1 files changed, 47 insertions, 0 deletions
diff --git a/media/libaom/src/aom_dsp/daalaboolreader.c b/media/libaom/src/aom_dsp/daalaboolreader.c
new file mode 100644
index 000000000..6c2259f23
--- /dev/null
+++ b/media/libaom/src/aom_dsp/daalaboolreader.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "aom_dsp/daalaboolreader.h"
+
+int aom_daala_reader_init(daala_reader *r, const uint8_t *buffer, int size) {
+  if (size && !buffer) {
+    return 1;
+  }
+  r->buffer_end = buffer + size;
+  r->buffer = buffer;
+  od_ec_dec_init(&r->ec, buffer, size);
+#if CONFIG_ACCOUNTING
+  r->accounting = NULL;
+#endif
+  return 0;
+}
+
+const uint8_t *aom_daala_reader_find_begin(daala_reader *r) {
+  return r->buffer;
+}
+
+const uint8_t *aom_daala_reader_find_end(daala_reader *r) {
+  return r->buffer_end;
+}
+
+uint32_t aom_daala_reader_tell(const daala_reader *r) {
+  return od_ec_dec_tell(&r->ec);
+}
+
+uint32_t aom_daala_reader_tell_frac(const daala_reader *r) {
+  return od_ec_dec_tell_frac(&r->ec);
+}
+
+int aom_daala_reader_has_overflowed(const daala_reader *r) {
+  const uint32_t tell_bits = aom_daala_reader_tell(r);
+  const uint32_t tell_bytes = (tell_bits + 7) >> 3;
+  return ((ptrdiff_t)tell_bytes > r->buffer_end - r->buffer);
+}