C++ (Cpp) OMStoSlot Examples

Example #1

File: OMSbuff_nextts.c Project: iamnpc/fenice-1.11

double OMSbuff_nextts(OMSConsumer *cons)
{
	OMSSlot *last_read;
	OMSSlot *next;

	OMSbuff_lock(cons->buffer);
	
	OMSbuff_shm_refresh(cons->buffer);
	
	last_read = OMStoSlot(cons->buffer, cons->last_read_pos);
	next = &cons->buffer->slots[cons->read_pos];
	
	if ( !next->refs || (next->slot_seq < cons->last_seq) ) {
		// added some slots?
		if ( last_read && cons->buffer->slots[last_read->next].refs && (cons->buffer->slots[last_read->next].slot_seq > cons->last_seq) )
			next = &cons->buffer->slots[last_read->next];
		else {
			OMSbuff_unlock(cons->buffer);
			return -1;
		}
	} else if (last_read && ( cons->buffer->slots[last_read->next].slot_seq < next->slot_seq ) )
			next = &cons->buffer->slots[last_read->next];
	
	OMSbuff_unlock(cons->buffer);
	
	return next->timestamp;
}

Example #2

File: OMSbuff_isempty.c Project: foxyu/Fenice-1.12-with-H.264

/*! Check if buffer is empty for a given consumer. 
 *
 * Checks in this function are taken from <tt>OMSbuff_read()</tt> and not
 * optimized
 *
 * \param Consumer to be checked.
 * \return 1 if buffer is empty, 0 if not.
 * \return -1 on error.
 *
 * \see OMSbuff_read
 * */
int OMSbuff_isempty(OMSConsumer * cons)
{
	OMSSlot *last_read;
	OMSSlot *next;

	OMSbuff_lock(cons->buffer);

	OMSbuff_shm_refresh(cons->buffer);

	last_read = OMStoSlot(cons->buffer, cons->last_read_pos);
	next = &cons->buffer->slots[cons->read_pos];

	if (!next->refs || (next->slot_seq < cons->last_seq)) {
		// added some slots?
		if (last_read && cons->buffer->slots[last_read->next].refs
		    && (cons->buffer->slots[last_read->next].slot_seq >
			cons->last_seq))
			RETURN(0);
		else
			RETURN(1);
	} else if (last_read
		   && (cons->buffer->slots[last_read->next].slot_seq <
		       next->slot_seq))
		RETURN(0);

	OMSbuff_unlock(cons->buffer);

	return 0;
}

Example #3

File: OMSbuff_gotreader.c Project: iamnpc/fenice-1.11

/* ! move current read position
 *
 * \return 1 on error, 0 otherwise
 * */
int32 OMSbuff_gotreader(OMSConsumer *cons)
{
    OMSSlot *last_read;
    OMSSlot *next;

    OMSbuff_lock(cons->buffer);

    if (OMSbuff_shm_refresh(cons->buffer))
        RETURN_ERR

        last_read = OMStoSlot(cons->buffer, cons->last_read_pos);
    next = &cons->buffer->slots[cons->read_pos];

    if ( !next->refs || (next->slot_seq < cons->last_seq) ) {
        // added some slots?
        if ( last_read && cons->buffer->slots[last_read->next].refs && (cons->buffer->slots[last_read->next].slot_seq > cons->last_seq) )
            next = &cons->buffer->slots[last_read->next];
        else
            RETURN_ERR
        } else if (last_read && ( cons->buffer->slots[last_read->next].slot_seq < next->slot_seq ) )