/** Send a buffer header to a port */
MMAL_STATUS_T mmal_port_send_buffer(MMAL_PORT_T *port,
MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_STATUS_T status;
if (!port || !port->priv)
{
LOG_ERROR("invalid port");
return MMAL_EINVAL;
}
#ifdef ENABLE_MMAL_EXTRA_LOGGING
LOG_TRACE("%s(%i:%i) port %p, buffer %p (%p,%i,%i)",
port->component->name, (int)port->type, (int)port->index, port, buffer,
buffer ? buffer->data: 0, buffer ? (int)buffer->offset : 0,
buffer ? (int)buffer->length : 0);
#endif
if (!buffer->data && !(port->capabilities & MMAL_PORT_CAPABILITY_PASSTHROUGH))
{
LOG_ERROR("%s(%p) received invalid buffer header", port->name, port);
return MMAL_EINVAL;
}
if (!port->priv->pf_send)
return MMAL_ENOSYS;
LOCK_SENDING(port);
if (!port->is_enabled)
{
UNLOCK_SENDING(port);
return MMAL_EINVAL;
}
if (port->type == MMAL_PORT_TYPE_OUTPUT && buffer->length)
{
LOG_DEBUG("given an output buffer with length != 0");
buffer->length = 0;
}
IN_TRANSIT_INCREMENT(port);
status = port->priv->pf_send(port, buffer);
if (status != MMAL_SUCCESS)
{
IN_TRANSIT_DECREMENT(port);
LOG_ERROR("%s: send failed: %s", port->name, mmal_status_to_string(status));
}
else
{
mmal_port_update_port_stats(port, MMAL_CORE_STATS_RX);
}
UNLOCK_SENDING(port);
return status;
}
/** Buffer header callback. */
void mmal_port_buffer_header_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
#ifdef ENABLE_MMAL_EXTRA_LOGGING
LOG_TRACE("%s(%i:%i) port %p, buffer %p (%i,%p,%i,%i)",
port->component->name, (int)port->type, (int)port->index, port, buffer,
buffer ? (int)buffer->cmd : 0, buffer ? buffer->data : 0,
buffer ? (int)buffer->offset : 0, buffer ? (int)buffer->length : 0);
#endif
if (!vcos_verify(IN_TRANSIT_COUNT(port) >= 0))
LOG_ERROR("%s: buffer headers in transit < 0 (%d)", port->name, (int)IN_TRANSIT_COUNT(port));
if (MMAL_COLLECT_PORT_STATS_ENABLED)
{
mmal_port_update_port_stats(port, MMAL_CORE_STATS_TX);
}
port->priv->core->buffer_header_callback(port, buffer);
IN_TRANSIT_DECREMENT(port);
}
/** Send a buffer header to a port */
MMAL_STATUS_T mmal_port_send_buffer(MMAL_PORT_T *port,
MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_STATUS_T status = MMAL_SUCCESS;
if (!port || !port->priv)
{
LOG_ERROR("invalid port");
return MMAL_EINVAL;
}
#ifdef ENABLE_MMAL_EXTRA_LOGGING
LOG_TRACE("%s(%i:%i) port %p, buffer %p (%p,%i,%i)",
port->component->name, (int)port->type, (int)port->index, port, buffer,
buffer ? buffer->data: 0, buffer ? (int)buffer->offset : 0,
buffer ? (int)buffer->length : 0);
#endif
if (!buffer->data && !(port->capabilities & MMAL_PORT_CAPABILITY_PASSTHROUGH))
{
LOG_ERROR("%s(%p) received invalid buffer header", port->name, port);
return MMAL_EINVAL;
}
if (!port->priv->pf_send)
return MMAL_ENOSYS;
LOCK_SENDING(port);
if (!port->is_enabled)
{
UNLOCK_SENDING(port);
return MMAL_EINVAL;
}
if (port->type == MMAL_PORT_TYPE_OUTPUT && buffer->length)
{
LOG_DEBUG("given an output buffer with length != 0");
buffer->length = 0;
}
/* coverity[lock] transit_sema is used for signalling, and is not a lock */
/* coverity[lock_order] since transit_sema is not a lock, there is no ordering conflict */
IN_TRANSIT_INCREMENT(port);
if (port->priv->core->is_paused)
{
/* Add buffer to our internal queue */
buffer->next = NULL;
*port->priv->core->queue_last = buffer;
port->priv->core->queue_last = &buffer->next;
}
else
{
/* Send buffer to component */
status = port->priv->pf_send(port, buffer);
}
if (status != MMAL_SUCCESS)
{
IN_TRANSIT_DECREMENT(port);
LOG_ERROR("%s: send failed: %s", port->name, mmal_status_to_string(status));
}
else
{
mmal_port_update_port_stats(port, MMAL_CORE_STATS_RX);
}
UNLOCK_SENDING(port);
return status;
}