From: Johan Hedberg <[email protected]>
---
src/modules/bluetooth/sbc/sbc.c | 36 ++++++++++++++++++++----------------
1 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/src/modules/bluetooth/sbc/sbc.c b/src/modules/bluetooth/sbc/sbc.c
index ad391bd..c5015ab 100644
--- a/src/modules/bluetooth/sbc/sbc.c
+++ b/src/modules/bluetooth/sbc/sbc.c
@@ -493,26 +493,30 @@ static int sbc_unpack_frame(const uint8_t *data, struct
sbc_frame *frame,
for (blk = 0; blk < frame->blocks; blk++) {
for (ch = 0; ch < frame->channels; ch++) {
for (sb = 0; sb < frame->subbands; sb++) {
- if (levels[ch][sb] > 0) {
- uint32_t shift =
- frame->scale_factor[ch][sb] +
+ uint32_t shift;
+
+ if (levels[ch][sb] == 0) {
+ frame->sb_sample[blk][ch][sb] = 0;
+ continue;
+ }
+
+ shift = frame->scale_factor[ch][sb] +
1 + SBCDEC_FIXED_EXTRA_BITS;
- audio_sample = 0;
- for (bit = 0; bit < bits[ch][sb];
bit++) {
- if (consumed > len * 8)
- return -1;
- if ((data[consumed >> 3] >> (7
- (consumed & 0x7))) & 0x01)
- audio_sample |= 1 <<
(bits[ch][sb] - bit - 1);
+ audio_sample = 0;
+ for (bit = 0; bit < bits[ch][sb]; bit++) {
+ if (consumed > len * 8)
+ return -1;
- consumed++;
- }
+ if ((data[consumed >> 3] >> (7 -
(consumed & 0x7))) & 0x01)
+ audio_sample |= 1 <<
(bits[ch][sb] - bit - 1);
- frame->sb_sample[blk][ch][sb] =
(int32_t)
- (((((uint64_t) audio_sample <<
1) | 1) << shift) /
- levels[ch][sb]) - (1 << shift);
- } else
- frame->sb_sample[blk][ch][sb] = 0;
+ consumed++;
+ }
+
+ frame->sb_sample[blk][ch][sb] = (int32_t)
+ (((((uint64_t) audio_sample << 1) | 1)
<< shift) /
+ levels[ch][sb]) - (1 << shift);
}
}
}
--
1.7.6.4
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