mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
|
|
* 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 "extend.h"
|
|
#include "vpx_mem/vpx_mem.h"
|
|
|
|
|
|
static void extend_plane_borders
|
|
(
|
|
unsigned char *s, /* source */
|
|
int sp, /* pitch */
|
|
int h, /* height */
|
|
int w, /* width */
|
|
int et, /* extend top border */
|
|
int el, /* extend left border */
|
|
int eb, /* extend bottom border */
|
|
int er /* extend right border */
|
|
)
|
|
{
|
|
|
|
int i;
|
|
unsigned char *src_ptr1, *src_ptr2;
|
|
unsigned char *dest_ptr1, *dest_ptr2;
|
|
int linesize;
|
|
|
|
/* copy the left and right most columns out */
|
|
src_ptr1 = s;
|
|
src_ptr2 = s + w - 1;
|
|
dest_ptr1 = s - el;
|
|
dest_ptr2 = s + w;
|
|
|
|
for (i = 0; i < h - 0 + 1; i++)
|
|
{
|
|
/* Some linkers will complain if we call vpx_memset with el set to a
|
|
* constant 0.
|
|
*/
|
|
if (el)
|
|
vpx_memset(dest_ptr1, src_ptr1[0], el);
|
|
vpx_memset(dest_ptr2, src_ptr2[0], er);
|
|
src_ptr1 += sp;
|
|
src_ptr2 += sp;
|
|
dest_ptr1 += sp;
|
|
dest_ptr2 += sp;
|
|
}
|
|
|
|
/* Now copy the top and bottom source lines into each line of the respective borders */
|
|
src_ptr1 = s - el;
|
|
src_ptr2 = s + sp * (h - 1) - el;
|
|
dest_ptr1 = s + sp * (-et) - el;
|
|
dest_ptr2 = s + sp * (h) - el;
|
|
linesize = el + er + w + 1;
|
|
|
|
for (i = 0; i < (int)et; i++)
|
|
{
|
|
vpx_memcpy(dest_ptr1, src_ptr1, linesize);
|
|
dest_ptr1 += sp;
|
|
}
|
|
|
|
for (i = 0; i < (int)eb; i++)
|
|
{
|
|
vpx_memcpy(dest_ptr2, src_ptr2, linesize);
|
|
dest_ptr2 += sp;
|
|
}
|
|
}
|
|
|
|
|
|
void vp8_extend_to_multiple_of16(YV12_BUFFER_CONFIG *ybf, int width, int height)
|
|
{
|
|
int er = 0xf & (16 - (width & 0xf));
|
|
int eb = 0xf & (16 - (height & 0xf));
|
|
|
|
/* check for non multiples of 16 */
|
|
if (er != 0 || eb != 0)
|
|
{
|
|
extend_plane_borders(ybf->y_buffer, ybf->y_stride, height, width, 0, 0, eb, er);
|
|
|
|
/* adjust for uv */
|
|
height = (height + 1) >> 1;
|
|
width = (width + 1) >> 1;
|
|
er = 0x7 & (8 - (width & 0x7));
|
|
eb = 0x7 & (8 - (height & 0x7));
|
|
|
|
if (er || eb)
|
|
{
|
|
extend_plane_borders(ybf->u_buffer, ybf->uv_stride, height, width, 0, 0, eb, er);
|
|
extend_plane_borders(ybf->v_buffer, ybf->uv_stride, height, width, 0, 0, eb, er);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* note the extension is only for the last row, for intra prediction purpose */
|
|
void vp8_extend_mb_row(YV12_BUFFER_CONFIG *ybf, unsigned char *YPtr, unsigned char *UPtr, unsigned char *VPtr)
|
|
{
|
|
int i;
|
|
|
|
YPtr += ybf->y_stride * 14;
|
|
UPtr += ybf->uv_stride * 6;
|
|
VPtr += ybf->uv_stride * 6;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
YPtr[i] = YPtr[-1];
|
|
UPtr[i] = UPtr[-1];
|
|
VPtr[i] = VPtr[-1];
|
|
}
|
|
|
|
YPtr += ybf->y_stride;
|
|
UPtr += ybf->uv_stride;
|
|
VPtr += ybf->uv_stride;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
YPtr[i] = YPtr[-1];
|
|
UPtr[i] = UPtr[-1];
|
|
VPtr[i] = VPtr[-1];
|
|
}
|
|
}
|