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, format);
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);
108 * \brief Callback when ever an Unicens forms a human readable message.
109 * This can be error events or when enabled also debug messages.
110 * \note This function must be implemented by the integrator
111 * \param pTag - Pointer given by the integrator by UCSI_Init
112 * \param format - Zero terminated format string (following printf rules)
113 * \param vargsCnt - Amount of parameters stored in "..."
115 void UCSI_CB_OnUserMessage(void *pTag, bool isError, const char format[],
116 uint16_t vargsCnt, ...) {
120 va_start(argptr, vargsCnt);
121 vsprintf(outbuf, format, argptr);
124 NOTICE (afbIface, outbuf);
127 // UCSI_Service cannot be call directly within Unicens context, need to reset stack through mainloop
128 STATIC int OnServiceRequiredCB (sd_event_source *source, uint64_t usec, void *pTag) {
129 ucsContextT *ucsContext = (ucsContextT*) pTag;
131 sd_event_source_unref(source);
132 UCSI_Service(&ucsContext->ucsiData);
136 // UCS Callback fire when ever pTag instance needs to be serviced
137 PUBLIC void UCSI_CB_OnServiceRequired(void *pTag) {
139 // push an asynchronous request for loopback to call UCSI_Service
140 sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, 0, 0, OnServiceRequiredCB, pTag);
143 // Callback when ever this instance wants to send a message to INIC.
144 // BUGS?? Sample was returning true/false on error when integration layer expect a void [question from Fulup to Thorsten]
145 PUBLIC void UCSI_CB_OnTxRequest(void *pTag, const uint8_t *pData, uint32_t len) {
147 ucsContextT *ucsContext = (ucsContextT*) pTag;
148 CdevData_t *cdevTx = &ucsContext->tx;
152 if (NULL == pData || 0 == len) return;
154 if (O_RDONLY == cdevTx->fileFlags) return;
155 if (-1 == cdevTx->fileHandle)
156 cdevTx->fileHandle = open(cdevTx->fileName, cdevTx->fileFlags);
157 if (-1 == cdevTx->fileHandle)
161 ssize_t written = write(cdevTx->fileHandle, &pData[total], (len - total));
164 cdevTx->fileHandle = -1;
167 total += (uint32_t) written;
174 * \brief Callback when Unicens instance has been stopped.
175 * \note This event can be used to free memory holding the resources
176 * passed with UCSI_NewConfig
177 * \note This function must be implemented by the integrator
178 * \param pTag - Pointer given by the integrator by UCSI_Init
180 void UCSI_CB_OnStop(void *pTag) {
181 NOTICE (afbIface, "Unicens stopped");
185 /** This callback will be raised, when ever an applicative message on the control channel arrived */
186 void UCSI_CB_OnAmsMessageReceived(void *pTag)
188 /* If not interested, just ignore this event.
189 Otherwise UCSI_GetAmsMessage may now be called asynchronous (mainloop) to get the content.
190 Don't forget to call UCSI_ReleaseAmsMessage after that */
193 bool Cdev_Init(CdevData_t *d, const char *fileName, bool read, bool write)
195 if (NULL == d || NULL == fileName) goto OnErrorExit;
197 memset(d, 0, sizeof(CdevData_t));
198 strncpy(d->fileName, fileName, MAX_FILENAME_LEN);
202 d->fileFlags = O_RDWR | O_NONBLOCK;
204 d->fileFlags = O_RDONLY | O_NONBLOCK;
206 d->fileFlags = O_WRONLY | O_NONBLOCK;
208 // open file to enable event loop
209 d->fileHandle = open(d->fileName, d->fileFlags);
210 if (d->fileHandle <= 0) goto OnErrorExit;
218 static bool InitializeCdevs(ucsContextT *ucsContext)
220 if(!Cdev_Init(&ucsContext->tx, CONTROL_CDEV_TX, false, true))
222 if(!Cdev_Init(&ucsContext->rx, CONTROL_CDEV_RX, true, false))
227 // Callback fire when something is avaliable on MOST cdev
228 int onReadCB (sd_event_source* src, int fileFd, uint32_t revents, void* pTag) {
229 ucsContextT *ucsContext =( ucsContextT*) pTag;
231 uint8_t pBuffer[RX_BUFFER];
234 len = read (ucsContext->rx.fileHandle, &pBuffer, sizeof(pBuffer));
237 ok= UCSI_ProcessRxData(&ucsContext->ucsiData, pBuffer, (uint16_t)len);
239 DEBUG (afbIface, "Buffer overrun (not handle)");
240 // Buffer overrun could replay pBuffer
245 STATIC UcsXmlVal_t* ParseFile(struct afb_req request) {
250 UcsXmlVal_t* ucsConfig;
252 const char *filename = afb_req_value(request, "filename");
254 afb_req_fail_f (request, "filename-missing", "No filename given");
258 fdHandle = open(filename, O_RDONLY);
260 afb_req_fail_f (request, "fileread-error", "File not accessible: '%s' err=%s", filename, strerror(fdHandle));
264 // read file into buffer as a \0 terminated string
265 fstat(fdHandle, &fdStat);
266 xmlBuffer = (char*)alloca(fdStat.st_size + 1);
267 readSize = read(fdHandle, xmlBuffer, fdStat.st_size);
269 xmlBuffer[readSize] = '\0'; //In any case, terminate it.
271 if (readSize != fdStat.st_size) {
272 afb_req_fail_f (request, "fileread-fail", "File to read fullfile '%s' size(%d!=%d)", filename, readSize, fdStat.st_size);
276 ucsConfig = UcsXml_Parse(xmlBuffer);
278 afb_req_fail_f (request, "filexml-error", "File XML invalid: '%s'", filename);
288 STATIC int volOnSvcCB (sd_event_source* source,uint64_t timer, void* pTag) {
289 ucsContextT *ucsContext = (ucsContextT*) pTag;
291 sd_event_source_unref(source);
292 UCSI_Vol_Service(&ucsContext->ucsiData);
297 // This callback is fire each time an volume event wait in the queue
298 void volumeCB (uint16_t timeout) {
300 sd_event_now(afb_daemon_get_event_loop(afbIface->daemon), CLOCK_BOOTTIME, &usec);
301 sd_event_add_time(afb_daemon_get_event_loop(afbIface->daemon), NULL, CLOCK_MONOTONIC, usec + (timeout*1000), 250, volOnSvcCB, ucsContextS);
304 STATIC int volSndCmd (struct afb_req request, struct json_object *commandJ, ucsContextT *ucsContext) {
306 struct json_object *nameJ, *channelJ, *volJ;
308 enum json_type jtype= json_object_get_type(commandJ);
310 case json_type_array:
311 if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 0)), "%d", &numid)) {
312 afb_req_fail_f (request, "channel-invalid","command=%s channel is not an integer", json_object_get_string (channelJ));
315 if (!sscanf (json_object_get_string (json_object_array_get_idx(commandJ, 1)), "%d", &vol)) {
316 afb_req_fail_f (request, "vol-invalid","command=%s vol is not an integer", json_object_get_string (channelJ));
321 case json_type_object:
322 if (json_object_object_get_ex (commandJ, "numid", &channelJ)) {
323 if (!sscanf (json_object_get_string (channelJ), "%d", &numid)) {
324 afb_req_fail_f (request, "channel-invalid","command=%s numid is not an integer", json_object_get_string (channelJ));
328 if (json_object_object_get_ex (commandJ, "channel", &nameJ)) {
330 const char *name = json_object_get_string(nameJ);
332 for (idx =0; ucsContext->channels[idx].name != NULL; idx++) {
333 if (!strcasecmp(ucsContext->channels[idx].name, name)) {
334 numid = ucsContext->channels[idx].numid;
338 if (ucsContext->channels[idx].name == NULL) {
339 afb_req_fail_f (request, "channel-invalid","command=%s channel name does not exist", name);
343 afb_req_fail_f (request, "channel-invalid","command=%s no valid channel name or channel", json_object_get_string(commandJ));
348 if (!json_object_object_get_ex (commandJ, "volume", &volJ)) {
349 afb_req_fail_f (request, "vol-missing","command=%s vol not present", json_object_get_string (commandJ));
353 if (!sscanf (json_object_get_string (volJ), "%d", &vol)) {
354 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));
361 afb_req_fail_f (request, "setvol-invalid","command=%s not valid JSON Volume Command", json_object_get_string(commandJ));
366 // Fulup what's append when channel or vol are invalid ???
367 err = UCSI_Vol_Set (&ucsContext->ucsiData, numid, (uint8_t) vol);
369 // Fulup this might only be a warning (not sure about it)
370 afb_req_fail_f (request, "vol-refused","command=%s vol was refused by UNICENS", json_object_get_string (volJ));
381 PUBLIC void ucs2SetVol (struct afb_req request) {
382 struct json_object *queryJ;
385 // check UNICENS is initialised
387 afb_req_fail_f (request, "UNICENS-init","Should Load Config before using setvol");
391 queryJ = afb_req_json(request);
393 afb_req_fail_f (request, "query-notjson","query=%s not a valid json entry", afb_req_value(request,""));
397 enum json_type jtype= json_object_get_type(queryJ);
399 case json_type_array:
400 for (int idx=0; idx < json_object_array_length (queryJ); idx ++) {
401 err= volSndCmd (request, json_object_array_get_idx (queryJ, idx), ucsContextS);
402 if (err) goto OnErrorExit;
406 case json_type_object:
407 err = volSndCmd (request, queryJ, ucsContextS);
408 if (err) goto OnErrorExit;
412 afb_req_fail_f (request, "query-notarray","query=%s not valid JSON Volume Command Array", afb_req_value(request,""));
417 afb_req_success(request,NULL,NULL);
424 PUBLIC void ucs2Init (struct afb_req request) {
425 static UcsXmlVal_t *ucsConfig;
426 static ucsContextT ucsContext;
428 sd_event_source *evtSource;
431 // Read and parse XML file
432 ucsConfig = ParseFile (request);
433 if (NULL == ucsConfig) goto OnErrorExit;
435 // Fulup->Thorsten BUG InitializeCdevs should fail when control does not exit
436 if (!InitializeCdevs(&ucsContext)) {
437 afb_req_fail_f (request, "devnit-error", "Fail to initialise device [rx=%s tx=%s]", CONTROL_CDEV_RX, CONTROL_CDEV_TX);
441 // Initialise Unicens Config Data Structure
442 UCSI_Init(&ucsContext.ucsiData, &ucsContext);
444 // Initialise Unicens with parsed config
445 if (!UCSI_NewConfig(&ucsContext.ucsiData, ucsConfig)) {
446 afb_req_fail_f (request, "UNICENS-init", "Fail to initialize Unicens");
450 // register aplayHandle file fd into binder mainloop
451 err = sd_event_add_io(afb_daemon_get_event_loop(afbIface->daemon), &evtSource, ucsContext.rx.fileHandle, EPOLLIN, onReadCB, &ucsContext);
453 afb_req_fail_f (request, "register-mainloop", "Cannot hook events to mainloop");
457 // init Unicens Volume Library
458 ucsContext.channels = UCSI_Vol_Init (&ucsContext.ucsiData, volumeCB);
459 if (!ucsContext.channels) {
460 afb_req_fail_f (request, "register-volume", "Could not enqueue new Unicens config");
463 // save this in a statical variable until ucs2vol move to C
464 ucsContextS = &ucsContext;
466 afb_req_success(request,NULL,"UNICENS-active");