1 files changed, 240 insertions, 0 deletions

diff --git a/apps/plugins/xxx2wav.h b/apps/plugins/xxx2wav.h
new file mode 100644
index 0000000000..96942824fd
--- /dev/null
+++ b/apps/plugins/xxx2wav.h
@@ -0,0 +1,240 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 Dave Chapman
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/* Various "helper functions" common to all the xxx2wav decoder plugins 
+
+   We include them as a .h because the plugin build system links
+   exactly one .c file with exactly one .rock file. 
+ */
+
+
+/* the main data structure of the program */
+typedef struct {
+    int infile;
+    int outfile;
+    off_t curpos;
+    off_t filesize;
+    int samplerate;
+    int channels;
+    int frames_decoded;
+    unsigned long total_samples;
+    unsigned long current_sample;
+    unsigned long start_tick;
+} file_info_struct;
+
+file_info_struct file_info;
+
+#define MALLOC_BUFSIZE (512*1024)
+
+int mem_ptr;
+int bufsize;
+unsigned char* mp3buf;     // The actual MP3 buffer from Rockbox
+unsigned char* mallocbuf;  // 512K from the start of MP3 buffer
+unsigned char* filebuf;    // The rest of the MP3 buffer
+
+void* malloc(size_t size) {
+  void* x;
+  char s[32];
+
+  x=&mallocbuf[mem_ptr];
+  mem_ptr+=size+(size%4); // Keep memory 32-bit aligned (if it was already?)
+
+  rb->snprintf(s,30,"Memory used: %d\r",mem_ptr);
+  rb->lcd_putsxy(0,80,s);
+  rb->lcd_update();
+  return(x);
+}
+
+void* calloc(size_t nmemb, size_t size) {
+  void* x;
+  x=malloc(nmemb*size);
+  rb->memset(x,0,nmemb*size);
+  return(x);
+}
+
+void free(void* ptr) {
+  (void)ptr;
+}
+
+void* realloc(void* ptr, size_t size) {
+  void* x;
+  (void)ptr;
+  x=malloc(size);
+  return(x);
+}
+
+void *memcpy(void *dest, const void *src, size_t n) {
+  return(rb->memcpy(dest,src,n));
+}
+
+void *memset(void *s, int c, size_t n) {
+  return(rb->memset(s,c,n));
+}
+
+int memcmp(const void *s1, const void *s2, size_t n) {
+  return(rb->memcmp(s1,s2,n));
+}
+
+void* memmove(const void *s1, const void *s2, size_t n) {
+  char* dest=(char*)s1;
+  char* src=(char*)s2;
+  size_t i;
+
+  for (i=0;i<n;i++) { dest[i]=src[i]; }
+  //  while(n>0) { *(dest++)=*(src++); n--; }
+  return(dest);
+}
+
+void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)) {
+  rb->qsort(base,nmemb,size,compar);
+}
+
+void display_status(file_info_struct* file_info) {
+  char s[32];
+  unsigned long ticks_taken;
+  unsigned long long speed;
+  unsigned long xspeed;
+
+  rb->snprintf(s,32,"Bytes read: %d\r",file_info->curpos);
+  rb->lcd_putsxy(0,0,s);
+  rb->snprintf(s,32,"Samples Decoded: %d\r",file_info->current_sample);
+  rb->lcd_putsxy(0,20,s);
+  rb->snprintf(s,32,"Frames Decoded: %d\r",file_info->frames_decoded);
+  rb->lcd_putsxy(0,40,s);
+
+  ticks_taken=*(rb->current_tick)-file_info->start_tick;
+
+  /* e.g.:
+   ticks_taken=500
+   sam_fmt.rate=44,100
+   samples_decoded=172,400
+   (samples_decoded/sam_fmt.rate)*100=400 (time it should have taken)
+   % Speed=(400/500)*100=80%
+  */
+
+  if (ticks_taken==0) { ticks_taken=1; } // Avoid fp exception.
+
+  speed=(100*file_info->current_sample)/file_info->samplerate;
+  xspeed=(speed*10000)/ticks_taken;
+  rb->snprintf(s,32,"Speed %ld.%02ld %% Secs: %d",(xspeed/100),(xspeed%100),ticks_taken/100); 
+  rb->lcd_putsxy(0,60,s);
+
+  rb->lcd_update();
+}
+
+static unsigned char wav_header[44]={'R','I','F','F',    //  0 - ChunkID
+                              0,0,0,0,            //  4 - ChunkSize (filesize-8)
+                              'W','A','V','E',    //  8 - Format
+                              'f','m','t',' ',    // 12 - SubChunkID
+                              16,0,0,0,           // 16 - SubChunk1ID  // 16 for PCM
+                              1,0,                // 20 - AudioFormat (1=16-bit)
+                              2,0,                // 22 - NumChannels
+                              0,0,0,0,            // 24 - SampleRate in Hz
+                              0,0,0,0,            // 28 - Byte Rate (SampleRate*NumChannels*(BitsPerSample/8)
+                              4,0,                // 32 - BlockAlign (== NumChannels * BitsPerSample/8)
+                              16,0,               // 34 - BitsPerSample
+                              'd','a','t','a',    // 36 - Subchunk2ID
+                              0,0,0,0             // 40 - Subchunk2Size
+                             };
+
+
+int local_init(char* file, file_info_struct* file_info) {
+  char s[32];
+  int i,n,bytesleft;
+
+  mem_ptr=0;
+  mp3buf=rb->plugin_get_mp3_buffer(&bufsize);
+  mallocbuf=mp3buf;
+  filebuf=&mp3buf[MALLOC_BUFSIZE];
+
+  rb->snprintf(s,32,"mp3 bufsize: %d\r",bufsize);
+  rb->lcd_putsxy(0,100,s);
+  rb->lcd_update();
+
+  file_info->infile=rb->open(file,O_RDONLY);
+  file_info->outfile=rb->creat("/ac3test.wav",O_WRONLY);
+  rb->write(file_info->outfile,wav_header,sizeof(wav_header));
+  file_info->curpos=0;
+  file_info->frames_decoded=0;
+  file_info->filesize=rb->filesize(file_info->infile);
+
+  if (file_info->filesize > (bufsize-MALLOC_BUFSIZE)) {
+    rb->close(file_info->infile);
+    rb->splash(HZ*2, true, "File too large");
+    return(1);
+  }
+
+  rb->snprintf(s,32,"Loading file...");
+  rb->lcd_putsxy(0,0,s);
+  rb->lcd_update();
+
+  bytesleft=file_info->filesize;
+  i=0;
+  while (bytesleft > 0) {
+    n=rb->read(file_info->infile,&filebuf[i],bytesleft);
+    if (n < 0) {
+      rb->close(file_info->infile);
+      rb->splash(HZ*2, true, "ERROR READING FILE");
+      return(1);
+    }      
+    i+=n; bytesleft-=n;
+  }
+  rb->close(file_info->infile);
+  return(0);
+}
+
+void close_wav(file_info_struct* file_info) {
+  int x;
+  int filesize=rb->filesize(file_info->outfile);
+
+  /* We assume 16-bit, Stereo */
+
+  rb->lseek(file_info->outfile,0,SEEK_SET);
+
+  // ChunkSize
+  x=filesize-8;
+  wav_header[4]=(x&0xff);
+  wav_header[5]=(x&0xff00)>>8;
+  wav_header[6]=(x&0xff0000)>>16;
+  wav_header[7]=(x&0xff000000)>>24;
+
+  // Samplerate
+  wav_header[24]=file_info->samplerate&0xff;
+  wav_header[25]=(file_info->samplerate&0xff00)>>8;
+  wav_header[26]=(file_info->samplerate&0xff0000)>>16;
+  wav_header[27]=(file_info->samplerate&0xff000000)>>24;
+
+  // ByteRate
+  x=file_info->samplerate*4;
+  wav_header[28]=(x&0xff);
+  wav_header[29]=(x&0xff00)>>8;
+  wav_header[30]=(x&0xff0000)>>16;
+  wav_header[31]=(x&0xff000000)>>24;
+  
+  // Subchunk2Size
+  x=filesize-44;
+  wav_header[40]=(x&0xff);
+  wav_header[41]=(x&0xff00)>>8;
+  wav_header[42]=(x&0xff0000)>>16;
+  wav_header[43]=(x&0xff000000)>>24;
+
+  rb->write(file_info->outfile,wav_header,sizeof(wav_header));
+  rb->close(file_info->outfile);
+}
+