diff options
Diffstat (limited to 'src/pulsecore/resampler.c')
-rw-r--r-- | src/pulsecore/resampler.c | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/src/pulsecore/resampler.c b/src/pulsecore/resampler.c index 45cd68c1..b2d512c8 100644 --- a/src/pulsecore/resampler.c +++ b/src/pulsecore/resampler.c @@ -716,7 +716,11 @@ static void calc_map_table(pa_resampler *r) { * channels for LFE. */ for (ic = 0; ic < r->i_ss.channels; ic++) { - r->map_table[oc][ic] = 1.0f / (float) r->i_ss.channels; + + if (!(r->flags & PA_RESAMPLER_NO_LFE)) + r->map_table[oc][ic] = 1.0f / (float) r->i_ss.channels; + else + r->map_table[oc][ic] = 0; /* Please note that a channel connected to LFE * doesn't really count as connected. */ @@ -851,7 +855,7 @@ static void calc_map_table(pa_resampler *r) { } } - if (ic_unconnected_lfe > 0) { + if (ic_unconnected_lfe > 0 && !(r->flags & PA_RESAMPLER_NO_LFE)) { /* OK, so there is an unconnected LFE channel. Let's mix * it into all channels, with factor 0.375 */ @@ -1414,40 +1418,46 @@ static void peaks_resample(pa_resampler *r, const pa_memchunk *input, unsigned i unsigned j; j = ((r->peaks.o_counter * r->i_ss.rate) / r->o_ss.rate); - j = j > r->peaks.i_counter ? j - r->peaks.i_counter : 0; - if (j >= in_n_frames) - break; + if (j > r->peaks.i_counter) + j -= r->peaks.i_counter; + else + j = 0; pa_assert(o_index * fz < pa_memblock_get_length(output->memblock)); if (r->work_format == PA_SAMPLE_S16NE) { unsigned i, c; - int16_t *s = (int16_t*) ((uint8_t*) src + fz * j); + int16_t *s = (int16_t*) ((uint8_t*) src + fz * start); int16_t *d = (int16_t*) ((uint8_t*) dst + fz * o_index); - for (i = start; i <= j; i++) + for (i = start; i <= j && i < in_n_frames; i++) + for (c = 0; c < r->o_ss.channels; c++, s++) { int16_t n; n = (int16_t) (*s < 0 ? -*s : *s); - if (n > r->peaks.max_i[c]) + if (PA_UNLIKELY(n > r->peaks.max_i[c])) r->peaks.max_i[c] = n; } + if (i >= in_n_frames) + break; + for (c = 0; c < r->o_ss.channels; c++, d++) { - *d = r->peaks.max_i[c]; - r->peaks.max_i[c] = 0; + *d = r->peaks.max_i[c]; + r->peaks.max_i[c] = 0; } + } else { unsigned i, c; - float *s = (float*) ((uint8_t*) src + fz * j); + float *s = (float*) ((uint8_t*) src + fz * start); float *d = (float*) ((uint8_t*) dst + fz * o_index); pa_assert(r->work_format == PA_SAMPLE_FLOAT32NE); - for (i = start; i <= j; i++) + for (i = start; i <= j && i < in_n_frames; i++) for (c = 0; c < r->o_ss.channels; c++, s++) { float n = fabsf(*s); @@ -1455,13 +1465,16 @@ static void peaks_resample(pa_resampler *r, const pa_memchunk *input, unsigned i r->peaks.max_f[c] = n; } + if (i >= in_n_frames) + break; + for (c = 0; c < r->o_ss.channels; c++, d++) { *d = r->peaks.max_f[c]; r->peaks.max_f[c] = 0; } } - start = j+1; + start = j; } pa_memblock_release(input->memblock); |