use size_t and constant pointer in ao plugins

The audio output plugins should get a constant pointer, because they
must not modify the buffer.  Since the size is a non-negative buffer
size in bytes, we should change its type to size_t.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7293 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 3 insertions, 2 deletions

diff --git a/src/audioOutput.h b/src/audioOutput.h
index 3953d2621..577ba2014 100644
--- a/src/audioOutput.h
+++ b/src/audioOutput.h
@@ -43,7 +43,7 @@ typedef void (*AudioOutputFinishDriverFunc) (AudioOutput * audioOutput);
 typedef int (*AudioOutputOpenDeviceFunc) (AudioOutput * audioOutput);
 
 typedef int (*AudioOutputPlayFunc) (AudioOutput * audioOutput,
-				    char *playChunk, int size);
+				    const char *playChunk, size_t size);
 
 typedef void (*AudioOutputDropBufferedAudioFunc) (AudioOutput * audioOutput);
 
@@ -97,7 +97,8 @@ void unloadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin);
 
 int initAudioOutput(AudioOutput *, ConfigParam * param);
 int openAudioOutput(AudioOutput * audioOutput, AudioFormat * audioFormat);
-int playAudioOutput(AudioOutput * audioOutput, char *playChunk, int size);
+int playAudioOutput(AudioOutput * audioOutput,
+		    const char *playChunk, size_t size);
 void dropBufferedAudioOutput(AudioOutput * audioOutput);
 void closeAudioOutput(AudioOutput * audioOutput);
 void finishAudioOutput(AudioOutput * audioOutput);