PhotoRec: add information about amr file format

1 files changed, 28 insertions, 0 deletions

diff --git a/src/file_amr.c b/src/file_amr.c
index f0167b1..81e7ef4 100644
--- a/src/file_amr.c
+++ b/src/file_amr.c
@@ -29,6 +29,7 @@
 #include <stdio.h>
 #include "types.h"
 #include "filegen.h"
+#include "log.h"
 
 static void register_header_check_amr(file_stat_t *file_stat);
 static int header_check_amr(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new);
@@ -54,11 +55,38 @@ static void register_header_check_amr(file_stat_t *file_stat)
   register_header_check(0, amr_header,sizeof(amr_header), &header_check_amr, file_stat);
 }
 
+#if 0
+static int data_check_amr(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
+{
+  while(file_recovery->calculated_file_size + buffer_size/2  >= file_recovery->file_size &&
+      file_recovery->calculated_file_size + 2 < file_recovery->file_size + buffer_size/2)
+  {
+    const unsigned int i=file_recovery->calculated_file_size - file_recovery->file_size + buffer_size/2;
+    switch(buffer[i]&0x70)
+    {
+      case 0x00: file_recovery->calculated_file_size+=13; break;
+      case 0x10: file_recovery->calculated_file_size+=14; break;
+      case 0x20: file_recovery->calculated_file_size+=16; break;
+      case 0x30: file_recovery->calculated_file_size+=18; break;
+      case 0x40: file_recovery->calculated_file_size+=20; break;
+      case 0x50: file_recovery->calculated_file_size+=21; break;
+      case 0x60: file_recovery->calculated_file_size+=27; break;
+      case 0x70: file_recovery->calculated_file_size+=32; break;
+    }
+  }
+  return 1;
+}
+#endif
 static int header_check_amr(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
 {
   if(memcmp(buffer,amr_header,sizeof(amr_header))==0)
   {
     reset_file_recovery(file_recovery_new);
+#if 0
+    file_recovery_new->calculated_file_size=6;
+    file_recovery_new->data_check=&data_check_amr;
+    file_recovery_new->file_check=&file_check_size;
+#endif
     file_recovery_new->extension=file_hint_amr.extension;
     return 1;
   }