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0d1cef6b3a
To make it easier to add other implementations later. Improve selection of resampler function
65 lines
2.3 KiB
C
65 lines
2.3 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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#ifndef RESAMPLE_H
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#define RESAMPLE_H
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#include <spa/support/cpu.h>
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#include <spa/support/log.h>
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#define RESAMPLE_DEFAULT_QUALITY 4
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struct resample {
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uint32_t cpu_flags;
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uint32_t channels;
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uint32_t i_rate;
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uint32_t o_rate;
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struct spa_log *log;
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double rate;
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int quality;
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void (*free) (struct resample *r);
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void (*update_rate) (struct resample *r, double rate);
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uint32_t (*in_len) (struct resample *r, uint32_t out_len);
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uint32_t (*out_len) (struct resample *r, uint32_t in_len);
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void (*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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void (*reset) (struct resample *r);
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uint32_t (*delay) (struct resample *r);
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void *data;
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};
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#define resample_free(r) (r)->free(r)
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#define resample_update_rate(r,...) (r)->update_rate(r,__VA_ARGS__)
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#define resample_in_len(r,...) (r)->in_len(r,__VA_ARGS__)
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#define resample_out_len(r,...) (r)->out_len(r,__VA_ARGS__)
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#define resample_process(r,...) (r)->process(r,__VA_ARGS__)
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#define resample_reset(r) (r)->reset(r)
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#define resample_delay(r) (r)->delay(r)
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int resample_native_init(struct resample *r);
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int resample_peaks_init(struct resample *r);
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#endif /* RESAMPLE_H */
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