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/*
* 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.
*/
#include <assert.h>
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/yv12config.h"
static void extend_plane(uint8_t *const src, int src_stride,
int width, int height,
int extend_top, int extend_left,
int extend_bottom, int extend_right) {
int i;
const int linesize = extend_left + extend_right + width;
/* copy the left and right most columns out */
uint8_t *src_ptr1 = src;
uint8_t *src_ptr2 = src + width - 1;
uint8_t *dst_ptr1 = src - extend_left;
uint8_t *dst_ptr2 = src + width;
for (i = 0; i < height; ++i) {
vpx_memset(dst_ptr1, src_ptr1[0], extend_left);
vpx_memset(dst_ptr2, src_ptr2[0], extend_right);
src_ptr1 += src_stride;
src_ptr2 += src_stride;
dst_ptr1 += src_stride;
dst_ptr2 += src_stride;
}
/* Now copy the top and bottom lines into each line of the respective
* borders
*/
src_ptr1 = src - extend_left;
src_ptr2 = src + src_stride * (height - 1) - extend_left;
dst_ptr1 = src + src_stride * -extend_top - extend_left;
dst_ptr2 = src + src_stride * height - extend_left;
for (i = 0; i < extend_top; ++i) {
vpx_memcpy(dst_ptr1, src_ptr1, linesize);
dst_ptr1 += src_stride;
}
for (i = 0; i < extend_bottom; ++i) {
vpx_memcpy(dst_ptr2, src_ptr2, linesize);
dst_ptr2 += src_stride;
}
}
void vp8_yv12_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
assert(ybf->y_height - ybf->y_crop_height < 16);
assert(ybf->y_width - ybf->y_crop_width < 16);
assert(ybf->y_height - ybf->y_crop_height >= 0);
assert(ybf->y_width - ybf->y_crop_width >= 0);
extend_plane(ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ybf->border, ybf->border,
ybf->border + ybf->y_height - ybf->y_crop_height,
ybf->border + ybf->y_width - ybf->y_crop_width);
extend_plane(ybf->u_buffer, ybf->uv_stride,
(ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2,
ybf->border / 2, ybf->border / 2,
(ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2,
(ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2);
extend_plane(ybf->v_buffer, ybf->uv_stride,
(ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2,
ybf->border / 2, ybf->border / 2,
(ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2,
(ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2);
}
#if CONFIG_VP9
static void extend_frame(YV12_BUFFER_CONFIG *const ybf,
int subsampling_x, int subsampling_y,
int ext_size) {
const int c_w = (ybf->y_crop_width + subsampling_x) >> subsampling_x;
const int c_h = (ybf->y_crop_height + subsampling_y) >> subsampling_y;
const int c_et = ext_size >> subsampling_y;
const int c_el = ext_size >> subsampling_x;
const int c_eb = (ext_size + ybf->y_height - ybf->y_crop_height +
subsampling_y) >> subsampling_y;
const int c_er = (ext_size + ybf->y_width - ybf->y_crop_width +
subsampling_x) >> subsampling_x;
assert(ybf->y_height - ybf->y_crop_height < 16);
assert(ybf->y_width - ybf->y_crop_width < 16);
assert(ybf->y_height - ybf->y_crop_height >= 0);
assert(ybf->y_width - ybf->y_crop_width >= 0);
extend_plane(ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ext_size, ext_size,
ext_size + ybf->y_height - ybf->y_crop_height,
ext_size + ybf->y_width - ybf->y_crop_width);
extend_plane(ybf->u_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
extend_plane(ybf->v_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
}
void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf,
int subsampling_x, int subsampling_y) {
extend_frame(ybf, subsampling_x, subsampling_y, ybf->border);
}
void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf,
int subsampling_x, int subsampling_y) {
const int inner_bw = (ybf->border > VP9INNERBORDERINPIXELS) ?
VP9INNERBORDERINPIXELS : ybf->border;
extend_frame(ybf, subsampling_x, subsampling_y, inner_bw);
}
#endif // CONFIG_VP9
// Copies the source image into the destination image and updates the
// destination's UMV borders.
// Note: The frames are assumed to be identical in size.
void vp8_yv12_copy_frame_c(const YV12_BUFFER_CONFIG *src_ybc,
YV12_BUFFER_CONFIG *dst_ybc) {
int row;
const uint8_t *src = src_ybc->y_buffer;
uint8_t *dst = dst_ybc->y_buffer;
#if 0
/* These assertions are valid in the codec, but the libvpx-tester uses
* this code slightly differently.
*/
assert(src_ybc->y_width == dst_ybc->y_width);
assert(src_ybc->y_height == dst_ybc->y_height);
#endif
for (row = 0; row < src_ybc->y_height; ++row) {
vpx_memcpy(dst, src, src_ybc->y_width);
src += src_ybc->y_stride;
dst += dst_ybc->y_stride;
}
src = src_ybc->u_buffer;
dst = dst_ybc->u_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
vpx_memcpy(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
src = src_ybc->v_buffer;
dst = dst_ybc->v_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
vpx_memcpy(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
vp8_yv12_extend_frame_borders_c(dst_ybc);
}
void vpx_yv12_copy_y_c(const YV12_BUFFER_CONFIG *src_ybc,
YV12_BUFFER_CONFIG *dst_ybc) {
int row;
const uint8_t *src = src_ybc->y_buffer;
uint8_t *dst = dst_ybc->y_buffer;
for (row = 0; row < src_ybc->y_height; ++row) {
vpx_memcpy(dst, src, src_ybc->y_width);
src += src_ybc->y_stride;
dst += dst_ybc->y_stride;
}
}
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