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authorAndree Buschmann <AndreeBuschmann@t-online.de>2010-02-22 21:02:57 +0000
committerAndree Buschmann <AndreeBuschmann@t-online.de>2010-02-22 21:02:57 +0000
commit3f5f3524d478743a4c2f470f0baf7b767ce8d1c2 (patch)
tree26a7df9071388e223c2f1b165dc84ae3bf4f5832 /apps/codecs/liba52/bit_allocate.c
parent398b37124e870b3be69a03e5d89c5887204d6990 (diff)
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Change liba52 and libmad to the original 8-spaced tabbing.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24863 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/liba52/bit_allocate.c')
-rw-r--r--apps/codecs/liba52/bit_allocate.c228
1 files changed, 114 insertions, 114 deletions
diff --git a/apps/codecs/liba52/bit_allocate.c b/apps/codecs/liba52/bit_allocate.c
index 3f68c92..aaac245 100644
--- a/apps/codecs/liba52/bit_allocate.c
+++ b/apps/codecs/liba52/bit_allocate.c
@@ -68,12 +68,12 @@ static int8_t baptab[305] IDATA_ATTR = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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 elems */
+ 0, 0, 0, 0 /* 148 padding elems */
};
static int bndtab[30] IDATA_ATTR = {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};
+ 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] IDATA_ATTR = {
-64, -63, -62, -61, -60, -59, -58, -57, -56, -55, -54, -53,
@@ -100,35 +100,35 @@ static int8_t latab[256] IDATA_ATTR = {
0, 0, 0, 0
};
-#define UPDATE_LEAK() \
-do { \
- fastleak += fdecay; \
+#define UPDATE_LEAK() \
+do { \
+ fastleak += fdecay; \
if (fastleak > psd + fgain) \
- fastleak = psd + fgain; \
- slowleak += sdecay; \
+ fastleak = psd + fgain; \
+ slowleak += sdecay; \
if (slowleak > psd + sgain) \
- 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; \
+#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 a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
- int start, int end, int fastleak, int slowleak,
- expbap_t * expbap)
+ int start, int end, int fastleak, int slowleak,
+ expbap_t * expbap)
{
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};
+ 0xa10, 0xa90, 0xb10, 0x1400};
int i, j;
uint8_t * exp;
@@ -141,17 +141,17 @@ void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
halfrate = state->halfrate;
fdecay = (63 + 20 * ((state->bai >> 7) & 3)) >> halfrate; /* fdcycod */
- fgain = 128 + 128 * (ba->bai & 7); /* fgaincod */
- sdecay = (15 + 2 * (state->bai >> 9)) >> halfrate; /* sdcycod */
- sgain = slowgain[(state->bai >> 5) & 3]; /* sgaincod */
- dbknee = dbpbtab[(state->bai >> 3) & 3]; /* dbpbcod */
+ fgain = 128 + 128 * (ba->bai & 7); /* fgaincod */
+ sdecay = (15 + 2 * (state->bai >> 9)) >> halfrate; /* sdcycod */
+ sgain = slowgain[(state->bai >> 5) & 3]; /* sgaincod */
+ dbknee = dbpbtab[(state->bai >> 3) & 3]; /* 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->bai & 7]; /* floorcod */
+ floor = floortab[state->bai & 7]; /* floorcod */
snroffset = 960 - 64 * state->csnroffst - 4 * (ba->bai >> 3) + floor;
floor >>= 5;
@@ -161,105 +161,105 @@ void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
i = bndstart;
j = start;
if (start == 0) { /* not the coupling channel */
- int lowcomp;
+ 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;
+ 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;
+ 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++;
}
- 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;
+ 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);
+ 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;
+ 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;
+ int startband, endband;
- startband = j;
- endband = (bndtab[i-20] < end) ? bndtab[i-20] : end;
- psd = 128 * exp[j++];
- while (j < endband) {
- int next, delta;
+ startband = j;
+ endband = (bndtab[i-20] < end) ? bndtab[i-20] : 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;
+ 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]];
- } while (++j < endband);
+ /* 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]];
+ } while (++j < endband);
} while (j < end);
}