/* * 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.
*/
staticvoid 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 interleave_step) { int i, j, linesize; constint step = interleave_step < 1 ? 1 : interleave_step;
// copy the left and right most columns out const uint8_t *src_ptr1 = src; const uint8_t *src_ptr2 = src + (w - 1) * step;
uint8_t *dst_ptr1 = dst - extend_left;
uint8_t *dst_ptr2 = dst + w;
// 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;
}
}
#if CONFIG_VP9_HIGHBITDEPTH staticvoid 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++) {
vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
vpx_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;
}
} #endif// CONFIG_VP9_HIGHBITDEPTH
void vp9_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
YV12_BUFFER_CONFIG *dst) { // Extend src frame in buffer // Altref filtering assumes 16 pixel extension constint et_y = 16; constint 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. constint er_y =
VPXMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
src->y_crop_width; constint eb_y =
VPXMAX(src->y_height + 16, ALIGN_POWER_OF_TWO(src->y_height, 6)) -
src->y_crop_height; constint uv_width_subsampling = (src->uv_width != src->y_width); constint uv_height_subsampling = (src->uv_height != src->y_height); constint et_uv = et_y >> uv_height_subsampling; constint el_uv = el_y >> uv_width_subsampling; constint eb_uv = eb_y >> uv_height_subsampling; constint er_uv = er_y >> uv_width_subsampling; // detect nv12 colorspace constint chroma_step = src->v_buffer - src->u_buffer == 1 ? 2 : 1;
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