bias);
- break;
-
- case CONVERT (AC3_3F2R, AC3_2F2R):
- mix3to2 (samples, level, level * clev, bias);
- move1to1 (samples + 768, samples + 512, level, bias);
- move1to1 (samples + 1024, samples + 768, level, bias);
- break;
- }
-
- if (output & AC3_LFE)
- mix1to1 (samples - 256, level, bias);
-}
diff --git a/src/libac3/imdct.c b/src/libac3/imdct.c
deleted file mode 100644
index 7cc221c89..000000000
--- a/src/libac3/imdct.c
+++ /dev/null
@@ -1,403 +0,0 @@
-/*
- * imdct.c
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- */
-
-#include "config.h"
-
-#include <inttypes.h>
-#include <math.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-
-void (* imdct_256) (sample_t data[], sample_t delay[]);
-void (* imdct_512) (sample_t data[], sample_t delay[]);
-
-typedef struct complex_s {
- sample_t real;
- sample_t imag;
-} complex_t;
-
-
-/* 128 point bit-reverse LUT */
-static uint8_t bit_reverse_512[] = {
- 0x00, 0x40, 0x20, 0x60, 0x10, 0x50, 0x30, 0x70,
- 0x08, 0x48, 0x28, 0x68, 0x18, 0x58, 0x38, 0x78,
- 0x04, 0x44, 0x24, 0x64, 0x14, 0x54, 0x34, 0x74,
- 0x0c, 0x4c, 0x2c, 0x6c, 0x1c, 0x5c, 0x3c, 0x7c,
- 0x02, 0x42, 0x22, 0x62, 0x12, 0x52, 0x32, 0x72,
- 0x0a, 0x4a, 0x2a, 0x6a, 0x1a, 0x5a, 0x3a, 0x7a,
- 0x06, 0x46, 0x26, 0x66, 0x16, 0x56, 0x36, 0x76,
- 0x0e, 0x4e, 0x2e, 0x6e, 0x1e, 0x5e, 0x3e, 0x7e,
- 0x01, 0x41, 0x21, 0x61, 0x11, 0x51, 0x31, 0x71,
- 0x09, 0x49, 0x29, 0x69, 0x19, 0x59, 0x39, 0x79,
- 0x05, 0x45, 0x25, 0x65, 0x15, 0x55, 0x35, 0x75,
- 0x0d, 0x4d, 0x2d, 0x6d, 0x1d, 0x5d, 0x3d, 0x7d,
- 0x03, 0x43, 0x23, 0x63, 0x13, 0x53, 0x33, 0x73,
- 0x0b, 0x4b, 0x2b, 0x6b, 0x1b, 0x5b, 0x3b, 0x7b,
- 0x07, 0x47, 0x27, 0x67, 0x17, 0x57, 0x37, 0x77,
- 0x0f, 0x4f, 0x2f, 0x6f, 0x1f, 0x5f, 0x3f, 0x7f};
-
-static uint8_t bit_reverse_256[] = {
- 0x00, 0x20, 0x10, 0x30, 0x08, 0x28, 0x18, 0x38,
- 0x04, 0x24, 0x14, 0x34, 0x0c, 0x2c, 0x1c, 0x3c,
- 0x02, 0x22, 0x12, 0x32, 0x0a, 0x2a, 0x1a, 0x3a,
- 0x06, 0x26, 0x16, 0x36, 0x0e, 0x2e, 0x1e, 0x3e,
- 0x01, 0x21, 0x11, 0x31, 0x09, 0x29, 0x19, 0x39,
- 0x05, 0x25, 0x15, 0x35, 0x0d, 0x2d, 0x1d, 0x3d,
- 0x03, 0x23, 0x13, 0x33, 0x0b, 0x2b, 0x1b, 0x3b,
- 0x07, 0x27, 0x17, 0x37, 0x0f, 0x2f, 0x1f, 0x3f};
-
-static complex_t buf[128];
-
-/* Twiddle factor LUT */
-static complex_t w_1[1];
-static complex_t w_2[2];
-static complex_t w_4[4];
-static complex_t w_8[8];
-static complex_t w_16[16];
-static complex_t w_32[32];
-static complex_t w_64[64];
-static complex_t * w[7] = {w_1, w_2, w_4, w_8, w_16, w_32, w_64};
-
-/* Twiddle factors for IMDCT */
-static sample_t xcos1[128];
-static sample_t xsin1[128];
-static sample_t xcos2[64];
-static sample_t xsin2[64];
-
-/* Windowing function for Modified DCT - Thank you acroread */
-sample_t imdct_window[] = {
- 0.00014, 0.00024, 0.00037, 0.00051, 0.00067, 0.00086, 0.00107, 0.00130,
- 0.00157, 0.00187, 0.00220, 0.00256, 0.00297, 0.00341, 0.00390, 0.00443,
- 0.00501, 0.00564, 0.00632, 0.00706, 0.00785, 0.00871, 0.00962, 0.01061,
- 0.01166, 0.01279, 0.01399, 0.01526, 0.01662, 0.01806, 0.01959, 0.02121,
- 0.02292, 0.02472, 0.02662, 0.02863, 0.03073, 0.03294, 0.03527, 0.03770,
- 0.04025, 0.04292, 0.04571, 0.04862, 0.05165, 0.05481, 0.05810, 0.06153,
- 0.06508, 0.06878, 0.07261, 0.07658, 0.08069, 0.08495, 0.08935, 0.09389,
- 0.09859, 0.10343, 0.10842, 0.11356, 0.11885, 0.12429, 0.12988, 0.13563,
- 0.14152, 0.14757, 0.15376, 0.16011, 0.16661, 0.17325, 0.18005, 0.18699,
- 0.19407, 0.20130, 0.20867, 0.21618, 0.22382, 0.23161, 0.23952, 0.24757,
- 0.25574, 0.26404, 0.27246, 0.28100, 0.28965, 0.29841, 0.30729, 0.31626,
- 0.32533, 0.33450, 0.34376, 0.35311, 0.36253, 0.37204, 0.38161, 0.39126,
- 0.40096, 0.41072, 0.42054, 0.43040, 0.44030, 0.45023, 0.46020, 0.47019,
- 0.48020, 0.49022, 0.50025, 0.51028, 0.52031, 0.53033, 0.54033, 0.55031,
- 0.56026, 0.57019, 0.58007, 0.58991, 0.59970, 0.60944, 0.61912, 0.62873,
- 0.63827, 0.64774, 0.65713, 0.66643, 0.67564, 0.68476, 0.69377, 0.70269,
- 0.71150, 0.72019, 0.72877, 0.73723, 0.74557, 0.75378, 0.76186, 0.76981,
- 0.77762, 0.78530, 0.79283, 0.80022, 0.80747, 0.81457, 0.82151, 0.82831,
- 0.83496, 0.84145, 0.84779, 0.85398, 0.86001, 0.86588, 0.87160, 0.87716,
- 0.88257, 0.88782, 0.89291, 0.89785, 0.90264, 0.90728, 0.91176, 0.91610,
- 0.92028, 0.92432, 0.92822, 0.93197, 0.93558, 0.93906, 0.94240, 0.94560,
- 0.94867, 0.95162, 0.95444, 0.95713, 0.95971, 0.96217, 0.96451, 0.96674,
- 0.96887, 0.97089, 0.97281, 0.97463, 0.97635, 0.97799, 0.97953, 0.98099,
- 0.98236, 0.98366, 0.98488, 0.98602, 0.98710, 0.98811, 0.98905, 0.98994,
- 0.99076, 0.99153, 0.99225, 0.99291, 0.99353, 0.99411, 0.99464, 0.99513,
- 0.99558, 0.99600, 0.99639, 0.99674, 0.99706, 0.99736, 0.99763, 0.99788,
- 0.99811, 0.99831, 0.99850, 0.99867, 0.99882, 0.99895, 0.99908, 0.99919,
- 0.99929, 0.99938, 0.99946, 0.99953, 0.99959, 0.99965, 0.99969, 0.99974,
- 0.99978, 0.99981, 0.99984, 0.99986, 0.99988, 0.99990, 0.99992, 0.99993,
- 0.99994, 0.99995, 0.99996, 0.99997, 0.99998, 0.99998, 0.99998, 0.99999,
- 0.99999, 0.99999, 0.99999, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000,
- 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000 };
-
-
-static inline void swap_cmplx(complex_t *a, complex_t *b)
-{
- complex_t tmp;
-
- tmp = *a;
- *a = *b;
- *b = tmp;
-}
-
-
-
-static inline complex_t cmplx_mult(complex_t a, complex_t b)
-{
- complex_t ret;
-
- ret.real = a.real * b.real - a.imag * b.imag;
- ret.imag = a.real * b.imag + a.imag * b.real;
-
- return ret;
-}
-
-void
-imdct_do_512(sample_t data[],sample_t delay[])
-{
- int i,k;
- int p,q;
- int m;
- int two_m;
- int two_m_plus_one;
-
- sample_t tmp_a_i;
- sample_t tmp_a_r;
- sample_t tmp_b_i;
- sample_t tmp_b_r;
-
- sample_t *data_ptr;
- sample_t *delay_ptr;
- sample_t *window_ptr;
-
- //
- // 512 IMDCT with source and dest data in 'data'
- //
-
- // Pre IFFT complex multiply plus IFFT cmplx conjugate
- for( i=0; i < 128; i++) {
- /* z[i] = (X[256-2*i-1] + j * X[2*i]) * (xcos1[i] + j * xsin1[i]) ; */
- buf[i].real = (data[256-2*i-1] * xcos1[i]) - (data[2*i] * xsin1[i]);
- buf[i].imag = -1.0 * ((data[2*i] * xcos1[i]) + (data[256-2*i-1] * xsin1[i]));
- }
-
- //Bit reversed shuffling
- for(i=0; i<128; i++) {
- k = bit_reverse_512[i];
- if (k < i)
- swap_cmplx(&buf[i],&buf[k]);
- }
-
- /* FFT Merge */
- for (m=0; m < 7; m++) {
- if(m)
- two_m = (1 << m);
- else
- two_m = 1;
-
- two_m_plus_one = (1 << (m+1));
-
- for(k = 0; k < two_m; k++) {
- for(i = 0; i < 128; i += two_m_plus_one) {
- p = k + i;
- q = p + two_m;
- tmp_a_r = buf[p].real;
- tmp_a_i = buf[p].imag;
- tmp_b_r = buf[q].real * w[m][k].real - buf[q].imag * w[m][k].imag;
- tmp_b_i = buf[q].imag * w[m][k].real + buf[q].real * w[m][k].imag;
- buf[p].real = tmp_a_r + tmp_b_r;
- buf[p].imag = tmp_a_i + tmp_b_i;
- buf[q].real = tmp_a_r - tmp_b_r;
- buf[q].imag = tmp_a_i - tmp_b_i;
- }
- }
- }
-
- /* Post IFFT complex multiply plus IFFT complex conjugate*/
- for( i=0; i < 128; i++) {
- /* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
- tmp_a_r = buf[i].real;
- tmp_a_i = -1.0 * buf[i].imag;
- buf[i].real =(tmp_a_r * xcos1[i]) - (tmp_a_i * xsin1[i]);
- buf[i].imag =(tmp_a_r * xsin1[i]) + (tmp_a_i * xcos1[i]);
- }
-
- data_ptr = data;
- delay_ptr = delay;
- window_ptr = imdct_window;
-
- /* Window and convert to real valued signal */
- for(i=0; i< 64; i++) {
- *data_ptr++ = 2.0f * (-buf[64+i].imag * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf[64-i-1].real * *window_ptr++ + *delay_ptr++);
- }
-
- for(i=0; i< 64; i++) {
- *data_ptr++ = 2.0f * (-buf[i].real * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf[128-i-1].imag * *window_ptr++ + *delay_ptr++);
- }
-
- /* The trailing edge of the window goes into the delay line */
- delay_ptr = delay;
-
- for(i=0; i< 64; i++) {
- *delay_ptr++ = -buf[64+i].real * *--window_ptr;
- *delay_ptr++ = buf[64-i-1].imag * *--window_ptr;
- }
-
- for(i=0; i<64; i++) {
- *delay_ptr++ = buf[i].imag * *--window_ptr;
- *delay_ptr++ = -buf[128-i-1].real * *--window_ptr;
- }
-}
-
-void
-imdct_do_256(sample_t data[],sample_t delay[])
-{
- int i,k;
- int p,q;
- int m;
- int two_m;
- int two_m_plus_one;
-
- sample_t tmp_a_i;
- sample_t tmp_a_r;
- sample_t tmp_b_i;
- sample_t tmp_b_r;
-
- sample_t *data_ptr;
- sample_t *delay_ptr;
- sample_t *window_ptr;
-
- complex_t *buf_1, *buf_2;
-
- buf_1 = &buf[0];
- buf_2 = &buf[64];
-
- /* Pre IFFT complex multiply plus IFFT cmplx conjugate */
- for(k=0; k<64; k++) {
- /* X1[k] = X[2*k] */
- /* X2[k] = X[2*k+1] */
-
- p = 2 * (128-2*k-1);
- q = 2 * (2 * k);
-
- /* Z1[k] = (X1[128-2*k-1] + j * X1[2*k]) * (xcos2[k] + j * xsin2[k]); */
- buf_1[k].real = data[p] * xcos2[k] - data[q] * xsin2[k];
- buf_1[k].imag = -1.0f * (data[q] * xcos2[k] + data[p] * xsin2[k]);
- /* Z2[k] = (X2[128-2*k-1] + j * X2[2*k]) * (xcos2[k] + j * xsin2[k]); */
- buf_2[k].real = data[p + 1] * xcos2[k] - data[q + 1] * xsin2[k];
- buf_2[k].imag = -1.0f * ( data[q + 1] * xcos2[k] + data[p + 1] * xsin2[k]);
- }
-
- //IFFT Bit reversed shuffling
- for(i=0; i<64; i++) {
- k = bit_reverse_256[i];
- if (k < i) {
- swap_cmplx(&buf_1[i],&buf_1[k]);
- swap_cmplx(&buf_2[i],&buf_2[k]);
- }
- }
-
- /* FFT Merge */
- for (m=0; m < 6; m++) {
- two_m = (1 << m);
- two_m_plus_one = (1 << (m+1));
-
- //FIXME
- if(m)
- two_m = (1 << m);
- else
- two_m = 1;
-
- for(k = 0; k < two_m; k++) {
- for(i = 0; i < 64; i += two_m_plus_one) {
- p = k + i;
- q = p + two_m;
- //Do block 1
- tmp_a_r = buf_1[p].real;
- tmp_a_i = buf_1[p].imag;
- tmp_b_r = buf_1[q].real * w[m][k].real - buf_1[q].imag * w[m][k].imag;
- tmp_b_i = buf_1[q].imag * w[m][k].real + buf_1[q].real * w[m][k].imag;
- buf_1[p].real = tmp_a_r + tmp_b_r;
- buf_1[p].imag = tmp_a_i + tmp_b_i;
- buf_1[q].real = tmp_a_r - tmp_b_r;
- buf_1[q].imag = tmp_a_i - tmp_b_i;
-
- //Do block 2
- tmp_a_r = buf_2[p].real;
- tmp_a_i = buf_2[p].imag;
- tmp_b_r = buf_2[q].real * w[m][k].real - buf_2[q].imag * w[m][k].imag;
- tmp_b_i = buf_2[q].imag * w[m][k].real + buf_2[q].real * w[m][k].imag;
- buf_2[p].real = tmp_a_r + tmp_b_r;
- buf_2[p].imag = tmp_a_i + tmp_b_i;
- buf_2[q].real = tmp_a_r - tmp_b_r;
- buf_2[q].imag = tmp_a_i - tmp_b_i;
- }
- }
- }
-
- /* Post IFFT complex multiply */
- for( i=0; i < 64; i++) {
- /* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */
- tmp_a_r = buf_1[i].real;
- tmp_a_i = -buf_1[i].imag;
- buf_1[i].real =(tmp_a_r * xcos2[i]) - (tmp_a_i * xsin2[i]);
- buf_1[i].imag =(tmp_a_r * xsin2[i]) + (tmp_a_i * xcos2[i]);
- /* y2[n] = z2[n] * (xcos2[n] + j * xsin2[n]) ; */
- tmp_a_r = buf_2[i].real;
- tmp_a_i = -buf_2[i].imag;
- buf_2[i].real =(tmp_a_r * xcos2[i]) - (tmp_a_i * xsin2[i]);
- buf_2[i].imag =(tmp_a_r * xsin2[i]) + (tmp_a_i * xcos2[i]);
- }
-
- data_ptr = data;
- delay_ptr = delay;
- window_ptr = imdct_window;
-
- /* Window and convert to real valued signal */
- for(i=0; i< 64; i++) {
- *data_ptr++ = 2.0f * (-buf_1[i].imag * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf_1[64-i-1].real * *window_ptr++ + *delay_ptr++);
- }
-
- for(i=0; i< 64; i++) {
- *data_ptr++ = 2.0f * (-buf_1[i].real * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf_1[64-i-1].imag * *window_ptr++ + *delay_ptr++);
- }
-
- delay_ptr = delay;
-
- for(i=0; i< 64; i++) {
- *delay_ptr++ = -buf_2[i].real * *--window_ptr;
- *delay_ptr++ = buf_2[64-i-1].imag * *--window_ptr;
- }
-
- for(i=0; i< 64; i++) {
- *delay_ptr++ = buf_2[i].imag * *--window_ptr;
- *delay_ptr++ = -buf_2[64-i-1].real * *--window_ptr;
- }
-}
-
-void imdct_init (void)
-{
-#ifdef LIBAC3_MLIB
- imdct_512 = imdct_do_512_mlib;
- imdct_256 = imdct_do_256_mlib;
-#else
- int i, j, k;
-
- /* Twiddle factors to turn IFFT into IMDCT */
- for (i = 0; i < 128; i++) {
- xcos1[i] = -cos ((M_PI / 2048) * (8 * i + 1));
- xsin1[i] = -sin ((M_PI / 2048) * (8 * i + 1));
- }
-
- /* More twiddle factors to turn IFFT into IMDCT */
- for (i = 0; i < 64; i++) {
- xcos2[i] = -cos ((M_PI / 1024) * (8 * i + 1));
- xsin2[i] = -sin ((M_PI / 1024) * (8 * i + 1));
- }
-
- for (i = 0; i < 7; i++) {
- j = 1 << i;
- for (k = 0; k < j; k++) {
- w[i][k].real = cos (-M_PI * k / j);
- w[i][k].imag = sin (-M_PI * k / j);
- }
- }
- imdct_512 = imdct_do_512;
- imdct_256 = imdct_do_256;
-#endif
-}
diff --git a/src/libac3/imdct_mlib.c b/src/libac3/imdct_mlib.c
deleted file mode 100644
index 1ba783359..000000000
--- a/src/libac3/imdct_mlib.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * imdct_mlib.c
- * Copyright (C) 2001 Håkan Hjort <d95hjort@dtek.chalmers.se>
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-#include "config.h"
-
-#ifdef LIBAC3_MLIB
-
-#include <inttypes.h>
-#include <mlib_types.h>
-#include <mlib_status.h>
-#include <mlib_signal.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-
-extern sample_t imdct_window[];
-
-void
-imdct_do_512_mlib(sample_t data[], sample_t delay[])
-{
- sample_t *buf_real;
- sample_t *buf_imag;
- sample_t *data_ptr;
- sample_t *delay_ptr;
- sample_t *window_ptr;
- sample_t tmp[256] __attribute__ ((__aligned__ (16)));
- int i;
-
- memcpy(tmp, data, 256 * sizeof(sample_t));
- if(mlib_SignalIMDCT_F32(tmp) != MLIB_SUCCESS) {
- fprintf(stderr, "mediaLib failure\n");
- exit(-1);
- }
-
- buf_real = tmp;
- buf_imag = tmp + 128;
- data_ptr = data;
- delay_ptr = delay;
- window_ptr = imdct_window;
-
- /* Window and convert to real valued signal */
- for(i=0; i< 64; i++)
- {
- *data_ptr++ = 2.0f * (-buf_imag[64+i] * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf_real[64-i-1] * *window_ptr++ + *delay_ptr++);
- }
-
- for(i=0; i< 64; i++)
- {
- *data_ptr++ = 2.0f * (-buf_real[i] * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf_imag[128-i-1] * *window_ptr++ + *delay_ptr++);
- }
-
- /* The trailing edge of the window goes into the delay line */
- delay_ptr = delay;
-
- for(i=0; i< 64; i++)
- {
- *delay_ptr++ = -buf_real[64+i] * *--window_ptr;
- *delay_ptr++ = buf_imag[64-i-1] * *--window_ptr;
- }
-
- for(i=0; i<64; i++)
- {
- *delay_ptr++ = buf_imag[i] * *--window_ptr;
- *delay_ptr++ = -buf_real[128-i-1] * *--window_ptr;
- }
-}
-
-void
-imdct_do_256_mlib(sample_t data[], sample_t delay[])
-{
- sample_t *buf1_real, *buf1_imag;
- sample_t *buf2_real, *buf2_imag;
- sample_t *data_ptr;
- sample_t *delay_ptr;
- sample_t *window_ptr;
- sample_t tmp[256] __attribute__ ((__aligned__ (16)));
- int i;
-
- memcpy(tmp, data, 256 * sizeof(sample_t));
- if(mlib_SignalIMDCT_F32(tmp) != MLIB_SUCCESS) {
- fprintf(stderr, "mediaLib failure\n");
- exit(-1);
- }
-
- buf1_real = tmp;
- buf1_imag = tmp + 64;
- buf2_real = tmp + 128;
- buf2_imag = tmp + 128 + 64;
- data_ptr = data;
- delay_ptr = delay;
- window_ptr = imdct_window;
-
- /* Window and convert to real valued signal */
- for(i=0; i< 64; i++)
- {
- *data_ptr++ = 2.0f * (-buf1_imag[i] * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf1_real[64-i-1] * *window_ptr++ + *delay_ptr++);
- }
-
- for(i=0; i< 64; i++)
- {
- *data_ptr++ = 2.0f * (-buf1_real[i] * *window_ptr++ + *delay_ptr++);
- *data_ptr++ = 2.0f * ( buf1_imag[64-i-1] * *window_ptr++ + *delay_ptr++);
- }
-
- delay_ptr = delay;
-
- for(i=0; i< 64; i++)
- {
- *delay_ptr++ = -buf2_real[i] * *--window_ptr;
- *delay_ptr++ = buf2_imag[64-i-1] * *--window_ptr;
- }
-
- for(i=0; i< 64; i++)
- {
- *delay_ptr++ = buf2_imag[i] * *--window_ptr;
- *delay_ptr++ = -buf2_real[64-i-1] * *--window_ptr;
- }
-}
-
-#endif
diff --git a/src/libac3/parse.c b/src/libac3/parse.c
deleted file mode 100644
index 7d7d7b3d0..000000000
--- a/src/libac3/parse.c
+++ /dev/null
@@ -1,689 +0,0 @@
-/*
- * parse.c
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- */
-
-#include "config.h"
-
-#include <inttypes.h>
-#include <string.h>
-
-#include "ac3.h"
-#include "ac3_internal.h"
-#include "bitstream.h"
-#include "tables.h"
-
-void ac3_init (void)
-{
- imdct_init ();
-}
-
-static uint8_t halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
-
-int ac3_syncinfo (uint8_t * buf, int * flags,
- int * sample_rate, int * bit_rate)
-{
- static int rate[] = { 32, 40, 48, 56, 64, 80, 96, 112,
- 128, 160, 192, 224, 256, 320, 384, 448,
- 512, 576, 640};
- static uint8_t lfeon[8] = {0x10, 0x10, 0x04, 0x04, 0x04, 0x01, 0x04, 0x01};
- int frmsizecod;
- int bitrate;
- int half;
- int acmod;
-
- if ((buf[0] != 0x0b) || (buf[1] != 0x77)) // syncword
- return 0;
-
- if (buf[5] >= 0x60) // bsid >= 12
- return 0;
- half = halfrate[buf[5] >> 3];
-
- // acmod, dsurmod and lfeon
- acmod = buf[6] >> 5;
- *flags = ((((buf[6] & 0xf8) == 0x50) ? AC3_DOLBY : acmod) |
- ((buf[6] & lfeon[acmod]) ? AC3_LFE : 0));
-
- frmsizecod = buf[4] & 63;
- if (frmsizecod >= 38)
- return 0;
- bitrate = rate [frmsizecod >> 1];
- *bit_rate = (bitrate * 1000) >> half;
-
- switch (buf[4] & 0xc0) {
- case 0: // 48 KHz
- *sample_rate = 48000 >> half;
- return 4 * bitrate;
- case 0x40:
- *sample_rate = 44100 >> half;
- return 2 * (320 * bitrate / 147 + (frmsizecod & 1));
- case 0x80:
- *sample_rate = 32000 >> half;
- return 6 * bitrate;
- default:
- return 0;
- }
-}
-
-int ac3_frame (ac3_state_t * state, uint8_t * buf, int * flags,
- sample_t * level, sample_t bias, sample_t * delay)
-{
- static sample_t clev[4] = {LEVEL_3DB, LEVEL_45DB, LEVEL_6DB, LEVEL_45DB};
- static sample_t slev[4] = {LEVEL_3DB, LEVEL_6DB, 0, LEVEL_6DB};
- int chaninfo;
- int acmod;
-
- state->fscod = buf[4] >> 6;
- state->halfrate = halfrate[buf[5] >> 3];
- state->acmod = acmod = buf[6] >> 5;
-
- bitstream_set_ptr (buf + 6);
- bitstream_get (3); // skip acmod we already parsed
-
- if ((acmod == 2) && (bitstream_get (2) == 2)) // dsurmod
- acmod = AC3_DOLBY;
-
- if ((acmod & 1) && (acmod != 1))
- state->clev = clev[bitstream_get (2)]; // cmixlev
-
- if (acmod & 4)
- state->slev = slev[bitstream_get (2)]; // surmixlev
-
- state->lfeon = bitstream_get (1);
-
- state->output = downmix_init (acmod, *flags, level,
- state->clev, state->slev);
- if (state->output < 0)
- return 1;
- if (state->lfeon && (*flags & AC3_LFE)) {
- state->output |= AC3_LFE;
- delay += 256;
- }
- *flags = state->output;
- state->level = *level;
- state->bias = bias;
- state->delay = delay;
-
- chaninfo = !acmod;
- do {
- bitstream_get (5); // dialnorm
- if (bitstream_get (1)) // compre
- bitstream_get (8); // compr
- if (bitstream_get (1)) // langcode
- bitstream_get (8); // langcod
- if (bitstream_get (1)) // audprodie
- bitstream_get (7); // mixlevel + roomtyp
- } while (chaninfo--);
-
- bitstream_get (2); // copyrightb + origbs
-
- if (bitstream_get (1)) // timecod1e
- bitstream_get (14); // timecod1
- if (bitstream_get (1)) // timecod2e
- bitstream_get (14); // timecod2
-
- if (bitstream_get (1)) { // addbsie
- int addbsil;
-
- addbsil = bitstream_get (6);
- do {
- bitstream_get (8); // addbsi
- } while (addbsil--);
- }
-
- return 0;
-}
-
-static int parse_exponents (int expstr, int ngrps, uint8_t exponent,
- uint8_t * dest)
-{
- int exps;
-
- while (ngrps--) {
- exps = bitstream_get (7);
-
- exponent += exp_1[exps];
- if (exponent > 24)
- return 1;
-
- switch (expstr) {
- case EXP_D45:
- *(dest++) = exponent;
- *(dest++) = exponent;
- case EXP_D25:
- *(dest++) = exponent;
- case EXP_D15:
- *(dest++) = exponent;
- }
-
- exponent += exp_2[exps];
- if (exponent > 24)
- return 1;
-
- switch (expstr) {
- case EXP_D45:
- *(dest++) = exponent;
- *(dest++) = exponent;
- case EXP_D25:
- *(dest++) = exponent;
- case EXP_D15:
- *(dest++) = exponent;
- }
-
- exponent += exp_3[exps];
- if (exponent > 24)
- return 1;
-
- switch (expstr) {
- case EXP_D45:
- *(dest++) = exponent;
- *(dest++) = exponent;
- case EXP_D25:
- *(dest++) = exponent;
- case EXP_D15:
- *(dest++) = exponent;
- }
- }
-
- return 0;
-}
-
-static int parse_deltba (int8_t * deltba)
-{
- int deltnseg, deltlen, delta, j;
-
- memset (deltba, 0, 50);
-
- deltnseg = bitstream_get (3);
- j = 0;
- do {
- j += bitstream_get (5);
- deltlen = bitstream_get (4);
- delta = bitstream_get (3);
- delta -= (delta >= 4) ? 3 : 4;
- if (!deltlen)
- continue;
- if (j + deltlen >= 50)
- return 1;
- while (deltlen--)
- deltba[j++] = delta;
- } while (deltnseg--);
-
- return 0;
-}
-
-static inline int zero_snr_offsets (int nfchans, ac3_state_t * state)
-{
- int i;
-
- if ((state->csnroffst) || (state->cplinu && state->cplba.fsnroffst) ||
- (state->lfeon && state->lfeba.fsnroffst))
- return 0;
- for (i = 0; i < nfchans; i++)
- if (state->ba[i].fsnroffst)
- return 0;
- return 1;
-}
-
-static sample_t q_1[2];
-static sample_t q_2[2];
-static sample_t q_4;
-static int q_1_pointer;
-static int q_2_pointer;
-static int q_4_pointer;
-
-#define GET_COEFF(COEFF,DITHER) \
- switch (bap[i]) { \
- case 0: \
- DITHER (scale_factor[exp[i]]); \
- \
- case -1: \
- if (q_1_pointer >= 0) { \
- COEFF (q_1[q_1_pointer--] * scale_factor[exp[i]]); \
- } else { \
- int code; \
- \
- code = bitstream_get (5); \
- \
- q_1_pointer = 1; \
- q_1[0] = q_1_2[code]; \
- q_1[1] = q_1_1[code]; \
- COEFF (q_1_0[code] * scale_factor[exp[i]]); \
- } \
- \
- case -2: \
- if (q_2_pointer >= 0) { \
- COEFF (q_2[q_2_pointer--] * scale_factor[exp[i]]); \
- } else { \
- int code; \
- \
- code = bitstream_get (7); \
- \
- q_2_pointer = 1; \
- q_2[0] = q_2_2[code]; \
- q_2[1] = q_2_1[code]; \
- COEFF (q_2_0[code] * scale_factor[exp[i]]); \
- } \
- \
- case 3: \
- COEFF (q_3[bitstream_get (3)] * scale_factor[exp[i]]); \
- \
- case -3: \
- if (q_4_pointer == 0) { \
- q_4_pointer = -1; \
- COEFF (q_4 * scale_factor[exp[i]]); \
- } else { \
- int code; \
- \
- code = bitstream_get (7); \
- \
- q_4_pointer = 0; \
- q_4 = q_4_1[code]; \
- COEFF (q_4_0[code] * scale_factor[exp[i]]); \
- } \
- \
- case 4: \
- COEFF (q_5[bitstream_get (4)] * scale_factor[exp[i]]); \
- \
- default: \
- COEFF (((int16_t)(bitstream_get(bap[i]) << (16 - bap[i]))) * \
- scale_factor[exp[i]]); \
- }
-
-#define CHANNEL_COEFF(val) \
- coeff[i] = val; \
- i++; \
- continue;
-
-#define CHANNEL_DITHER(val) \
- if (dither) { \
- coeff[i] = dither_gen () * val; \
- i++; \
- continue; \
- } else { \
- coeff[i] = 0; \
- i++; \
- continue; \
- }
-
-static uint16_t lfsr_state = 1;
-
-static inline int16_t dither_gen(void)
-{
- int16_t state;
-
- state = dither_lut[lfsr_state >> 8] ^ (lfsr_state << 8);
-
- lfsr_state = (uint16_t) state;
-
- return ((state * (int) (LEVEL_3DB * 256)) >> 8);
-}
-
-static void coeff_get (sample_t * coeff, uint8_t * exp, int8_t * bap,
- int dither, int end)
-{
- int i;
-
- i = 0;
- while (i < end)
- GET_COEFF (CHANNEL_COEFF, CHANNEL_DITHER);
-}
-
-#define COUPLING_COEFF(val) \
- cplcoeff = val; \
- break;
-
-#define COUPLING_DITHER(val) \
- cplcoeff = val; \
- for (ch = 0; ch < nfchans; ch++) \
- if (state->chincpl[ch]) { \
- if (dithflag[ch]) \
- samples[ch][i] = \
- state->cplco[ch][bnd] * dither_gen () * cplcoeff; \
- else \
- samples[ch][i] = 0; \
- } \
- i++; \
- continue;
-
-int ac3_block (ac3_state_t * state, sample_t samples[][256])
-{
- static const uint8_t nfchans_tbl[8] = {2, 1, 2, 3, 3, 4, 4, 5};
- static int rematrix_band[4] = {25, 37, 61, 253};
- int i, nfchans, chaninfo;
- uint8_t cplexpstr, chexpstr[5], lfeexpstr, do_bit_alloc, done_cpl;
- uint8_t blksw[5], dithflag[5];
-
- nfchans = nfchans_tbl[state->acmod];
-
- for (i = 0; i < nfchans; i++)
- blksw[i] = bitstream_get (1);
-
- for (i = 0; i < nfchans; i++)
- dithflag[i] = bitstream_get (1);
-
- chaninfo = !(state->acmod);
- do {
- if (bitstream_get (1)) // dynrnge
- bitstream_get (8); // dynrng
- } while (chaninfo--);
-
- if (bitstream_get (1)) { // cplstre
- state->cplinu = bitstream_get (1);
- if (state->cplinu) {
- static int bndtab[16] = {31, 35, 37, 39, 41, 42, 43, 44,
- 45, 45, 46, 46, 47, 47, 48, 48};
- int cplbegf;
- int cplendf;
- int ncplsubnd;
-
- for (i = 0; i < nfchans; i++)
- state->chincpl[i] = bitstream_get (1);
- switch (state->acmod) {
- case 0: case 1:
- return 1;
- case 2:
- state->phsflginu = bitstream_get (1);
- }
- cplbegf = bitstream_get (4);
- cplendf = bitstream_get (4);
-
- if (cplendf + 3 - cplbegf < 0)
- return 1;
- state->ncplbnd = ncplsubnd = cplendf + 3 - cplbegf;
- state->cplstrtbnd = bndtab[cplbegf];
- state->cplstrtmant = cplbegf * 12 + 37;
- state->cplendmant = cplendf * 12 + 73;
-
- for (i = 0; i < ncplsubnd - 1; i++) {
- state->cplbndstrc[i] = bitstream_get (1);
- state->ncplbnd -= state->cplbndstrc[i];
- }
- state->cplbndstrc[i] = 0; // last value is a sentinel
- }
- }
-
- if (state->cplinu) {
- int j, cplcoe;
-
- cplcoe = 0;
- for (i = 0; i < nfchans; i++)
- if (state->chincpl[i])
- if (bitstream_get (1)) { // cplcoe
- int mstrcplco, cplcoexp, cplcomant;
-
- cplcoe = 1;
- mstrcplco = 3 * bitstream_get (2);
- for (j = 0; j < state->ncplbnd; j++) {
- cplcoexp = bitstream_get (4);
- cplcomant = bitstream_get (4);
- if (cplcoexp == 15)
- cplcomant <<= 14;
- else
- cplcomant = (cplcomant | 0x10) << 13;
- state->cplco[i][j] =
- cplcomant * scale_factor[cplcoexp + mstrcplco];
- }
- }
- if ((state->acmod == 2) && state->phsflginu && cplcoe)
- for (j = 0; j < state->ncplbnd; j++)
- if (bitstream_get (1)) // phsflg
- state->cplco[1][j] = -state->cplco[1][j];
- }
-
- if ((state->acmod == 2) && (bitstream_get (1))) { // rematstr
- int end;
-
- end = (state->cplinu) ? state->cplstrtmant : 253;
- i = 0;
- do
- state->rematflg[i] = bitstream_get (1);
- while (rematrix_band[i++] < end);
- }
-
- cplexpstr = EXP_REUSE;
- lfeexpstr = EXP_REUSE;
- if (state->cplinu)
- cplexpstr = bitstream_get (2);
- for (i = 0; i < nfchans; i++)
- chexpstr[i] = bitstream_get (2);
- if (state->lfeon)
- lfeexpstr = bitstream_get (1);
-
- for (i = 0; i < nfchans; i++)
- if (chexpstr[i] != EXP_REUSE) {
- if (state->cplinu && state->chincpl[i])
- state->endmant[i] = state->cplstrtmant;
- else {
- int chbwcod;
-
- chbwcod = bitstream_get (6);
- if (chbwcod > 60)
- return 1;
- state->endmant[i] = chbwcod * 3 + 73;
- }
- }
-
- do_bit_alloc = 0;
-
- if (cplexpstr != EXP_REUSE) {
- int cplabsexp, ncplgrps;
-
- do_bit_alloc = 1;
- ncplgrps = ((state->cplendmant - state->cplstrtmant) /
- (3 << (cplexpstr - 1)));
- cplabsexp = bitstream_get (4) << 1;
- if (parse_exponents (cplexpstr, ncplgrps, cplabsexp,
- state->cpl_exp + state->cplstrtmant))
- return 1;
- }
- for (i = 0; i < nfchans; i++)
- if (chexpstr[i] != EXP_REUSE) {
- int grp_size, nchgrps;
-
- do_bit_alloc = 1;
- grp_size = 3 << (chexpstr[i] - 1);
- nchgrps = (state->endmant[i] + grp_size - 4) / grp_size;
- state->fbw_exp[i][0] = bitstream_get (4);
- if (parse_exponents (chexpstr[i], nchgrps, state->fbw_exp[i][0],
- state->fbw_exp[i] + 1))
- return 1;
- bitstream_get (2); // gainrng
- }
- if (lfeexpstr != EXP_REUSE) {
- do_bit_alloc = 1;
- state->lfe_exp[0] = bitstream_get (4);
- if (parse_exponents (lfeexpstr, 2, state->lfe_exp[0],
- state->lfe_exp + 1))
- return 1;
- }
-
- if (bitstream_get (1)) { // baie
- do_bit_alloc = 1;
- state->sdcycod = bitstream_get (2);
- state->fdcycod = bitstream_get (2);
- state->sgaincod = bitstream_get (2);
- state->dbpbcod = bitstream_get (2);
- state->floorcod = bitstream_get (3);
- }
- if (bitstream_get (1)) { //snroffste
- do_bit_alloc = 1;
- state->csnroffst = bitstream_get (6);
- if (state->cplinu) {
- state->cplba.fsnroffst = bitstream_get (4);
- state->cplba.fgaincod = bitstream_get (3);
- }
- for (i = 0; i < nfchans; i++) {
- state->ba[i].fsnroffst = bitstream_get (4);
- state->ba[i].fgaincod = bitstream_get (3);
- }
- if (state->lfeon) {
- state->lfeba.fsnroffst = bitstream_get (4);
- state->lfeba.fgaincod = bitstream_get (3);
- }
- }
- if ((state->cplinu) && (bitstream_get (1))) { // cplleake
- do_bit_alloc = 1;
- state->cplfleak = 2304 - (bitstream_get (3) << 8);
- state->cplsleak = 2304 - (bitstream_get (3) << 8);
- }
-
- if (bitstream_get (1)) { // deltbaie
- do_bit_alloc = 1;
- if (state->cplinu)
- state->cplba.deltbae = bitstream_get (2);
- for (i = 0; i < nfchans; i++)
- state->ba[i].deltbae = bitstream_get (2);
- if (state->cplinu && (state->cplba.deltbae == DELTA_BIT_NEW) &&
- parse_deltba (state->cplba.deltba))
- return 1;
- for (i = 0; i < nfchans; i++)
- if ((state->ba[i].deltbae == DELTA_BIT_NEW) &&
- parse_deltba (state->ba[i].deltba))
- return 1;
- }
-
- if (do_bit_alloc) {
- if (zero_snr_offsets (nfchans, state)) {
- memset (state->cpl_bap, 0, sizeof (state->cpl_bap));
- memset (state->fbw_bap, 0, sizeof (state->fbw_bap));
- memset (state->lfe_bap, 0, sizeof (state->lfe_bap));
- } else {
- if (state->cplinu)
- bit_allocate (state, &state->cplba, state->cplstrtbnd,
- state->cplstrtmant, state->cplendmant,
- state->cplfleak, state->cplsleak,
- state->cpl_exp, state->cpl_bap);
- for (i = 0; i < nfchans; i++)
- bit_allocate (state, state->ba + i, 0, 0, state->endmant[i],
- 0, 0, state->fbw_exp[i], state->fbw_bap[i]);
- if (state->lfeon) {
- state->lfeba.deltbae = DELTA_BIT_NONE;
- bit_allocate (state, &state->lfeba, 0, 0, 7, 0, 0,
- state->lfe_exp, state->lfe_bap);
- }
- }
- }
-
- if (bitstream_get (1)) { // skiple
- i = bitstream_get (9); // skipl
- while (i--)
- bitstream_get (8);
- }
-
- if (state->output & AC3_LFE)
- samples++; // shift for LFE channel
-
- q_1_pointer = q_2_pointer = q_4_pointer = -1;
- done_cpl = 0;
-
- for (i = 0; i < nfchans; i++) {
- int j;
-
- coeff_get (samples[i], state->fbw_exp[i], state->fbw_bap[i],
- dithflag[i], state->endmant[i]);
-
- if (state->cplinu && state->chincpl[i]) {
- if (!done_cpl) {
- int i, i_end, bnd, sub_bnd, ch;
- sample_t cplcoeff;
-
- done_cpl = 1;
-
-#define bap state->cpl_bap
-#define exp state->cpl_exp
-
- sub_bnd = bnd = 0;
- i = state->cplstrtmant;
- while (i < state->cplendmant) {
- i_end = i + 12;
- while (state->cplbndstrc[sub_bnd++])
- i_end += 12;
-
- while (i < i_end) {
- GET_COEFF (COUPLING_COEFF, COUPLING_DITHER);
- for (ch = 0; ch < nfchans; ch++)
- if (state->chincpl[ch])
- samples[ch][i] =
- state->cplco[ch][bnd] * cplcoeff;
- i++;
- }
- bnd++;
- }
-
-#undef bap
-#undef exp
- }
- j = state->cplendmant;
- } else
- j = state->endmant[i];
- for (; j < 256; j++)
- samples[i][j] = 0;
- }
-
- if (state->acmod == 2) {
- int j, end, band;
-
- end = ((state->endmant[0] < state->endmant[1]) ?
- state->endmant[0] : state->endmant[1]);
-
- i = 0;
- j = 13;
- do {
- if (!state->rematflg[i]) {
- j = rematrix_band[i++];
- continue;
- }
- band = rematrix_band[i++];
- if (band > end)
- band = end;
- do {
- sample_t tmp0, tmp1;
-
- tmp0 = samples[0][j];
- tmp1 = samples[1][j];
- samples[0][j] = tmp0 + tmp1;
- samples[1][j] = tmp0 - tmp1;
- } while (++j < band);
- } while (j < end);
- }
-
- if (state->lfeon) {
- coeff_get (samples[-1], state->lfe_exp, state->lfe_bap, 0, 7);
- if (state->output & AC3_LFE) {
- for (i = 7; i < 256; i++)
- samples[-1][i] = 0;
- imdct_512 (samples[-1], state->delay - 256);
- }
- }
-
- for (i = 0; i < nfchans; i++)
- if (blksw[i])
- imdct_256 (samples[i], state->delay + i * 256);
- else
- imdct_512 (samples[i], state->delay + i * 256);
-
- downmix (*samples, state->acmod, state->output, state->level, state->bias,
- state->clev, state->slev);
-
- return 0;
-}
diff --git a/src/libac3/tables.h b/src/libac3/tables.h
deleted file mode 100644
index 28f030895..000000000
--- a/src/libac3/tables.h
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * parse.c
- *
- * Copyright (C) Aaron Holtzman - May 1999
- *
- * This file is part of ac3dec, a free Dolby AC-3 stream decoder.
- *
- * ac3dec 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, or (at your option)
- * any later version.
- *
- * ac3dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- */
-
-static int8_t exp_1[128] = {
- -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
- -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 25,25,25
-};
-static int8_t exp_2[128] = {
- -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
- -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
- -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
- -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
- -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
- 25,25,25
-};
-static int8_t exp_3[128] = {
- -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
- -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
- -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
- -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
- -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
- 25,25,25
-};
-
-#define Q0 ((-2 << 15) / 3.0)
-#define Q1 (0)
-#define Q2 ((2 << 15) / 3.0)
-
-static const sample_t q_1_0[32] = {
- Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
- 0,0,0,0,0
-};
-
-static const sample_t q_1_1[32] = {
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- Q0,Q0,Q0,Q1,Q1,Q1,Q2,Q2,Q2,
- 0,0,0,0,0
-};
-
-static const sample_t q_1_2[32] = {
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- Q0,Q1,Q2,Q0,Q1,Q2,Q0,Q1,Q2,
- 0,0,0,0,0
-};
-
-#undef Q0
-#undef Q1
-#undef Q2
-
-#define Q0 ((-4 << 15) / 5.0)
-#define Q1 ((-2 << 15) / 5.0)
-#define Q2 (0)
-#define Q3 ((2 << 15) / 5.0)
-#define Q4 ((4 << 15) / 5.0)
-
-static const sample_t q_2_0[128] = {
- Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
- Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
- Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
- Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,
- Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,
- 0,0,0
-};
-
-static const sample_t q_2_1[128] = {
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
- 0,0,0
-};
-
-static const sample_t q_2_2[128] = {
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
- 0,0,0
-};
-
-#undef Q0
-#undef Q1
-#undef Q2
-#undef Q3
-#undef Q4
-
-static const sample_t q_3[8] = {
- (-6 << 15)/7.0, (-4 << 15)/7.0, (-2 << 15)/7.0, 0,
- ( 2 << 15)/7.0, ( 4 << 15)/7.0, ( 6 << 15)/7.0, 0
-};
-
-#define Q0 ((-10 << 15) / 11.0)
-#define Q1 ((-8 << 15) / 11.0)
-#define Q2 ((-6 << 15) / 11.0)
-#define Q3 ((-4 << 15) / 11.0)
-#define Q4 ((-2 << 15) / 11.0)
-#define Q5 (0)
-#define Q6 ((2 << 15) / 11.0)
-#define Q7 ((4 << 15) / 11.0)
-#define Q8 ((6 << 15) / 11.0)
-#define Q9 ((8 << 15) / 11.0)
-#define QA ((10 << 15) / 11.0)
-
-static const sample_t q_4_0[128] = {
- Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
- Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
- Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
- Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3,
- Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4,
- Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5,
- Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6,
- Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7,
- Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8,
- Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9,
- QA, QA, QA, QA, QA, QA, QA, QA, QA, QA, QA,
- 0, 0, 0, 0, 0, 0, 0
-};
-
-static const sample_t q_4_1[128] = {
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
- 0, 0, 0, 0, 0, 0, 0
-};
-
-#undef Q0
-#undef Q1
-#undef Q2
-#undef Q3
-#undef Q4
-#undef Q5
-#undef Q6
-#undef Q7
-#undef Q8
-#undef Q9
-#undef QA
-
-static const sample_t q_5[16] = {
- (-14 << 15)/15.0,(-12 << 15)/15.0,(-10 << 15)/15.0,
- ( -8 << 15)/15.0,( -6 << 15)/15.0,( -4 << 15)/15.0,
- ( -2 << 15)/15.0, 0 ,( 2 << 15)/15.0,
- ( 4 << 15)/15.0,( 6 << 15)/15.0,( 8 << 15)/15.0,
- ( 10 << 15)/15.0,( 12 << 15)/15.0,( 14 << 15)/15.0,
- 0
-};
-
-static sample_t scale_factor[25] = {
- 0.000030517578125,
- 0.0000152587890625,
- 0.00000762939453125,
- 0.000003814697265625,
- 0.0000019073486328125,
- 0.00000095367431640625,
- 0.000000476837158203125,
- 0.0000002384185791015625,
- 0.00000011920928955078125,
- 0.000000059604644775390625,
- 0.0000000298023223876953125,
- 0.00000001490116119384765625,
- 0.000000007450580596923828125,
- 0.0000000037252902984619140625,
- 0.00000000186264514923095703125,
- 0.000000000931322574615478515625,
- 0.0000000004656612873077392578125,
- 0.00000000023283064365386962890625,
- 0.000000000116415321826934814453125,
- 0.0000000000582076609134674072265625,
- 0.00000000002910383045673370361328125,
- 0.000000000014551915228366851806640625,
- 0.0000000000072759576141834259033203125,
- 0.00000000000363797880709171295166015625,
- 0.000000000001818989403545856475830078125
-};
-
-static const uint16_t dither_lut[256] = {
- 0x0000, 0xa011, 0xe033, 0x4022, 0x6077, 0xc066, 0x8044, 0x2055,
- 0xc0ee, 0x60ff, 0x20dd, 0x80cc, 0xa099, 0x0088, 0x40aa, 0xe0bb,
- 0x21cd, 0x81dc, 0xc1fe, 0x61ef, 0x41ba, 0xe1ab, 0xa189, 0x0198,
- 0xe123, 0x4132, 0x0110, 0xa101, 0x8154, 0x2145, 0x6167, 0xc176,
- 0x439a, 0xe38b, 0xa3a9, 0x03b8, 0x23ed, 0x83fc, 0xc3de, 0x63cf,
- 0x8374, 0x2365, 0x6347, 0xc356, 0xe303, 0x4312, 0x0330, 0xa321,
- 0x6257, 0xc246, 0x8264, 0x2275, 0x0220, 0xa231, 0xe213, 0x4202,
- 0xa2b9, 0x02a8, 0x428a, 0xe29b, 0xc2ce, 0x62df, 0x22fd, 0x82ec,
- 0x8734, 0x2725, 0x6707, 0xc716, 0xe743, 0x4752, 0x0770, 0xa761,
- 0x47da, 0xe7cb, 0xa7e9, 0x07f8, 0x27ad, 0x87bc, 0xc79e, 0x678f,
- 0xa6f9, 0x06e8, 0x46ca, 0xe6db, 0xc68e, 0x669f, 0x26bd, 0x86ac,
- 0x6617, 0xc606, 0x8624, 0x2635, 0x0660, 0xa671, 0xe653, 0x4642,
- 0xc4ae, 0x64bf, 0x249d, 0x848c, 0xa4d9, 0x04c8, 0x44ea, 0xe4fb,
- 0x0440, 0xa451, 0xe473, 0x4462, 0x6437, 0xc426, 0x8404, 0x2415,
- 0xe563, 0x4572, 0x0550, 0xa541, 0x8514, 0x2505, 0x6527, 0xc536,
- 0x258d, 0x859c, 0xc5be, 0x65af, 0x45fa, 0xe5eb, 0xa5c9, 0x05d8,
- 0xae79, 0x0e68, 0x4e4a, 0xee5b, 0xce0e, 0x6e1f, 0x2e3d, 0x8e2c,
- 0x6e97, 0xce86, 0x8ea4, 0x2eb5, 0x0ee0, 0xaef1, 0xeed3, 0x4ec2,
- 0x8fb4, 0x2fa5, 0x6f87, 0xcf96, 0xefc3, 0x4fd2, 0x0ff0, 0xafe1,
- 0x4f5a, 0xef4b, 0xaf69, 0x0f78, 0x2f2d, 0x8f3c, 0xcf1e, 0x6f0f,
- 0xede3, 0x4df2, 0x0dd0, 0xadc1, 0x8d94, 0x2d85, 0x6da7, 0xcdb6,
- 0x2d0d, 0x8d1c, 0xcd3e, 0x6d2f, 0x4d7a, 0xed6b, 0xad49, 0x0d58,
- 0xcc2e, 0x6c3f, 0x2c1d, 0x8c0c, 0xac59, 0x0c48, 0x4c6a, 0xec7b,
- 0x0cc0, 0xacd1, 0xecf3, 0x4ce2, 0x6cb7, 0xcca6, 0x8c84, 0x2c95,
- 0x294d, 0x895c, 0xc97e, 0x696f, 0x493a, 0xe92b, 0xa909, 0x0918,
- 0xe9a3, 0x49b2, 0x0990, 0xa981, 0x89d4, 0x29c5, 0x69e7, 0xc9f6,
- 0x0880, 0xa891, 0xe8b3, 0x48a2, 0x68f7, 0xc8e6, 0x88c4, 0x28d5,
- 0xc86e, 0x687f, 0x285d, 0x884c, 0xa819, 0x0808, 0x482a, 0xe83b,
- 0x6ad7, 0xcac6, 0x8ae4, 0x2af5, 0x0aa0, 0xaab1, 0xea93, 0x4a82,
- 0xaa39, 0x0a28, 0x4a0a, 0xea1b, 0xca4e, 0x6a5f, 0x2a7d, 0x8a6c,
- 0x4b1a, 0xeb0b, 0xab29, 0x0b38, 0x2b6d, 0x8b7c, 0xcb5e, 0x6b4f,
- 0x8bf4, 0x2be5, 0x6bc7, 0xcbd6, 0xeb83, 0x4b92, 0x0bb0, 0xaba1
-};
diff --git a/src/libac3/xine_decoder.c b/src/libac3/xine_decoder.c
deleted file mode 100644
index 7b7ee8794..000000000
--- a/src/libac3/xine_decoder.c
+++ /dev/null
@@ -1,474 +0,0 @@
-/*
- * Copyright (C) 2000-2001 the xine project
- *
- * This file is part of xine, a unix video player.
- *
- * xine 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.
- *
- * xine 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
- *
- * $Id: xine_decoder.c,v 1.24 2001/08/28 19:16:19 guenter Exp $
- *
- * stuff needed to turn libac3 into a xine decoder plugin
- */
-
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include "audio_out.h"
-#include "ac3.h"
-#include "ac3_internal.h"
-#include "buffer.h"
-#include "xine_internal.h"
-
-#define FRAME_SIZE 4096+512
-
-#undef DEBUG_AC3
-#ifdef DEBUG_AC3
-int ac3file;
-#endif
-
-typedef struct ac3dec_decoder_s {
- audio_decoder_t audio_decoder;
-
- uint32_t pts;
- uint32_t last_pts;
-
- uint8_t frame_buffer[FRAME_SIZE];
- uint8_t *frame_ptr;
- int sync_todo;
- int frame_length, frame_todo;
- uint16_t syncword;
-
- ac3_state_t ac3_state;
- int ac3_flags;
- int ac3_bit_rate;
- int ac3_sample_rate;
- float ac3_level;
- int have_lfe;
-
- int ac3_flags_map[8];
- int ao_flags_map[8];
-
- int16_t int_samples [6 * 256 * 6];
- sample_t delay[6*256];
- sample_t samples[6][256];
-
- ao_instance_t *audio_out;
- int audio_caps;
- int bypass_mode;
- int output_sampling_rate;
- int output_open;
- int output_mode;
-
-} ac3dec_decoder_t;
-
-int ac3dec_can_handle (audio_decoder_t *this_gen, int buf_type) {
- return ((buf_type & 0xFFFF0000) == BUF_AUDIO_A52) ;
-}
-
-
-void ac3dec_init (audio_decoder_t *this_gen, ao_instance_t *audio_out) {
-
- ac3dec_decoder_t *this = (ac3dec_decoder_t *) this_gen;
- /* int i; */
-
- this->audio_out = audio_out;
- this->audio_caps = audio_out->get_capabilities(audio_out);
- this->syncword = 0;
- this->sync_todo = 7;
- this->output_open = 0;
- this->pts = 0;
- this->last_pts = 0;
-
- ac3_init ();
-
- /*
- * find out if this driver supports ac3 output
- * or, if not, how many channels we've got
- */
-
- if (this->audio_caps & AO_CAP_MODE_AC3)
- this->bypass_mode = 1;
- else {
- this->bypass_mode = 0;
-
- this->ac3_flags_map[AC3_MONO] = AC3_MONO;
- this->ac3_flags_map[AC3_STEREO] = AC3_STEREO;
- this->ac3_flags_map[AC3_3F] = AC3_STEREO;
- this->ac3_flags_map[AC3_2F1R] = AC3_STEREO;
- this->ac3_flags_map[AC3_3F1R] = AC3_STEREO;
- this->ac3_flags_map[AC3_2F2R] = AC3_STEREO;
- this->ac3_flags_map[AC3_3F2R] = AC3_STEREO;
-
- this->ao_flags_map[AC3_MONO] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_STEREO] = AO_CAP_MODE_STEREO;
- this->ao_flags_map[AC3_3F] = AO_CAP_MODE_STEREO;
- this->ao_flags_map[AC3_2F1R] = AO_CAP_MODE_STEREO;
- this->ao_flags_map[AC3_3F1R] = AO_CAP_MODE_STEREO;
- this->ao_flags_map[AC3_2F2R] = AO_CAP_MODE_STEREO;
- this->ao_flags_map[AC3_3F2R] = AO_CAP_MODE_STEREO;
-
- /* find best mode */
- if (this->audio_caps & AO_CAP_MODE_5_1CHANNEL) {
-
- this->ac3_flags_map[AC3_2F2R] = AC3_2F2R;
- this->ac3_flags_map[AC3_3F2R] = AC3_3F2R | AC3_LFE;
- this->ao_flags_map[AC3_2F2R] = AO_CAP_MODE_4CHANNEL;
- this->ao_flags_map[AC3_3F2R] = AO_CAP_MODE_5CHANNEL;
-
- } else if (this->audio_caps & AO_CAP_MODE_5CHANNEL) {
-
- this->ac3_flags_map[AC3_2F2R] = AC3_2F2R;
- this->ac3_flags_map[AC3_3F2R] = AC3_3F2R;
- this->ao_flags_map[AC3_2F2R] = AO_CAP_MODE_4CHANNEL;
- this->ao_flags_map[AC3_3F2R] = AO_CAP_MODE_5CHANNEL;
-
- } else if (this->audio_caps & AO_CAP_MODE_4CHANNEL) {
-
- this->ac3_flags_map[AC3_2F2R] = AC3_2F2R;
- this->ac3_flags_map[AC3_3F2R] = AC3_2F2R;
-
- this->ao_flags_map[AC3_2F2R] = AO_CAP_MODE_4CHANNEL;
- this->ao_flags_map[AC3_3F2R] = AO_CAP_MODE_4CHANNEL;
-
- /* else if (this->audio_caps & AO_CAP_MODE_STEREO)
- defaults are ok */
- } else if (!(this->audio_caps & AO_CAP_MODE_STEREO)) {
- printf ("HELP! a mono-only audio driver?!\n");
-
- this->ac3_flags_map[AC3_MONO] = AC3_MONO;
- this->ac3_flags_map[AC3_STEREO] = AC3_MONO;
- this->ac3_flags_map[AC3_3F] = AC3_MONO;
- this->ac3_flags_map[AC3_2F1R] = AC3_MONO;
- this->ac3_flags_map[AC3_3F1R] = AC3_MONO;
- this->ac3_flags_map[AC3_2F2R] = AC3_MONO;
- this->ac3_flags_map[AC3_3F2R] = AC3_MONO;
-
- this->ao_flags_map[AC3_MONO] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_STEREO] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_3F] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_2F1R] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_3F1R] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_2F2R] = AO_CAP_MODE_MONO;
- this->ao_flags_map[AC3_3F2R] = AO_CAP_MODE_MONO;
- }
- }
-
- /*
- for (i = 0; i<8; i++)
- this->ac3_flags_map[i] |= AC3_ADJUST_LEVEL;
-*/
-#ifdef DEBUG_AC3
- ac3file = open ("test.ac3", O_CREAT | O_WRONLY | O_TRUNC, 0644);
-#endif
-}
-
-static inline int16_t blah (int32_t i)
-{
- if (i > 0x43c07fff)
- return 32767;
- else if (i < 0x43bf8000)
- return -32768;
- else
- return i - 0x43c00000;
-}
-
-static inline void float_to_int (float * _f, int16_t * s16, int num_channels) {
- int i;
- int32_t * f = (int32_t *) _f; /* XXX assumes IEEE float format */
-
- for (i = 0; i < 256; i++) {
- s16[num_channels*i] = blah (f[i]);
- }
-}
-
-static void ac3dec_decode_frame (ac3dec_decoder_t *this, uint32_t pts) {
-
- int output_mode = AO_CAP_MODE_STEREO;
-
- /*
- * do we want to decode this frame in software?
- */
-
- if (!this->bypass_mode) {
-
- int ac3_output_flags, i;
- float level = this->ac3_level;
-
- /*
- * oki, decode this frame in software
- */
-
- /* determine output mode */
-
- ac3_output_flags = this->ac3_flags_map[this->ac3_flags & AC3_CHANNEL_MASK];
-
- if (ac3_frame (&this->ac3_state,
- this->frame_buffer,
- &ac3_output_flags,
- &level, 384, this->delay)) {
- printf ("libac3: ac3_frame error\n");
- return;
- }
-
- this->have_lfe = ac3_output_flags & AC3_LFE;
- if (this->have_lfe)
- output_mode = AO_CAP_MODE_5_1CHANNEL;
- else
- output_mode = this->ao_flags_map[ac3_output_flags];
-
- /*
- * (re-)open output device
- */
-
- if (!this->output_open
- || (this->ac3_sample_rate != this->output_sampling_rate)
- || (output_mode != this->output_mode)) {
-
- if (this->output_open)
- this->audio_out->close (this->audio_out);
-
-
- this->output_open = (this->audio_out->open (this->audio_out, 16,
- this->ac3_sample_rate,
- output_mode) == 1);
- this->output_sampling_rate = this->ac3_sample_rate;
- this->output_mode = output_mode;
- }
-
-
- if (!this->output_open)
- return;
-
-
- /*
- * decode ac3 and convert/interleave samples
- */
-
- for (i = 0; i < 6; i++) {
- if (ac3_block (&this->ac3_state, this->samples)) {
- printf ("libac3: ac3_block error\n");
- return;
- }
-
- switch (output_mode) {
- case AO_CAP_MODE_MONO:
- float_to_int (this->samples[0], this->int_samples+(i*256), 1);
- break;
- case AO_CAP_MODE_STEREO:
- float_to_int (this->samples[0], this->int_samples+(i*256*2), 2);
- float_to_int (this->samples[1], this->int_samples+(i*256*2)+1, 2);
- break;
- case AO_CAP_MODE_4CHANNEL:
- float_to_int (this->samples[0], this->int_samples+(i*256*4), 4); /* L */
- float_to_int (this->samples[1], this->int_samples+(i*256*4)+1, 4); /* R */
- float_to_int (this->samples[2], this->int_samples+(i*256*4)+2, 4); /* RL */
- float_to_int (this->samples[3], this->int_samples+(i*256*4)+3, 4); /* RR */
- break;
- case AO_CAP_MODE_5CHANNEL:
- float_to_int (this->samples[0], this->int_samples+(i*256*5)+0, 5); /* L */
- float_to_int (this->samples[1], this->int_samples+(i*256*5)+4, 5); /* C */
- float_to_int (this->samples[2], this->int_samples+(i*256*5)+1, 5); /* R */
- float_to_int (this->samples[3], this->int_samples+(i*256*5)+2, 5); /* RL */
- float_to_int (this->samples[4], this->int_samples+(i*256*5)+3, 5); /* RR */
- break;
- case AO_CAP_MODE_5_1CHANNEL:
- float_to_int (this->samples[0], this->int_samples+(i*256*6)+5, 6); /* lfe */
- float_to_int (this->samples[1], this->int_samples+(i*256*6)+0, 6); /* L */
- float_to_int (this->samples[2], this->int_samples+(i*256*6)+4, 6); /* C */
- float_to_int (this->samples[3], this->int_samples+(i*256*6)+1, 6); /* R */
- float_to_int (this->samples[4], this->int_samples+(i*256*6)+2, 6); /* RL */
- float_to_int (this->samples[5], this->int_samples+(i*256*6)+3, 6); /* RR */
- break;
- default:
- printf ("libac3: help - unsupported mode %08x\n", output_mode);
- }
- }
-
- /* output decoded samples */
-
- this->audio_out->write (this->audio_out,
- this->int_samples,
- 256*6,
- pts);
- pts = 0;
-
- } else {
-
- /*
- * loop through ac3 data
- */
-
- if (!this->output_open) {
-
- int sample_rate, bit_rate, flags;
-
- ac3_syncinfo (this->frame_buffer, &flags, &sample_rate, &bit_rate);
-
- this->output_open = (this->audio_out->open (this->audio_out, 16,
- sample_rate,
- AO_CAP_MODE_AC3) == 1);
- this->output_mode = AO_CAP_MODE_AC3;
- }
-
- if (this->output_open) {
- this->audio_out->write (this->audio_out,
- (int16_t*)this->frame_buffer,
- this->frame_length,
- pts);
- }
- }
-}
-
-void ac3dec_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
-
- ac3dec_decoder_t *this = (ac3dec_decoder_t *) this_gen;
- uint8_t *current = buf->content;
- uint8_t *end = buf->content + buf->size;
- uint8_t byte;
-
- if (buf->decoder_info[0] == 0)
- return;
-
- /*
- printf ("libac3: got buffer, pts =%d, pts - last_pts=%d\n",
- buf->PTS, buf->PTS - this->last_pts);
-
- this->last_pts = buf->PTS;
- */
-
- if (buf->PTS)
- this->pts = buf->PTS;
-
-
- while (current != end) {
-
- if ( (this->sync_todo == 0) && (this->frame_todo == 0) ) {
- ac3dec_decode_frame (this, this->pts);
-#ifdef DEBUG_AC3
- write (ac3file, this->frame_buffer, this->frame_length);
-#endif
- this->pts = 0;
- this->sync_todo = 7;
- this->syncword = 0;
- }
-
- while (1) {
- byte = *current++;
-
- if (this->sync_todo>0) {
-
- /* search and collect syncinfo */
-
- if (this->syncword != 0x0b77) {
- this->syncword = (this->syncword << 8) | byte;
-
- if (this->syncword == 0x0b77) {
-
- this->frame_buffer[0] = 0x0b;
- this->frame_buffer[1] = 0x77;
-
- this->sync_todo = 5;
- this->frame_ptr = this->frame_buffer+2;
- }
- } else {
- *this->frame_ptr++ = byte;
- this->sync_todo--;
-
- if (this->sync_todo==0) {
-
- this->frame_length = ac3_syncinfo (this->frame_buffer,
- &this->ac3_flags,
- &this->ac3_sample_rate,
- &this->ac3_bit_rate);
- if (this->frame_length) {
- this->frame_todo = this->frame_length - 7;
- } else {
- this->sync_todo = 7;
- this->syncword = 0;
- printf ("libac3: skip frame of zero length\n");
- }
-
- }
-
- }
- } else {
-
- *this->frame_ptr++ = byte;
- this->frame_todo--;
-
- if (this->frame_todo == 0) {
- if (current == end)
- return ;
- break;
- }
- }
-
- if (current == end)
- return ;
- }
- }
-}
-
-void ac3dec_close (audio_decoder_t *this_gen) {
-
- ac3dec_decoder_t *this = (ac3dec_decoder_t *) this_gen;
-
- if (this->output_open)
- this->audio_out->close (this->audio_out);
-
- this->output_open = 0;
-
-#ifdef DEBUG_AC3
- close (ac3file);
-#endif
-}
-
-static char *ac3dec_get_id(void) {
- return "ac3dec";
-}
-
-audio_decoder_t *init_audio_decoder_plugin (int iface_version, config_values_t *cfg) {
-
- ac3dec_decoder_t *this ;
-
- if (iface_version != 2) {
- printf( "libac3: plugin doesn't support plugin API version %d.\n"
- "libac3: this means there's a version mismatch between xine and this "
- "libac3: decoder plugin.\nInstalling current plugins should help.\n",
- iface_version);
- return NULL;
- }
-
- this = (ac3dec_decoder_t *) malloc (sizeof (ac3dec_decoder_t));
-
- this->audio_decoder.interface_version = 2;
- this->audio_decoder.can_handle = ac3dec_can_handle;
- this->audio_decoder.init = ac3dec_init;
- this->audio_decoder.decode_data = ac3dec_decode_data;
- this->audio_decoder.close = ac3dec_close;
- this->audio_decoder.get_identifier = ac3dec_get_id;
- this->audio_decoder.priority = 1;
-
-
- this->ac3_level = (float) cfg->lookup_int (cfg, "ac3_level", 100) / 100.0;
-
- return (audio_decoder_t *) this;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-17 07:17:30 +0000