More iPod changes

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7825 a1c6a512-1295-4272-9138-f99709370657

firmware/pcm_playback.c

@@ -329,4 +329,57 @@ void pcm_init(void)
     dma_stop();
 }
 
-#endif /* HAVE_UDA1380 */
+#elif defined(HAVE_WM8975)
+
+/* TODO: Implement for iPod - we should probably move the UDA1380 and
+   WM8975 specific code into separate files. 
+
+   For now, just implement some dummy functions.
+*/
+
+void pcm_init(void)
+{
+
+}
+
+void pcm_set_frequency(unsigned int frequency)
+{
+    (void)frequency;
+}
+
+void pcm_play_data(void (*get_more)(unsigned char** start, long* size))
+{
+    (void)get_more;
+}
+
+void pcm_play_stop(void)
+{
+}
+
+void pcm_play_pause(bool play)
+{
+    (void)play;
+}
+
+bool pcm_is_paused(void)
+{
+    return false;
+}
+
+bool pcm_is_playing(void)
+{
+    return false;
+}
+
+void pcm_calculate_peaks(int *left, int *right)
+{
+    (void)left;
+    (void)right;
+}
+
+long pcm_get_bytes_waiting(void)
+{
+    return 0;
+}
+
+#endif