1 files changed, 59 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_common.h b/media/libvpx/libvpx/vp9/common/vp9_common.h
new file mode 100644
index 0000000000..d63bad93d1
--- /dev/null
+++ b/media/libvpx/libvpx/vp9/common/vp9_common.h
@@ -0,0 +1,59 @@
+/*
+ *  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.
+ */
+
+#ifndef VPX_VP9_COMMON_VP9_COMMON_H_
+#define VPX_VP9_COMMON_VP9_COMMON_H_
+
+/* Interface header for common constant data structures and lookup tables */
+
+#include <assert.h>
+
+#include "./vpx_config.h"
+#include "vpx_dsp/vpx_dsp_common.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vpx/vpx_integer.h"
+#include "vpx_ports/bitops.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Only need this for fixed-size arrays, for structs just assign.
+#define vp9_copy(dest, src)              \
+  do {                                   \
+    assert(sizeof(dest) == sizeof(src)); \
+    memcpy(dest, src, sizeof(src));      \
+  } while (0)
+
+// Use this for variably-sized arrays.
+#define vp9_copy_array(dest, src, n)           \
+  {                                            \
+    assert(sizeof(*(dest)) == sizeof(*(src))); \
+    memcpy(dest, src, (n) * sizeof(*(src)));   \
+  }
+
+#define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
+#define vp9_zero_array(dest, n) memset(dest, 0, (n) * sizeof(*(dest)))
+
+static INLINE int get_unsigned_bits(unsigned int num_values) {
+  return num_values > 0 ? get_msb(num_values) + 1 : 0;
+}
+
+#define VP9_SYNC_CODE_0 0x49
+#define VP9_SYNC_CODE_1 0x83
+#define VP9_SYNC_CODE_2 0x42
+
+#define VP9_FRAME_MARKER 0x2
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_VP9_COMMON_VP9_COMMON_H_