Extracted from Global afb-audio repo

1 files changed, 0 insertions, 433 deletions

diff --git a/Alsa-afb/Alsa-Ucm.c b/Alsa-afb/Alsa-Ucm.c
deleted file mode 100644
index 0bfffc9..0000000
--- a/Alsa-afb/Alsa-Ucm.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- * AlsaUseCase -- provide low level interface with ALSA lib (extracted from alsa-json-gateway code)
- * Copyright (C) 2015,2016,2017, 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.
-
-   References:
-      http://www.alsa-project.org/alsa-doc/alsa-lib/group__ucm.html
-      https://www.alsa-project.org/main/index.php/DAPM
-      http://alsa-lib.sourcearchive.com/documentation/1.0.24.1-2/group__Use_ga4332c6bb50481bbdaf21be11551fb930.html
-      https://android.googlesource.com/platform/hardware/qcom/audio/+/jb-mr1-dev/libalsa-intf/alsa_ucm.h
-
-   Sample alsaucm commands using /usr/share/alsa/ucm/PandaBoard
-    - alsaucm  -c PandaBoard list _verbs
-    - alsaucm  -c PandaBoard list _devices/HiFi
-    - alsaucm  -c PandaBoard list _modifiers/HiFi  #need to uncomment modifiers section
-    - alsaucm  -c PandaBoard list TQ/HiFi
-    - alsaucm  -c PandaBoard get TQ/HiFi/Voice
-    - alsaucm  -c PandaBoard get PlaybackPCM//HiFi
-    - alsaucm  -c PandaBoard set _verb HiFi
-    - alsaucm  -c PandaBoard set _verb HiFi _enadev Headset
-    - alsaucm  -c 'HDA Intel PCH'  set _verb HiFi set  _enadev Headphone set _enamod RecordMedia
-    - alsaucm  -c 'HDA Intel PCH'  set _verb HiFi get OutputDspName//
-
- */
-#define _GNU_SOURCE  // needed for vasprintf
-
-#include <alsa/asoundlib.h>
-#include <alsa/asoundlib.h>
-#include <alsa/use-case.h>
-
-#include "Alsa-ApiHat.h"
-
-typedef struct {
-    snd_use_case_mgr_t *ucm;
-    int cardId;
-    char *cardName;
-} ucmHandleT;
-
-static ucmHandleT ucmHandles[MAX_SND_CARD];
-
-// Cache opened UCM handles
-
-STATIC int alsaUseCaseOpen(struct afb_req request, queryValuesT *queryValues, int allowNewMgr) {
-    snd_ctl_t *ctlDev;
-    snd_ctl_card_info_t *cardinfo;
-    snd_use_case_mgr_t *ucmHandle;
-    const char *cardName;
-    int cardId, idx, idxFree = -1, err;
-
-    // open control interface for devid
-    err = snd_ctl_open(&ctlDev, queryValues->devid, SND_CTL_READONLY);
-    if (err < 0) {
-        ctlDev = NULL;
-        afb_req_fail_f(request, "devid-unknown", "SndCard devid=[%s] Not Found err=%d", queryValues->devid, err);
-        goto OnErrorExit;
-    }
-
-    snd_ctl_card_info_alloca(&cardinfo);
-    if ((err = snd_ctl_card_info(ctlDev, cardinfo)) < 0) {
-        afb_req_fail_f(request, "devid-invalid", "SndCard devid=[%s] Not Found err=%s", queryValues->devid, snd_strerror(err));
-        goto OnErrorExit;
-    }
-
-    // search for an existing subscription and mark 1st free slot
-    cardId = snd_ctl_card_info_get_card(cardinfo);
-    for (idx = 0; idx < MAX_SND_CARD; idx++) {
-        if (ucmHandles[idx].ucm != NULL) {
-            if (ucmHandles[idx].cardId == cardId) goto OnSuccessExit;
-        } else if (idxFree == -1) idxFree = idx;
-    };
-
-    if (!allowNewMgr) {
-        afb_req_fail_f(request, "ucm-nomgr", "SndCard devid=[%s] no exiting UCM manager session", queryValues->devid);
-        goto OnErrorExit;
-    }
-
-    if (idxFree < 0 && idx == MAX_SND_CARD) {
-        afb_req_fail_f(request, "ucm-toomany", "SndCard devid=[%s] too many open UCM Max=%d", queryValues->devid, MAX_SND_CARD);
-        goto OnErrorExit;
-    }
-
-    idx = idxFree;
-    cardName = snd_ctl_card_info_get_name(cardinfo);
-    err = snd_use_case_mgr_open(&ucmHandle, cardName);
-    if (err) {
-        afb_req_fail_f(request, "ucm-open", "SndCard devid=[%s] name=[%s] No UCM Profile err=%s", queryValues->devid, cardName, snd_strerror(err));
-        goto OnErrorExit;
-    }
-    ucmHandles[idx].ucm = ucmHandle;
-    ucmHandles[idx].cardId = cardId;
-    ucmHandles[idx].cardName = strdup(cardName);
-
-OnSuccessExit:
-    if (ctlDev) snd_ctl_close(ctlDev);
-    return idx;
-
-OnErrorExit:
-    if (ctlDev) snd_ctl_close(ctlDev);
-    return -1;
-}
-
-PUBLIC void alsaUseCaseQuery(struct afb_req request) {
-    int verbCount, ucmIdx;
-    const char **verbList;
-    snd_use_case_mgr_t *ucmHandle;
-    queryValuesT queryValues;
-    json_object *ucmJs;
-    const char *cardName;
-
-    json_object *queryJ = alsaCheckQuery(request, &queryValues);
-    if (!queryJ) goto OnErrorExit;
-
-    ucmIdx = alsaUseCaseOpen(request, &queryValues, TRUE);
-    if (ucmIdx < 0) goto OnErrorExit;
-    ucmHandle = ucmHandles [ucmIdx].ucm;
-    cardName = ucmHandles [ucmIdx].cardName;
-
-    verbCount = snd_use_case_get_list(ucmHandle, "_verbs", &verbList);
-    if (verbCount < 0) {
-        afb_req_fail_f(request, "ucm-list", "SndCard devid=[%s] name=[%s] No UCM Verbs", queryValues.devid, cardName);
-        goto OnErrorExit;
-    }
-
-    ucmJs = json_object_new_array();
-    for (int idx = 0; idx < verbCount; idx += 2) {
-        int devCount, modCount, tqCount;
-        const char **devList, **modList, **tqList;
-        json_object *ucmJ = json_object_new_object();
-        char identifier[32];
-
-        json_object_object_add(ucmJ, "verb", json_object_new_string(verbList[idx]));
-        if (verbList[idx + 1]) json_object_object_add(ucmJ, "info", json_object_new_string(verbList[idx + 1]));
-
-        AFB_DEBUG("Verb[%d] Action=%s Info=%s", idx, verbList[idx], verbList[idx + 1]);
-
-        snprintf(identifier, sizeof (identifier), "_devices/%s", verbList[idx]);
-        devCount = snd_use_case_get_list(ucmHandle, identifier, &devList);
-        if (devCount > 0) {
-            json_object *devsJ = json_object_new_array();
-
-            for (int jdx = 0; jdx < devCount; jdx += 2) {
-                json_object *devJ = json_object_new_object();
-                AFB_DEBUG("device[%d] Action=%s Info=%s", jdx, devList[jdx], devList[jdx + 1]);
-                json_object_object_add(devJ, "dev", json_object_new_string(devList[jdx]));
-                if (devList[jdx + 1]) json_object_object_add(devJ, "info", json_object_new_string(devList[jdx + 1]));
-                json_object_array_add(devsJ, devJ);
-            }
-            json_object_object_add(ucmJ, "devices", devsJ);
-            snd_use_case_free_list(devList, devCount);
-        }
-
-        snprintf(identifier, sizeof (identifier), "_modifiers/%s", verbList[idx]);
-        modCount = snd_use_case_get_list(ucmHandle, identifier, &modList);
-        if (modCount > 0) {
-            json_object *modsJ = json_object_new_array();
-
-            for (int jdx = 0; jdx < modCount; jdx += 2) {
-                json_object *modJ = json_object_new_object();
-                AFB_DEBUG("modifier[%d] Action=%s Info=%s", jdx, modList[jdx], modList[jdx + 1]);
-                json_object_object_add(modJ, "mod", json_object_new_string(modList[jdx]));
-                if (modList[jdx + 1]) json_object_object_add(modJ, "info", json_object_new_string(modList[jdx + 1]));
-                json_object_array_add(modsJ, modJ);
-            }
-            json_object_object_add(ucmJ, "modifiers", modsJ);
-            snd_use_case_free_list(modList, modCount);
-        }
-
-        snprintf(identifier, sizeof (identifier), "TQ/%s", verbList[idx]);
-        tqCount = snd_use_case_get_list(ucmHandle, identifier, &tqList);
-        if (tqCount > 0) {
-            json_object *tqsJ = json_object_new_array();
-
-            for (int jdx = 0; jdx < tqCount; jdx += 2) {
-                json_object *tqJ = json_object_new_object();
-                AFB_DEBUG("toneqa[%d] Action=%s Info=%s", jdx, tqList[jdx], tqList[jdx + 1]);
-                json_object_object_add(tqJ, "tq", json_object_new_string(tqList[jdx]));
-                if (tqList[jdx + 1]) json_object_object_add(tqJ, "info", json_object_new_string(tqList[jdx + 1]));
-                json_object_array_add(tqsJ, tqJ);
-            }
-            json_object_object_add(ucmJ, "tqs", tqsJ);
-            snd_use_case_free_list(tqList, tqCount);
-        }
-
-        json_object_array_add(ucmJs, ucmJ);
-    }
-
-    afb_req_success(request, ucmJs, NULL);
-    snd_use_case_free_list(verbList, verbCount);
-
-OnErrorExit:
-    return;
-}
-
-STATIC json_object *ucmGetValue(ucmHandleT *ucmHandle, const char *verb, const char *mod, const char *label) {
-    char identifier[80];
-    char *value;
-    int err;
-    json_object *jValue;
-
-    // handle optional parameters
-    if (!mod) mod = "";
-    if (!verb) verb = "";
-
-    if (!label) {
-        AFB_NOTICE("ucmGetValue cardname=[%s] value label missing", ucmHandle->cardName);
-        goto OnErrorExit;
-    }
-
-    snprintf(identifier, sizeof (identifier), "%s/%s/%s", label, mod, verb);
-    err = snd_use_case_get(ucmHandle->ucm, identifier, (const char**) &value); // Note: value casting is a known "FEATURE" of AlsaUCM API
-    if (err) {
-        AFB_DEBUG("ucmGetValue cardname=[%s] identifier=[%s] error=%s", ucmHandle->cardName, identifier, snd_strerror(err));
-        goto OnErrorExit;
-    }
-
-    // copy value into json object and free string
-    jValue = json_object_new_string(value);
-    free(value);
-    return (jValue);
-
-OnErrorExit:
-    return (NULL);
-}
-
-PUBLIC void alsaUseCaseGet(struct afb_req request) {
-    int ucmIdx, labelCount;
-    queryValuesT queryValues;
-    json_object *jResponse = json_object_new_object();
-    json_object *jWarnings = json_object_new_array();
-    const char *warnings = NULL;
-
-    json_object *queryJ = alsaCheckQuery(request, &queryValues);
-    if (!queryJ) goto OnErrorExit;
-    ;
-
-    ucmIdx = alsaUseCaseOpen(request, &queryValues, TRUE);
-    if (ucmIdx < 0) goto OnErrorExit;
-
-    const char *cardName = ucmHandles[ucmIdx].cardName;
-
-    const char *verb = afb_req_value(request, "verb");
-    const char *mod = afb_req_value(request, "mod");
-    const char *dev = afb_req_value(request, "dev");
-
-    if (dev && mod) {
-        afb_req_fail_f(request, "ucmget-labels", "SndCard devid=[%s] name=[%s] UCM mod+dev incompatible", queryValues.devid, cardName);
-        goto OnErrorExit;
-    }
-
-    // device selection is handle as a modifier
-    if (dev) mod = dev;
-
-    const char *labels = afb_req_value(request, "value");
-    if (!labels) {
-        afb_req_fail_f(request, "ucmget-labels", "SndCard devid=[%s] name=[%s] UCM values name missing", queryValues.devid, cardName);
-        goto OnErrorExit;
-    }
-
-    json_object *jLabels = json_tokener_parse(labels);
-    if (!jLabels) {
-        afb_req_fail_f(request, "ucmget-notjson", "labels=%s not a valid json entry", labels);
-        goto OnErrorExit;
-    };
-
-    enum json_type jtype = json_object_get_type(jLabels);
-    switch (jtype) {
-            json_object *tmpJ;
-
-        case json_type_array:
-            labelCount = json_object_array_length(jLabels);
-            break;
-
-        case json_type_string:
-            tmpJ = json_object_new_array();
-            labelCount = 1;
-            json_object_array_add(tmpJ, jLabels);
-            jLabels = tmpJ;
-            break;
-
-        default:
-            afb_req_fail_f(request, "ucmget-notarray", "labels=%s not valid JSON array", labels);
-            goto OnErrorExit;
-    }
-
-    for (int idx = 0; idx < labelCount; idx++) {
-        json_object *jValue, *jLabel;
-        const char *label;
-
-        jLabel = json_object_array_get_idx(jLabels, idx);
-        label = json_object_get_string(jLabel);
-        jValue = ucmGetValue(&ucmHandles[ucmIdx], verb, mod, label);
-        if (jValue) json_object_object_add(jResponse, label, jValue);
-        else {
-            json_object_array_add(jWarnings, jLabel);
-        }
-    }
-
-    // use info section to notified not found values label
-    if (json_object_array_length(jWarnings) > 0) {
-        json_object *tmpJ = json_object_new_object();
-        json_object_object_add(tmpJ, "no-context", jWarnings);
-        warnings = json_object_get_string(tmpJ);
-    }
-    afb_req_success(request, jResponse, warnings);
-
-OnErrorExit:
-    return;
-}
-
-PUBLIC void alsaUseCaseSet(struct afb_req request) {
-    int err, ucmIdx;
-    queryValuesT queryValues;
-    json_object *jResponse = json_object_new_object();
-
-    json_object *queryJ = alsaCheckQuery(request, &queryValues);
-    if (!queryJ) goto OnErrorExit;
-
-
-    ucmIdx = alsaUseCaseOpen(request, &queryValues, TRUE);
-    if (ucmIdx < 0) goto OnErrorExit;
-
-    snd_use_case_mgr_t *ucmMgr = ucmHandles[ucmIdx].ucm;
-    const char *cardName = ucmHandles[ucmIdx].cardName;
-
-    const char *verb = afb_req_value(request, "verb");
-    const char *mod = afb_req_value(request, "mod");
-    const char *dev = afb_req_value(request, "dev");
-    // Known identifiers: _verb - set current verb = value _enadev - enable given device = value _disdev - disable given device = value _swdev/{old_device} - new_device = value
-
-    if (verb) {
-        err = snd_use_case_set(ucmMgr, "_verb", verb);
-        if (err) {
-            afb_req_fail_f(request, "ucmset-verb", "SndCard devid=[%s] name=[%s] Invalid UCM verb=[%s] err=%s", queryValues.devid, cardName, verb, snd_strerror(err));
-            goto OnErrorExit;
-        }
-    }
-
-    if (dev) {
-        err = snd_use_case_set(ucmMgr, "_enadev", dev);
-        if (err) {
-            afb_req_fail_f(request, "ucmset-dev", "SndCard devid=[%s] name=[%s] Invalid UCMverb=[%s] dev=%s err=%s", queryValues.devid, cardName, verb, dev, snd_strerror(err));
-            goto OnErrorExit;
-        }
-    }
-
-    if (mod) {
-        err = snd_use_case_set(ucmMgr, "_enamod", mod);
-        if (err) {
-            afb_req_fail_f(request, "ucmset-mod", "SndCard devid=[%s] name=[%s] Invalid UCM verb=[%s] mod=[%s] err=%s", queryValues.devid, cardName, verb, mod, snd_strerror(err));
-            goto OnErrorExit;
-        }
-    }
-
-    // label are requested transfert request to get
-    if (afb_req_value(request, "value")) return alsaUseCaseGet(request);
-
-    if (queryValues.mode <= 3) {
-        json_object *jValue;
-
-        jValue = ucmGetValue(&ucmHandles[ucmIdx], verb, dev, "OutputDspName");
-        if (jValue) json_object_object_add(jResponse, "OutputDspName", jValue);
-
-        jValue = ucmGetValue(&ucmHandles[ucmIdx], verb, dev, "PlaybackPCM");
-        if (jValue) json_object_object_add(jResponse, "PlaybackPCM", jValue);
-
-        jValue = ucmGetValue(&ucmHandles[ucmIdx], verb, mod, "CapturePCM");
-        if (jValue) json_object_object_add(jResponse, "CapturePCM", jValue);
-    }
-    afb_req_success(request, jResponse, NULL);
-
-OnErrorExit:
-    return;
-}
-
-PUBLIC void alsaUseCaseReset(struct afb_req request) {
-    int err, ucmIdx;
-    queryValuesT queryValues;
-
-    json_object *queryJ = alsaCheckQuery(request, &queryValues);
-    if (!queryJ) goto OnErrorExit;
-
-    ucmIdx = alsaUseCaseOpen(request, &queryValues, FALSE);
-    if (ucmIdx < 0) goto OnErrorExit;
-
-    err = snd_use_case_mgr_reset(ucmHandles[ucmIdx].ucm);
-    if (err) {
-        afb_req_fail_f(request, "ucmreset-fail", "devid=%s Card Name=%s", queryValues.devid, ucmHandles[ucmIdx].cardName);
-        goto OnErrorExit;
-    }
-
-    afb_req_success(request, NULL, NULL);
-
-OnErrorExit:
-    return;
-}
-
-PUBLIC void alsaUseCaseClose(struct afb_req request) {
-    int err, ucmIdx;
-    queryValuesT queryValues;
-
-    json_object *queryJ = alsaCheckQuery(request, &queryValues);
-    if (!queryJ) goto OnErrorExit;
-
-    ucmIdx = alsaUseCaseOpen(request, &queryValues, FALSE);
-    if (ucmIdx < 0) goto OnErrorExit;
-
-    err = snd_use_case_mgr_close(ucmHandles[ucmIdx].ucm);
-    if (err) {
-        afb_req_fail_f(request, "ucmreset-close", "devid=%s Card Name=%s", queryValues.devid, ucmHandles[ucmIdx].cardName);
-        goto OnErrorExit;
-    }
-
-    // do not forget to release sound card name string
-    free(ucmHandles[ucmIdx].cardName);
-
-    afb_req_success(request, NULL, NULL);
-
-OnErrorExit:
-    return;
-}
-
-