1 files changed, 52 insertions, 0 deletions
diff --git a/libvpx/vp8/decoder/dboolhuff.c b/libvpx/vp8/decoder/dboolhuff.c
new file mode 100644
index 0000000..7e7b05a
--- /dev/null
+++ b/libvpx/vp8/decoder/dboolhuff.c
@@ -0,0 +1,52 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+#include "dboolhuff.h"
+#include "vpx_ports/mem.h"
+#include "vpx_mem/vpx_mem.h"
+
+int vp8dx_start_decode(BOOL_DECODER *br,
+                       const unsigned char *source,
+                       unsigned int source_sz)
+{
+    br->user_buffer_end = source+source_sz;
+    br->user_buffer     = source;
+    br->value    = 0;
+    br->count    = -8;
+    br->range    = 255;
+
+    if (source_sz && !source)
+        return 1;
+
+    /* Populate the buffer */
+    vp8dx_bool_decoder_fill(br);
+
+    return 0;
+}
+
+
+void vp8dx_bool_decoder_fill(BOOL_DECODER *br)
+{
+    const unsigned char *bufptr;
+    const unsigned char *bufend;
+    VP8_BD_VALUE         value;
+    int                  count;
+    bufend = br->user_buffer_end;
+    bufptr = br->user_buffer;
+    value = br->value;
+    count = br->count;
+
+    VP8DX_BOOL_DECODER_FILL(count, value, bufptr, bufend);
+
+    br->user_buffer = bufptr;
+    br->value = value;
+    br->count = count;
+}