diff options
Diffstat (limited to 'media/libopus/celt/rate.c')
| -rw-r--r-- | media/libopus/celt/rate.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/media/libopus/celt/rate.c b/media/libopus/celt/rate.c index 9062ff750b..465e1ba26c 100644 --- a/media/libopus/celt/rate.c +++ b/media/libopus/celt/rate.c @@ -348,12 +348,17 @@ static OPUS_INLINE int interp_bits2pulses(const CELTMode *m, int start, int end, /*This if() block is the only part of the allocation function that is not a mandatory part of the bitstream: any bands we choose to skip here must be explicitly signaled.*/ - /*Choose a threshold with some hysteresis to keep bands from - fluctuating in and out.*/ + int depth_threshold; + /*We choose a threshold with some hysteresis to keep bands from + fluctuating in and out, but we try not to fold below a certain point. */ + if (codedBands > 17) + depth_threshold = j<prev ? 7 : 9; + else + depth_threshold = 0; #ifdef FUZZING if ((rand()&0x1) == 0) #else - if (codedBands<=start+2 || (band_bits > ((j<prev?7:9)*band_width<<LM<<BITRES)>>4 && j<=signalBandwidth)) + if (codedBands<=start+2 || (band_bits > (depth_threshold*band_width<<LM<<BITRES)>>4 && j<=signalBandwidth)) #endif { ec_enc_bit_logp(ec, 1, 1); @@ -524,7 +529,7 @@ static OPUS_INLINE int interp_bits2pulses(const CELTMode *m, int start, int end, return codedBands; } -int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stereo, +int clt_compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stereo, opus_int32 total, opus_int32 *balance, int *pulses, int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev, int signalBandwidth) { int lo, hi, len, j; @@ -636,3 +641,4 @@ int compute_allocation(const CELTMode *m, int start, int end, const int *offsets RESTORE_STACK; return codedBands; } + |