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stream: add flush and drain command

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This commit is contained in:
Wim Taymans 2018-10-09 16:33:54 +02:00
parent 754782f302
commit 9dba8f3a36
3 changed files with 41 additions and 5 deletions
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2
spa/include/spa/graph/graph.h
View file

@ -233,10 +233,10 @@ static inline void
spa_graph_node_add(struct spa_graph *graph,
struct spa_graph_node *node)
{
spa_debug("node %p add to graph %p", node, graph);
node->graph = graph;
spa_list_append(&graph->nodes, &node->link);
spa_graph_link_add(node, graph->state, &node->graph_link);
spa_debug("node %p add to graph %p", node, graph);
}
static inline void spa_graph_node_remove(struct spa_graph_node *node)

29
src/pipewire/stream.c
View file

@ -1223,3 +1223,32 @@ int pw_stream_queue_buffer(struct pw_stream *stream, struct pw_buffer *buffer)
return call_trigger(impl);
}
static int
do_flush(struct spa_loop *loop,
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
{
struct stream *impl = user_data;
struct buffer *b;
pw_log_trace("stream %p: flush", impl);
do {
b = pop_queue(impl, &impl->queued);
if (b != NULL)
push_queue(impl, &impl->dequeued, b);
}
while (b);
impl->time.queued = impl->queued.outcount = impl->dequeued.incount =
impl->dequeued.outcount = impl->queued.incount;
return 0;
}
int pw_stream_flush(struct pw_stream *stream, bool drain)
{
struct stream *impl = SPA_CONTAINER_OF(stream, struct stream, this);
pw_loop_invoke(impl->core->data_loop,
do_flush, 1, NULL, 0, true, impl);
return 0;
}

15
src/pipewire/stream.h
View file

@ -173,7 +173,8 @@ struct pw_buffer {
* returned in the time info. */
};
/** Events for a stream */
/** Events for a stream. These events are always called from the mainloop
* unless explicitly documented otherwise. */
struct pw_stream_events {
#define PW_VERSION_STREAM_EVENTS 0
uint32_t version;
@ -197,6 +198,9 @@ struct pw_stream_events {
* mainloop but can also be called directly from the realtime data
* thread if the user is prepared to deal with this. */
void (*process) (void *data);
/** The stream is drained */
void (*drained) (void *data);
};
/** Convert a stream state to a readable string \memberof pw_stream */
@ -307,9 +311,6 @@ int pw_stream_set_control(struct pw_stream *stream, const char *name, float valu
/** Get a control value */
int pw_stream_get_control(struct pw_stream *stream, const char *name, float *value);
/** Activate or deactivate the stream \memberof pw_stream */
int pw_stream_set_active(struct pw_stream *stream, bool active);
/** A time structure \memberof pw_stream */
struct pw_time {
int64_t now; /**< the monotonic time */
@ -333,6 +334,12 @@ struct pw_buffer *pw_stream_dequeue_buffer(struct pw_stream *stream);
/** Submit a buffer for playback or recycle a buffer for capture. */
int pw_stream_queue_buffer(struct pw_stream *stream, struct pw_buffer *buffer);
/** Activate or deactivate the stream \memberof pw_stream */
int pw_stream_set_active(struct pw_stream *stream, bool active);
/** Flush a stream. When \a drain is true, the drained callback will
* be called when all data is played or recorded */
int pw_stream_flush(struct pw_stream *stream, bool drain);
#ifdef __cplusplus
}