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-rw-r--r--HAL-afb/HAL-plugin/CMakeLists.txt55
-rw-r--r--HAL-afb/HAL-plugin/HalPlug.h92
-rw-r--r--HAL-afb/HAL-plugin/HalPlugCb.c64
-rw-r--r--HAL-afb/HAL-plugin/HalPlugCtl.c423
-rw-r--r--HAL-afb/HAL-plugin/README.md44
5 files changed, 0 insertions, 678 deletions
diff --git a/HAL-afb/HAL-plugin/CMakeLists.txt b/HAL-afb/HAL-plugin/CMakeLists.txt
deleted file mode 100644
index 93642b2..0000000
--- a/HAL-afb/HAL-plugin/CMakeLists.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-###########################################################################
-# Copyright 2015, 2016, 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.
-###########################################################################
-
-# Activate ALSA dynamic build build mode get resolve "snd_dlsym_start"
-add_compile_options(-DPIC)
-
-# Add target to project dependency list
-PROJECT_TARGET_ADD(ctl_afbhal)
-
- # Define targets
- ADD_LIBRARY(${TARGET_NAME} MODULE HalPlugCtl.c)
-
- # Alsa Plugin properties
- SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
- PREFIX "libasound_module_"
- OUTPUT_NAME ${TARGET_NAME}
- )
-
- # Library dependencies (include updates automatically)
- TARGET_LINK_LIBRARIES(${TARGET_NAME}
- ${link_libraries}
- )
- install(TARGETS ${TARGET_NAME} LIBRARY DESTINATION lib/alsa-lib)
-
-PROJECT_TARGET_ADD(cb_sample)
-
- # Define targets
- ADD_LIBRARY(${TARGET_NAME} MODULE HalPlugCb.c)
-
- # Alsa Plugin properties
- SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
- PREFIX "afbhal_"
- OUTPUT_NAME ${TARGET_NAME}
- )
-
- # Library dependencies (include updates automatically)
- TARGET_LINK_LIBRARIES(${TARGET_NAME}
- ${link_libraries}
- )
- install(TARGETS ${TARGET_NAME} LIBRARY DESTINATION lib)
diff --git a/HAL-afb/HAL-plugin/HalPlug.h b/HAL-afb/HAL-plugin/HalPlug.h
deleted file mode 100644
index 5e3da6f..0000000
--- a/HAL-afb/HAL-plugin/HalPlug.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2016 "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.
- *
- * AfbCallBack (snd_ctl_hal_t *handle, int numid, void **response);
- * AfbHalInit is mandatory and called with numid=0
- *
- * Syntaxe in .asoundrc file
- * CrlLabel { cb MyFunctionName name "My_Second_Control" }
- */
-
-
-#include <alsa/asoundlib.h>
-#include <alsa/control_external.h>
-#include <linux/soundcard.h>
-
-#ifndef SOUND_HAL_MAX_CTLS
-#define SOUND_HAL_MAX_CTLS 255
-#endif
-
-
-typedef enum {
- CTLCB_INIT ,
- CTLCB_CLOSE ,
- CTLCB_ELEM_COUNT ,
- CTLCB_ELEM_LIST ,
- CTLCB_FIND_ELEM ,
- CTLCB_FREE_KEY ,
- CTLCB_GET_ATTRIBUTE ,
- CTLCB_GET_INTEGER_INFO ,
- CTLCB_GET_INTEGER64_INFO ,
- CTLCB_GET_ENUMERATED_INFO ,
- CTLCB_GET_ENUMERATED_NAME ,
- CTLCB_READ_INTEGER ,
- CTLCB_READ_INTEGER64 ,
- CTLCB_READ_ENUMERATED ,
- CTLCB_READ_BYTES ,
- CTLCB_READ_IEC958 ,
- CTLCB_WRITE_INTEGER ,
- CTLCB_WRITE_INTEGER64 ,
- CTLCB_WRITE_ENUMERATED ,
- CTLCB_WRITE_BYTES ,
- CTLCB_WRITE_IEC958 ,
- CTLCB_SUBSCRIBE_EVENTS ,
- CTLCB_READ_EVENT ,
- CTLCB_POLL_DESCRIPTORS_COUNT ,
- CTLCB_POLL_DESCRIPTORS
-} snd_ctl_action_t;
-
-typedef struct {
- int ctlNumid;
- const char *ctlName;
-} snd_ctl_conf_t;
-
-typedef struct {
- int type;
- int acc;
- unsigned count;
-} snd_ctl_get_attrib_t;
-
-typedef struct {
- int imin;
- int imax;
- int istep;
-} snd_ctl_get_int_info_t;
-
-typedef int(*snd_ctl_cb_t)(void *handle, snd_ctl_action_t action, snd_ctl_ext_key_t key, void *response);
-
-typedef struct snd_ctl_hal {
- snd_ctl_ext_t ext;
- char *devid;
- snd_ctl_t *ctlDev;
- unsigned int ctlsCount;
- void *dlHandle;
- snd_ctl_conf_t ctls[SOUND_HAL_MAX_CTLS];
- snd_ctl_elem_info_t *infos[SOUND_HAL_MAX_CTLS];
- snd_ctl_cb_t cbs[SOUND_HAL_MAX_CTLS];
-} snd_ctl_hal_t;
-
-
diff --git a/HAL-afb/HAL-plugin/HalPlugCb.c b/HAL-afb/HAL-plugin/HalPlugCb.c
deleted file mode 100644
index 362858d..0000000
--- a/HAL-afb/HAL-plugin/HalPlugCb.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2016 "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.
- *
- * AfbCallBack (snd_ctl_hal_t *handle, int numid, void **response);
- * AfbHalInit is mandatory and called with numid=0
- *
- * Syntax in .asoundrc file
- * CrlLabel { cb MyFunctionName name "My_Second_Control" }
- *
- * Testing:
- * amixer -Dagl_hal controls
- * amixer -Dagl_hal cget name=My_Sample_Callback
- */
-
-
-#include "HalPlug.h"
-#include <stdio.h>
-
-int AfbHalInitCB (void *handle, snd_ctl_action_t action, int numid, void*response) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*)handle;
-
- fprintf (stdout, "\n - CB AfbHalInit devid=%s\n", plughandle->devid);
- return 0;
-}
-
-int AfbHalSampleCB (void *handle, snd_ctl_action_t action, snd_ctl_ext_key_t key, void*response) {
-
- switch (action) {
- case CTLCB_GET_ATTRIBUTE: {
- fprintf (stdout, " - AfbHalSampleCB CTLCB_GET_ATTRIBUTE numid=%d\n", (int)key+1);
- snd_ctl_get_attrib_t *item = (snd_ctl_get_attrib_t*)response;
- item->type = 1;
- item->count= 2;
- item->acc = SND_CTL_EXT_ACCESS_READWRITE;
- break;
- }
-
- case CTLCB_GET_INTEGER_INFO: {
- fprintf (stdout, " - AfbHalSampleCB CTLCB_GET_INTEGER_INFO numid=%d\n", (int)key+1);
- snd_ctl_get_int_info_t *item = (snd_ctl_get_attrib_t*)response;
- item->istep= 10;
- item->imin = 20;
- item->imax = 200;
- break;
- }
-
- default:
- fprintf (stdout, "CB AfbHalSampleCB unsupported action=%d numid=%d\n", action, (int)key+1);
- }
- return 0;
-}
diff --git a/HAL-afb/HAL-plugin/HalPlugCtl.c b/HAL-afb/HAL-plugin/HalPlugCtl.c
deleted file mode 100644
index 4f76595..0000000
--- a/HAL-afb/HAL-plugin/HalPlugCtl.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * Copyright (C) 2016 "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.
- *
- * Testing:
- * 1) Copy generated plugin [libasound_module_pcm_afbhal.so] in alsa-lib/ dir visible from LD_LIBRARY_PATH (eg: /usr/lib64/alsa-lib)
- * 2) Create a ~/.asounrc file base on following template
- * ctl.agl_hal {
- * type afbhal
- * devid "hw:4"
- * cblib "afbhal_cb_sample.so"
- * ctls {
- * # ctlLabel {numid integer name "Alsa Ctl Name"}
- * MasterSwitch { numid 4 name "My_First_Control" }
- * MasterVol { numid 5 name "My_Second_Control" }
- * CB_sample { ctlcb @AfbHalSampleCB name "My_Sample_Callback"}
- * }
- * pcm.agl_hal {
- * type copy # Copy PCM
- * slave "hw:4" # Slave name
- * }
- *
- * }
- * 3) Test with
- * - amixer -Dagl_hal controls # should list all your controls
- * - amixer -Dagl_hal cget numid=1
- * - amixer -Dagl_hal cset numid=1 '10,20'
- */
-
-
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include "HalPlug.h"
-#include <dlfcn.h>
-
-
-static snd_ctl_ext_key_t AfbHalElemFind(snd_ctl_ext_t *ext, const snd_ctl_elem_id_t *id) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_ext_key_t key=NULL;
-
- int numid = snd_ctl_elem_id_get_numid(id);
- if (numid > 0) {
- if (numid > plughandle->ctlsCount) goto OnErrorExit;
- key= (snd_ctl_ext_key_t) numid -1;
- goto SucessExit;
- }
-
- const char *ctlName= snd_ctl_elem_id_get_name(id);
- if (ctlName == NULL) goto OnErrorExit;
-
- for (int idx=0; idx < plughandle->ctlsCount; idx++) {
- if (! strcmp(ctlName, plughandle->ctls[idx].ctlName)) {
- key = idx;
- goto SucessExit;
- }
- }
-
- SucessExit:
- return key;
-
- OnErrorExit:
- return -1;
-}
-
-static int AfbHalGetAttrib(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int *type, unsigned int *acc, unsigned int *count) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_elem_info_t *elemInfo = plughandle->infos[key];
- snd_ctl_cb_t callback = plughandle->cbs[key];
-
-
- // search for equivalent NUMID in effective sound card
- if (elemInfo) {
- *type = snd_ctl_elem_info_get_type(elemInfo);
- *count = snd_ctl_elem_info_get_count(elemInfo);
- *acc = SND_CTL_EXT_ACCESS_READWRITE; // Future ToBeDone
- return 0;
- }
-
- if (callback) {
- snd_ctl_get_attrib_t item;
-
- int err = callback(plughandle, CTLCB_GET_ATTRIBUTE, key, &item);
- if (!err) {
- *type = item.type;
- *acc = item.acc;
- *count= item.count;
- }
- return err;
- }
-
- return -1;
-}
-
-static int AfbHalGetIntInfo(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *imin, long *imax, long *istep) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_elem_info_t *elemInfo = plughandle->infos[key];
- snd_ctl_cb_t callback = plughandle->cbs[key];
-
- if (elemInfo) {
-
- // Should be normalised to make everything 0-100%
- *imin = (long)snd_ctl_elem_info_get_min(elemInfo);
- *imax = (long)snd_ctl_elem_info_get_min(elemInfo);
- *istep= (long)snd_ctl_elem_info_get_min(elemInfo);
- return 0;
- }
-
- if (callback) {
- snd_ctl_get_int_info_t item;
-
- int err = callback(plughandle, CTLCB_GET_INTEGER_INFO, key, &item);
- if (!err) {
- *imin = item.imin;
- *imax = item.imax;
- *istep= item.istep;
- }
- return err;
- }
-
- return -1;
-}
-
-static int AfbHalGetEnumInfo(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_elem_info_t *elemInfo = plughandle->infos[key];
- snd_ctl_cb_t callback = plughandle->cbs[key];
-
- if(elemInfo) *items= snd_ctl_elem_info_get_items(elemInfo);
- if(callback) callback(plughandle, CTLCB_GET_ENUMERATED_INFO, key, items);
-
- return 0;
-}
-
-static int AfbHalGetEnumName(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int item, char *name, size_t name_max_len) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_elem_info_t *elemInfo = plughandle->infos[key];
-
- //name= snd_ctl_elem_info_get_item_name(elemInfo);
- return 0;
-}
-
-static int AfbHalReadInt(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- snd_ctl_elem_info_t *elemInfo = plughandle->infos[key];
-
- return 0;
-}
-
-static int AfbHalReadEnumerate(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
-
- return 0;
-}
-
-static int AfbHalWriteInt(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
-
- return 0;
-}
-
-static int AfbHalWriteEnum(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
-
- return 0;
-}
-
-static int AfbHalEventRead(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id, unsigned int *event_mask) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
-
- return -EAGAIN;
-}
-
-static int AfbHalElemList(snd_ctl_ext_t *ext, unsigned int offset, snd_ctl_elem_id_t *id) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
-
- snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
- snd_ctl_elem_id_set_name(id, plughandle->ctls[offset].ctlName);
-
- return 0;
-}
-
-static int AfbHalElemCount(snd_ctl_ext_t *ext) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- int count = plughandle->ctlsCount;
- return count;
-}
-
-static void AfbHalClose(snd_ctl_ext_t *ext) {
- snd_ctl_hal_t *plughandle = (snd_ctl_hal_t*) ext->private_data;
- int err;
-
- for (int idx=0; idx < plughandle->ctlsCount; idx++) {
- if (plughandle->ctls[idx].ctlName) free((void*)plughandle->ctls[idx].ctlName);
- }
-
- err = snd_ctl_close(plughandle->ctlDev);
- if (err) SNDERR("Fail Close sndctl: devid=%s err=%s", plughandle->devid, snd_strerror(err));
-
- if (plughandle->devid) free(plughandle->devid);
- free(plughandle);
-}
-
-static snd_ctl_ext_callback_t afbHalCBs = {
- .close = AfbHalClose,
- .elem_count = AfbHalElemCount,
- .elem_list = AfbHalElemList,
- .find_elem = AfbHalElemFind,
- .get_attribute = AfbHalGetAttrib,
- .get_integer_info = AfbHalGetIntInfo,
- .get_enumerated_info = AfbHalGetEnumInfo,
- .get_enumerated_name = AfbHalGetEnumName,
- .read_integer = AfbHalReadInt,
- .read_enumerated = AfbHalReadEnumerate,
- .write_integer = AfbHalWriteInt,
- .write_enumerated = AfbHalWriteEnum,
- .read_event = AfbHalEventRead,
-};
-
-SND_CTL_PLUGIN_DEFINE_FUNC(afbhal) {
-
- snd_config_iterator_t it, next;
- snd_ctl_hal_t *plughandle;
- int err;
- snd_ctl_cb_t AfbHalInitCB;
- const char *libname;
-
- plughandle = calloc(1, sizeof(snd_ctl_hal_t));
-
- snd_config_for_each(it, next, conf) {
- snd_config_t *node = snd_config_iterator_entry(it);
- const char *id;
-
- // ignore comment en empty lines
- if (snd_config_get_id(node, &id) < 0) continue;
- if (strcmp(id, "comment") == 0 || strcmp(id, "type") == 0 || strcmp(id, "hint") == 0) continue;
-
- // devid should point onto a valid sound card
- if (strcmp(id, "devid") == 0) {
- const char *devid;
- if (snd_config_get_string(node, &devid) < 0) {
- SNDERR("Invalid string type for %s", id);
- return -EINVAL;
- }
- plughandle->devid=strdup(devid);
-
- // open control interface for devid
- err = snd_ctl_open(&plughandle->ctlDev, plughandle->devid, 0);
- if (err < 0) {
- SNDERR("Fail to open control device for devid=%s", plughandle->devid);
- return -EINVAL;
- }
- continue;
- }
-
- if (strcmp(id, "cblib") == 0) {
- if (snd_config_get_string(node, &libname) < 0) {
- SNDERR("Invalid libname string for %s", id);
- return -EINVAL;
- }
-
- plughandle->dlHandle= dlopen(libname, RTLD_NOW);
- if (!plughandle->dlHandle) {
- SNDERR("Fail to open callback sharelib=%s error=%s", libname, dlerror());
- return -EINVAL;
- }
-
- AfbHalInitCB = dlsym(plughandle->dlHandle, "AfbHalInitCB");
- if (!AfbHalInitCB) {
- SNDERR("Fail find 'AfbHalInitCB' symbol into callbacks sharelib=%s", libname);
- return -EINVAL;
- }
-
- err = (*AfbHalInitCB)(plughandle,CTLCB_INIT, 0,0);
- if (err) {
- SNDERR("Fail AfbHalInitCB err=%d", err);
- return -EINVAL;
- }
-
- continue;
- }
-
- if (strcmp(id, "ctl") == 0) {
- const char *ctlConf;
- snd_config_type_t ctype;
- snd_config_iterator_t currentCtl, follow;
- snd_config_t *itemConf;
-
- ctype = snd_config_get_type (node);
- if (ctype != SND_CONFIG_TYPE_COMPOUND) {
- snd_config_get_string (node, &ctlConf);
- SNDERR("Invalid compound type for %s", node);
- return -EINVAL;
- }
-
- // loop on each ctl within ctls
- snd_config_for_each (currentCtl, follow, node) {
- snd_config_t *ctlconfig = snd_config_iterator_entry(currentCtl);
- snd_ctl_elem_info_t *elemInfo;
- const char *ctlLabel, *ctlName;
-
- // ignore empty line
- if (snd_config_get_id(ctlconfig, &ctlLabel) < 0) continue;
-
- // each clt should be a valid config compound
- ctype = snd_config_get_type (ctlconfig);
- if (ctype != SND_CONFIG_TYPE_COMPOUND) {
- snd_config_get_string (node, &ctlConf);
- SNDERR("Invalid ctl config for %s", ctlLabel);
- return -EINVAL;
- }
-
- err=snd_config_search(ctlconfig, "ctl", &itemConf);
- if (!err) {
- if (snd_config_get_integer(itemConf, (long*)&plughandle->ctls[plughandle->ctlsCount].ctlNumid) < 0) {
- SNDERR("Not Integer: ctl:%s numid should be a valid integer", ctlLabel);
- return -EINVAL;
- }
-
- // Make sure than numid is valid on slave snd card
- snd_ctl_elem_info_malloc(&elemInfo);
- snd_ctl_elem_info_set_numid(elemInfo, (int)plughandle->ctls[plughandle->ctlsCount].ctlNumid);
- plughandle->infos[plughandle->ctlsCount]= elemInfo;
-
- err = snd_ctl_elem_info(plughandle->ctlDev, elemInfo);
- if (err) {
- SNDERR("Not Found: 'numid=%d' for 'devid=%s'", plughandle->ctls[plughandle->ctlsCount].ctlNumid, plughandle->devid);
- return -EINVAL;
- }
- }
-
- err=snd_config_search(ctlconfig, "ctlcb", &itemConf);
- if (!err) {
- const char *funcname;
- void *funcaddr;
-
- if (snd_config_get_string(itemConf, &funcname) < 0) {
- SNDERR("Not string: ctl:%s cbname should be a valid string", ctlLabel);
- return -EINVAL;
- }
-
- if (funcname[0] != '@') {
- SNDERR("Not string: ctl:%s cbname=%s should be prefixed with '@' ", ctlLabel, funcname);
- return -EINVAL;
- }
-
- if (!plughandle->dlHandle) {
- SNDERR("No CB: ctl:%s cblib:/my/libcallback missing from asoundrc", ctlLabel);
- return -EINVAL;
- }
-
- funcaddr = dlsym(plughandle->dlHandle, &funcname[1]);
- if (!funcaddr) {
- SNDERR("NotFound CB: ctl:%s cbname='%s' no symbol into %s", ctlLabel, &funcname[1], libname);
- return -EINVAL;
- }
- plughandle->cbs[plughandle->ctlsCount]=funcaddr;
- }
-
- err=snd_config_search(ctlconfig, "name", &itemConf);
- if (err) {
- SNDERR("Not Found: 'name' mandatory in ctl config");
- return -EINVAL;
- }
-
- if (snd_config_get_string(itemConf, &ctlName) < 0) {
- SNDERR("Not String: ctl:%s 'name' should be a valie string", ctlLabel);
- return -EINVAL;
- }
- plughandle->ctls[plughandle->ctlsCount].ctlName = strdup(ctlName);
-
- // move to next ctl if any
- plughandle->ctlsCount++;
- } // end for each ctl
- continue;
- }
- SNDERR("Unknown field %s", id);
- return -EINVAL;
- }
-
-
-
- // Create ALSA control plugin structure
- plughandle->ext.version = SND_CTL_EXT_VERSION;
- plughandle->ext.card_idx = 0; /* FIXME */
- strcpy(plughandle->ext.id , "AFB-HAL-CTL");
- strcpy(plughandle->ext.driver , "AFB-HAL");
- strcpy(plughandle->ext.name , "AFB-HAL Control Plugin");
- strcpy(plughandle->ext.mixername, "AFB-HAL Mixer Plugin");
- strcpy(plughandle->ext.longname , "Automotive-Linux Sound Abstraction Control Plugin");
- plughandle->ext.poll_fd = -1;
- plughandle->ext.callback = &afbHalCBs;
- plughandle->ext.private_data = (void*)plughandle;
-
-
-
- err = snd_ctl_ext_create(&plughandle->ext, name, mode);
- if (err < 0) {
- SNDERR("Fail Register sndctl for devid=%s", plughandle->devid);
- goto OnErrorExit;
- }
-
- // Plugin register controls update handlep before exiting
- *handlep = plughandle->ext.handle;
- return 0;
-
-OnErrorExit:
- free(plughandle);
- return -1;
-}
-
-SND_CTL_PLUGIN_SYMBOL(afbhal);
diff --git a/HAL-afb/HAL-plugin/README.md b/HAL-afb/HAL-plugin/README.md
deleted file mode 100644
index 1c1e7a2..0000000
--- a/HAL-afb/HAL-plugin/README.md
+++ /dev/null
@@ -1,44 +0,0 @@
-Hal-Plugin
-
-Object: provide an ALSA a HAL (Hardware Abstraction Layer) to automotive sound cards
-Status: Current version is proof of concept and not a usable product
-Author: Fulup Ar Foll
-Date : June-2017
-
-HAL-plugin allows:
- - to expose any existing NUMID under a customized label name, this is order to abstract sound card config.
- - to add non alsa NUMID supported through a callback mechanism (eg: volume rampdown, power off, ...)
-
-installation
- - Plugin should be placed where ever alsaplugins are located (typically: /usr/share/alsa-lib)
- - Callback sharelib directory should be declare in $LD_LIBRARY_PATH
-
-Config
-```
-cat ~/.asoundrc
- ctl.agl_hal {
- type afbhal
- devid "hw:4"
- cblib "afbhal_cb_sample.so"
- ctls {
- # ctlLabel {numid integer name "Alsa Ctl Name"}
- MasterSwitch { numid 4 name "My_First_Control" }
- MasterVol { numid 5 name "My_Second_Control" }
- CB_sample { ctlcb @AfbHalSampleCB name "My_Sample_Callback"}
- }
- pcm.agl_hal {
- type copy # Copy PCM
- slave "hw:4" # Slave name
- }
-```
-
-With such a config file
- - numid=4 from sndcard=hw:4 is renamed "My_First_Control"
- - numid=4 from sndcard=hw:4 is renamed "My_Second_Control"
- - numid=4 will call AfbHalSampleCB from afbhal_cb_sample.so
-
-Note: to really implement a usable HAL at minimum every ALSA call should be implemented and read/write of values should be normalised from 0 to 100% with a step of 1.
-
-Conclusion: This demonstrate that implementing a HAL that both abstract ALSA get/set and enable non ALSA support is possible at an acceptable cost
-without having to hack ALSA source code. The beauty of the model is than it is fully transparent to any ALSA application. The limit is that the plugin is loaded
-within every application context, thus interaction with an external event loop remains complete as well as conflict management in case of share resources.