58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
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/*
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* Copyright © 2017 Intel Corporation
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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 DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
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*/
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#ifndef IGT_AUDIO_H
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#define IGT_AUDIO_H
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#include "config.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include <alsa/asoundlib.h>
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struct audio_signal;
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struct audio_signal *audio_signal_init(int channels, int sampling_rate);
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void audio_signal_fini(struct audio_signal *signal);
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int audio_signal_add_frequency(struct audio_signal *signal, int frequency,
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int channel);
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void audio_signal_synthesize(struct audio_signal *signal);
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void audio_signal_reset(struct audio_signal *signal);
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void audio_signal_fill(struct audio_signal *signal, double *buffer,
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size_t samples);
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bool audio_signal_detect(struct audio_signal *signal, int sampling_rate,
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int channel, const double *samples, size_t samples_len);
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size_t audio_extract_channel_s32_le(double *dst, size_t dst_cap,
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int32_t *src, size_t src_len,
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int n_channels, int channel);
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void audio_convert_to(void *dst, double *src, size_t len,
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snd_pcm_format_t format);
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int audio_create_wav_file_s32_le(const char *qualifier, uint32_t sample_rate,
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uint16_t channels, char **path);
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#endif
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