update to liba52 v 0.7.0 including the dynamic range compensation feature (disabled by default, enable it in your .xinerc if you want it)

CVS patchset: 515
CVS date: 2001/08/29 00:51:57

1 files changed, 0 insertions, 261 deletions

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);
-}