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/*
* Copyright (C) 2018 "IoT.bzh"
* Author Fulup Ar Foll <fulup@iot.bzh>
*
* Licensed 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.
*
*/
#define _GNU_SOURCE // needed for vasprintf
#ifndef _ALSA_SOFTMIXER_
#define _ALSA_SOFTMIXER_
#include <afb/afb-binding.h>
#include <systemd/sd-event.h>
#include <json-c/json_object.h>
#include <stdio.h>
#include "ctl-plugin.h"
#include "wrap-json.h"
#include <alsa/asoundlib.h>
#define MAINLOOP_WATCHDOG 10000
#define MAX_AUDIO_STREAMS 8
// Provide proto for LibASound low level API
int _snd_pcm_dmix_open(snd_pcm_t **pcmp, const char *name,
snd_config_t *root, snd_config_t *conf,
snd_pcm_stream_t stream, int mode);
// alsa-ctl.c
PUBLIC snd_ctl_card_info_t *AlsaCtlGetInfo (CtlSourceT *source, const char *devid);
PUBLIC snd_ctl_t *AlsaCtlOpenCtl (CtlSourceT *source, const char *devid);
PUBLIC int AlsaCtlSubscribe(CtlSourceT *source, snd_ctl_t *ctlDev);
PUBLIC int AlsaCtlRegister(CtlSourceT *source, snd_pcm_t *pcm, int numid);
// alsa-tools-dump.c
PUBLIC void AlsaDumpFormats(CtlSourceT *source, snd_pcm_t *pcmHandle);
PUBLIC char *AlsaDumpPcmUid(snd_pcm_t *pcmHandle, char *buffer, size_t len);
PUBLIC void AlsaDumpCtlSubdev(CtlSourceT *source, snd_ctl_t *handle);
PUBLIC void AlsaDumpPcmInfo(CtlSourceT *source, snd_pcm_t *pcm, const char* info);
PUBLIC void AlsaDumpPcmParams(CtlSourceT *source, snd_pcm_hw_params_t *pcmHwParams);
PUBLIC void AlsaDumpCtlConfig(CtlSourceT *source, snd_config_t *config, int indent);
#define AlsaPcmUID(pcmHandle, buffer) AlsaDumpPcmUid(pcmHandle, buffer, sizeof(buffer))
PUBLIC char *AlsaDumpCtlUid(snd_ctl_t *ctlHandle, char *buffer, size_t len);
#define AlsaCtlUID(ctlHandle, buffer) AlsaDumpCtlUid(ctlHandle, buffer, sizeof(buffer))
// alsa-tools-bypath.c
typedef struct {
char *devpath;
char *devid;
int device;
int subdev;
int numid;
} AlsaDevByPathT;
PUBLIC snd_ctl_card_info_t* AlsaByPathInfo (CtlSourceT *source, const char *control);
PUBLIC snd_pcm_t* AlsaByPathOpenPcm(CtlSourceT *source, AlsaDevByPathT *dev, snd_pcm_stream_t direction);
PUBLIC snd_ctl_t *AlsaByPathOpenCtl (CtlSourceT *source, AlsaDevByPathT *dev);
#define ALSA_PCM_DEFAULT_FORMAT (unsigned int)-99
#define ALSA_PCM_DEFAULT_ACCESS (snd_pcm_access_t)-99
#define ALSA_PCM_DEFAULT_RATE (snd_pcm_format_t)-99
#define ALSA_PCM_DEFAULT_CHANNELS (unsigned int)-99
// alsa-pcm.c
typedef struct {
snd_pcm_format_t format;
unsigned int channels;
size_t sampleSize;
unsigned int rate;
} AlsaPcmHwInfoT;
PUBLIC void AlsaPcmSetDefault (snd_pcm_format_t format, snd_pcm_access_t access, unsigned int rate, unsigned int channel);
PUBLIC int AlsaPcmConf(CtlSourceT *source, snd_pcm_t *pcmHandle, snd_pcm_format_t pcmFormat, unsigned int pcmRate, unsigned int pcmChannels, AlsaPcmHwInfoT *pcmHwInfo);
PUBLIC int AlsaPcmCopy(CtlSourceT *source, snd_pcm_t *pcmIn, snd_pcm_t *pcmOut, snd_pcm_format_t format, snd_pcm_access_t access, unsigned int rate, unsigned int channel);
// alse-dmix.c
PUBLIC snd_pcm_t* AlsaCreateDmix(CtlSourceT *source, const char *dmixName, const char *slaveName);
PUBLIC snd_pcm_t* AlsaCreateCapture(CtlSourceT *source, const char* sndDevPath, unsigned int deviceIdx, unsigned int subdevIdx, unsigned int channelCount);
#endif
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