commit asap codec. plays .sap files. At the moment it only plays the default song. So subSongs are ignored.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18121 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 131 insertions, 0 deletions

diff --git a/apps/codecs/asap.c b/apps/codecs/asap.c
new file mode 100644
index 0000000..f6fa68f
--- /dev/null
+++ b/apps/codecs/asap.c
@@ -0,0 +1,131 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: asap.c 17847 2008-06-28 18:10:04Z domonoky $
+ *
+ * Copyright (C) 2008 Dominik Wenger
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "codeclib.h"
+#include "asap/asap.h"
+
+CODEC_HEADER
+
+#define CHUNK_SIZE (1024*8)
+
+static byte samples[CHUNK_SIZE];   /* The sample buffer */
+static ASAP_State asap;         /* asap codec state */
+
+/* this is the codec entry point */
+enum codec_status codec_main(void)
+{
+    int n_bytes;
+    int song;
+    int duration;
+    char* module;
+
+    /* Generic codec initialisation */
+    ci->configure(CODEC_SET_FILEBUF_WATERMARK, 1024*512);
+    
+next_track:
+    if (codec_init()) {
+        DEBUGF("codec init failed\n");
+        return CODEC_ERROR;
+    }
+
+    while (!*ci->taginfo_ready && !ci->stop_codec)
+        ci->sleep(1);
+
+    codec_set_replaygain(ci->id3);
+        
+    int bytes_done =0;   
+    int filesize;
+    ci->seek_buffer(0);
+    module = ci->request_buffer(&filesize, ci->filesize);
+    if (!module || (size_t)filesize < (size_t)ci->filesize) 
+    {
+        DEBUGF("loading error\n");
+        return CODEC_ERROR;
+    }
+
+    /*Init ASAP */
+    if (!ASAP_Load(&asap, ci->id3->path, module, filesize))
+    {
+        DEBUGF("%s: format not supported",ci->id3->path);
+        return CODEC_ERROR;
+    }  
+    
+      /* Make use of 44.1khz */
+    ci->configure(DSP_SET_FREQUENCY, 44100);
+    /* Sample depth is 16 bit little endian */
+    ci->configure(DSP_SET_SAMPLE_DEPTH, 16);
+    /* Stereo or Mono output ? */
+    if(asap.module_info.channels ==1)
+        ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
+    else
+        ci->configure(DSP_SET_STEREO_MODE, STEREO_INTERLEAVED);
+        
+    /* reset eleapsed */
+    ci->set_elapsed(0);
+
+    song = asap.module_info.default_song;
+    duration = asap.module_info.durations[song];
+    if (duration < 0)
+        duration = 180 * 1000;
+    
+    ASAP_PlaySong(&asap, song, duration);
+    ASAP_MutePokeyChannels(&asap, 0);
+    
+    /* The main decoder loop */    
+    while (1) {
+        ci->yield();
+        if (ci->stop_codec || ci->new_track)
+            break;
+
+        if (ci->seek_time) {
+            /* New time is ready in ci->seek_time */
+                      
+            /* seek to pos */
+            ASAP_Seek(&asap,ci->seek_time);
+            /* update elapsed */
+            ci->set_elapsed(ci->seek_time);
+            /* update bytes_done */
+            bytes_done = ci->seek_time*44.1*2;    
+            /* seek ready */    
+            ci->seek_complete();            
+        }
+        
+        /* Generate a buffer full of Audio */
+        #ifdef ROCKBOX_LITTLE_ENDIAN
+        n_bytes = ASAP_Generate(&asap, samples, sizeof(samples), ASAP_FORMAT_S16_LE);
+        #else
+        n_bytes = ASAP_Generate(&asap, samples, sizeof(samples), ASAP_FORMAT_S16_BE);
+        #endif
+        
+        ci->pcmbuf_insert(samples, NULL, n_bytes /2);
+        
+        bytes_done += n_bytes;
+        ci->set_elapsed((bytes_done / 2) / 44.1);
+        
+        if(n_bytes != sizeof(samples))
+            break;
+    }
+
+    if (ci->request_next_track())
+        goto next_track;
+ 
+    return CODEC_OK;    
+}