From 9ff373cb6574675b9ae03c92d604b7ae87e39156 Mon Sep 17 00:00:00 2001
From: Miika Pekkarinen <miipekk@ihme.org>
Date: Fri, 10 Jun 2005 20:29:35 +0000
Subject: [PATCH] Fixed a null pointer problem which caused crashing. Playback
 should be now more stable.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6660 a1c6a512-1295-4272-9138-f99709370657
---
 apps/playback.c         | 6 ++++--
 firmware/pcm_playback.c | 4 +---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/apps/playback.c b/apps/playback.c
index a804103006..3e046fad6c 100644
--- a/apps/playback.c
+++ b/apps/playback.c
@@ -261,6 +261,7 @@ void* codec_request_buffer_callback(size_t *realsize, size_t reqsize)
     while ((int)*realsize > cur_ti->available) {
         yield();
         if (ci.stop_codec) {
+            *realsize = 0;
             return NULL;
         }
     }
@@ -286,7 +287,7 @@ void codec_advance_buffer_callback(size_t amount)
         codecbufused = 0;
         buf_ridx = buf_widx;
         cur_ti->available = 0;
-        while ((int)amount < cur_ti->available)
+        while ((int)amount < cur_ti->available && !ci.stop_codec)
             yield();
     } else {
         cur_ti->available -= amount;
@@ -427,7 +428,8 @@ void yield_codecs(void)
 #ifndef SIMULATOR
     if (!pcm_is_playing())
         sleep(5);
-    while (pcm_is_lowdata())
+    while (pcm_is_lowdata() && !ci.stop_codec && 
+           playing && queue_empty(&audio_queue))
         yield();
 #else
     yield();
diff --git a/firmware/pcm_playback.c b/firmware/pcm_playback.c
index a4978d645b..50b675734b 100644
--- a/firmware/pcm_playback.c
+++ b/firmware/pcm_playback.c
@@ -240,18 +240,16 @@ void pcm_play_stop(void)
 
 void pcm_play_pause(bool play)
 {
+    pcm_paused = !play;
     if(pcm_paused && play && pcmbuf_unplayed_bytes)
     {
         /* Enable the FIFO and force one write to it */
         IIS2CONFIG = (pcm_freq << 12) | 0x300;
         DCR0 |= DMA_START;
-        
-        pcm_paused = false;
     }
     else if(!pcm_paused && !play)
     {
         IIS2CONFIG = 0x800;
-        pcm_paused = true;
     }
     pcm_boost(false);
 }