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/* Copyright (c) 2012 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_MIX_OPS_H_
#define CRAS_MIX_OPS_H_
#include <stdint.h>
#include "cras_system_state.h"
extern const struct cras_mix_ops mixer_ops;
extern const struct cras_mix_ops mixer_ops_sse42;
extern const struct cras_mix_ops mixer_ops_avx;
extern const struct cras_mix_ops mixer_ops_avx2;
extern const struct cras_mix_ops mixer_ops_fma;
/* Struct containing ops to implement mix/scale on a buffer of samples.
* Different architecture can provide different implementations and wraps
* the implementations into cras_mix_ops.
* Different sample formats will be handled by different implementations.
* The usage of each operation is explained in cras_mix.h
*
* Members:
* scale_buffer_increment: See cras_scale_buffer_increment.
* scale_buffer: See cras_scale_buffer.
* add: See cras_mix_add.
* add_scale_stride: See cras_mix_add_scale_stride.
* mute_buffer: cras_mix_mute_buffer.
*/
struct cras_mix_ops {
void (*scale_buffer_increment)(snd_pcm_format_t fmt, uint8_t *buff,
unsigned int count, float scaler,
float increment, float target, int step);
void (*scale_buffer)(snd_pcm_format_t fmt, uint8_t *buff,
unsigned int count, float scaler);
void (*add)(snd_pcm_format_t fmt, uint8_t *dst, uint8_t *src,
unsigned int count, unsigned int index, int mute,
float mix_vol);
void (*add_scale_stride)(snd_pcm_format_t fmt, uint8_t *dst,
uint8_t *src, unsigned int count,
unsigned int dst_stride,
unsigned int src_stride, float scaler);
size_t (*mute_buffer)(uint8_t *dst, size_t frame_bytes, size_t count);
};
#endif
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