Added Crossfade setting for iRiver

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6636 a1c6a512-1295-4272-9138-f99709370657

apps/lang/english.lang

@@ -3087,3 +3087,9 @@ desc: in info menu;  name for external disk with multivolume (Ondio; keep short!
 eng: "MMC:"
 voice: "Multimedia card"
 new:
+
+id: LANG_CROSSFADE
+desc: in playback settings
+eng: "Crossfade"
+voice: "Crossfade"
+new:

apps/settings.c

@@ -72,7 +72,9 @@ struct user_settings global_settings;
 #ifdef HAVE_RECORDING
 const char rec_base_directory[] = REC_BASE_DIR;
 #endif
-
+#if CONFIG_HWCODEC == MASNONE
+#include "pcm_playback.h"
+#endif
 
 #define CONFIG_BLOCK_VERSION 21
 #define CONFIG_BLOCK_SIZE 512
@@ -382,6 +384,10 @@ static const struct bit_entry hd_bits[] =
     {4, S_O(rec_trigger_mode ), 1, "trigger mode", "off,no rearm,rearm"},
 #endif
 
+#if CONFIG_HWCODEC == MASNONE
+    {1, S_O(crossfade), false, "crossfade", off_on},
+#endif
+    
     /* new stuff to be added at the end */
 		    
     /* Sum of all bit sizes must not grow beyond 0xB8*8 = 1472 */
@@ -812,6 +818,10 @@ void settings_apply(void)
         lang_load(buf);
         talk_init(); /* use voice of same language */
     }
+
+#if CONFIG_HWCODEC == MASNONE && !defined(SIMULATOR)
+    pcm_crossfade_enable(global_settings.crossfade);
+#endif
 }
 
 

apps/settings.h

@@ -152,6 +152,10 @@ struct user_settings
     bool mdb_enable; /* true/false */
     bool superbass; /* true/false */
 
+#if CONFIG_HWCODEC == MASNONE
+    bool crossfade;
+#endif
+
     int rec_quality;   /* 0-7 */
     int rec_source;    /* 0=mic, 1=line, 2=S/PDIF */
     int rec_frequency; /* 0 = 44.1kHz

apps/settings_menu.c

@@ -60,6 +60,10 @@ void dac_line_in(bool enable);
 #include "lcd-remote.h"
 #endif
 
+#if CONFIG_HWCODEC == MASNONE
+#include "pcm_playback.h"
+#endif
+
 #ifdef HAVE_CHARGING
 static bool car_adapter_mode(void)
 {
@@ -1055,6 +1059,17 @@ static bool id3_order(void)
                              mpeg_id3_options);
 }
 
+#if CONFIG_HWCODEC == MASNONE
+static bool crossfade(void)
+{
+    bool rc = set_bool( str(LANG_CROSSFADE), &global_settings.crossfade );
+#ifndef SIMULATOR
+    pcm_crossfade_enable(global_settings.crossfade);
+#endif
+    return rc;
+}
+#endif
+
 static bool playback_settings_menu(void)
 {
     int m;
@@ -1068,6 +1083,9 @@ static bool playback_settings_menu(void)
         { ID2P(LANG_WIND_MENU), ff_rewind_settings_menu },
         { ID2P(LANG_MP3BUFFER_MARGIN), buffer_margin },
         { ID2P(LANG_FADE_ON_STOP), set_fade_on_stop },
+#if CONFIG_HWCODEC == MASNONE
+        { ID2P(LANG_CROSSFADE), crossfade },
+#endif
         { ID2P(LANG_ID3_ORDER), id3_order },
     };
 

firmware/export/pcm_playback.h

@@ -45,5 +45,6 @@ bool pcm_is_lowdata(void);
 void pcm_crossfade_start(void);
 unsigned int audiobuffer_get_latency(void);
 bool audiobuffer_insert(char *buf, size_t length);
+void pcm_crossfade_enable(bool on_off);
 
 #endif

firmware/pcm_playback.c

@@ -56,6 +56,7 @@ static volatile size_t audiobuffer_free;
 static size_t audiobuffer_fillpos;
 static bool boost_mode;
 
+static bool crossfade_enabled;
 static bool crossfade_active;
 static int crossfade_pos;
 static int crossfade_amount;
@@ -432,18 +433,7 @@ bool audiobuffer_insert(char *buf, size_t length)
     }
 
     while (length > 0) {
-        if (!crossfade_active) {
-            copy_n = MIN(length, PCMBUF_SIZE - audiobuffer_pos - 
-                        audiobuffer_fillpos);
-            copy_n = MIN(CHUNK_SIZE, copy_n);
-            
-            memcpy(&audiobuffer[audiobuffer_pos+audiobuffer_fillpos],
-                   buf, copy_n);
-            buf += copy_n;
-            audiobuffer_free -= copy_n;
-            length -= copy_n;
-            
-        } else {
+        if (crossfade_enabled && crossfade_active) {
             copy_n = MIN(length, PCMBUF_SIZE - (unsigned int)crossfade_pos);
             
             crossfade((short *)&audiobuffer[crossfade_pos], 
@@ -453,7 +443,17 @@ bool audiobuffer_insert(char *buf, size_t length)
             crossfade_pos += copy_n;
             if (crossfade_pos >= PCMBUF_SIZE)
                 crossfade_pos -= PCMBUF_SIZE;
-            continue ;
+            continue ;            
+        } else {
+            copy_n = MIN(length, PCMBUF_SIZE - audiobuffer_pos - 
+                        audiobuffer_fillpos);
+            copy_n = MIN(CHUNK_SIZE, copy_n);
+            
+            memcpy(&audiobuffer[audiobuffer_pos+audiobuffer_fillpos],
+                   buf, copy_n);
+            buf += copy_n;
+            audiobuffer_free -= copy_n;
+            length -= copy_n;
         }
         
         /* Pre-buffer to meet CHUNK_SIZE requirement */
@@ -501,6 +501,13 @@ void pcm_play_init(void)
     memset(&audiobuffer[0], 0, audiobuffer_pos);
     pcm_play_add_chunk(&audiobuffer[0], audiobuffer_pos, NULL);
     pcm_play_start();
+
+    crossfade_enabled = false;
+}
+
+void pcm_crossfade_enable(bool on_off)
+{
+    crossfade_enabled = on_off;
 }
 
 void pcm_play_start(void)