1 files changed, 117 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/vp9_common.h b/media/libvpx/vp9/common/vp9_common.h
new file mode 100644
index 000000000..9c2d7791e
--- /dev/null
+++ b/media/libvpx/vp9/common/vp9_common.h
@@ -0,0 +1,117 @@
+/*
+ *  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 VP9_COMMON_VP9_COMMON_H_
+#define VP9_COMMON_VP9_COMMON_H_
+
+/* Interface header for common constant data structures and lookup tables */
+
+#include <assert.h>
+
+#include "./vpx_config.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vpx/vpx_integer.h"
+#include "vp9/common/vp9_systemdependent.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MIN(x, y) (((x) < (y)) ? (x) : (y))
+#define MAX(x, y) (((x) > (y)) ? (x) : (y))
+
+// Only need this for fixed-size arrays, for structs just assign.
+#define vp9_copy(dest, src) {            \
+    assert(sizeof(dest) == sizeof(src)); \
+    memcpy(dest, src, sizeof(src));  \
+  }
+
+// 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 uint8_t clip_pixel(int val) {
+  return (val > 255) ? 255 : (val < 0) ? 0 : val;
+}
+
+static INLINE int clamp(int value, int low, int high) {
+  return value < low ? low : (value > high ? high : value);
+}
+
+static INLINE double fclamp(double value, double low, double high) {
+  return value < low ? low : (value > high ? high : value);
+}
+
+static INLINE int get_unsigned_bits(unsigned int num_values) {
+  return num_values > 0 ? get_msb(num_values) + 1 : 0;
+}
+
+#if CONFIG_VP9_HIGHBITDEPTH
+static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
+  switch (bd) {
+    case 8:
+    default:
+      return (uint16_t)clamp(val, 0, 255);
+    case 10:
+      return (uint16_t)clamp(val, 0, 1023);
+    case 12:
+      return (uint16_t)clamp(val, 0, 4095);
+  }
+}
+
+// Note:
+// tran_low_t  is the datatype used for final transform coefficients.
+// tran_high_t is the datatype used for intermediate transform stages.
+typedef int64_t tran_high_t;
+typedef int32_t tran_low_t;
+
+#else
+
+// Note:
+// tran_low_t  is the datatype used for final transform coefficients.
+// tran_high_t is the datatype used for intermediate transform stages.
+typedef int32_t tran_high_t;
+typedef int16_t tran_low_t;
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
+#if CONFIG_DEBUG
+#define CHECK_MEM_ERROR(cm, lval, expr) do { \
+  lval = (expr); \
+  if (!lval) \
+    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
+                       "Failed to allocate "#lval" at %s:%d", \
+                       __FILE__, __LINE__); \
+  } while (0)
+#else
+#define CHECK_MEM_ERROR(cm, lval, expr) do { \
+  lval = (expr); \
+  if (!lval) \
+    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
+                       "Failed to allocate "#lval); \
+  } while (0)
+#endif
+
+#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  // VP9_COMMON_VP9_COMMON_H_