Build librbcodec with DSP and metadata.

All associated files are moved to /lib/rbcodec.

Change-Id: I572ddd2b8a996aae1e98c081d06b1ed356dce222

lib/rbcodec/metadata/kss.c

@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <inttypes.h>
+
+#include "system.h"
+#include "metadata.h"
+#include "metadata_common.h"
+#include "metadata_parsers.h"
+#include "rbunicode.h"
+
+static bool parse_kss_header(int fd, struct mp3entry* id3)
+{
+    /* Use the trackname part of the id3 structure as a temporary buffer */
+    unsigned char* buf = (unsigned char *)id3->path;
+
+     lseek(fd, 0, SEEK_SET);
+     if (read(fd, buf, 0x20) < 0x20)
+        return false;
+
+    /* calculate track length with number of tracks */
+    id3->length = 0;
+    if (buf[14] == 0x10) {
+        id3->length = (get_short_le((void *)(buf + 26)) + 1) * 1000;
+    }
+    
+    if (id3->length <= 0)
+        id3->length = 255 * 1000; /* 255 tracks */
+
+    return true;
+}
+
+
+bool get_kss_metadata(int fd, struct mp3entry* id3)
+{
+   uint32_t kss_type;
+    if ((lseek(fd, 0, SEEK_SET) < 0) ||
+         read_uint32be(fd, &kss_type) != (int)sizeof(kss_type))
+        return false;
+
+    id3->vbr = false;
+    id3->filesize = filesize(fd);
+    /* we only render 16 bits, 44.1KHz, Stereo */
+    id3->bitrate = 706;
+    id3->frequency = 44100;
+  
+    /* Make sure this is an SGC file */
+    if (kss_type != FOURCC('K','S','C','C') && kss_type != FOURCC('K','S','S','X'))
+        return false;
+
+    return parse_kss_header(fd, id3);
+}