PipeWire 1.2.6
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IO area to exchange buffers. More...
#include <spa/node/io.h>
Data Fields | |
int32_t | status |
the status code | |
uint32_t | buffer_id |
a buffer id | |
IO area to exchange buffers.
A set of buffers should first be configured on the node/port. Further references to those buffers will be made by using the id of the buffer.
If status is SPA_STATUS_OK, the host should ignore the io area.
If status is SPA_STATUS_NEED_DATA, the host should: 1) recycle the buffer in buffer_id, if possible 2) prepare a new buffer and place the id in buffer_id.
If status is SPA_STATUS_HAVE_DATA, the host should consume the buffer in buffer_id and set the state to SPA_STATUS_NEED_DATA when new data is requested.
If status is SPA_STATUS_STOPPED, some error occurred on the port.
If status is SPA_STATUS_DRAINED, data from the io area was used to drain.
Status can also be a negative errno value to indicate errors. such as: -EINVAL: buffer_id is invalid -EPIPE: no more buffers available
int32_t spa_io_buffers::status |
the status code
uint32_t spa_io_buffers::buffer_id |
a buffer id