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2912d2506f
Also emit port info the the merger monitor ports. Proxy params and buffers to the right monitor ports. fmtconvert does not always have dsp ports Increase resampler output buffer sizes so that we can up and downsample. Fix little off by one in native resampler. Fix passthrough in speex resampler.
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* Spa
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*
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* Copyright © 2018 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <speex/speex_resampler.h>
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static void impl_speex_free(struct resample *r)
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{
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if (r->data)
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speex_resampler_destroy(r->data);
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r->data = NULL;
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}
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static void impl_speex_update_rate(struct resample *r, double rate)
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{
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r->rate = rate;
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speex_resampler_set_rate_frac(r->data,
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r->i_rate / rate, r->o_rate, r->i_rate, r->o_rate);
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}
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static void impl_speex_process(struct resample *r,
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const void *SPA_RESTRICT src[], uint32_t *in_len,
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void * SPA_RESTRICT dst[], uint32_t *out_len)
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{
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uint32_t c, i, o;
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if (r->i_rate == r->o_rate && r->rate == 1.0) {
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o = i = SPA_MIN(*in_len, *out_len);
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for (c = 0; c < r->channels; c++)
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spa_memcpy(dst[c], src[c], o * sizeof(float));
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}
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else {
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for (c = 0; c < r->channels; c++) {
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i = *in_len;
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o = *out_len;
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speex_resampler_process_float(r->data, c, src[c], &i, dst[c], &o);
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}
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}
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*in_len = i;
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*out_len = o;
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}
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static void impl_speex_reset (struct resample *r)
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{
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}
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static int impl_speex_init(struct resample *r)
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{
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int err;
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r->rate = 1.0;
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r->free = impl_speex_free;
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r->update_rate = impl_speex_update_rate;
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r->process = impl_speex_process;
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r->reset = impl_speex_reset;
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r->data = speex_resampler_init_frac(r->channels,
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r->i_rate, r->o_rate, r->i_rate, r->o_rate,
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SPEEX_RESAMPLER_QUALITY_DEFAULT, &err);
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if (r->data == NULL)
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return -ENOMEM;
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return 0;
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}
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