From c3dcc87aa494934943769b70fd752af1271d196a Mon Sep 17 00:00:00 2001
From: Karl Kurbjun <kkurbjun@gmail.com>
Date: Wed, 18 Apr 2007 07:41:31 +0000
Subject: Allow rockboy to run while music is playing with smaller roms.  Works
 on players that do not use the IRAM macros.  Only tested on the Gigabeat as I
 think that is the only player that will run rockboy well with music.  Also
 simplified the sound and reduced the code size a bit.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13199 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/rockboy/rbsound.c | 103 ++++++++++++++---------------------------
 1 file changed, 35 insertions(+), 68 deletions(-)

(limited to 'apps/plugins/rockboy/rbsound.c')

diff --git a/apps/plugins/rockboy/rbsound.c b/apps/plugins/rockboy/rbsound.c
index 41d00c1b73..4e61d5590c 100644
--- a/apps/plugins/rockboy/rbsound.c
+++ b/apps/plugins/rockboy/rbsound.c
@@ -2,30 +2,14 @@
 #include "defs.h"
 #include "pcm.h"
 
-/*#define ONEBUF*/    
-                  /* Note: I think the single buffer implementation is more 
-                   * responsive with sound(less lag) but it creates more 
-                   * choppyness overall to the sound.  2 buffer's don't seem to 
-                   * make a difference, but 4 buffers is definately noticable
-                   */
-
 struct pcm pcm IBSS_ATTR;
 
-bool sound = 1;
-#ifdef ONEBUF
-#define N_BUFS 1
-#else
-#define N_BUFS 4
-#endif
+#define N_BUFS 2
 #define BUF_SIZE 1024
 
 #if CONFIG_CODEC == SWCODEC && !defined(SIMULATOR)
 
-#ifndef ONEBUF
-static short curbuf,gmcurbuf;
-#else
-bool doneplay=0;
-#endif
+bool doneplay=1;
 
 static unsigned char *buf=0;
 static unsigned short *gmbuf;
@@ -34,33 +18,30 @@ static bool newly_started;
 
 void get_more(unsigned char** start, size_t* size)
 {
-#ifdef ONEBUF
-   doneplay=1;
-   *start = (unsigned char*)(gmbuf);
-#else
-   *start = (unsigned char*)(&gmbuf[pcm.len*curbuf]);
-#endif
-   *size = BUF_SIZE*sizeof(short);
+    *start = (unsigned char*)(&gmbuf[pcm.len*doneplay]);
+    *size = BUF_SIZE*sizeof(short);
 }
 
 void pcm_init(void)
 {
+    if(plugbuf)
+        return;
+
     newly_started = true;
     
     pcm.hz = 11025;
     pcm.stereo = 1;
 
     pcm.len = BUF_SIZE;
-    if(!buf){
-      buf = my_malloc(pcm.len * N_BUFS);
-       gmbuf = my_malloc(pcm.len * N_BUFS*sizeof (short));
-       pcm.buf = buf;
-       pcm.pos = 0;
-#ifndef ONEBUF
-      curbuf = gmcurbuf= 0;
-#endif
-      memset(gmbuf, 0, pcm.len * N_BUFS *sizeof(short));
-      memset(buf, 0,  pcm.len * N_BUFS);
+    if(!buf)
+    {
+        buf = my_malloc(pcm.len * N_BUFS);
+        gmbuf = my_malloc(pcm.len * N_BUFS*sizeof (short));
+
+        pcm.buf = buf;
+        pcm.pos = 0;
+        memset(gmbuf, 0, pcm.len * N_BUFS *sizeof(short));
+        memset(buf, 0,  pcm.len * N_BUFS);
     }
 
     rb->pcm_play_stop();
@@ -75,46 +56,32 @@ void pcm_close(void)
     rb->pcm_play_stop();    
     rb->pcm_set_frequency(44100);
 }
-            
+
 int pcm_submit(void)
 {
-    if (!options.sound) return 1;
     register int i;
 
-    if (!sound) {
-        pcm.pos = 0;
-        return 0;
-   }
+    if (pcm.pos < pcm.len) return 1;
 
-   if (pcm.pos < pcm.len) return 1;
+    doneplay=!doneplay;
 
-#ifndef ONEBUF
-   curbuf = (curbuf + 1) % N_BUFS;
-   pcm.buf = buf + pcm.len * curbuf;
-#endif
-   pcm.pos = 0;
+    if(doneplay)
+        pcm.buf = buf + pcm.len;
+    else
+        pcm.buf = buf;
+
+    pcm.pos = 0;
+
+    /* gotta convert the 8 bit buffer to 16 */
+    for(i=0; i<pcm.len;i++)
+        gmbuf[i+pcm.len*doneplay] = (pcm.buf[i]<<8)-0x8000;
+
+    if(newly_started)
+    {
+        rb->pcm_play_data(&get_more,NULL,0);
+        newly_started = false;
+    }
 
-   /* gotta convert the 8 bit buffer to 16 */
-   for(i=0; i<pcm.len;i++)
-#ifdef ONEBUF
-      gmbuf[i] = (pcm.buf[i]<<8)-0x8000;
-#else
-      gmbuf[i+pcm.len*curbuf] = (pcm.buf[i]<<8)-0x8000;
-#endif
-    
-   if(newly_started)
-   {  
-      rb->pcm_play_data(&get_more,NULL,0);
-      newly_started = false;
-   }    
-   
-   /* this while loop and done play are in place to make sure the sound timing 
-    * is correct(although it's not)
-    */
-#ifdef ONEBUF
-   while(doneplay==0) rb->yield();
-   doneplay=0;
-#endif
    return 1;
 }
 #else
-- 
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