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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7883 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2008-03-12 16:06:02 +00:00
parent 2e741e0f28
commit 959472d617
2 changed files with 44 additions and 35 deletions
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2
src/mod/formats/mod_shout/Makefile
View File

@ -40,7 +40,7 @@ $(SHOUT_DIR):
$(GETLIB) $(SHOUT).tar.gz $(GETLIB) $(SHOUT).tar.gz
$(SHOUT_DIR)/Makefile: $(SHOUT_DIR) $(SHOUT_DIR)/Makefile: $(SHOUT_DIR)
cd $(SHOUT_DIR) && ./configure $(DEFAULT_ARGS) --with-speex=no cd $(SHOUT_DIR) && ./configure $(DEFAULT_ARGS) --with-speex=no --without-vorbis
$(TOUCH_TARGET) $(TOUCH_TARGET)
$(SHOUTLA): $(SHOUT_DIR)/Makefile $(SHOUTLA): $(SHOUT_DIR)/Makefile

77
src/mod/formats/mod_shout/layer3.c
View File

@ -14,7 +14,7 @@
#define MPEG1 #define MPEG1
/* These should all be constants setup once using init_layer3_const */ /* These should all be constants setup once using init_layer3_const */
static real ispow[8207]; static real __ispow[8207];
static real aa_ca[8], aa_cs[8]; static real aa_ca[8], aa_cs[8];
static real COS1[12][6]; static real COS1[12][6];
static real win[4][36]; static real win[4][36];
@ -33,6 +33,14 @@ struct bandInfoStruct {
}; };
static inline real find_pow(int i)
{
return (i > 0 && i < 8207) ? __ispow[i] : 1;
}
struct bandInfoStruct bandInfo[9] = { struct bandInfoStruct bandInfo[9] = {
/* MPEG 1.0 */ /* MPEG 1.0 */
@ -104,7 +112,7 @@ void init_layer3_const(void)
gainpow2[i + 256] = pow((double) 2.0, -0.25 * (double) (i + 210)); gainpow2[i + 256] = pow((double) 2.0, -0.25 * (double) (i + 210));
for (i = 0; i < 8207; i++) for (i = 0; i < 8207; i++)
ispow[i] = pow((double) i, (double) 4.0 / 3.0); __ispow[i] = pow((double) i, (double) 4.0 / 3.0);
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++) {
static double Ci[8] = { -0.6, -0.535, -0.33, -0.185, -0.095, -0.041, -0.0142, -0.0037 }; static double Ci[8] = { -0.6, -0.535, -0.33, -0.185, -0.095, -0.041, -0.0142, -0.0037 };
@ -681,20 +689,21 @@ static int III_dequantize_sample(struct mpstr *mp, real xr[SBLIMIT][SSLIMIT], in
x = y >> 4; x = y >> 4;
y &= 0xf; y &= 0xf;
} }
if (x == 15) { if (x == 15) {
max[lwin] = cb; max[lwin] = cb;
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
x += getbits(mp, h->linbits); x += getbits(mp, h->linbits);
if (get1bit(mp)) if (get1bit(mp))
*xrpnt = -ispow[x] * v; *xrpnt = find_pow(x) * -1 * v;
else else
*xrpnt = ispow[x] * v; *xrpnt = find_pow(x) * v;
} else if (x) { } else if (x) {
max[lwin] = cb; max[lwin] = cb;
if (get1bit(mp)) if (get1bit(mp))
*xrpnt = -ispow[x] * v; *xrpnt = find_pow(x) * -1 * v;
else else
*xrpnt = ispow[x] * v; *xrpnt = find_pow(x) * v;
part2remain--; part2remain--;
} else } else
*xrpnt = 0.0; *xrpnt = 0.0;
@ -704,15 +713,15 @@ static int III_dequantize_sample(struct mpstr *mp, real xr[SBLIMIT][SSLIMIT], in
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
y += getbits(mp, h->linbits); y += getbits(mp, h->linbits);
if (get1bit(mp)) if (get1bit(mp))
*xrpnt = -ispow[y] * v; *xrpnt = find_pow(y) * -1 * v;
else else
*xrpnt = ispow[y] * v; *xrpnt = find_pow(y) * v;
} else if (y) { } else if (y) {
max[lwin] = cb; max[lwin] = cb;
if (get1bit(mp)) if (get1bit(mp))
*xrpnt = -ispow[y] * v; *xrpnt = find_pow(y) * -1 * v;
else else
*xrpnt = ispow[y] * v; *xrpnt = find_pow(y) * v;
part2remain--; part2remain--;
} else } else
*xrpnt = 0.0; *xrpnt = 0.0;
@ -859,15 +868,15 @@ static int III_dequantize_sample(struct mpstr *mp, real xr[SBLIMIT][SSLIMIT], in
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
x += getbits(mp, h->linbits); x += getbits(mp, h->linbits);
if (get1bit(mp)) if (get1bit(mp))
*xrpnt++ = -ispow[x] * v; *xrpnt++ = find_pow(x) * -1 * v;
else else
*xrpnt++ = ispow[x] * v; *xrpnt++ = find_pow(x) * v;
} else if (x) { } else if (x) {
max = cb; max = cb;
if (get1bit(mp)) if (get1bit(mp))
*xrpnt++ = -ispow[x] * v; *xrpnt++ = find_pow(x) * -1 * v;
else else
*xrpnt++ = ispow[x] * v; *xrpnt++ = find_pow(x) * v;
part2remain--; part2remain--;
} else } else
*xrpnt++ = 0.0; *xrpnt++ = 0.0;
@ -877,15 +886,15 @@ static int III_dequantize_sample(struct mpstr *mp, real xr[SBLIMIT][SSLIMIT], in
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
y += getbits(mp, h->linbits); y += getbits(mp, h->linbits);
if (get1bit(mp)) if (get1bit(mp))
*xrpnt++ = -ispow[y] * v; *xrpnt++ = find_pow(y) * -1 * v;
else else
*xrpnt++ = ispow[y] * v; *xrpnt++ = find_pow(y) * v;
} else if (y) { } else if (y) {
max = cb; max = cb;
if (get1bit(mp)) if (get1bit(mp))
*xrpnt++ = -ispow[y] * v; *xrpnt++ = find_pow(y) * -1 * v;
else else
*xrpnt++ = ispow[y] * v; *xrpnt++ = find_pow(y) * v;
part2remain--; part2remain--;
} else } else
*xrpnt++ = 0.0; *xrpnt++ = 0.0;
@ -1049,22 +1058,22 @@ static int III_dequantize_sample_ms(real xr[2][SBLIMIT][SSLIMIT], int *scf, stru
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
x += getbits(mp, h->linbits); x += getbits(mp, h->linbits);
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt = *xr0pnt + a; *xrpnt = *xr0pnt + a;
*xr0pnt -= a; *xr0pnt -= a;
} else { } else {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt = *xr0pnt - a; *xrpnt = *xr0pnt - a;
*xr0pnt += a; *xr0pnt += a;
} }
} else if (x) { } else if (x) {
max[lwin] = cb; max[lwin] = cb;
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt = *xr0pnt + a; *xrpnt = *xr0pnt + a;
*xr0pnt -= a; *xr0pnt -= a;
} else { } else {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt = *xr0pnt - a; *xrpnt = *xr0pnt - a;
*xr0pnt += a; *xr0pnt += a;
} }
@ -1079,22 +1088,22 @@ static int III_dequantize_sample_ms(real xr[2][SBLIMIT][SSLIMIT], int *scf, stru
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
y += getbits(mp, h->linbits); y += getbits(mp, h->linbits);
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt = *xr0pnt + a; *xrpnt = *xr0pnt + a;
*xr0pnt -= a; *xr0pnt -= a;
} else { } else {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt = *xr0pnt - a; *xrpnt = *xr0pnt - a;
*xr0pnt += a; *xr0pnt += a;
} }
} else if (y) { } else if (y) {
max[lwin] = cb; max[lwin] = cb;
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt = *xr0pnt + a; *xrpnt = *xr0pnt + a;
*xr0pnt -= a; *xr0pnt -= a;
} else { } else {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt = *xr0pnt - a; *xrpnt = *xr0pnt - a;
*xr0pnt += a; *xr0pnt += a;
} }
@ -1231,22 +1240,22 @@ static int III_dequantize_sample_ms(real xr[2][SBLIMIT][SSLIMIT], int *scf, stru
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
x += getbits(mp, h->linbits); x += getbits(mp, h->linbits);
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt++ = *xr0pnt + a; *xrpnt++ = *xr0pnt + a;
*xr0pnt++ -= a; *xr0pnt++ -= a;
} else { } else {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt++ = *xr0pnt - a; *xrpnt++ = *xr0pnt - a;
*xr0pnt++ += a; *xr0pnt++ += a;
} }
} else if (x) { } else if (x) {
max = cb; max = cb;
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt++ = *xr0pnt + a; *xrpnt++ = *xr0pnt + a;
*xr0pnt++ -= a; *xr0pnt++ -= a;
} else { } else {
real a = ispow[x] * v; real a = find_pow(x) * v;
*xrpnt++ = *xr0pnt - a; *xrpnt++ = *xr0pnt - a;
*xr0pnt++ += a; *xr0pnt++ += a;
} }
@ -1259,22 +1268,22 @@ static int III_dequantize_sample_ms(real xr[2][SBLIMIT][SSLIMIT], int *scf, stru
part2remain -= h->linbits + 1; part2remain -= h->linbits + 1;
y += getbits(mp, h->linbits); y += getbits(mp, h->linbits);
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt++ = *xr0pnt + a; *xrpnt++ = *xr0pnt + a;
*xr0pnt++ -= a; *xr0pnt++ -= a;
} else { } else {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt++ = *xr0pnt - a; *xrpnt++ = *xr0pnt - a;
*xr0pnt++ += a; *xr0pnt++ += a;
} }
} else if (y) { } else if (y) {
max = cb; max = cb;
if (get1bit(mp)) { if (get1bit(mp)) {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt++ = *xr0pnt + a; *xrpnt++ = *xr0pnt + a;
*xr0pnt++ -= a; *xr0pnt++ -= a;
} else { } else {
real a = ispow[y] * v; real a = find_pow(y) * v;
*xrpnt++ = *xr0pnt - a; *xrpnt++ = *xr0pnt - a;
*xr0pnt++ += a; *xr0pnt++ += a;
} }