Rework PCM buffer

* Linked list instead of static array buffer pointers
* Variable sized chunks
* Improved mix handling
* Reduction in duplicated code
* Reduced IRAM usage w/o sacrificing performance
* Converted to almost entirely unsigned math
* Add pause function to reduce pcm_* exposure to playback.

This WILL break playback on the iPod until linuxstb makes a followup commit.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8612 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 1 insertions, 11 deletions

diff --git a/apps/plugins/metronome.c b/apps/plugins/metronome.c
index 2f897d72a2..ac4a990f61 100644
--- a/apps/plugins/metronome.c
+++ b/apps/plugins/metronome.c
@@ -736,18 +736,8 @@ void prepare_tock(void)
     }
 }
 
-void callback_pcm(unsigned char** start, long* size)
-{
-    if(sound_active) {
-        *start = (unsigned char *)sndbuf;
-        *size = sizeof(sndbuf);
-        sound_active = false;
-    }
-}
-
 void play_tock(void) {
-    sound_active = true;
-    rb->pcm_play_data(callback_pcm);
+    rb->pcm_play_data(NULL,(unsigned char *)sndbuf,sizeof(sndbuf));
     tock++;
 }