ref: 0ced701487583049635386c801b415b4255eec86
dir: /vp8/common/arm/filter_arm.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 "vpx_ports/config.h"
#include <math.h>
#include "subpixel.h"
#include "vpx_ports/mem.h"
#define BLOCK_HEIGHT_WIDTH 4
#define VP8_FILTER_WEIGHT 128
#define VP8_FILTER_SHIFT 7
DECLARE_ALIGNED(16, static const short, sub_pel_filters[8][6]) =
{
{ 0, 0, 128, 0, 0, 0 }, /* note that 1/8 pel positions are just as per alpha -0.5 bicubic */
{ 0, -6, 123, 12, -1, 0 },
{ 2, -11, 108, 36, -8, 1 }, /* New 1/4 pel 6 tap filter */
{ 0, -9, 93, 50, -6, 0 },
{ 3, -16, 77, 77, -16, 3 }, /* New 1/2 pel 6 tap filter */
{ 0, -6, 50, 93, -9, 0 },
{ 1, -8, 36, 108, -11, 2 }, /* New 1/4 pel 6 tap filter */
{ 0, -1, 12, 123, -6, 0 },
};
extern void vp8_filter_block2d_first_pass_armv6
(
unsigned char *src_ptr,
short *output_ptr,
unsigned int src_pixels_per_line,
unsigned int output_width,
unsigned int output_height,
const short *vp8_filter
);
extern void vp8_filter_block2d_second_pass_armv6
(
short *src_ptr,
unsigned char *output_ptr,
unsigned int output_pitch,
unsigned int cnt,
const short *vp8_filter
);
extern void vp8_filter4_block2d_second_pass_armv6
(
short *src_ptr,
unsigned char *output_ptr,
unsigned int output_pitch,
unsigned int cnt,
const short *vp8_filter
);
extern void vp8_filter_block2d_first_pass_only_armv6
(
unsigned char *src_ptr,
unsigned char *output_ptr,
unsigned int src_pixels_per_line,
unsigned int cnt,
unsigned int output_pitch,
const short *vp8_filter
);
extern void vp8_filter_block2d_second_pass_only_armv6
(
unsigned char *src_ptr,
unsigned char *output_ptr,
unsigned int src_pixels_per_line,
unsigned int cnt,
unsigned int output_pitch,
const short *vp8_filter
);
#if HAVE_ARMV6
void vp8_sixtap_predict_armv6
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
DECLARE_ALIGNED_ARRAY(4, short, FData, 12*4); /* Temp data bufffer used in filtering */
HFilter = sub_pel_filters[xoffset]; /* 6 tap */
VFilter = sub_pel_filters[yoffset]; /* 6 tap */
/* Vfilter is null. First pass only */
if (xoffset && !yoffset)
{
/*vp8_filter_block2d_first_pass_armv6 ( src_ptr, FData+2, src_pixels_per_line, 4, 4, HFilter );
vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, VFilter );*/
vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, HFilter);
}
/* Hfilter is null. Second pass only */
else if (!xoffset && yoffset)
{
vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 4, dst_pitch, VFilter);
}
else
{
/* Vfilter is a 4 tap filter */
if (yoffset & 0x1)
{
vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 4, 7, HFilter);
vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 4, VFilter);
}
/* Vfilter is 6 tap filter */
else
{
vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 4, 9, HFilter);
vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 4, VFilter);
}
}
}
#if 0
void vp8_sixtap_predict8x4_armv6
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); /* Temp data bufffer used in filtering */
HFilter = sub_pel_filters[xoffset]; /* 6 tap */
VFilter = sub_pel_filters[yoffset]; /* 6 tap */
/*if (xoffset && !yoffset)
{
vp8_filter_block2d_first_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter );
}*/
/* Hfilter is null. Second pass only */
/*else if (!xoffset && yoffset)
{
vp8_filter_block2d_second_pass_only_armv6 ( src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter );
}
else
{
if (yoffset & 0x1)
vp8_filter_block2d_first_pass_armv6 ( src_ptr-src_pixels_per_line, FData+1, src_pixels_per_line, 8, 7, HFilter );
else*/
vp8_filter_block2d_first_pass_armv6 ( src_ptr-(2*src_pixels_per_line), FData, src_pixels_per_line, 8, 9, HFilter );
vp8_filter_block2d_second_pass_armv6 ( FData+2, dst_ptr, dst_pitch, 4, 8, VFilter );
/*}*/
}
#endif
void vp8_sixtap_predict8x8_armv6
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
DECLARE_ALIGNED_ARRAY(4, short, FData, 16*8); /* Temp data bufffer used in filtering */
HFilter = sub_pel_filters[xoffset]; /* 6 tap */
VFilter = sub_pel_filters[yoffset]; /* 6 tap */
if (xoffset && !yoffset)
{
vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, HFilter);
}
/* Hfilter is null. Second pass only */
else if (!xoffset && yoffset)
{
vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 8, dst_pitch, VFilter);
}
else
{
if (yoffset & 0x1)
{
vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 8, 11, HFilter);
vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 8, VFilter);
}
else
{
vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 8, 13, HFilter);
vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 8, VFilter);
}
}
}
void vp8_sixtap_predict16x16_armv6
(
unsigned char *src_ptr,
int src_pixels_per_line,
int xoffset,
int yoffset,
unsigned char *dst_ptr,
int dst_pitch
)
{
const short *HFilter;
const short *VFilter;
DECLARE_ALIGNED_ARRAY(4, short, FData, 24*16); /* Temp data bufffer used in filtering */
HFilter = sub_pel_filters[xoffset]; /* 6 tap */
VFilter = sub_pel_filters[yoffset]; /* 6 tap */
if (xoffset && !yoffset)
{
vp8_filter_block2d_first_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, HFilter);
}
/* Hfilter is null. Second pass only */
else if (!xoffset && yoffset)
{
vp8_filter_block2d_second_pass_only_armv6(src_ptr, dst_ptr, src_pixels_per_line, 16, dst_pitch, VFilter);
}
else
{
if (yoffset & 0x1)
{
vp8_filter_block2d_first_pass_armv6(src_ptr - src_pixels_per_line, FData + 1, src_pixels_per_line, 16, 19, HFilter);
vp8_filter4_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 16, VFilter);
}
else
{
vp8_filter_block2d_first_pass_armv6(src_ptr - (2 * src_pixels_per_line), FData, src_pixels_per_line, 16, 21, HFilter);
vp8_filter_block2d_second_pass_armv6(FData + 2, dst_ptr, dst_pitch, 16, VFilter);
}
}
}
#endif