From 17edfc4c20cfd855d68e5b0ef044da2e7509f3f3 Mon Sep 17 00:00:00 2001 From: Fulup Ar Foll Date: Mon, 30 Apr 2018 23:30:10 +0200 Subject: On going effort, now load and support LUA+C plugin --- plugins/alsa/alsa-dmix.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 plugins/alsa/alsa-dmix.c (limited to 'plugins/alsa/alsa-dmix.c') diff --git a/plugins/alsa/alsa-dmix.c b/plugins/alsa/alsa-dmix.c new file mode 100644 index 0000000..b162d04 --- /dev/null +++ b/plugins/alsa/alsa-dmix.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2018 "IoT.bzh" + * Author Fulup Ar Foll + * + * 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" + +static int uniqueIpcIndex = 1024; + + +PUBLIC int AlsaCreateDmix(CtlSourceT *source) { + + AFB_ApiNotice(source->api, "AlsaCreateDmix: start "); + + int cardid= AlsaCardInfoByPath ("/dev/snd/by-id/usb-Focusrite_Scarlett_18i8_USB_10004EE6-00"); + AFB_ApiNotice(source->api, "AlsaCreateDmix: cardid=%d ", cardid); + + snd_pcm_t *dmixPcm; + snd_config_t *dmixConfig, *slaveConfig, *elemConfig; + snd_pcm_stream_t streamPcm = SND_PCM_STREAM_PLAYBACK; + int error = 0, streamMode = SND_PCM_NONBLOCK; + + + error += snd_config_top(&dmixConfig); + error += snd_config_imake_integer(&elemConfig, "ipc_key", uniqueIpcIndex++); + error += snd_config_add(dmixConfig, elemConfig); + if (error) goto OnErrorExit; + + error += snd_config_make_compound(&slaveConfig, "slave", 0); + error += snd_config_imake_string(&elemConfig, "pcm", "hw:6"); + error += snd_config_add(slaveConfig, elemConfig); + if (error) goto OnErrorExit; + + // add leaf into config + error += snd_config_add(dmixConfig, slaveConfig); + if (error) goto OnErrorExit; + + snd_config_update(); + AlsaDumpConfig (source, snd_config, 1); + AlsaDumpConfig (source, dmixConfig, 1); + + + int status = _snd_pcm_dmix_open(&dmixPcm, "MyDMix", snd_config, dmixConfig, streamPcm , streamMode); + + AFB_ApiNotice(source->api, "AlsaCreateDmix: done"); + + return status; + +OnErrorExit: + AFB_ApiNotice(source->api, "AlsaCreateDmix: OnErrorExit"); + return 1; +} \ No newline at end of file -- cgit 1.2.3-korg