talksik
30 lines
808 B
C
30 lines
808 B
C
#ifndef AUDIOCAPTURE_H
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#define AUDIOCAPTURE_H
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <alsa/asoundlib.h>
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#include <alsa/control.h>
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#include <alsa/pcm.h>
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// NOTE: find this via `arecord -l`
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#define ALSA_MIC_HARDWARE_DEVICE "hw:3"
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#define ALSA_SPEAKER_HARDWARE_DEVICE "default"
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// Captures audio for given seconds, and returns file name that we captured the
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// audio into
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char *audio_capture(uint seconds);
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/* count: how many bytes in the buffer
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* returns int: 0 if success, -1 if failure
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* NOTE: This function assumes that the audio data is using:
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* - linear16 formatting (each sample is 16 bits)
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* - one channel (1 sample)
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* - with 48000 HZ sampling rate
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* Hence, it's 2 bytes per frame.
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*/
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int audio_play(char *buf, size_t byte_count);
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#endif // AUDIOCAPTURE_H
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