search for: nbeband

...+ { + seed = lcg_rand(seed); + X[boffs+j] = (celt_int32)(seed)>>20; + } + renormalise_vector(X+boffs, blen, Q15ONE); + } } st->rng = seed; - for (c=0;c<C;c++) - for (i=0;i<st->mode->nbEBands;i++) - renormalise_vector(X+N*c+(st->mode->eBands[i]<<LM), (st->mode->eBands[i+1]-st->mode->eBands[i])<<LM, Q15ONE); - denormalise_bands(st->mode, X, freq, bandE, st->mode->nbEBands, C, 1<<LM); + denormalise_bands(st->mode, X,...

...in the 15 khz to 21 khz range. The amount of noise also caused the output to clip numerous times. The problems where observed when encoding 48kHz at 60kbs using the following parameters: <rate> 48000 <channels> 1 <frame size> 1024 <bytes per packet> 160 At these settings nbEBands = 25. However the eMeans[] array as defined in the top of quant_bands.c and used in quant_coarse_energy() and unquant_coarse_energy() has only 24 members. Using the settings above, the code illegally reads the 25th member from random memory. If this memory is 0 as in the x86 implementations te...

Hi all, In my setup, I'm using a framesize of 320 samples at a sample rate of 32000 Hz (10 ms frames). This gives me a mode where nbEBands is 21 and eBands[21] is 100 (the standard 2.5 ms short block ebands). This also gives me LM = 2, so what happens is eBands[nbEBands]<<LM is 400, whereas my framesize is only 320. This causes a stack overrun at line 1978 in celt.c in both calls to "renormalise_vector" and "...

...t_inner_prod_c(&X[c*N+(eBands[i]<<LM)], &X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM); + sum = 1e-27f + celt_inner_prod(&X[c*N+(eBands[i]<<LM)], &X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM, arch); bandE[i+c*m->nbEBands] = celt_sqrt(sum); /*printf ("%f ", bandE[i+c*m->nbEBands]);*/ } diff --git a/celt/bands.h b/celt/bands.h index c040c7f..61ae0cd 100644 --- a/celt/bands.h +++ b/celt/bands.h @@ -41,7 +41,7 @@ * @param X Spectrum * @param bandE Square root of the energy for each ba...

...1); /* Folding flag */ - ec_enc_bits(&enc, id, 7); ec_enc_uint(&enc, pitch_index, MAX_PERIOD-(2*N-2*N4)); } else { if (!shortBlocks) @@ -618,6 +613,8 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si for (i=0;i<st->mode->nbEBands;i++) offsets[i] = 0; bits = nbCompressedBytes*8 - ec_enc_tell(&enc, 0) - 1; + if (has_pitch) + bits -= st->mode->nbPBands; #ifndef STDIN_TUNING compute_allocation(st->mode, offsets, stereo_mode, bits, pulses, fine_quant); #endif @@ -991,10 +988,6 @@ int celt_de...

...n[0]+NB*b, mode->window, overlap, shift, B); + clt_mdct_backward(&mode->mdct, &freq[b], out_syn[0]+NB*b, mode->window, overlap, shift, B, arch); } else { /* Normal case (mono or stereo) */ c=0; do { denormalise_bands(mode, X+c*N, freq, oldBandE+c*nbEBands, start, effEnd, M, downsample, silence); for (b=0;b<B;b++) - clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->window, overlap, shift, B); + clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->...

...n[0]+NB*b, mode->window, overlap, shift, B); + clt_mdct_backward(&mode->mdct, &freq[b], out_syn[0]+NB*b, mode->window, overlap, shift, B, arch); } else { /* Normal case (mono or stereo) */ c=0; do { denormalise_bands(mode, X+c*N, freq, oldBandE+c*nbEBands, start, effEnd, M, downsample, silence); for (b=0;b<B;b++) - clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->window, overlap, shift, B); + clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->...

...f /* !defined(FIXED_POINT) && defined(HAVE_ARM_NE10) */ + +#endif diff --git a/celt/celt_encoder.c b/celt/celt_encoder.c index 86a3fbb..7a2c71b 100644 --- a/celt/celt_encoder.c +++ b/celt/celt_encoder.c @@ -414,7 +414,8 @@ int patch_transient_decision(opus_val16 *newE, opus_val16 *oldE, int nbEBands, /** Apply window and compute the MDCT for all sub-frames and all channels in a frame */ static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * OPUS_RESTRICT in, - celt_sig * OPUS_RESTRICT out, int C, int CC, int LM, int upsample) +...

...f /* !defined(FIXED_POINT) && defined(HAVE_ARM_NE10) */ + +#endif diff --git a/celt/celt_encoder.c b/celt/celt_encoder.c index 86a3fbb..7a2c71b 100644 --- a/celt/celt_encoder.c +++ b/celt/celt_encoder.c @@ -414,7 +414,8 @@ int patch_transient_decision(opus_val16 *newE, opus_val16 *oldE, int nbEBands, /** Apply window and compute the MDCT for all sub-frames and all channels in a frame */ static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * OPUS_RESTRICT in, - celt_sig * OPUS_RESTRICT out, int C, int CC, int LM, int upsample) +...

...f /* !defined(FIXED_POINT) && defined(HAVE_ARM_NE10) */ + +#endif diff --git a/celt/celt_encoder.c b/celt/celt_encoder.c index 86a3fbb..7a2c71b 100644 --- a/celt/celt_encoder.c +++ b/celt/celt_encoder.c @@ -414,7 +414,8 @@ int patch_transient_decision(opus_val16 *newE, opus_val16 *oldE, int nbEBands, /** Apply window and compute the MDCT for all sub-frames and all channels in a frame */ static void compute_mdcts(const CELTMode *mode, int shortBlocks, celt_sig * OPUS_RESTRICT in, - celt_sig * OPUS_RESTRICT out, int C, int CC, int LM, int upsample) +...

Hello All, I extended the libNE10 optimizations for float towards mdct_backwards/opus_ifft. I am able to get about 14.26% improvement for Decode use case now on my Beaglebone Black. Please see [1] for measurements. Questions 1. Since this patch needs to go in after Encode [2] patch) should I submit this as patch series? 2. Since Jonathan Lennox posted intrinsics cleanup [3] patch, should

Changes from RFC PATCH v3 - Just rebased on tip - For all else, please see notes from RFC PATCH v3 at http://lists.xiph.org/pipermail/opus/2015-March/002902.html - latest wip opus tree/branch https://git.linaro.org/people/viswanath.puttagunta/Ne10.git branch: rfcv4_final_fft_ne10 Viswanath Puttagunta (1): armv7(float): Optimize encode usecase using NE10 library Makefile.am

Changes from RFC PATCH v1: - passing arch parameter explicitly - reduced stack usage by ~3.5K by using scaled NE10 fft version - moved all optimization array functions to arm_celt_map.c - Other cleanups pointed out by Timothy Phil, As you mentioned earlier, could you please address all compile and linker errors/warnings coming out of Ne10 library? You can find my working Ne10 repo at [1] You

Changes from RFC PATCH v2 - fixed compile issue when just compiling for --enable-intrinsics for ARMv7 without NE10 - Notes for NE10: - All compile/link warnings are now in upstream NE10 - Only patch pending upstream in NE10 is the one that needs to add -funsafe-math-optimizations for ARMv7 targets. - Phil Wang @ ARM is working on getting this fixed. - Note that even without

Hi All, Since I continue to base my work on top of Jonathan's patch, and my previous Ne10 fft/ifft/mdct_forward/backward patches, I thought it would be better to just post all new patches as a patch series. Please let me know if anyone disagrees with this approach. You can see wip branch of all latest patches at https://git.linaro.org/people/viswanath.puttagunta/opus.git Branch:

Hi Timothy, As I mentioned earlier [1], I now fixed compile issues with fixed point and resubmitting the patch. I also have new patch that does intrinsics optimizations for celt_pitch_xcorr targetting aarch64. You can find my latest work-in-progress branch at [2] For reference, you can use the Ne10 pre-built libraries at [3] Note that I am working with Phil at ARM to get my patch at [4]

Hi All, As per Timothy's suggestion, disabling mdct_forward for fixed point. Only effects armv7,armv8: Extend fixed fft NE10 optimizations to mdct Rest of patches are same as in [1] For reference, latest wip code for opus is at [2] Still working with NE10 team at ARM to get corner cases of mdct_forward. Will update with another patch when issue in NE10 gets fixed. Regards, Vish [1]:

Hi All, Changes from RFC v2 [1] armv7,armv8: Extend fixed fft NE10 optimizations to mdct - Overflow issue fixed by Phil at ARM. Ne10 wip at [2]. Should be upstream soon. - So, re-enabled using fixed fft for mdct_forward which was disabled in RFCv2 armv7,armv8: Optimize fixed point fft using NE10 library - Thanks to Jonathan Lennox, fixed some build fixes on iOS and some copy-paste errors Rest

Hello Timothy / Jean-Marc / opus-dev, This patch series is follow up on work I posted on [1]. In addition to what was posted on [1], this patch series mainly integrates Fixed point FFT implementations in NE10 library into opus. You can view my opus wip code at [2]. Note that while I found some issues both with the NE10 library(fixed fft) and with Linaro toolchain (armv8 intrinsics), the work