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-rw-r--r--media/libaom/src/av1/encoder/extend.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/media/libaom/src/av1/encoder/extend.c b/media/libaom/src/av1/encoder/extend.c
new file mode 100644
index 000000000..e9621a574
--- /dev/null
+++ b/media/libaom/src/av1/encoder/extend.c
@@ -0,0 +1,188 @@
+/*
+ * 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/aom_dsp_common.h"
+#include "aom_mem/aom_mem.h"
+#include "aom_ports/mem.h"
+
+#include "av1/common/common.h"
+#include "av1/encoder/extend.h"
+
+static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
+ uint8_t *dst, int dst_pitch, int w, int h,
+ int extend_top, int extend_left,
+ int extend_bottom, int extend_right) {
+ int i, linesize;
+
+ // copy the left and right most columns out
+ const uint8_t *src_ptr1 = src;
+ const uint8_t *src_ptr2 = src + w - 1;
+ uint8_t *dst_ptr1 = dst - extend_left;
+ uint8_t *dst_ptr2 = dst + w;
+
+ for (i = 0; i < h; i++) {
+ memset(dst_ptr1, src_ptr1[0], extend_left);
+ memcpy(dst_ptr1 + extend_left, src_ptr1, w);
+ memset(dst_ptr2, src_ptr2[0], extend_right);
+ src_ptr1 += src_pitch;
+ src_ptr2 += src_pitch;
+ dst_ptr1 += dst_pitch;
+ dst_ptr2 += dst_pitch;
+ }
+
+ // Now copy the top and bottom lines into each line of the respective
+ // borders
+ src_ptr1 = dst - extend_left;
+ src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
+ dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
+ dst_ptr2 = dst + dst_pitch * (h)-extend_left;
+ linesize = extend_left + extend_right + w;
+
+ for (i = 0; i < extend_top; i++) {
+ memcpy(dst_ptr1, src_ptr1, linesize);
+ dst_ptr1 += dst_pitch;
+ }
+
+ for (i = 0; i < extend_bottom; i++) {
+ memcpy(dst_ptr2, src_ptr2, linesize);
+ dst_ptr2 += dst_pitch;
+ }
+}
+
+static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
+ uint8_t *dst8, int dst_pitch, int w,
+ int h, int extend_top, int extend_left,
+ int extend_bottom, int extend_right) {
+ int i, linesize;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+
+ // copy the left and right most columns out
+ const uint16_t *src_ptr1 = src;
+ const uint16_t *src_ptr2 = src + w - 1;
+ uint16_t *dst_ptr1 = dst - extend_left;
+ uint16_t *dst_ptr2 = dst + w;
+
+ for (i = 0; i < h; i++) {
+ aom_memset16(dst_ptr1, src_ptr1[0], extend_left);
+ memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
+ aom_memset16(dst_ptr2, src_ptr2[0], extend_right);
+ src_ptr1 += src_pitch;
+ src_ptr2 += src_pitch;
+ dst_ptr1 += dst_pitch;
+ dst_ptr2 += dst_pitch;
+ }
+
+ // Now copy the top and bottom lines into each line of the respective
+ // borders
+ src_ptr1 = dst - extend_left;
+ src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
+ dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
+ dst_ptr2 = dst + dst_pitch * (h)-extend_left;
+ linesize = extend_left + extend_right + w;
+
+ for (i = 0; i < extend_top; i++) {
+ memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
+ dst_ptr1 += dst_pitch;
+ }
+
+ for (i = 0; i < extend_bottom; i++) {
+ memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
+ dst_ptr2 += dst_pitch;
+ }
+}
+
+void av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
+ YV12_BUFFER_CONFIG *dst) {
+ // Extend src frame in buffer
+ // Altref filtering assumes 16 pixel extension
+ const int et_y = 16;
+ const int el_y = 16;
+ // Motion estimation may use src block variance with the block size up
+ // to 64x64, so the right and bottom need to be extended to 64 multiple
+ // or up to 16, whichever is greater.
+ const int er_y =
+ AOMMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
+ src->y_crop_width;
+ const int eb_y =
+ AOMMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
+ src->y_crop_height;
+ const int uv_width_subsampling = (src->uv_width != src->y_width);
+ const int uv_height_subsampling = (src->uv_height != src->y_height);
+ const int et_uv = et_y >> uv_height_subsampling;
+ const int el_uv = el_y >> uv_width_subsampling;
+ const int eb_uv = eb_y >> uv_height_subsampling;
+ const int er_uv = er_y >> uv_width_subsampling;
+
+ if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
+ highbd_copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
+ dst->y_stride, src->y_crop_width,
+ src->y_crop_height, et_y, el_y, eb_y, er_y);
+
+ highbd_copy_and_extend_plane(
+ src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride,
+ src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
+
+ highbd_copy_and_extend_plane(
+ src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
+ src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
+ return;
+ }
+
+ copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
+ dst->y_stride, src->y_crop_width, src->y_crop_height,
+ et_y, el_y, eb_y, er_y);
+
+ copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
+ dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
+ et_uv, el_uv, eb_uv, er_uv);
+
+ copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer,
+ dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
+ et_uv, el_uv, eb_uv, er_uv);
+}
+
+void av1_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
+ YV12_BUFFER_CONFIG *dst, int srcy,
+ int srcx, int srch, int srcw) {
+ // If the side is not touching the bounder then don't extend.
+ const int et_y = srcy ? 0 : dst->border;
+ const int el_y = srcx ? 0 : dst->border;
+ const int eb_y = srcy + srch != src->y_height
+ ? 0
+ : dst->border + dst->y_height - src->y_height;
+ const int er_y = srcx + srcw != src->y_width
+ ? 0
+ : dst->border + dst->y_width - src->y_width;
+ const int src_y_offset = srcy * src->y_stride + srcx;
+ const int dst_y_offset = srcy * dst->y_stride + srcx;
+
+ const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
+ const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
+ const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
+ const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
+ const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
+ const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
+ const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
+ const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
+
+ copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
+ dst->y_buffer + dst_y_offset, dst->y_stride, srcw, srch,
+ et_y, el_y, eb_y, er_y);
+
+ copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
+ dst->u_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
+ srch_uv, et_uv, el_uv, eb_uv, er_uv);
+
+ copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
+ dst->v_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
+ srch_uv, et_uv, el_uv, eb_uv, er_uv);
+}
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