summaryrefslogtreecommitdiffstats
path: root/sbc
diff options
context:
space:
mode:
authorBrad Midgley <bmidgley@xmission.com>2007-11-27 06:47:38 +0000
committerBrad Midgley <bmidgley@xmission.com>2007-11-27 06:47:38 +0000
commit41c458777419bf2ff42a911d1315d81b30607ba5 (patch)
tree5ec01148d921b041baa5df5508d26ca12eec6210 /sbc
parent4a2b8a2e67d13e8ed974e2e91e093383493883a7 (diff)
eliminate another max_bitneed loop, eliminate extraneous loop termination tests
Diffstat (limited to 'sbc')
-rw-r--r--sbc/sbc.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/sbc/sbc.c b/sbc/sbc.c
index de88f82a..ebf4a9d0 100644
--- a/sbc/sbc.c
+++ b/sbc/sbc.c
@@ -273,10 +273,14 @@ static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], ui
int bitneed[2][8], loudness, max_bitneed, bitcount, slicecount, bitslice;
int ch, sb;
+ max_bitneed = 0;
if (frame->allocation_method == SNR) {
for (ch = 0; ch < 2; ch++) {
- for (sb = 0; sb < frame->subbands; sb++)
+ for (sb = 0; sb < frame->subbands; sb++) {
bitneed[ch][sb] = frame->scale_factor[ch][sb];
+ if (bitneed[ch][sb] > max_bitneed)
+ max_bitneed = bitneed[ch][sb];
+ }
}
} else {
for (ch = 0; ch < 2; ch++) {
@@ -293,18 +297,12 @@ static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], ui
else
bitneed[ch][sb] = loudness;
}
+ if (bitneed[ch][sb] > max_bitneed)
+ max_bitneed = bitneed[ch][sb];
}
}
}
- max_bitneed = 0;
- for (ch = 0; ch < 2; ch++) {
- for (sb = 0; sb < frame->subbands; sb++) {
- if (bitneed[ch][sb] > max_bitneed)
- max_bitneed = bitneed[ch][sb];
- }
- }
-
bitcount = 0;
slicecount = 0;
bitslice = max_bitneed + 1;
@@ -341,7 +339,7 @@ static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], ui
ch = 0;
sb = 0;
- while ((bitcount < frame->bitpool) && (sb < frame->subbands)) {
+ while (bitcount < frame->bitpool) {
if ((bits[ch][sb] >= 2) && (bits[ch][sb] < 16)) {
bits[ch][sb]++;
bitcount++;
@@ -352,13 +350,14 @@ static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], ui
if (ch == 1) {
ch = 0;
sb++;
+ if (sb >= frame->subbands) break;
} else
ch = 1;
}
ch = 0;
sb = 0;
- while ((bitcount < frame->bitpool) && (sb < frame->subbands)) {
+ while (bitcount < frame->bitpool) {
if (bits[ch][sb] < 16) {
bits[ch][sb]++;
bitcount++;
@@ -366,6 +365,7 @@ static void sbc_calculate_bits(const struct sbc_frame *frame, int (*bits)[8], ui
if (ch == 1) {
ch = 0;
sb++;
+ if (sb >= frame->subbands) break;
} else
ch = 1;
}