1 files changed, 63 insertions, 0 deletions
diff --git a/src/libfaad/bits.c b/src/libfaad/bits.c
new file mode 100644
index 000000000..894a308b5
--- /dev/null
+++ b/src/libfaad/bits.c
@@ -0,0 +1,63 @@
+/*
+** FAAD - Freeware Advanced Audio Decoder
+** Copyright (C) 2002 M. Bakker
+**  
+** 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 program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** $Id: bits.c,v 1.1 2002/07/14 23:43:01 miguelfreitas Exp $
+**/
+
+#include "common.h"
+#include "bits.h"
+
+/* initialize buffer, call once before first getbits or showbits */
+void faad_initbits(bitfile *ld, void *buffer)
+{
+    uint32_t tmp;
+
+    ld->start = (uint32_t*)buffer;
+
+    tmp = *(uint32_t*)buffer;
+#ifndef ARCH_IS_BIG_ENDIAN
+    BSWAP(tmp);
+#endif
+    ld->bufa = tmp;
+
+    tmp = *((uint32_t*)buffer + 1);
+#ifndef ARCH_IS_BIG_ENDIAN
+    BSWAP(tmp);
+#endif
+    ld->bufb = tmp;
+
+    ld->pos = 0;
+    ld->tail = ((uint32_t*)buffer + 2);
+}
+
+uint32_t faad_get_processed_bits(bitfile *ld)
+{
+    return 8 * (4*(ld->tail - ld->start) - 4) - (32 - ld->pos);
+}
+
+uint8_t faad_byte_align(bitfile *ld)
+{
+    uint8_t remainder = (uint8_t)(ld->pos % 8);
+
+    if (remainder)
+    {
+        faad_flushbits(ld, 8 - remainder);
+        return (8 - remainder);
+    }
+    return 0;
+}