1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/aom_filter.h b/third_party/aom/aom_dsp/aom_filter.h
new file mode 100644
index 0000000000..00686ac388
--- /dev/null
+++ b/third_party/aom/aom_dsp/aom_filter.h
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef AOM_AOM_DSP_AOM_FILTER_H_
+#define AOM_AOM_DSP_AOM_FILTER_H_
+
+#include "aom/aom_integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FILTER_BITS 7
+
+#define SUBPEL_BITS 4
+#define SUBPEL_MASK ((1 << SUBPEL_BITS) - 1)
+#define SUBPEL_SHIFTS (1 << SUBPEL_BITS)
+#define SUBPEL_TAPS 8
+
+#define SCALE_SUBPEL_BITS 10
+#define SCALE_SUBPEL_SHIFTS (1 << SCALE_SUBPEL_BITS)
+#define SCALE_SUBPEL_MASK (SCALE_SUBPEL_SHIFTS - 1)
+#define SCALE_EXTRA_BITS (SCALE_SUBPEL_BITS - SUBPEL_BITS)
+#define SCALE_EXTRA_OFF ((1 << SCALE_EXTRA_BITS) / 2)
+
+#define RS_SUBPEL_BITS 6
+#define RS_SUBPEL_MASK ((1 << RS_SUBPEL_BITS) - 1)
+#define RS_SCALE_SUBPEL_BITS 14
+#define RS_SCALE_SUBPEL_MASK ((1 << RS_SCALE_SUBPEL_BITS) - 1)
+#define RS_SCALE_EXTRA_BITS (RS_SCALE_SUBPEL_BITS - RS_SUBPEL_BITS)
+#define RS_SCALE_EXTRA_OFF (1 << (RS_SCALE_EXTRA_BITS - 1))
+
+typedef int16_t InterpKernel[SUBPEL_TAPS];
+
+#define BIL_SUBPEL_BITS 3
+#define BIL_SUBPEL_SHIFTS (1 << BIL_SUBPEL_BITS)
+
+// 2 tap bilinear filters
+static const uint8_t bilinear_filters_2t[BIL_SUBPEL_SHIFTS][2] = {
+  { 128, 0 }, { 112, 16 }, { 96, 32 }, { 80, 48 },
+  { 64, 64 }, { 48, 80 },  { 32, 96 }, { 16, 112 },
+};
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AOM_DSP_AOM_FILTER_H_