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| author | Koen Vos <koen.vos@skype.net> | 2011-12-13 14:47:31 -0500 |
|---|---|---|
| committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-12-13 14:47:31 -0500 |
| commit | bf75c8ec4d0dded188bc7793de6da56c7ff0be1c (patch) | |
| tree | c21bb05faf0a203b73e8f8aae90fc63dac27625d /silk/main.h | |
| parent | 6619a736376221f2782cecff55d051c3ecfc2ff7 (diff) | |
| download | opus-bf75c8ec4d0dded188bc7793de6da56c7ff0be1c.tar.gz | |
SILK fixes following last codec WG meeting
decoder:
- fixed incorrect scaling of filter states for the smallest quantization
step sizes
- NLSF2A now limits the prediction gain of LPC filters
encoder:
- increased damping of LTP coefficients in LTP analysis
- increased white noise fraction in noise shaping LPC analysis
- introduced maximum total prediction gain. Used by Burg's method to
exit early if prediction gain is exceeded. This improves packet
loss robustness and numerical robustness in Burg's method
- Prefiltered signal is now in int32 Q10 domain, from int16 Q0
- Increased max number of iterations in CBR gain control loop from 5 to 6
- Removed useless code from LTP scaling control
- Optimization: smarter LPC loop unrolling
- Switched default win32 compile mode to be floating-point
resampler:
- made resampler have constant delay of 0.75 ms; removed delay
compensation from silk code.
- removed obsolete table entries (~850 Bytes)
- increased downsampling filter order from 16 to 18/24/36 (depending on
frequency ratio)
- reoptimized filter coefficients
Diffstat (limited to 'silk/main.h')
| -rw-r--r-- | silk/main.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/silk/main.h b/silk/main.h index adf11f6e..1d9e7b83 100644 --- a/silk/main.h +++ b/silk/main.h @@ -38,9 +38,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include "entenc.h" #include "entdec.h" -/* Simple way to make [8000, 12000, 16000, 24000, 48000] to [0,1,2,3,4] */ -#define rateID(R) ( ( ( ((R)>>12) - ((R)>16000) ) >> ((R)>24000) ) - 1 ) - /* Convert Left/Right stereo signal to adaptive Mid/Side representation */ void silk_stereo_LR_to_MS( stereo_enc_state *state, /* I/O State */ @@ -232,7 +229,7 @@ void silk_NSQ( const silk_encoder_state *psEncC, /* I/O Encoder State */ silk_nsq_state *NSQ, /* I/O NSQ state */ SideInfoIndices *psIndices, /* I/O Quantization Indices */ - const opus_int16 x[], /* I Prefiltered input signal */ + const opus_int32 x_Q10[], /* I Prefiltered input signal */ opus_int8 pulses[], /* O Quantized pulse signal */ const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ @@ -251,7 +248,7 @@ void silk_NSQ_del_dec( const silk_encoder_state *psEncC, /* I/O Encoder State */ silk_nsq_state *NSQ, /* I/O NSQ state */ SideInfoIndices *psIndices, /* I/O Quantization Indices */ - const opus_int16 x[], /* I Prefiltered input signal */ + const opus_int32 x_Q10[], /* I Prefiltered input signal */ opus_int8 pulses[], /* O Quantized pulse signal */ const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ |