2 * Copyright (C) 2016 "IoT.bzh"
3 * Author Fulup Ar Foll <fulup@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 * https://gist.github.com/ghedo/963382
19 * http://alsa-utils.sourcearchive.com/documentation/1.0.15/aplay_8c-source.html
24 #define BUFFER_FRAME_COUNT 10 /* max frames in buffer */
25 #define WAIT_TIMER_US 1000000 /* default waiting timer 1s */
27 #include <systemd/sd-event.h>
28 #include <sys/types.h>
38 #include "ucs_binding.h"
39 #include "ucs_interface.h"
43 #define MAX_FILENAME_LEN (100)
44 #define RX_BUFFER (64)
46 /** Internal structure, enabling multiple instances of this component.
47 * \note Do not access any of this variables.
52 char fileName[MAX_FILENAME_LEN];
53 uint8_t rxBuffer[RX_BUFFER];
62 UCSI_channelsT *channels;
65 static ucsContextT *ucsContextS;
67 PUBLIC void UcsXml_CB_OnError(const char format[], uint16_t vargsCnt, ...) {
68 /*DEBUG (afbIface, format, args); */
70 va_start (args, vargsCnt);
71 vfprintf (stderr, format, args);
75 PUBLIC uint16_t UCSI_CB_OnGetTime(void *pTag) {
76 struct timespec currentTime;
80 if (clock_gettime(CLOCK_MONOTONIC_RAW, ¤tTime)) {
85 timer = (uint16_t) ((currentTime.tv_sec * 1000 ) + ( currentTime.tv_nsec / 1000000 ));
89 STATIC int onTimerCB (sd_event_source* source,uint64_t timer, void* pTag) {
90 ucsContextT *ucsContext = (ucsContextT*) pTag;
92 sd_event_source_unref(source);
93 UCSI_Timeout(&ucsContext->ucsiData);
98 /* UCS2 Interface Timer Callback */
99 PUBLIC void UCSI_CB_OnSetServiceTimer(void *pTag, uint16_t timeout) {
101 /* set a timer with 250ms accuracy */
102 sd_event_now(afb_daemon_get_event_loop(afbIface->daemon), CLOCK_BOOTTIME, &usec);
103 sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, onTimerCB, pTag);
107 /** Callback when ever UNICENS forms a human readable message. */
108 void UCSI_CB_OnUserMessage(void *pTag, const char format[],
109 uint16_t vargsCnt, ...) {
110 //DEBUG (afbIface, format, args);
112 va_start (args, format);
113 vfprintf (stderr, format, args);
117 /** UCSI_Service cannot be called directly within UNICENS context, need to service stack through mainloop */
118 STATIC int OnServiceRequiredCB (sd_event_source *source, uint64_t usec, void *pTag) {
119 ucsContextT *ucsContext = (ucsContextT*) pTag;
121 sd_event_source_unref(source);
122 UCSI_Service(&ucsContext->ucsiData);
126 /* UCS Callback fire when ever UNICENS needs to be serviced */
127 PUBLIC void UCSI_CB_OnServiceRequired(void *pTag) {
129 /* push an asynchronous request for loopback to call UCSI_Service */
130 sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, 0, 0, OnServiceRequiredCB, pTag);
135 * \brief Callback when ever a MOST error message was received.
136 * \note This function must be implemented by the integrator
137 * \param pTag - Pointer given by the integrator by UCSI_Init
138 * \note All following parameters belong to the usual MOST message
140 PUBLIC void UCSI_CB_OnMostError(void *pTag, uint16_t sourceAddr,
141 uint8_t fblock, uint8_t inst, uint16_t function, uint8_t op,
142 const uint8_t *pPayload, uint32_t payloadLen) {
144 // Error to send to syslog
145 DEBUG (afbIface, "OnMostError source=0x%x", sourceAddr);
150 /* Callback when ever this UNICENS wants to send a message to INIC. */
151 PUBLIC void UCSI_CB_SendMostMessage(void *pTag, const uint8_t *pData, uint32_t len) {
153 ucsContextT *ucsContext = (ucsContextT*) pTag;
154 CdevData_t *cdevTx = &ucsContext->tx;
157 if (NULL == pData || 0 == len) return;
159 if (O_RDONLY == cdevTx->fileFlags) return;
160 if (-1 == cdevTx->fileHandle)
161 cdevTx->fileHandle = open(cdevTx->fileName, cdevTx->fileFlags);
162 if (-1 == cdevTx->fileHandle)
166 ssize_t written = write(cdevTx->fileHandle, &pData[total], (len - total));
169 /* Silently ignore write error (only occur in non-blocking mode) */
172 total += (uint32_t) written;
177 * \brief Callback when UNICENS instance has been stopped.
178 * \note This event can be used to free memory holding the resources
179 * passed with UCSI_NewConfig
180 * \note This function must be implemented by the integrator
181 * \param pTag - Pointer given by the integrator by UCSI_Init
183 void UCSI_CB_OnStop(void *pTag) {
184 NOTICE (afbIface, "UNICENS stopped");
189 * \brief Callback on Unicens management results.
190 * \note This function must be implemented by the integrator
191 * \param pTag - Pointer given by the integrator by UCSI_Init
192 * \param code - Result code
193 * \param nodeAddress - Node address of the device causing this event
194 * \param pNode - Pointer to node structure holding details of changed node
196 extern void UCSI_CB_OnMgrReport(void *pTag, Ucs_MgrReport_t code, uint16_t nodeAddress, Ucs_Rm_Node_t *pNode) {
198 DEBUG (afbIface, "OnMgrReport: Ucs_MgrReport_t=%d nodeAdresse=0x%x", code, nodeAddress);
201 bool Cdev_Init(CdevData_t *d, const char *fileName, bool read, bool write)
203 if (NULL == d || NULL == fileName) goto OnErrorExit;
205 memset(d, 0, sizeof(CdevData_t));
206 strncpy(d->fileName, fileName, MAX_FILENAME_LEN);
210 d->fileFlags = O_RDWR | O_NONBLOCK;
212 d->fileFlags = O_RDONLY | O_NONBLOCK;
214 d->fileFlags = O_WRONLY | O_NONBLOCK;
216 /* open file to enable event loop */
217 d->fileHandle = open(d->fileName, d->fileFlags);
218 if (d->fileHandle <= 0) goto OnErrorExit;
226 static bool InitializeCdevs(ucsContextT *ucsContext)
228 if(!Cdev_Init(&ucsContext->tx, CONTROL_CDEV_TX, false, true))
230 if(!Cdev_Init(&ucsContext->rx, CONTROL_CDEV_RX, true, false))
235 /* Callback fire when something is avaliable on MOST cdev */
236 int onReadCB (sd_event_source* src, int fileFd, uint32_t revents, void* pTag) {
237 ucsContextT *ucsContext =( ucsContextT*) pTag;
239 uint8_t pBuffer[RX_BUFFER];
242 len = read (ucsContext->rx.fileHandle, &pBuffer, sizeof(pBuffer));
244 ok= UCSI_ProcessRxData(&ucsContext->ucsiData, pBuffer, (uint16_t)len);
246 DEBUG (afbIface, "Buffer overrun (not handle)");
247 /* Buffer overrun could replay pBuffer */
252 STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
257 UcsXmlVal_t* ucsConfig;
259 const char *filename = afb_req_value(request, "filename");
261 afb_req_fail_f (request, "filename-missing", "No filename given");
265 fdHandle = open(filename, O_RDONLY);
267 afb_req_fail_f (request, "fileread-error", "File not accessible: '%s' err=%s", filename, strerror(fdHandle));
271 /* read file into buffer as a \0 terminated string */
272 fstat(fdHandle, &fdStat);
273 xmlBuffer = (char*)alloca(fdStat.st_size + 1);
274 readSize = read(fdHandle, xmlBuffer, fdStat.st_size);
276 xmlBuffer[readSize] = '\0'; /* In any case, terminate it. */
278 if (readSize != fdStat.st_size) {
279 afb_req_fail_f (request, "fileread-fail", "File to read fullfile '%s' size(%d!=%d)", filename, readSize, fdStat.st_size);
283 ucsConfig = UcsXml_Parse(xmlBuffer);
285 afb_req_fail_f (request, "filexml-error", "File XML invalid: '%s'", filename);
295 STATIC int volOnSvcCB (sd_event_source* source,uint64_t timer, void* pTag) {
296 ucsContextT *ucsContext = (ucsContextT*) pTag;
298 sd_event_source_unref(source);
299 UCSI_Vol_Service(&ucsContext->ucsiData);
304 /* This callback is fire each time an volume event wait in the queue */
305 void volumeCB (uint16_t timeout) {
307 sd_event_now(afb_daemon_get_event_loop(afbIface->daemon), CLOCK_BOOTTIME, &usec);
308 sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, volOnSvcCB, ucsContextS);
311 STATIC int volSndCmd (struct afb_req request, struct json_object *commandJ, ucsContextT *ucsContext) {
313 struct json_object *nameJ, *channelJ, *volJ;
315 enum json_type jtype= json_object_get_type(commandJ);
317 case json_type_array:
318 if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 0)), "%d", &numid)) {
319 afb_req_fail_f (request, "channel-invalid","command=%s channel is not an integer", json_object_get_string (channelJ));
322 if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 1)), "%d", &vol)) {
323 afb_req_fail_f (request, "vol-invalid","command=%s vol is not an integer", json_object_get_string (channelJ));
328 case json_type_object:
329 if (json_object_object_get_ex (commandJ, "numid", &channelJ)) {
330 if (!sscanf (json_object_get_string (channelJ), "%d", &numid)) {
331 afb_req_fail_f (request, "channel-invalid","command=%s numid is not an integer", json_object_get_string (channelJ));
335 if (json_object_object_get_ex (commandJ, "channel", &nameJ)) {
337 const char *name = json_object_get_string(nameJ);
339 for (idx =0; ucsContext->channels[idx].name != NULL; idx++) {
340 if (!strcasecmp(ucsContext->channels[idx].name, name)) {
341 numid = ucsContext->channels[idx].numid;
345 if (ucsContext->channels[idx].name == NULL) {
346 afb_req_fail_f (request, "channel-invalid","command=%s channel name does not exist", name);
350 afb_req_fail_f (request, "channel-invalid","command=%s no valid channel name or channel", json_object_get_string(commandJ));
355 if (!json_object_object_get_ex (commandJ, "volume", &volJ)) {
356 afb_req_fail_f (request, "vol-missing","command=%s vol not present", json_object_get_string (commandJ));
360 if (!sscanf (json_object_get_string (volJ), "%d", &vol)) {
361 afb_req_fail_f (request, "vol-invalid","command=%s vol:%s is not an integer", json_object_get_string (commandJ), json_object_get_string (volJ));
368 afb_req_fail_f (request, "setvol-invalid","command=%s not valid JSON Volume Command", json_object_get_string(commandJ));
373 /* Fulup what's append when channel or vol are invalid ??? */
374 err = UCSI_Vol_Set (&ucsContext->ucsiData, numid, (uint8_t) vol);
376 /* Fulup this might only be a warning (not sure about it) */
377 afb_req_fail_f (request, "vol-refused","command=%s vol was refused by UNICENS", json_object_get_string (volJ));
388 PUBLIC void ucs2SetVol (struct afb_req request) {
389 struct json_object *queryJ;
392 /* check UNICENS is initialised */
394 afb_req_fail_f (request, "UNICENS-init","Should Load Config before using setvol");
398 queryJ = afb_req_json(request);
400 afb_req_fail_f (request, "query-notjson","query=%s not a valid json entry", afb_req_value(request,""));
404 enum json_type jtype= json_object_get_type(queryJ);
406 case json_type_array:
407 for (int idx=0; idx < json_object_array_length (queryJ); idx ++) {
408 err= volSndCmd (request, json_object_array_get_idx (queryJ, idx), ucsContextS);
409 if (err) goto OnErrorExit;
413 case json_type_object:
414 err = volSndCmd (request, queryJ, ucsContextS);
415 if (err) goto OnErrorExit;
419 afb_req_fail_f (request, "query-notarray","query=%s not valid JSON Volume Command Array", afb_req_value(request,""));
424 afb_req_success(request,NULL,NULL);
431 PUBLIC void ucs2Init (struct afb_req request) {
432 static UcsXmlVal_t *ucsConfig;
433 static ucsContextT ucsContext;
435 sd_event_source *evtSource;
438 /* Read and parse XML file */
439 ucsConfig = ParseFile (request);
440 if (NULL == ucsConfig) goto OnErrorExit;
442 /* When ucsContextS is set, do not initalize UNICENS, CDEVs or system hooks, just load new XML */
445 if (!ucsContextS && !InitializeCdevs(&ucsContext)) {
446 afb_req_fail_f (request, "devnit-error", "Fail to initialise device [rx=%s tx=%s]", CONTROL_CDEV_RX, CONTROL_CDEV_TX);
450 /* Initialise UNICENS Config Data Structure */
451 UCSI_Init(&ucsContext.ucsiData, &ucsContext);
453 /* register aplayHandle file fd into binder mainloop */
454 err = sd_event_add_io(afb_daemon_get_event_loop(afbIface->daemon), &evtSource, ucsContext.rx.fileHandle, EPOLLIN, onReadCB, &ucsContext);
456 afb_req_fail_f (request, "register-mainloop", "Cannot hook events to mainloop");
460 /* init UNICENS Volume Library */
461 ucsContext.channels = UCSI_Vol_Init (&ucsContext.ucsiData, volumeCB);
462 if (!ucsContext.channels) {
463 afb_req_fail_f (request, "register-volume", "Could not enqueue new Unicens config");
466 /* save this in a statical variable until ucs2vol move to C */
467 ucsContextS = &ucsContext;
469 /* Initialise UNICENS with parsed config */
470 if (!UCSI_NewConfig(&ucsContext.ucsiData, ucsConfig)) {
471 afb_req_fail_f (request, "UNICENS-init", "Fail to initialize UNICENS");
475 afb_req_success(request,NULL,"UNICENS-active");