/***********************************************************
* Name: os_cond_wait
*
* Arguments: OS_COND_T *cond,
* OS_SEMAPHORE_T *semaphore
*
* Description: Routine to wait for a condition variable
* to be signalled. Semaphore is released
* while waiting. The same semaphore must
* always be used.
*
* Returns: int32_t - success == 0
*
***********************************************************/
int32_t os_cond_wait( OS_COND_T *cond, OS_SEMAPHORE_T *semaphore )
{
int32_t success = -1;
if (cond && semaphore)
{
COND_WAITER_T w;
COND_WAITER_T *p, **prev;
// Check the API is being followed
os_assert((*cond)->semaphore == semaphore && os_semaphore_obtained(semaphore));
// Fill in a new waiter structure allocated on our stack
w.next = NULL;
vcos_demand(vcos_event_create(&w.latch, NULL) == VCOS_SUCCESS);
// Add it to the end of the condvar's wait queue (we wake first come, first served)
prev = &(*cond)->waiters;
p = (*cond)->waiters;
while (p)
prev = &p->next, p = p->next;
*prev = &w;
// Ready to go to sleep now
success = os_semaphore_release(semaphore);
os_assert(success == 0);
vcos_event_wait(&w.latch);
success = os_semaphore_obtain(semaphore);
os_assert(success == 0);
}
return success;
}
static void __inline remote_event_create(REMOTE_EVENT_T *event)
{
#ifdef VCHIQ_LOCAL
vcos_event_create(&event->event, "vchiq");
#else
event->set_count = 0;
event->clr_count = 0;
local_event_create(&event->local);
#endif
}
int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size)
{
vcos_assert(is_pow2(size));
queue->size = size;
queue->read = 0;
queue->write = 0;
vcos_event_create(&queue->pop, "vchiu");
vcos_event_create(&queue->push, "vchiu");
queue->storage = vcos_malloc(size * sizeof(VCHIQ_HEADER_T *), VCOS_FUNCTION);
if (queue->storage == NULL)
{
vchiu_queue_delete(queue);
return 0;
}
return 1;
}
static int start_monitor( void )
{
if ( vcos_event_create( &quit_event, "smem" ) != VCOS_SUCCESS )
{
vcos_log_info( "Failed to create quit event" );
return -1;
}
// Handle the INT and TERM signals so we can quit
signal( SIGINT, control_c );
signal( SIGTERM, control_c );
return 0;
}
void vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_CHANNEL_T *local, VCHIQ_CHANNEL_T *remote)
{
VCOS_THREAD_ATTR_T attrs;
char threadname[8];
static int id = 0;
vcos_assert(is_pow2(VCHIQ_CHANNEL_SIZE));
vcos_assert(is_pow2(VCHIQ_NUM_CURRENT_BULKS));
vcos_assert(is_pow2(VCHIQ_NUM_SERVICE_BULKS));
vcos_assert(sizeof(VCHIQ_HEADER_T) == 8); /* we require this for consistency between endpoints */
memset(state, 0, sizeof(VCHIQ_STATE_T));
state->id = id++;
/*
initialize events and mutex
*/
vcos_event_create(&state->connect, "vchiq");
vcos_mutex_create(&state->mutex, "vchiq");
/*
initialize channel pointers
*/
state->local = local;
state->remote = remote;
vchiq_init_channel(local);
/*
bring up slot handler thread
*/
vcos_thread_attr_init(&attrs);
vcos_thread_attr_setstacksize(&attrs, VCHIQ_SLOT_HANDLER_STACK);
vcos_thread_attr_setpriority(&attrs, 5); /* FIXME: should not be hardcoded */
vcos_thread_attr_settimeslice(&attrs, 20); /* FIXME: should not be hardcoded */
strcpy(threadname, "VCHIQ-0");
threadname[6] += state->id % 10;
vcos_thread_create(&state->slot_handler_thread, threadname,
&attrs, slot_handler_func, state);
/* Indicate readiness to the other side */
local->initialised = 1;
}
static int start_monitor( void )
{
if ( vcos_event_create( &quit_event, "tvservice" ) != VCOS_SUCCESS )
{
LOG_ERR( "Failed to create quit event" );
return -1;
}
// Handle the INT and TERM signals so we can quit
signal( SIGINT, control_c );
signal( SIGTERM, control_c );
vc_tv_register_callback( &tvservice_callback, NULL );
return 0;
}
bool khrn_worker_init(void)
{
#ifndef KHRN_WORKER_USE_LLAT
VCOS_THREAD_ATTR_T attr;
#endif
vcos_assert(!inited);
khrn_worker_enter_pos = 0;
khrn_worker_exit_pos_0 = 0;
khrn_worker_exit_pos_1 = 0;
khrn_worker_msg.post = msgs;
khrn_worker_msg.done_it = msgs;
khrn_worker_msg.cleanup = msgs;
#ifdef KHRN_WORKER_USE_LLAT
llat_i = khrn_llat_register(khrn_worker_llat_callback);
vcos_assert(llat_i != -1);
#else
if (vcos_event_create(&event, "khrn_worker_event") != VCOS_SUCCESS) {
return false;
}
exit_thread = false;
vcos_thread_attr_init(&attr);
vcos_thread_attr_setpriority(&attr, THREAD_PRIORITY);
#if !defined(V3D_LEAN)
switch (vcos_thread_get_affinity(vcos_thread_current())) {
case VCOS_AFFINITY_CPU0: vcos_thread_attr_setaffinity(&attr, VCOS_AFFINITY_CPU1); break;
case VCOS_AFFINITY_CPU1: vcos_thread_attr_setaffinity(&attr, VCOS_AFFINITY_CPU0); break;
}
vcos_thread_attr_setstacksize(&attr, THREAD_STACK_SIZE);
#endif /* V3D_LEAN */
if (vcos_thread_create(&thread, "khrn_worker_thread", &attr, khrn_worker_main, NULL) != VCOS_SUCCESS) {
vcos_event_delete(&event);
return false;
}
#endif
inited = true;
return true;
}
CComponent::CComponent(std::string sName, CGraph* pGraph) : m_sName(std::move(sName)), m_hComponent(NULL), m_pGraph(pGraph)
{
std::string sStateChangedEventName(m_sName);
sStateChangedEventName.append(":state_changed_event");
CHECK_VCOS(vcos_event_create(&m_StateChangedEvent, sStateChangedEventName.c_str()), "failed to create vcos event");
std::string sEventThreadName(m_sName);
sEventThreadName.append(":event_thread");
m_EventThread.Start(&CComponent::EventThreadProc, this, sEventThreadName.c_str());
std::string sEventQueueMutexName(m_sName);
sEventQueueMutexName.append(":event_queue_mutex");
vcos_mutex_create(&m_EventQueueMutex, sEventThreadName.c_str());
OMX_CALLBACKTYPE Callbacks;
Callbacks.EventHandler = &CComponent::EventHandler;
Callbacks.EmptyBufferDone = &CComponent::EmptyBufferDone;
Callbacks.FillBufferDone = &CComponent::FillBufferDone;
std::string sError("failed to create component ");
sError.append(m_sName);
CHECK_OMX(OMX_GetHandle(&m_hComponent, const_cast<char*>(m_sName.c_str()), this, &Callbacks), sError.c_str());
}
void vc_vchi_khronos_init()
{
VCOS_STATUS_T status = vcos_event_create(&bulk_event, NULL);
assert(status == VCOS_SUCCESS);
if (vchiq_initialise(&khrn_vchiq_instance) != VCHIQ_SUCCESS)
{
KHRONOS_CLIENT_LOG("* failed to open vchiq device\n");
exit(1);
}
KHRONOS_CLIENT_LOG("gldemo: connecting\n");
if (vchiq_connect(khrn_vchiq_instance) != VCHIQ_SUCCESS)
{
KHRONOS_CLIENT_LOG("* failed to connect\n");
exit(1);
}
if (vchiq_open_service(khrn_vchiq_instance, FOURCC_KHAN, khan_callback, NULL, &vchiq_khan_service) != VCHIQ_SUCCESS ||
vchiq_open_service(khrn_vchiq_instance, FOURCC_KHRN, khrn_callback, NULL, &vchiq_khrn_service) != VCHIQ_SUCCESS ||
vchiq_open_service(khrn_vchiq_instance, FOURCC_KHHN, khhn_callback, NULL, &vchiq_khhn_service) != VCHIQ_SUCCESS)
{
KHRONOS_CLIENT_LOG("* failed to add service - already in use?\n");
exit(1);
}
vchiu_queue_init(&khrn_queue, 64);
vchiu_queue_init(&khhn_queue, 64);
KHRONOS_CLIENT_LOG("gldemo: connected\n");
/*
attach to process (there's just one)
*/
// bool success = client_process_attach();
// assert(success);
}
void vc_vchi_gencmd_init (VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections )
{
VCOS_STATUS_T status;
int32_t success;
int i;
if (gencmd_client.initialised)
return;
// record the number of connections
memset( &gencmd_client, 0, sizeof(GENCMD_SERVICE_T) );
gencmd_client.num_connections = (int) num_connections;
status = vcos_mutex_create(&gencmd_client.lock, "HGencmd");
vcos_assert(status == VCOS_SUCCESS);
status = vcos_event_create(&gencmd_client.message_available_event, "HGencmd");
vcos_assert(status == VCOS_SUCCESS);
for (i=0; i<gencmd_client.num_connections; i++) {
// Create a 'LONG' service on the each of the connections
SERVICE_CREATION_T gencmd_parameters = { VCHI_VERSION(VC_GENCMD_VER),
MAKE_FOURCC("GCMD"), // 4cc service code
connections[i], // passed in fn ptrs
0, // tx fifo size (unused)
0, // tx fifo size (unused)
&gencmd_callback, // service callback
&gencmd_client.message_available_event, // callback parameter
VC_FALSE, // want_unaligned_bulk_rx
VC_FALSE, // want_unaligned_bulk_tx
VC_FALSE // want_crc
};
success = vchi_service_open( initialise_instance, &gencmd_parameters, &gencmd_client.open_handle[i] );
assert( success == 0 );
}
gencmd_client.initialised = 1;
release_gencmd_service();
}
void vc_vchi_dispmanx_init (VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections ) {
VCOS_STATUS_T status;
int32_t success;
uint32_t i;
// record the number of connections
memset( &dispmanx_client, 0, sizeof(DISPMANX_SERVICE_T) );
dispmanx_client.num_connections = num_connections;
status = vcos_mutex_create(&dispmanx_client.lock, "HDispmanx");
vcos_assert(status == VCOS_SUCCESS);
status = vcos_event_create(&dispmanx_message_available_event, "HDispmanx");
vcos_assert(status == VCOS_SUCCESS);
status = vcos_event_create(&dispmanx_notify_available_event, "HDispmanx");
vcos_assert(status == VCOS_SUCCESS);
dispmanx_client.initialised = 1;
for (i=0; i<dispmanx_client.num_connections; i++) {
VCOS_THREAD_ATTR_T attrs;
// Create a 'Client' service on the each of the connections
SERVICE_CREATION_T dispmanx_parameters = { DISPMANX_CLIENT_NAME, // 4cc service code
connections[i], // passed in fn ptrs
0, // tx fifo size (unused)
0, // tx fifo size (unused)
&dispmanx_client_callback, // service callback
&dispmanx_message_available_event, // callback parameter
VC_FALSE, // want_unaligned_bulk_rx
VC_FALSE, // want_unaligned_bulk_tx
VC_FALSE, // want_crc
};
SERVICE_CREATION_T dispmanx_parameters2 = { DISPMANX_NOTIFY_NAME, // 4cc service code
connections[i], // passed in fn ptrs
0, // tx fifo size (unused)
0, // tx fifo size (unused)
&dispmanx_notify_callback, // service callback
&dispmanx_notify_available_event, // callback parameter
VC_FALSE, // want_unaligned_bulk_rx
VC_FALSE, // want_unaligned_bulk_tx
VC_FALSE, // want_crc
};
success = vchi_service_open( initialise_instance, &dispmanx_parameters, &dispmanx_client.client_handle[i] );
vcos_assert( success == 0 );
// Create the async service of dispman to handle update callback
success = vchi_service_open( initialise_instance, &dispmanx_parameters2, &dispmanx_client.notify_handle[i] );
vcos_assert( success == 0 );
//Create the notifier task
vcos_thread_attr_init(&attrs);
vcos_thread_attr_setstacksize(&attrs, 2048);
vcos_thread_attr_settimeslice(&attrs, 1);
status = vcos_thread_create(&dispmanx_notify_task, "HDispmanx Notify", &attrs, dispmanx_notify_func, NULL);
vcos_assert(status == VCOS_SUCCESS);
// release services until they're actually used
vchi_service_release(dispmanx_client.client_handle[i]);
vchi_service_release(dispmanx_client.notify_handle[i]);
}
}
static void __inline local_event_create(LOCAL_EVENT_T *event)
{
vcos_event_create(&event->event, "vchiq");
}
CThreadT() : m_pInstance(NULL), m_pThreadProc(NULL)
{
CHECK_VCOS(vcos_event_create(&m_InitializedEvent, ""), "failed to create thread initialization event");
CHECK_VCOS(vcos_event_flags_create(&m_EventFlags, ""), "failed to create thread event flags");
}
