output_api: play() returns a length

The old API required an output plugin to not return until all data
passed to the play() method is consumed.  Some output plugins have to
loop to fulfill that requirement, and may block during that.  Simplify
these, by letting them consume only part of the buffer: make play()
return the length of the consumed data.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/output/pulse_plugin.c b/src/output/pulse_plugin.c
index 559d2ee56..0203310e7 100644
--- a/src/output/pulse_plugin.c
+++ b/src/output/pulse_plugin.c
@@ -160,7 +160,7 @@ static void pulse_close(void *data)
 	}
 }
 
-static bool
+static size_t
 pulse_play(void *data, const char *playChunk, size_t size)
 {
 	struct pulse_data *pd = data;
@@ -172,10 +172,10 @@ pulse_play(void *data, const char *playChunk, size_t size)
 			  audio_output_get_name(pd->ao),
 			  pa_strerror(error));
 		pulse_close(pd);
-		return false;
+		return 0;
 	}
 
-	return true;
+	return size;
 }
 
 const struct audio_output_plugin pulse_plugin = {