search for: resampler_basic_direct_single

...y > > platform) > > This is probable the cause. 1.2beta2 was the first release to > include the resampler and it had many bugs. I suggest trying > to get 1.2rc1 (or latest git) working. Hi, I found the problem preventing to use version >= 1.2beta3. After the patch for SSE, resampler_basic_direct_single() has been modified to use float instead of the generic spx_word16_t type... Anyway, float implementation is perfect, because handling saturation when converting back to int. After reconverting to spx_word16_t, the fixed point version is now good, except for saturation. Using MULT16_16 for convo...

Hi, *"That's in general not very reliable. You can get PEAQ to say all sorts of silly things." Can you provide me links for any more effective tools other than PEAQ? Which is more reliable for Speex resampler? * *"strongly suspect that it's just not compensating for the delay introduced by the resampler. Because higher quality means higher delay, you'd find that PEAQ

...c | 8 ++++---- libspeex/resample_sse.h | 24 ++++++++---------------- 2 files changed, 12 insertions(+), 20 deletions(-) diff --git a/libspeex/resample.c b/libspeex/resample.c index 7b5a308..8131380 100644 --- a/libspeex/resample.c +++ b/libspeex/resample.c @@ -361,7 +361,7 @@ static int resampler_basic_direct_single(SpeexResamplerState *st, spx_uint32_t c sum = accum[0] + accum[1] + accum[2] + accum[3]; */ #else - sum = inner_product_single(sinc, iptr, N); + inner_product_single(&sum, sinc, iptr, N); #endif out[out_stride * out_sample++] = SATURATE32(PSHR32(sum, 15), 32767); @@...

...0 @@ static void speex_free (void *ptr) {free(ptr);} #include "resample_sse.h" #endif +#ifdef _USE_NEON +#include "resample_neon.h" +#endif + /* Numer of elements to allocate on the stack */ #ifdef VAR_ARRAYS #define FIXED_STACK_ALLOC 8192 @@ -360,11 +364,12 @@ static int resampler_basic_direct_single(SpeexResamplerState *st, spx_uint32_t c } sum = accum[0] + accum[1] + accum[2] + accum[3]; */ + sum = SATURATE32PSHR(sum, 15, 32767); #else sum = inner_product_single(sinc, iptr, N); #endif - out[out_stride * out_sample++] = SATURATE32(PSHR32(sum, 15), 32767); +...

From: Jyri Sarha <jsarha at ti.com> I optimized Speex resampler for NEON capable ARM CPUs. The first patch should speed up resampling on any platform that can spare the increased memory usage. It would be nice to have these merged to the master branch. Please let me know if there is anything I can do to help the the merge. The patches have been rebased on top of master branch in

...nt32_t *); struct SpeexResamplerState_ { @@ -109,6 +117,7 @@ spx_uint32_t nb_channels; spx_uint32_t filt_len; spx_uint32_t mem_alloc_size; + spx_uint32_t buffer_size; int int_advance; int frac_advance; float cutoff; @@ -317,47 +326,47 @@ static int resampler_basic_direct_single(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len) { - int N = st->filt_len; + const int N = st->filt_len; int out_sample = 0; - spx_word16_t *mem; int last_sample = st->last_sample[cha...

...nt32_t *); struct SpeexResamplerState_ { @@ -109,6 +117,7 @@ spx_uint32_t nb_channels; spx_uint32_t filt_len; spx_uint32_t mem_alloc_size; + spx_uint32_t buffer_size; int int_advance; int frac_advance; float cutoff; @@ -317,47 +326,47 @@ static int resampler_basic_direct_single(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len) { - int N = st->filt_len; + const int N = st->filt_len; int out_sample = 0; - spx_word16_t *mem; int last_sample = st->last_sample[cha...