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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 30000
#define MAX_AUDIO_STREAMS 8
#define ALSA_PLUG_PROTO(plugin) \
int _snd_pcm_ ## plugin ## _open(snd_pcm_t **pcmp, const char *name, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode)
// alsa-utils-bypath.c
typedef struct {
const char *devpath;
const char *devid;
int device;
int subdev;
int numid;
int cardid;
snd_pcm_t *handle;
} AlsaPcmInfoT;
typedef struct {
unsigned int rate;
unsigned int channels;
snd_pcm_format_t format;
snd_pcm_access_t access;
size_t sampleSize;
} AlsaPcmHwInfoT;
PUBLIC snd_ctl_card_info_t* AlsaByPathInfo (CtlSourceT *source, const char *control);
PUBLIC AlsaPcmInfoT* AlsaByPathOpenPcm(CtlSourceT *source, AlsaPcmInfoT *dev, snd_pcm_stream_t direction);
PUBLIC snd_ctl_t *AlsaByPathOpenCtl (CtlSourceT *source, AlsaPcmInfoT *dev);
PUBLIC int AlsaByPathDevid (CtlSourceT *source, AlsaPcmInfoT *dev);
// alsa-utils-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 ALSA_PCM_UID(pcmHandle, buffer) AlsaDumpPcmUid(pcmHandle, buffer, sizeof(buffer))
PUBLIC char *AlsaDumpCtlUid(snd_ctl_t *ctlHandle, char *buffer, size_t len);
#define ALSA_CTL_UID(ctlHandle, buffer) AlsaDumpCtlUid(ctlHandle, buffer, sizeof(buffer))
// alsa-core-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, AlsaPcmInfoT *pcm, int numid);
PUBLIC int AlsaCtlGetNumidValueI(CtlSourceT *source, snd_ctl_t* ctlDev, int numid, long* value);
PUBLIC int AlsaPcmConf(CtlSourceT *source, AlsaPcmInfoT *pcm, AlsaPcmHwInfoT *opts);
PUBLIC int AlsaPcmCopy(CtlSourceT *source, AlsaPcmInfoT *pcmIn, AlsaPcmInfoT *pcmOut, AlsaPcmHwInfoT *opts);
// _snd_pcm_PLUGIN_open_ see macro ALSA_PLUG_PROTO(plugin)
PUBLIC AlsaPcmInfoT* AlsaCreateDmix(CtlSourceT *source, const char* pcmName, AlsaPcmInfoT *pcmSlave);
PUBLIC AlsaPcmInfoT* AlsaCreateVol(CtlSourceT *source, const char *pcmName, AlsaPcmInfoT* ctlTarget, AlsaPcmInfoT* pcmSlave);
#endif
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