From 0eeb92f11c88c83254352c85cb1bb6a45da6c30a Mon Sep 17 00:00:00 2001
From: Christian Gmeiner <christian.gmeiner@gmail.com>
Date: Fri, 25 Feb 2005 17:58:10 +0000
Subject: add wv2wav

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6063 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/wv2wav.c | 196 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 196 insertions(+)
 create mode 100644 apps/plugins/wv2wav.c

(limited to 'apps/plugins/wv2wav.c')

diff --git a/apps/plugins/wv2wav.c b/apps/plugins/wv2wav.c
new file mode 100644
index 0000000000..73f71cd962
--- /dev/null
+++ b/apps/plugins/wv2wav.c
@@ -0,0 +1,196 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 Christian Gmeiner
+ *
+ * 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 "plugin.h"
+
+#if (CONFIG_HWCODEC == MASNONE)
+/* software codec platforms */
+
+#include "lib/xxx2wav.h" /* Helper functions common to test decoders */
+#include <codecs/libwavpack/wavpack.h>
+
+#define BUFFER_SIZE 4096
+
+static struct plugin_api* rb;
+static file_info_struct file_info;
+static long temp_buffer [BUFFER_SIZE];
+
+/* Reformat samples from longs in processor's native endian mode to
+ little-endian data with (possibly) less than 4 bytes / sample. */
+uchar* format_samples (int bps, uchar *dst, long *src, ulong samcnt)
+{
+  long temp;
+
+  switch (bps) 
+  {
+    case 1:
+      while (samcnt--)
+        *dst++ = *src++ + 128;
+
+      break;
+
+    case 2:
+      while (samcnt--) 
+      {
+        *dst++ = (uchar)(temp = *src++);
+        *dst++ = (uchar)(temp >> 8);
+      }
+
+      break;
+
+    case 3:
+      while (samcnt--) 
+      {
+        *dst++ = (uchar)(temp = *src++);
+        *dst++ = (uchar)(temp >> 8);
+        *dst++ = (uchar)(temp >> 16);
+      }
+
+      break;
+
+    case 4:
+      while (samcnt--) 
+      {
+        *dst++ = (uchar)(temp = *src++);
+        *dst++ = (uchar)(temp >> 8);
+        *dst++ = (uchar)(temp >> 16);
+        *dst++ = (uchar)(temp >> 24);
+      }
+
+      break;
+  }
+
+  return dst;
+}
+
+/* this is our function to decode a memory block from a file */
+void wvpack_decode_data(file_info_struct* file_info, int samples_to_decode, WavpackContext **wpc)
+{
+  int bps = WavpackGetBytesPerSample(*wpc);
+    
+  /* nothing to decode */
+  if (!samples_to_decode)
+  {
+    return;
+  }
+ 
+  /* decode now */
+  ulong samples_unpacked = WavpackUnpackSamples(*wpc, temp_buffer, samples_to_decode);  
+
+  if (samples_unpacked)
+  {
+    /* update some infos */
+    file_info->current_sample += samples_unpacked;    
+ 
+    format_samples (bps, (uchar *) temp_buffer, temp_buffer, samples_unpacked *= file_info->channels);
+
+    rb->write(file_info->outfile, temp_buffer, samples_unpacked * bps);
+  }   
+}
+
+/* callback function for wavpack 
+Maybe we do this at a lower level, but the
+first thing is to get all working */
+long Read(void* buffer, long size)
+{
+  long oldpos = file_info.curpos;
+  
+  if ((file_info.curpos + size) < file_info.filesize) 
+  {   
+    memcpy(buffer, &filebuf[file_info.curpos], size);
+    file_info.curpos += size;
+  } 
+  else 
+  {
+    memcpy(buffer, &filebuf[file_info.curpos], (file_info.filesize-1-file_info.curpos));
+    file_info.curpos = file_info.filesize;
+  }
+    
+  return (file_info.curpos - oldpos);
+}
+
+/* this is the plugin entry point */
+enum plugin_status plugin_start(struct plugin_api* api, void* file)
+{
+  WavpackContext *wpc;
+  char error[80];
+  
+  /* generic plugin initialisation */
+  TEST_PLUGIN_API(api);
+  rb = api;
+  
+  /* this function sets up the buffers and reads the file into RAM */
+  if (local_init(file,"/wvtest.wav",&file_info,api)) 
+  {
+    return PLUGIN_ERROR;
+  }
+  
+  /* setup wavpack */
+  wpc = WavpackOpenFileInput(Read, error);
+
+  /* was there an error? */
+  if (!wpc) 
+  {
+    rb->splash(HZ*2, true, error);
+    return PLUGIN_ERROR;
+  }  
+
+  /* grap/set some infos */
+  file_info.channels = WavpackGetReducedChannels(wpc);
+  file_info.total_samples = WavpackGetNumSamples(wpc);
+  file_info.bitspersample = WavpackGetBitsPerSample(wpc);
+  file_info.samplerate = WavpackGetSampleRate(wpc);
+  file_info.current_sample = 0;
+  
+  /* deciding loop */  
+  file_info.start_tick=*(rb->current_tick);
+  rb->button_clear_queue();
+
+  while (file_info.current_sample < file_info.total_samples) 
+  {
+    wvpack_decode_data(&file_info, BUFFER_SIZE / file_info.channels, &wpc);
+
+    display_status(&file_info);
+
+    if (rb->button_get(false)!=BUTTON_NONE) 
+    {
+      close_wav(&file_info);
+      return PLUGIN_OK;
+    }
+  }  
+          
+  /* do some last checks */
+  if ((WavpackGetNumSamples (wpc) != (ulong) -1) && (file_info.total_samples != WavpackGetNumSamples (wpc))) 
+  {
+    rb->splash(HZ*2, true, "incorrect number of samples!");
+    return PLUGIN_ERROR;
+  }  
+  
+  if (WavpackGetNumErrors (wpc)) {
+    rb->splash(HZ*2, true, "crc errors detected!");
+    return PLUGIN_ERROR;
+  }
+  
+  close_wav(&file_info);    
+  rb->splash(HZ*2, true, "FINISHED!");
+
+  return PLUGIN_OK;
+}
+
+#endif /* CONFIG_HWCODEC == MASNONE */
-- 
cgit v1.2.3