diff options
Diffstat (limited to 'HighLevel-afb/HighLevelBinding.c')
| -rw-r--r-- | HighLevel-afb/HighLevelBinding.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/HighLevel-afb/HighLevelBinding.c b/HighLevel-afb/HighLevelBinding.c new file mode 100644 index 0000000..df5f2c3 --- /dev/null +++ b/HighLevel-afb/HighLevelBinding.c @@ -0,0 +1,316 @@ +/* + * 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. + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <netdb.h> +#include <fcntl.h> +#include <math.h> +#include <sys/time.h> +#include <sys/types.h> + +#include "HighLevelBinding.h" + +static struct afb_service srvitf; + + +// This callback is fired when afb_service_call for api/alsacore/subctl returns +STATIC void audioLogicSetVolCB(void *handle, int iserror, struct json_object *result) { + struct afb_req request = afb_req_unstore(handle); + + if (!cbCheckResponse(request, iserror, result)) goto OnExit; + +OnExit: + return; +} + +PUBLIC void audioLogicSetVol(struct afb_req request) { + struct json_object *queryurl; + int volume=0; // FULUP TBD !!!!!!!!!!!! + + // keep request for callback to respond + struct afb_req *handle = afb_req_store(request); + + // get client context + AudioLogicCtxT *ctx = afb_req_context_get(request); + + const char *vol = afb_req_value(request, "vol"); + if (vol == NULL) { + afb_req_fail_f(request, "argument-missing", "vol=+-%[0,100] missing"); + goto OnExit; + } + + switch (vol[0]) { + case '+': + break; + case '-': + break; + case '%': + break; + + default: + afb_req_fail_f(request, "value-invalid", "volume should be (+-%[0-100]xxx) vol=%s", vol); + goto OnExit; + } + + if (!ctx->halapi) { + afb_req_fail_f(request, "context-invalid", "No valid halapi in client context"); + goto OnExit; + } + + // ********** Caluler le volume en % de manière intelligente + queryurl = json_object_new_object(); + json_object_object_add(ctx->queryurl, "pcm", json_object_new_int(Master_Playback_Volume)); + json_object_object_add(ctx->queryurl, "value", json_object_new_int(volume)); + + // subcontract HAL API to process volume + afb_service_call(srvitf, ctx->halapi, "volume", queryurl, audioLogicSetVolCB, handle); + + // final success/failure messages handle from callback +OnExit: + return; +} + +// This callback is fired when afb_service_call for api/alsacore/subctl returns + +STATIC void alsaSubcribeCB(void *handle, int iserror, struct json_object *result) { + struct afb_req request = afb_req_unstore(handle); + + if (!cbCheckResponse(request, iserror, result)) goto OnExit; + +OnExit: + return; +} + +// Create and subscribe to alsacore ctl events +PUBLIC void audioLogicMonitor(struct afb_req request) { + + + // get client context + AudioLogicCtxT *ctx = afb_req_context_get(request); + if (!ctx) { + afb_req_fail_f(request, "ctx-notfound", "No Client Context HAL/getcontrol devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + // push request to low level binding + NOTICE(afbIface, "audioLogicMonitor ctx->devid=%s [ctx->queryurl=%s]", ctx->devid, json_object_to_json_string(ctx->queryurl)); + + if (ctx->queryurl) { + json_object_get(ctx->queryurl); // Make sure usage count does not fall to zero + struct afb_req *handle = afb_req_store(request); + afb_service_call(srvitf, "alsacore", "subscribe", ctx->queryurl, alsaSubcribeCB, handle); + } + else afb_req_fail_f(request, "context-invalid", "No valid queryurl in client context"); + + // success/failure messages return from callback +OnExit: + return; +} + +// Subscribe to AudioBinding events + +PUBLIC void audioLogicSubscribe(struct afb_req request) { + + return; +} + + +// Call when all bindings are loaded and ready to accept request +PUBLIC void audioLogicGetVol(struct afb_req request) { + + // Should call here Hardware Alsa Abstraction Layer for corresponding Sound Card + afb_req_success(request, NULL, NULL); + return; + +} + +// This callback is fired when afb_service_call for api/alsacore/subctl returns + +STATIC void audioLogicOpenCB2(void *handle, int iserror, struct json_object *result) { + struct json_object *response; + + // Make sure we got a response from API + struct afb_req request = afb_req_unstore(handle); + if (!cbCheckResponse(request, iserror, result)) goto OnExit; + + // get client context + AudioLogicCtxT *ctx = afb_req_context_get(request); + if (!ctx) { + afb_req_fail_f(request, "ctx-notfound", "No Client Context HAL/getcontrol devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + // Get response from object + json_object_object_get_ex(result, "response", &response); + if (!response) { + afb_req_fail_f(request, "response-notfound", "No Controls return from HAL/getcontrol devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + // extract sounds controls information from received Object + struct json_object *ctls; + json_object_object_get_ex(response, "ctls", &ctls); + if (!ctls) { + afb_req_fail_f(request, "ctls-notfound", "No Controls return from HAL/getcontrol devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + // make sure return controls have a valid type + if (json_object_get_type(ctls) != json_type_array) { + afb_req_fail_f(request, "ctls-notarray", "Invalid Controls return from HAL/getcontrol devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + // loop on array and store values into client context + for (int idx = 0; idx < json_object_array_length(ctls); idx++) { + struct json_object *ctl; + halCtlsEnumT control; + int value; + + ctl = json_object_array_get_idx(ctls, idx); + if (json_object_array_length(ctl) != 2) { + afb_req_fail_f(request, "ctl-invalid", "Invalid Control return from HAL/getcontrol devid=[%] name=[%s] ctl=%s" + , ctx->devid, ctx->shortname, json_object_get_string(ctl)); + goto OnExit; + } + + // As HAL and Business logic use the same AlsaMixerHal.h direct conversion is not an issue + control = (halCtlsEnumT) json_object_get_int(json_object_array_get_idx(ctl, 0)); + value = json_object_get_int(json_object_array_get_idx(ctl, 1)); + + switch (control) { + case Master_Playback_Volume: + ctx->volumes.masterPlaybackVolume = value; + break; + + case PCM_Playback_Volume: + ctx->volumes.pcmPlaybackVolume = value; + break; + + case PCM_Playback_Switch: + ctx->volumes.pcmPlaybackSwitch = value; + break; + + case Capture_Volume: + ctx->volumes.captureVolume = value; + break; + + default: + NOTICE(afbIface, "audioLogicOpenCB2 unknown HAL control=[%s]", json_object_get_string(ctl)); + } + } + +OnExit: + afb_req_context_set(request, ctx, free); + return; +} + +// This callback is fired when afb_service_call for api/alsacore/subctl returns +STATIC void audioLogicOpenCB1(void *handle, int iserror, struct json_object *result) { + struct json_object *response, *subobj; + + // Make sure we got a valid API response + struct afb_req request = afb_req_unstore(handle); + if (!cbCheckResponse(request, iserror, result)) goto OnExit; + + // Get response from object + json_object_object_get_ex(result, "response", &response); + if (!response) { + afb_req_fail_f(request, "response-notfound", "No Controls return from HAL/getcontrol"); + goto OnExit; + } + + // attach client context to session + AudioLogicCtxT *ctx = malloc(sizeof (AudioLogicCtxT)); + + // extract information from Json Alsa Object + json_object_object_get_ex(response, "cardid", &subobj); + if (subobj) ctx->cardid = json_object_get_int(subobj); + + // store devid as an object for further alsa request + json_object_object_get_ex(response, "devid", &subobj); + if (subobj) ctx->devid = strdup(json_object_get_string(subobj)); + + json_object_object_get_ex(response, "halapi", &subobj); + if (subobj) ctx->halapi = strdup(json_object_get_string(subobj)); + + json_object_object_get_ex(response, "shortname", &subobj); + if (subobj)ctx->shortname = strdup(json_object_get_string(subobj)); + + json_object_object_get_ex(response, "longname", &subobj); + if (subobj)ctx->longname = strdup(json_object_get_string(subobj)); + + // save queryurl with devid only for further ALSA request + ctx->queryurl = json_object_new_object(); + json_object_object_add(ctx->queryurl, "devid", json_object_new_string(ctx->devid)); + + afb_req_context_set(request, ctx, free); + + // sound card was find let's store keycontrols into client session + if (!ctx->halapi) { + afb_req_fail_f(request, "hal-notfound", "No HAL found devid=[%] name=[%s]", ctx->devid, ctx->shortname); + goto OnExit; + } + + struct json_object *queryurl = json_object_new_object(); + struct json_object *ctls = json_object_new_array(); + + // add sound controls we want to keep track of into client session context + json_object_array_add(ctls, json_object_new_int((int) Master_Playback_Volume)); + json_object_array_add(ctls, json_object_new_int((int) PCM_Playback_Volume)); + json_object_array_add(ctls, json_object_new_int((int) PCM_Playback_Switch)); + json_object_array_add(ctls, json_object_new_int((int) Capture_Volume)); + + // send request to soundcard HAL binding + json_object_object_add(queryurl, "ctls", ctls); + handle = afb_req_store(request); // FULUP ???? Needed for 2nd Callback ???? + afb_service_call(srvitf, ctx->halapi, "getControl", queryurl, audioLogicOpenCB2, handle); + + afb_req_success(request, response, NULL); + +OnExit: + // release original calling request + afb_req_unref(request); + return; +} + +// Delegate to lowerlevel the mapping of soundcard name with soundcard ID +PUBLIC void audioLogicOpen(struct afb_req request) { + + // Delegate query to lower level + struct afb_req *handle = afb_req_store(request); + afb_service_call(srvitf, "alsacore", "getCardId", json_object_get(afb_req_json(request)), audioLogicOpenCB1, handle); +} + +// Free client context create from audioLogicOpenCB +PUBLIC void audioLogicClose(struct afb_req request) { + + // retrieve current client context to print debug info + AudioLogicCtxT *ctx = (AudioLogicCtxT*) afb_req_context_get(request); + DEBUG(afbIface, "audioLogicClose cardid=%d devid=%s shortname=%s longname=%s", ctx->cardid, ctx->devid, ctx->shortname, ctx->longname); +} + + +// this function is call after all binder are loaded and initialised +PUBLIC int audioLogicInit(struct afb_service service) { + srvitf = service; + return 0; +} |