search for: last_sample

...ic 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[channel_index]; spx_uint32_t samp_frac_num = st->samp_frac_num[channel_index]; - mem = st->mem + channel_index * st->mem_alloc_size; + const spx_word16_t *sinc_table = st->sinc_table; + const int out_stride = st->out_stride; + const int int_advance =...

...ic 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[channel_index]; spx_uint32_t samp_frac_num = st->samp_frac_num[channel_index]; - mem = st->mem + channel_index * st->mem_alloc_size; + const spx_word16_t *sinc_table = st->sinc_table; + const int out_stride = st->out_stride; + const int int_advance =...

...to fix the problem: EXPORT int speex_resampler_reset_mem(SpeexResamplerState *st) { spx_uint32_t i; for (i=0;i<st->nb_channels*(st->filt_len-1);i++) st->mem[i] = 0; // added bugfix below: st->started = 0; for (i=0;i<st->nb_channels;i++) { st->last_sample[i] = 0; st->magic_samples[i] = 0; st->samp_frac_num[i] = 0; } return RESAMPLER_ERR_SUCCESS; } Note that I have to call speex_resampler_skip_zeros() again after each reset call, whether or not I zero st->last_sample[i] or not. Also, I'm not 100% sure whether resett...

...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); + out[out_stride * out_sample++] = sum; last_sample += int_advance; samp_frac_num += frac_advance; if (samp_frac_num >= den_rate) @@ -470,12 +475,13 @@ static int resampler_basic_interpolate_single(SpeexResamplerState *st, spx_uint3 cubic_coef(frac, interp); sum = MULT16_32_Q15(interp[0],SHR32(accum[0], 1)) + MULT16_...

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

Hello, some misc. cleanup patches for speexdsp, nothing big I'm not sure about how to submit patches, so this is a test balloon :) ultimately, I'd like to fix the FIXED_POINT issue, see http://lists.xiph.org/pipermail/speex-dev/2013-December/008465.html currently, I think the only way to find out how speexdsp has been compiled is to resample some bytes and observe the output; which is