diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/modules/module-equalizer-sink.c | 186 |
1 files changed, 90 insertions, 96 deletions
diff --git a/src/modules/module-equalizer-sink.c b/src/modules/module-equalizer-sink.c index f5c1fb70..814a00fa 100755 --- a/src/modules/module-equalizer-sink.c +++ b/src/modules/module-equalizer-sink.c @@ -337,7 +337,7 @@ static void sink_set_mute_cb(pa_sink *s) { pa_sink_input_set_mute(u->sink_input, s->muted, s->save_muted); } - +#ifndef __SSE2__ //reference implementation static void dsp_logic( float * restrict dst,//used as a temp array too, needs to be fft_length! @@ -351,12 +351,12 @@ static void dsp_logic( fftwf_complex * restrict output_window,//The transformed window'd src struct userdata *u){ //use a linear-phase sliding STFT and overlap-add method (for each channel) - //zero padd the data - memset(dst + u->window_size, 0, (u->fft_size - u->window_size) * sizeof(float)); //window the data for(size_t j = 0; j < u->window_size; ++j){ dst[j] = X * W[j] * src[j]; } + //zero padd the the remaining fft window + memset(dst + u->window_size, 0, (u->fft_size - u->window_size) * sizeof(float)); //Processing is done here! //do fft fftwf_execute_dft_r2c(u->forward_plan, dst, output_window); @@ -390,112 +390,104 @@ static void dsp_logic( (u->samples_gathered - u->R) * sizeof(float) ); } - +#else typedef float v4sf __attribute__ ((__aligned__(v_size * sizeof(float)))); typedef union float_vector { float f[v_size]; v4sf v; -#ifdef __SSE2__ __m128 m; -#endif } float_vector_t; -////regardless of sse enabled, the loops in here assume -////16 byte aligned addresses and memory allocations divisible by v_size -//void dsp_logic( -// float * restrict dst,//used as a temp array too, needs to be fft_length! -// float * restrict src,/*input data w/ overlap at start, -// *automatically cycled in routine -// */ -// float * restrict overlap,//The size of the overlap -// const float X,//multipliar -// const float * restrict H,//The freq. magnitude scalers filter -// const float * restrict W,//The windowing function -// fftwf_complex * restrict output_window,//The transformed window'd src -// struct userdata *u){//Collection of constants - //float_vector_t x = {X, X, X, X}; -// const size_t window_size = PA_ROUND_UP(u->window_size,v_size); -// const size_t fft_h = PA_ROUND_UP(FILTER_SIZE, v_size / 2); -// //const size_t R = PA_ROUND_UP(u->R, v_size); -// const size_t overlap_size = PA_ROUND_UP(u->overlap_size, v_size); -// overlap_size = PA_ROUND_UP(u->overlap_size, v_size); -// -// //assert(u->samples_gathered >= u->R); -// //zero out the bit beyond the real overlap so we don't add garbage -// for(size_t j = overlap_size; j > u->overlap_size; --j){ -// overlap[j-1] = 0; -// } -// //use a linear-phase sliding STFT and overlap-add method -// //zero padd the data -// memset(dst + u->window_size, 0, (u->fft_size - u->window_size)*sizeof(float)); -// //window the data -// for(size_t j = 0; j < window_size; j += v_size){ -// //dst[j] = W[j]*src[j]; -// float_vector_t *d = (float_vector_t*) (dst+j); -// float_vector_t *w = (float_vector_t*) (W+j); -// float_vector_t *s = (float_vector_t*) (src+j); +//regardless of sse enabled, the loops in here assume +//16 byte aligned addresses and memory allocations divisible by v_size +static void dsp_logic( + float * restrict dst,//used as a temp array too, needs to be fft_length! + float * restrict src,/*input data w/ overlap at start, + *automatically cycled in routine + */ + float * restrict overlap,//The size of the overlap + const float X,//multipliar + const float * restrict H,//The freq. magnitude scalers filter + const float * restrict W,//The windowing function + fftwf_complex * restrict output_window,//The transformed window'd src + struct userdata *u){//Collection of constants + const size_t overlap_size = PA_ROUND_UP(u->overlap_size, v_size); + + + //assert(u->samples_gathered >= u->R); + //use a linear-phase sliding STFT and overlap-add method + for(size_t j = 0; j < u->window_size; j += v_size){ + //dst[j] = W[j] * src[j]; + float_vector_t *d = (float_vector_t*) (dst + j); + float_vector_t *w = (float_vector_t*) (W + j); + float_vector_t *s = (float_vector_t*) (src + j); //#if __SSE2__ -// d->m = _mm_mul_ps(x->m, _mm_mul_ps(w->m, s->m)); + d->m = _mm_mul_ps(w->m, s->m); //#else -// d->v = x->v * w->v * s->v; +// d->v = w->v * s->v; //#endif -// } -// //Processing is done here! -// //do fft -// fftwf_execute_dft_r2c(u->forward_plan, dst, output_window); -// -// -// //perform filtering - purely magnitude based -// for(size_t j = 0;j < fft_h; j+=v_size/2){ -// //output_window[j][0]*=H[j]; -// //output_window[j][1]*=H[j]; -// float_vector_t *d = (float_vector_t*)(output_window+j); -// float_vector_t h; -// h.f[0] = h.f[1] = H[j]; -// h.f[2] = h.f[3] = H[j+1]; + } + //zero padd the the remaining fft window + memset(dst + u->window_size, 0, (u->fft_size - u->window_size) * sizeof(float)); + + //Processing is done here! + //do fft + fftwf_execute_dft_r2c(u->forward_plan, dst, output_window); + //perform filtering - purely magnitude based + for(size_t j = 0; j < FILTER_SIZE; j += v_size / 2){ + //output_window[j][0]*=H[j]; + //output_window[j][1]*=H[j]; + float_vector_t *d = (float_vector_t*)( ((float *) output_window) + 2 * j); + float_vector_t h; + h.f[0] = h.f[1] = H[j]; + h.f[2] = h.f[3] = H[j + 1]; //#if __SSE2__ -// d->m = _mm_mul_ps(d->m, h.m); + d->m = _mm_mul_ps(d->m, h.m); //#else -// d->v = d->v*h->v; +// d->v = d->v * h.v; //#endif -// } -// //inverse fft -// fftwf_execute_dft_c2r(u->inverse_plan, output_window, dst); -// -// ////debug: tests overlaping add -// ////and negates ALL PREVIOUS processing -// ////yields a perfect reconstruction if COLA is held -// //for(size_t j = 0; j < u->window_size; ++j){ -// // dst[j] = W[j]*src[j]; -// //} -// -// //overlap add and preserve overlap component from this window (linear phase) -// for(size_t j = 0; j < overlap_size; j+=v_size){ -// //dst[j]+=overlap[j]; -// //overlap[j]+=dst[j+R]; -// float_vector_t *d = (float_vector_t*)(dst+j); -// float_vector_t *o = (float_vector_t*)(overlap+j); + } + + //inverse fft + fftwf_execute_dft_c2r(u->inverse_plan, output_window, dst); + + ////debug: tests overlaping add + ////and negates ALL PREVIOUS processing + ////yields a perfect reconstruction if COLA is held + //for(size_t j = 0; j < u->window_size; ++j){ + // dst[j] = W[j] * src[j]; + //} + + //overlap add and preserve overlap component from this window (linear phase) + for(size_t j = 0; j < overlap_size; j += v_size){ + //dst[j]+=overlap[j]; + //overlap[j]+=dst[j+R]; + float_vector_t *d = (float_vector_t*)(dst + j); + float_vector_t *o = (float_vector_t*)(overlap + j); //#if __SSE2__ -// d->m = _mm_add_ps(d->m, o->m); -// o->m = ((float_vector_t*)(dst+u->R+j))->m; + d->m = _mm_add_ps(d->m, o->m); + o->m = ((float_vector_t*)(dst + u->R + j))->m; //#else -// d->v = d->v+o->v; -// o->v = ((float_vector_t*)(dst+u->R+j))->v; +// d->v = d->v + o->v; +// o->v = ((float_vector_t*)(dst + u->R + j))->v; //#endif -// } -// //memcpy(overlap, dst+u->R, u->overlap_size*sizeof(float)); -// -// //////debug: tests if basic buffering works -// //////shouldn't modify the signal AT ALL (beyond roundoff) -// //for(size_t j = 0; j < u->window_size; ++j){ -// // dst[j] = src[j]; -// //} -// -// //preseve the needed input for the next window's overlap -// memmove(src, src + u->R, -// u->overlap_size * sizeof(float) -// ); -//} + } + //memcpy(overlap, dst+u->R, u->overlap_size * sizeof(float)); //overlap preserve (debug) + //zero out the bit beyond the real overlap so we don't add garbage next iteration + memset(overlap + u->overlap_size, 0, overlap_size - u->overlap_size); + + ////debug: tests if basic buffering works + ////shouldn't modify the signal AT ALL (beyond roundoff) + //for(size_t j = 0; j < u->window_size; ++j){ + // dst[j] = src[j]; + //} + + //preseve the needed input for the next window's overlap + memmove(src, src + u->R, + (u->samples_gathered - u->R) * sizeof(float) + ); +} +#endif static void process_samples(struct userdata *u, pa_memchunk *tchunk){ size_t fs = pa_frame_size(&(u->sink->sample_spec)); @@ -685,7 +677,7 @@ static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) { //invalidate the output q pa_memblockq_seek(u->input_q, - (int64_t) amount, PA_SEEK_RELATIVE, TRUE); pa_log("Resetting filter"); - reset_filter(u); + //reset_filter(u); //this is the "proper" thing to do... } } @@ -1064,9 +1056,12 @@ int pa__init(pa_module*m) { pa_modargs_get_value_boolean(ma, "set_default", &u->set_default); u->channels = ss.channels; - u->fft_size = pow(2, ceil(log(ss.rate)/log(2)));//probably unstable near corner cases of powers of 2 + u->fft_size = pow(2, ceil(log(ss.rate) / log(2)));//probably unstable near corner cases of powers of 2 pa_log_debug("fft size: %ld", u->fft_size); u->window_size = 15999; + if(u->window_size % 2 == 0){ + u->window_size--; + } u->R = (u->window_size + 1) / 2; u->overlap_size = u->window_size - u->R; u->samples_gathered = 0; @@ -1090,7 +1085,6 @@ int pa__init(pa_module*m) { u->a_H[c] = pa_aupdate_new(); u->input[c] = NULL; u->overlap_accum[c] = alloc(u->overlap_size, sizeof(float)); - memset(u->overlap_accum[c], 0, u->overlap_size*sizeof(float)); } u->output_window = alloc((FILTER_SIZE), sizeof(fftwf_complex)); u->forward_plan = fftwf_plan_dft_r2c_1d(u->fft_size, u->work_buffer, u->output_window, FFTW_ESTIMATE); |