Initial working version as independent repo

1 files changed, 0 insertions, 423 deletions

diff --git a/Alsa-Plugin/_Alsa-Hal-plugin/AlsaHalPlugCtl.c b/Alsa-Plugin/_Alsa-Hal-plugin/AlsaHalPlugCtl.c
deleted file mode 100644
index 22c217b..0000000
--- a/Alsa-Plugin/_Alsa-Hal-plugin/AlsaHalPlugCtl.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 "AlsaHalPlug.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);