First take at PCM playback in the X11 sim on Linux.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7147 a1c6a512-1295-4272-9138-f99709370657

tools/configure

@@ -12,6 +12,7 @@
 CCOPTS="-W -Wall -O -nostdlib -ffreestanding -Wstrict-prototypes"
 
 use_logf="#undef ROCKBOX_HAS_LOGF"
+use_simsound="#undef ROCKBOX_HAS_SIMSOUND"
 
 scriptver=`echo '$Revision$' | sed -e 's:\\$::g' -e 's/Revision: //'`
 
@@ -82,7 +83,14 @@ simcc () {
    LDOPTS='-L/usr/X11R6/lib -lX11 -lm -lXt -lXmu -lnsl -ldl -lpthread'
    if [ "$simver" = "win32" ]; then
      crosswincc # setup cross-compiler
-   fi
+   else
+     if test -n "$codecs"; then
+       if test -f "/usr/include/linux/soundcard.h"; then
+         # We have a header file so we can build the sound code
+         use_simsound="#define ROCKBOX_HAS_SIMSOUND 1"
+       fi # header file present
+     fi # has codecs
+   fi # not a cross-compiler
    ;;
 
    FreeBSD)
@@ -691,6 +699,7 @@ fi
 sed > autoconf.h \
  -e "s,@ENDIAN@,${defendian},g" \
  -e "s,^#undef ROCKBOX_HAS_LOGF,$use_logf,g" \
+ -e "s,@SIMSOUND@,$use_simsound,g" \
 <<EOF
 /* This header was made by configure */
 #ifndef __BUILD_AUTOCONF_H
@@ -702,6 +711,10 @@ sed > autoconf.h \
 /* Define this if you build rockbox to support the logf logging and display */
 #undef ROCKBOX_HAS_LOGF
 
+/* Define this if you have the linux/soundcard.h header and thus can compile
+   the sound-playing code in the X11 sim */
+@SIMSOUND@
+
 #endif /* __BUILD_AUTOCONF_H */
 EOF
 

uisimulator/common/stubs.c

@@ -57,9 +57,10 @@ void pcm_init(void)
 {
 }
 
+void (*sound_get_pcm)(unsigned char** start, long* size);
 void pcm_play_data(void (*get_more)(unsigned char** start, long* size))
 {
-    (void)get_more;
+    sound_get_pcm = get_more;
 }
 
 /* Generic firmware stubs. */
@@ -94,7 +95,6 @@ int ata_write_sectors(IF_MV2(int drive,)
         FILE* f;
         char name[32];
 
-        DEBUGF("Writing sector %X\n",start+i);
         sprintf(name,"sector%lX.bin",start+i);
         f=fopen(name,"w");
         if (f) {

uisimulator/x11/SOURCES

@@ -9,3 +9,6 @@ screenhack.c
 thread.c
 uibasic.c
 visual.c
+#if CONFIG_HWCODEC == MASNONE
+sound.c
+#endif

uisimulator/x11/sound.c

@@ -0,0 +1,95 @@
+/***************************************************************************
+ *             __________               __   ___.                  
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___  
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /  
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <   
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \  
+ *                     \/            \/     \/    \/            \/ 
+ * $Id$
+ *
+ * Copyright (C) 2005 by Daniel Stenberg <daniel@haxx.se>
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "autoconf.h"
+
+#ifdef ROCKBOX_HAS_SIMSOUND /* play sound in sim enabled */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/soundcard.h>
+
+#include "sound.h"
+
+int sim_sound_init(void)
+{
+  int fd;
+  int pcmbits;
+  int rc;
+  int channels;
+  int rate;
+
+  fd = open("/dev/dsp", O_WRONLY);
+  if(-1 == fd)
+    return 1;
+
+  pcmbits = 16;
+  rc = ioctl(fd, SOUND_PCM_WRITE_BITS, &pcmbits);
+  rc = ioctl(fd, SOUND_PCM_READ_BITS, &pcmbits);
+
+  channels = 2; /* Number of channels, 1=mono */
+  rc = ioctl(fd, SOUND_PCM_WRITE_CHANNELS, &channels);
+  rc = ioctl(fd, SOUND_PCM_READ_CHANNELS, &channels);
+
+  rate = 44100; /* Yeah. sampling rate */
+  rc = ioctl(fd, SOUND_PCM_WRITE_RATE, &rate);
+  rc = ioctl(fd, SOUND_PCM_READ_RATE, &rate);
+
+  return fd;
+}
+
+void sim_sound_play(int soundfd, char *buffer, long len)
+{
+    write(soundfd, buffer, len);
+}
+
+void sound_playback_thread(void)
+{
+    int soundfd = sim_sound_init();
+    unsigned char *buf;
+    long size;
+
+    while(-1 == soundfd)
+        sleep(100000); /* wait forever, can't play sound! */
+    
+    do {
+    
+        while(!sound_get_pcm)
+            /* TODO: fix a fine thread-synch mechanism here */
+            usleep(10000);
+
+        do {
+            sound_get_pcm(&buf, &size);
+            if(!size) {
+                sound_get_pcm = NULL;
+                break;
+            }
+            sim_sound_play(soundfd, buf, size);
+            usleep(10000);
+        } while(size);
+
+    } while(1);
+    
+}
+
+#endif /* ROCKBOX_HAS_SIMSOUND */

uisimulator/x11/sound.h

@@ -0,0 +1,22 @@
+/***************************************************************************
+ *             __________               __   ___.                  
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___  
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /  
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <   
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \  
+ *                     \/            \/     \/    \/            \/ 
+ * $Id$
+ *
+ * Copyright (C) 2005 by Daniel Stenberg <daniel@haxx.se>
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+void sound_playback_thread(void);
+
+extern void (*sound_get_pcm)(unsigned char** start, long* size);

uisimulator/x11/thread.c

@@ -17,12 +17,18 @@
  *
  ****************************************************************************/
 
+#include "autoconf.h"
+
 #include <stdio.h>
 #include <pthread.h>
 
 #include "kernel.h"
 #include <sys/time.h>
 
+#ifdef ROCKBOX_HAS_SIMSOUND
+#include "sound.h"
+#endif
+
 long current_tick = 0;
 extern void button_tick(void);
 
@@ -77,8 +83,19 @@ void init_threads(void)
     /* get mutex to only allow one thread running at a time */
     pthread_mutex_lock(&mp);
 
+    /* start a tick thread */
     pthread_create(&tick_tid, NULL, (void *(*)(void *)) update_tick_thread, 
                    NULL);
+
+#ifdef ROCKBOX_HAS_SIMSOUND /* start thread that plays PCM data */
+    {
+        pthread_t sound_tid;
+        pthread_create(&sound_tid, NULL,
+                       (void *(*)(void *)) sound_playback_thread, 
+                       NULL);
+    }
+#endif
+
 }
 /* 
    int pthread_create(pthread_t *new_thread_ID,