| /* Copyright 2019 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef CRAS_FMT_CONV_OPS_H_ |
| #define CRAS_FMT_CONV_OPS_H_ |
| |
| #include <sys/types.h> |
| #include "cras_audio_format.h" |
| |
| /* |
| * Format converter. |
| */ |
| void convert_u8_to_s16le(const uint8_t *in, size_t in_samples, uint8_t *out); |
| void convert_s243le_to_s16le(const uint8_t *in, size_t in_samples, |
| uint8_t *out); |
| void convert_s24le_to_s16le(const uint8_t *in, size_t in_samples, uint8_t *out); |
| void convert_s32le_to_s16le(const uint8_t *in, size_t in_samples, uint8_t *out); |
| void convert_s16le_to_u8(const uint8_t *in, size_t in_samples, uint8_t *out); |
| void convert_s16le_to_s243le(const uint8_t *in, size_t in_samples, |
| uint8_t *out); |
| void convert_s16le_to_s24le(const uint8_t *in, size_t in_samples, uint8_t *out); |
| void convert_s16le_to_s32le(const uint8_t *in, size_t in_samples, uint8_t *out); |
| |
| /* |
| * Channel converter: mono to stereo. |
| */ |
| size_t s16_mono_to_stereo(const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: stereo to mono. |
| */ |
| size_t s16_stereo_to_mono(const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: mono to 5.1 surround. |
| */ |
| size_t s16_mono_to_51(size_t left, size_t right, size_t center, |
| const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: stereo to 5.1 surround. |
| */ |
| size_t s16_stereo_to_51(size_t left, size_t right, size_t center, |
| const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: quad to 5.1 surround. |
| */ |
| size_t s16_quad_to_51(size_t font_left, size_t front_right, size_t rear_left, |
| size_t rear_right, const uint8_t *in, size_t in_frames, |
| uint8_t *out); |
| |
| /* |
| * Channel converter: 5.1 surround to stereo. |
| */ |
| size_t s16_51_to_stereo(const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: 5.1 surround to quad. |
| */ |
| size_t s16_51_to_quad(const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: stereo to quad (front L/R, rear L/R). |
| */ |
| size_t s16_stereo_to_quad(size_t front_left, size_t front_right, |
| size_t rear_left, size_t rear_right, |
| const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: quad (front L/R, rear L/R) to stereo. |
| */ |
| size_t s16_quad_to_stereo(size_t front_left, size_t front_right, |
| size_t rear_left, size_t rear_right, |
| const uint8_t *in, size_t in_frames, uint8_t *out); |
| |
| /* |
| * Channel converter: N channels to M channels. |
| */ |
| size_t s16_default_all_to_all(struct cras_audio_format *out_fmt, |
| size_t num_in_ch, size_t num_out_ch, |
| const uint8_t *in, size_t in_frames, |
| uint8_t *out); |
| |
| /* |
| * Channel converter: N channels to M channels filling min(N,M) channels by |
| * directly copying to the destination. |
| */ |
| size_t s16_some_to_some(const struct cras_audio_format *out_fmt, |
| const size_t num_in_ch, const size_t num_out_ch, |
| const uint8_t *_in, const size_t frame_count, |
| uint8_t *_out); |
| |
| /* |
| * Multiplies buffer vector with coefficient vector. |
| */ |
| int16_t s16_multiply_buf_with_coef(float *coef, const int16_t *buf, |
| size_t size); |
| |
| /* |
| * Channel layout converter. |
| */ |
| size_t s16_convert_channels(float **ch_conv_mtx, size_t num_in_ch, |
| size_t num_out_ch, const uint8_t *in, |
| size_t in_frames, uint8_t *out); |
| |
| #endif /* CRAS_FMT_CONV_OPS_H_ */ |