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54 lines
2.1 KiB
54 lines
2.1 KiB
/*
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Copyright Jeroen Vreeken (jeroen@vreeken.net), 2016
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _INCLUDE_SOUND_H_
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#define _INCLUDE_SOUND_H_
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#include <stdint.h>
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#include <poll.h>
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#include <stdbool.h>
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int sound_out(int16_t *samples, int nr, bool left, bool right);
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int sound_out_lr(int16_t *samples_l, int16_t *samples_r, int nr);
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int sound_silence(void);
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/* Returns hw_rate or negative error*/
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int sound_init(char *device,
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void (*in_cb)(int16_t *samples_l, int16_t *samples_r, int nr_l, int nr_r),
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int hw_rate, int force_channels_in, int force_channels_out);
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int sound_set_nr(int nr_set);
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int sound_poll_count_tx(void);
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int sound_poll_fill_tx(struct pollfd *fds, int count);
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bool sound_poll_out_tx(struct pollfd *fds, int count);
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int sound_poll_count_rx(void);
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int sound_poll_fill_rx(struct pollfd *fds, int count);
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bool sound_poll_in_rx(struct pollfd *fds, int count);
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int sound_rx(void);
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struct sound_resample;
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struct sound_resample *sound_resample_create(int rate_out, int rate_in);
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void sound_resample_destroy(struct sound_resample *sr);
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int sound_resample_perform(struct sound_resample *sr, int16_t *out, int16_t *in, int nr_out, int nr_in);
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int sound_resample_perform_gain_limit(struct sound_resample *sr, int16_t *out, int16_t *in, int nr_out, int nr_in, float gain);
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int sound_resample_nr_out(struct sound_resample *sr, int nr_in);
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int sound_resample_nr_in(struct sound_resample *sr, int nr_out);
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int sound_gain_limit(int16_t *samples, int nr, float gain, float *limit);
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int sound_gain(int16_t *samples, int nr, double gain);
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#endif /* _INCLUDE_SOUND_H_ */
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