diff options
Diffstat (limited to 'Alsa-Plugin/Alsa-Policy-Hook')
| -rw-r--r-- | Alsa-Plugin/Alsa-Policy-Hook/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | Alsa-Plugin/Alsa-Policy-Hook/PolicyHookCb.c (renamed from Alsa-Plugin/Alsa-Policy-Hook/AlsaHookCb.c) | 151 | ||||
| -rw-r--r-- | Alsa-Plugin/Alsa-Policy-Hook/README.md | 34 |
3 files changed, 128 insertions, 61 deletions
diff --git a/Alsa-Plugin/Alsa-Policy-Hook/CMakeLists.txt b/Alsa-Plugin/Alsa-Policy-Hook/CMakeLists.txt index 3780ee5..e8342a1 100644 --- a/Alsa-Plugin/Alsa-Policy-Hook/CMakeLists.txt +++ b/Alsa-Plugin/Alsa-Policy-Hook/CMakeLists.txt @@ -20,10 +20,10 @@ add_compile_options(-DPIC) -PROJECT_TARGET_ADD(alsa_hook_cb) +PROJECT_TARGET_ADD(policy_hook_cb) # Define targets - ADD_LIBRARY(${TARGET_NAME} MODULE AlsaHookCb.c) + ADD_LIBRARY(${TARGET_NAME} MODULE PolicyHookCb.c) # Alsa Plugin properties SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES diff --git a/Alsa-Plugin/Alsa-Policy-Hook/AlsaHookCb.c b/Alsa-Plugin/Alsa-Policy-Hook/PolicyHookCb.c index 2675805..ae2a5a3 100644 --- a/Alsa-Plugin/Alsa-Policy-Hook/AlsaHookCb.c +++ b/Alsa-Plugin/Alsa-Policy-Hook/PolicyHookCb.c @@ -50,6 +50,12 @@ // this should be more than enough #define MAX_API_CALL 10 + +// timeout in ms +#define REQUEST_DEFAULT_TIMEOUT 100 +#ifndef MAINLOOP_WATCHDOG +#define MAINLOOP_WATCHDOG 60000 +#endif // Currently not implemented #define UNUSED(x) UNUSED_ ## x __attribute__((__unused__)) @@ -81,7 +87,7 @@ typedef struct { static void *LoopInThread(void *handle) { afbClientT *afbClient = (afbClientT*) handle; int count=0; - int watchdog= 60 *1000000; + int watchdog= MAINLOOP_WATCHDOG *1000; /* loop until end */ for (;;) { @@ -97,35 +103,93 @@ static void *LoopInThread(void *handle) { static void OnHangupCB(void *handle, struct afb_wsj1 *wsj1) { afbClientT *afbClient = (afbClientT*) handle; - snd_pcm_close (afbClient->pcm); - SNDERR("(Hoops) Lost Connection to %s", afbClient->uri); - exit(0); + + // try to close PCM when impossible terminate client + int err = snd_pcm_close (afbClient->pcm); + if (err) exit(1); +} + +// supported action +typedef enum { + ACTION_PAUSE, + ACTION_START, + ACTION_STOP, + ACTION_RESUME, + + ACTION_NONE +} evtActionEnumT; + +// action label/enum map +const char *evtActionLabels[] ={ + [ACTION_PAUSE] = "pause", + [ACTION_START] = "start", + [ACTION_STOP] = "stop", + [ACTION_RESUME]= "resume", + + [ACTION_NONE]=NULL +}; + +static evtActionEnumT getActionEnum (const char *label) { + int idx; + + if (!label) return ACTION_NONE; + + for (idx = 0; evtActionLabels[idx] != NULL; idx++) { + if (! strcmp(evtActionLabels[idx], label)) break; + } + + if (evtActionLabels[idx]) return idx; + else return ACTION_NONE; } void OnEventCB(void *handle, const char *event, struct afb_wsj1_msg *msg) { afbClientT *afbClient = (afbClientT*) handle; - int err; + json_object *eventJ, *tmpJ, *dataJ; + const char *action; + int err, value, done; - printf("ON-EVENT %s(%s)\n", event, afb_wsj1_msg_object_s(msg)); - // pause PCM until request call succeed - err = snd_pcm_pause (afbClient->pcm, 1); - if (err < 0) { - fprintf (stderr, "PCM Fail to pause\n"); + eventJ = afb_wsj1_msg_object_j(msg); + done= json_object_object_get_ex(eventJ,"data", &dataJ); + if (!done) { + SNDERR ("PCM_HOOK: uri=%s empty event action", afbClient->uri); goto OnErrorExit; - } + } + + json_object_object_get_ex(dataJ,"action", &tmpJ); + action=json_object_get_string(tmpJ); - // wait on a semaphore until request return or timeout - err = snd_pcm_pause (afbClient->pcm, 0); - if (err < 0) { - fprintf (stderr, "PCM Fail to resume\n"); - goto OnErrorExit; + json_object_object_get_ex(dataJ,"value", &tmpJ); + value=json_object_get_int(tmpJ); + + switch (getActionEnum(action)) { + case ACTION_PAUSE: + err = snd_pcm_pause (afbClient->pcm, value); + if (err < 0) SNDERR ("PCM_HOOK: Fail to pause value=%d\n", value); + break; + + case ACTION_STOP: + err = snd_pcm_drop (afbClient->pcm); + if (err < 0) SNDERR ("PCM_HOOK: Fail to close\n"); + break; + + case ACTION_START: + err = snd_pcm_resume (afbClient->pcm); + if (err < 0) SNDERR ("PCM_HOOK: Fail to start\n"); + break; + + default: + SNDERR ("PCM_HOOK: Unsupported Event uri=%s action=%s", afbClient->uri, action); + goto OnErrorExit; } -OnErrorExit: + if (afbClient->verbose) printf("ON-EVENT action=%s value=%d\n", action, value); return; +OnErrorExit: + SNDERR("ON-EVENT %s(%s)\n", event, afb_wsj1_msg_object_s(msg)); + return; } // callback interface for wsj1 @@ -135,11 +199,6 @@ static struct afb_wsj1_itf itf = { .on_event = OnEventCB }; -void OnAbortPcm (afbClientT *afbClient) { - printf("ON-ABORT-PCM PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri); - snd_pcm_close (afbClient->pcm); -} - void OnResponseCB(void *handle, struct afb_wsj1_msg *msg) { afbRequestT *afbRequest= (afbRequestT*)handle; @@ -148,10 +207,7 @@ void OnResponseCB(void *handle, struct afb_wsj1_msg *msg) { // Cancel timeout for this request sd_event_source_unref(afbRequest->evtSource); - if (! afb_wsj1_msg_is_reply_ok(msg)) { - fprintf(stderr, "ON-RESPONSE ERROR call=%s response=%s\n", afbRequest->callIdTag, afb_wsj1_msg_object_s(msg)); - OnAbortPcm (afbRequest->afbClient); - } + if (! afb_wsj1_msg_is_reply_ok(msg)) goto OnErrorExit; // When not more waiting call release semaphore afbRequest->afbClient->count--; @@ -160,12 +216,18 @@ void OnResponseCB(void *handle, struct afb_wsj1_msg *msg) { afbRequest->afbClient->error=0; sem_post (&afbRequest->afbClient->semaphore); } + return; + +OnErrorExit: + fprintf(stderr, "ON-RESPONSE ERROR call=%s response=%s\n", afbRequest->callIdTag, afb_wsj1_msg_object_s(msg)); + afbRequest->afbClient->error=1; + sem_post (&afbRequest->afbClient->semaphore); } int OnTimeoutCB (sd_event_source* source, uint64_t timer, void* handle) { afbClientT *afbClient= (afbClientT*)handle; - fprintf(stderr, "ON-TIMEOUT Call Request Fail URI=%s\n", afbClient->uri); + SNDERR("\nON-TIMEOUT Call Request Fail URI=%s\n", afbClient->uri); // Close PCM and release waiting client afbClient->error=1; @@ -181,14 +243,14 @@ static int CallWithTimeout(afbClientT *afbClient, afbRequestT *afbRequest, int c // create a unique tag for request (void) asprintf(&afbRequest->callIdTag, "%d:%s/%s", count, afbRequest->api, afbRequest->verb); - - err = afb_wsj1_call_s(afbClient->wsj1, afbRequest->api, afbRequest->verb, afbRequest->query, OnResponseCB, afbRequest); - if (err) goto OnErrorExit; // create a timer with ~250us accuracy sd_event_now(afbClient->sdLoop, CLOCK_MONOTONIC, &usec); sd_event_add_time(afbClient->sdLoop, &afbRequest->evtSource, CLOCK_MONOTONIC, usec+afbRequest->timeout*1000, 250, OnTimeoutCB, afbClient); + err = afb_wsj1_call_s(afbClient->wsj1, afbRequest->api, afbRequest->verb, afbRequest->query, OnResponseCB, afbRequest); + if (err) goto OnErrorExit; + // save client handle in request afbRequest->afbClient = afbClient; afbClient->count ++; @@ -204,6 +266,11 @@ static int LaunchCallRequest(afbClientT *afbClient, afbRequestT **afbRequest) { pthread_t tid; int err, idx; + // init waiting counting semaphore + if (sem_init(&afbClient->semaphore, 1, 0) == -1) { + fprintf(stderr, "LaunchCallRequest: Fail Semaphore Init: %s\n", afbClient->uri); + } + // Create a main loop err = sd_event_default(&afbClient->sdLoop); if (err < 0) { @@ -211,10 +278,9 @@ static int LaunchCallRequest(afbClientT *afbClient, afbRequestT **afbRequest) { goto OnErrorExit; } - // init waiting counting semaphore - if (sem_init(&afbClient->semaphore, 1, 0) == -1) { - fprintf(stderr, "LaunchCallRequest: Fail Semaphore Init: %s\n", afbClient->uri); - } + // start a thread with a mainloop to monitor Audio-Agent + err = pthread_create(&tid, NULL, &LoopInThread, afbClient); + if (err) goto OnErrorExit; // connect the websocket wsj1 to the uri given by the first argument afbClient->wsj1 = afb_ws_client_connect_wsj1(afbClient->sdLoop, afbClient->uri, &itf, afbClient); @@ -235,10 +301,6 @@ static int LaunchCallRequest(afbClientT *afbClient, afbRequestT **afbRequest) { // launch counter to keep track of waiting request call afbClient->count=idx; - // start a thread with a mainloop to monitor Audio-Agent - err = pthread_create(&tid, NULL, &LoopInThread, afbClient); - if (err) goto OnErrorExit; - return 0; OnErrorExit: @@ -249,7 +311,7 @@ static int AlsaCloseHook(snd_pcm_hook_t *hook) { afbClientT *afbClient = (afbClientT*) snd_pcm_hook_get_private (hook); - if (afbClient->verbose) fprintf(stdout, "\nAlsaCloseHook pcm=%s uri=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri); + if (afbClient->verbose) fprintf(stdout, "\nAlsaCloseHook pcm=%s\n", snd_pcm_name(afbClient->pcm)); return 0; } @@ -277,10 +339,12 @@ int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) { if (strcmp(id, "comment") == 0 || strcmp(id, "hint") == 0) continue; if (strcmp(id, "uri") == 0) { - if (snd_config_get_string(node, &afbClient->uri) < 0) { + const char *uri; + if (snd_config_get_string(node, &uri) < 0) { SNDERR("Invalid String for %s", id); goto OnErrorExit; } + afbClient->uri=strdup(uri); continue; } @@ -324,10 +388,7 @@ int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) { } // allocate an empty call request - afbRequest[callCount] = malloc(sizeof (afbRequestT)); - afbRequest[callCount]->api=NULL; - afbRequest[callCount]->verb=NULL; - afbRequest[callCount]->query=NULL; + afbRequest[callCount] = calloc(1, sizeof (afbRequestT)); err = snd_config_search(ctlconfig, "api", &itemConf); @@ -376,7 +437,7 @@ int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) { // Simple check on call request validity if (!afbRequest[callCount]->query) afbRequest[callCount]->query= ""; - if (!afbRequest[callCount]->timeout) afbRequest[callCount]->timeout=100; + if (!afbRequest[callCount]->timeout) afbRequest[callCount]->timeout=REQUEST_DEFAULT_TIMEOUT ; if (!afbRequest[callCount]->verb || !afbRequest[callCount]->api) { SNDERR("Missing api/verb %s in asoundrc", callLabel); goto OnErrorExit; diff --git a/Alsa-Plugin/Alsa-Policy-Hook/README.md b/Alsa-Plugin/Alsa-Policy-Hook/README.md index 108c2b5..ce0553c 100644 --- a/Alsa-Plugin/Alsa-Policy-Hook/README.md +++ b/Alsa-Plugin/Alsa-Policy-Hook/README.md @@ -27,27 +27,33 @@ pcm_hook_type.MyHookPlugin { # -------------------------------------------------------------------- pcm.MyNavigationHook { type hooks - slave.pcm "MyMixerPCM" # Target PCM to effectively play sound + slave.pcm "MyMixerPCM" - # Call request that should succeed before accessing slave PCM + # Defined used hook sharelib and provide arguments/config to install func hooks.0 { - type "MyHookPlugin" # Name=xxxx should match with pcm_hook_type.xxxx + type "MyHookPlugin" hook_args { + verbose true # print few log messages (default false); - # URI to AGL-Advance-Audio-Agent binder + # Every Call should return OK in order PCM to open (default timeout 100ms) uri "ws://localhost:1234/api?token='audio-agent-token'" - - # Call request to send to binder (initial label is free, query is optional) request { - MyFirstCheck { - api "alsacore" - verb "ping" + # Request autorisation to write on navigation + RequestNavigation { + api "polctl" + verb "navigation" } - MySecondCheck { - api "alsacore" - verb "ucmset" - query "{'devid':'hw:v1340','verb':'Navigation','dev':'speakers'}" - } + # subscribe to Audio Agent Event + SubscriveEvents { + api "polctl" + verb "monitor" + } + # force PCM stop after 10s + TestAutoStop { + api "polctl" + verb "event_test" + query "{'label':'stop', 'delay':10000}" + } } } } |