Port folder renaming changes from AOM
Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom
Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/av1/common/scale.h b/av1/common/scale.h
new file mode 100644
index 0000000..bb02601
--- /dev/null
+++ b/av1/common/scale.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2013 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 VP10_COMMON_SCALE_H_
+#define VP10_COMMON_SCALE_H_
+
+#include "av1/common/mv.h"
+#include "aom_dsp/vpx_convolve.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define REF_SCALE_SHIFT 14
+#define REF_NO_SCALE (1 << REF_SCALE_SHIFT)
+#define REF_INVALID_SCALE -1
+
+struct scale_factors {
+ int x_scale_fp; // horizontal fixed point scale factor
+ int y_scale_fp; // vertical fixed point scale factor
+ int x_step_q4;
+ int y_step_q4;
+
+ int (*scale_value_x)(int val, const struct scale_factors *sf);
+ int (*scale_value_y)(int val, const struct scale_factors *sf);
+
+ convolve_fn_t predict[2][2][2]; // horiz, vert, avg
+#if CONFIG_VP9_HIGHBITDEPTH
+ highbd_convolve_fn_t highbd_predict[2][2][2]; // horiz, vert, avg
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+// Functions for non-interpolating filters (those that filter zero offsets)
+#if CONFIG_EXT_INTERP && SUPPORT_NONINTERPOLATING_FILTERS
+ convolve_fn_t predict_ni[2][2][2]; // horiz, vert, avg
+#if CONFIG_VP9_HIGHBITDEPTH
+ highbd_convolve_fn_t highbd_predict_ni[2][2][2]; // horiz, vert, avg
+#endif // CONFIG_VP9_HIGHBITDEPTH
+#endif // CONFIG_EXT_INTERP && SUPPORT_NONINTERPOLATING_FILTERS
+};
+
+MV32 vp10_scale_mv(const MV *mv, int x, int y, const struct scale_factors *sf);
+
+#if CONFIG_VP9_HIGHBITDEPTH
+void vp10_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w,
+ int other_h, int this_w, int this_h,
+ int use_high);
+#else
+void vp10_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w,
+ int other_h, int this_w, int this_h);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+static INLINE int vp10_is_valid_scale(const struct scale_factors *sf) {
+ return sf->x_scale_fp != REF_INVALID_SCALE &&
+ sf->y_scale_fp != REF_INVALID_SCALE;
+}
+
+static INLINE int vp10_is_scaled(const struct scale_factors *sf) {
+ return vp10_is_valid_scale(sf) &&
+ (sf->x_scale_fp != REF_NO_SCALE || sf->y_scale_fp != REF_NO_SCALE);
+}
+
+static INLINE int valid_ref_frame_size(int ref_width, int ref_height,
+ int this_width, int this_height) {
+ return 2 * this_width >= ref_width && 2 * this_height >= ref_height &&
+ this_width <= 16 * ref_width && this_height <= 16 * ref_height;
+}
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // VP10_COMMON_SCALE_H_
