* apps/audioutils/alsa-lib/channels_map.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __APPS_AUDIOUTILS_ALSA_LIB_CHANNELS_MAP_H
#define __APPS_AUDIOUTILS_ALSA_LIB_CHANNELS_MAP_H
* Included Files
****************************************************************************/
#include <alsa/pcm.h>
* Public Types
****************************************************************************/
struct chmap_data
{
FAR void *chmap_buf;
size_t buf_size;
snd_pcm_format_t format;
unsigned int src_channels;
unsigned int dst_channels;
};
* Public Function Prototypes
****************************************************************************/
int chmap_init(FAR struct chmap_data **cm, snd_pcm_format_t format,
unsigned int src_channels, unsigned int dst_channels,
size_t buf_size);
int chmap_process(FAR struct chmap_data *cm, FAR const void *in_data,
snd_pcm_uframes_t in_frames, FAR void **out_data,
FAR snd_pcm_uframes_t *out_frames);
void chmap_release(FAR struct chmap_data *cm);
#endif