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/*
* Copyright (C) 2017 "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
#include "alsa-softmixer.h"
// Force Lua2cWrapper inclusion within already existing plugin
CTLP_LUA_REGISTER("alsa-mixer")
// Call at initialisation time
CTLP_ONLOAD(plugin, callbacks) {
AFB_ApiDebug (plugin->api, "SoftMixer plugin: uid='%s' 'info='%s'", plugin->uid, plugin->info);
return NULL;
}
CTLP_LUA2C(AlsaRouter, source, argsJ, responseJ) {
json_object *devInJ, *devOutJ, *paramsJ=NULL;
AlsaDevByPathT devIn, devOut;
int err;
// init default values
memset(&devIn,0,sizeof(AlsaDevByPathT));
memset(&devOut,0,sizeof(AlsaDevByPathT));
int rate=ALSA_PCM_DEFAULT_RATE;
int channels=ALSA_PCM_DEFAULT_CHANNELS;
snd_pcm_format_t format=ALSA_PCM_DEFAULT_FORMAT;
snd_pcm_access_t access=ALSA_PCM_DEFAULT_ACCESS;
err= wrap_json_unpack(argsJ, "{s:o,s:o,s?o}", "devin", &devInJ, "devout", &devOutJ, "params", ¶msJ);
if (err) {
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter ARGS missing devIn|devOut args=%s", json_object_get_string(argsJ));
goto OnErrorExit;
}
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter **** PARAMS missing 'format|access|rate|channels' params=%s", json_object_get_string(paramsJ));
err= wrap_json_unpack(devInJ, "{s?s,s?s,s?i,s?i}", "path", &devIn.devpath, "id",&devIn.devid,"numid",&devIn.numid,"dev", &devIn.device, "sub", &devIn.subdev);
if (err || (!devIn.devpath && !devIn.devid)) {
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter DEV-IN missing 'path|id|dev|sub|numid' devin=%s", json_object_get_string(devInJ));
goto OnErrorExit;
}
err= wrap_json_unpack(devOutJ, "{s?s,s?s,s?i, s?i,s?i}", "path", &devOut.devpath, "id", &devOut.device, "sub", &devOut.subdev);
if (err || (!devOut.devpath && !devOut.devid)) {
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter DEV-OUT missing 'path|id|dev|sub' devout=%s", json_object_get_string(devOutJ));
goto OnErrorExit;
}
if (paramsJ) if ((err= wrap_json_unpack(paramsJ, "{s?i, s?i, s?i, s?i}", "format", &format, "access", &access, "rate", &rate, "channels",&channels)) != 0) {
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter PARAMS missing 'format|access|rate|channels' params=%s", json_object_get_string(paramsJ));
goto OnErrorExit;
}
AFB_ApiNotice(source->api, "--lua2c-- AlsaRouter devIn=%s devOut=%s rate=%d channel=%d", devIn.devpath, devOut.devpath, rate, channels);
// open PCM and start frame copy from binder Mainloop
snd_pcm_t* pcmIn = AlsaByPathOpenPcm(source, &devIn, SND_PCM_STREAM_CAPTURE);
snd_pcm_t* pcmOut = AlsaByPathOpenPcm(source, &devOut, SND_PCM_STREAM_PLAYBACK);
err = AlsaPcmCopy(source, pcmIn, pcmOut, format, access, (unsigned int)rate, (unsigned int)channels);
if(err) goto OnErrorExit;
// Registration to event should be done after pcm_start
if (devIn.numid) {
err= AlsaCtlRegister(source, pcmIn, devIn.numid);
if(err) goto OnErrorExit;
}
return 0;
OnErrorExit:
return -1;
}
CTLP_LUA2C(AlsaDmix, source, argsJ, responseJ) {
json_object* subscribeArgsJ = NULL;
int err = 0;
wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
AFB_ApiNotice(source->api, "lua2c router with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
return err;
}
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