a0ae3682aa
This patch fixes the system dependent entries for the half-pixel
variance functions in both the RTCD and non-RTCD cases:
- The generic C versions of these functions are now correct.
Before all three cases called the hv code.
- Wire up the ARM functions in RTCD mode
- Created stubs for x86 to call the optimized subpixel functions
with the correct parameters, rather than falling back to C
code.
Change-Id: I1d937d074d929e0eb93aacb1232cc5e0ad1c6184
564 lines
16 KiB
C
564 lines
16 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "variance.h"
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const int vp8_six_tap[8][6] =
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{
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{ 0, 0, 128, 0, 0, 0 }, // note that 1/8 pel positions are just as per alpha -0.5 bicubic
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{ 0, -6, 123, 12, -1, 0 },
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{ 2, -11, 108, 36, -8, 1 }, // New 1/4 pel 6 tap filter
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{ 0, -9, 93, 50, -6, 0 },
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{ 3, -16, 77, 77, -16, 3 }, // New 1/2 pel 6 tap filter
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{ 0, -6, 50, 93, -9, 0 },
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{ 1, -8, 36, 108, -11, 2 }, // New 1/4 pel 6 tap filter
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{ 0, -1, 12, 123, -6, 0 }
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};
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const int VP8_FILTER_WEIGHT = 128;
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const int VP8_FILTER_SHIFT = 7;
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const int vp8_bilinear_taps[8][2] =
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{
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{ 128, 0 },
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{ 112, 16 },
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{ 96, 32 },
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{ 80, 48 },
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{ 64, 64 },
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{ 48, 80 },
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{ 32, 96 },
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{ 16, 112 }
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};
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unsigned int vp8_get_mb_ss_c
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(
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const short *src_ptr
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)
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{
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unsigned int i = 0, sum = 0;
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do
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{
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sum += (src_ptr[i] * src_ptr[i]);
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i++;
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}
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while (i < 256);
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return sum;
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}
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void vp8_variance(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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int w,
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int h,
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unsigned int *sse,
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int *sum)
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{
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int i, j;
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int diff;
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*sum = 0;
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*sse = 0;
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for (i = 0; i < h; i++)
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{
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for (j = 0; j < w; j++)
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{
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diff = src_ptr[j] - ref_ptr[j];
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*sum += diff;
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*sse += diff * diff;
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}
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src_ptr += source_stride;
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ref_ptr += recon_stride;
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}
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}
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unsigned int
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vp8_get8x8var_c
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(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *SSE,
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int *Sum
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)
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{
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 8, 8, SSE, Sum);
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return (*SSE - (((*Sum) * (*Sum)) >> 6));
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}
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unsigned int
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vp8_get16x16var_c
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(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *SSE,
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int *Sum
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)
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{
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 16, SSE, Sum);
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return (*SSE - (((*Sum) * (*Sum)) >> 8));
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}
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unsigned int vp8_variance16x16_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 16, &var, &avg);
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*sse = var;
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return (var - ((avg * avg) >> 8));
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}
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unsigned int vp8_variance8x16_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 8, 16, &var, &avg);
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*sse = var;
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return (var - ((avg * avg) >> 7));
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}
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unsigned int vp8_variance16x8_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 8, &var, &avg);
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*sse = var;
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return (var - ((avg * avg) >> 7));
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}
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unsigned int vp8_variance8x8_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 8, 8, &var, &avg);
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*sse = var;
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return (var - ((avg * avg) >> 6));
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}
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unsigned int vp8_variance4x4_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 4, 4, &var, &avg);
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*sse = var;
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return (var - ((avg * avg) >> 4));
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}
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unsigned int vp8_mse16x16_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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unsigned int var;
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int avg;
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vp8_variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 16, &var, &avg);
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*sse = var;
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return var;
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}
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/****************************************************************************
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*
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* ROUTINE : filter_block2d_bil_first_pass
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*
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* INPUTS : UINT8 *src_ptr : Pointer to source block.
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* UINT32 src_pixels_per_line : Stride of input block.
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* UINT32 pixel_step : Offset between filter input samples (see notes).
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* UINT32 output_height : Input block height.
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* UINT32 output_width : Input block width.
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* INT32 *vp8_filter : Array of 2 bi-linear filter taps.
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*
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* OUTPUTS : INT32 *output_ptr : Pointer to filtered block.
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*
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* RETURNS : void
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*
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* FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block in
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* either horizontal or vertical direction to produce the
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* filtered output block. Used to implement first-pass
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* of 2-D separable filter.
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*
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* SPECIAL NOTES : Produces INT32 output to retain precision for next pass.
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* Two filter taps should sum to VP8_FILTER_WEIGHT.
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* pixel_step defines whether the filter is applied
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* horizontally (pixel_step=1) or vertically (pixel_step=stride).
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* It defines the offset required to move from one input
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* to the next.
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*
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****************************************************************************/
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void vp8e_filter_block2d_bil_first_pass
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(
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const unsigned char *src_ptr,
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unsigned short *output_ptr,
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unsigned int src_pixels_per_line,
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int pixel_step,
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unsigned int output_height,
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unsigned int output_width,
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const int *vp8_filter
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)
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{
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unsigned int i, j;
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for (i = 0; i < output_height; i++)
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{
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for (j = 0; j < output_width; j++)
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{
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// Apply bilinear filter
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output_ptr[j] = (((int)src_ptr[0] * vp8_filter[0]) +
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((int)src_ptr[pixel_step] * vp8_filter[1]) +
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(VP8_FILTER_WEIGHT / 2)) >> VP8_FILTER_SHIFT;
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src_ptr++;
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}
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// Next row...
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src_ptr += src_pixels_per_line - output_width;
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output_ptr += output_width;
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}
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}
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/****************************************************************************
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*
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* ROUTINE : filter_block2d_bil_second_pass
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*
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* INPUTS : INT32 *src_ptr : Pointer to source block.
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* UINT32 src_pixels_per_line : Stride of input block.
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* UINT32 pixel_step : Offset between filter input samples (see notes).
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* UINT32 output_height : Input block height.
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* UINT32 output_width : Input block width.
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* INT32 *vp8_filter : Array of 2 bi-linear filter taps.
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*
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* OUTPUTS : UINT16 *output_ptr : Pointer to filtered block.
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*
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* RETURNS : void
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*
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* FUNCTION : Applies a 1-D 2-tap bi-linear filter to the source block in
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* either horizontal or vertical direction to produce the
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* filtered output block. Used to implement second-pass
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* of 2-D separable filter.
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*
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* SPECIAL NOTES : Requires 32-bit input as produced by filter_block2d_bil_first_pass.
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* Two filter taps should sum to VP8_FILTER_WEIGHT.
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* pixel_step defines whether the filter is applied
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* horizontally (pixel_step=1) or vertically (pixel_step=stride).
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* It defines the offset required to move from one input
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* to the next.
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*
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****************************************************************************/
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void vp8e_filter_block2d_bil_second_pass
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(
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const unsigned short *src_ptr,
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unsigned char *output_ptr,
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unsigned int src_pixels_per_line,
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unsigned int pixel_step,
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unsigned int output_height,
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unsigned int output_width,
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const int *vp8_filter
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)
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{
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unsigned int i, j;
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int Temp;
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for (i = 0; i < output_height; i++)
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{
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for (j = 0; j < output_width; j++)
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{
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// Apply filter
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Temp = ((int)src_ptr[0] * vp8_filter[0]) +
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((int)src_ptr[pixel_step] * vp8_filter[1]) +
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(VP8_FILTER_WEIGHT / 2);
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output_ptr[j] = (unsigned int)(Temp >> VP8_FILTER_SHIFT);
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src_ptr++;
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}
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// Next row...
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src_ptr += src_pixels_per_line - output_width;
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output_ptr += output_width;
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}
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}
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/****************************************************************************
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*
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* ROUTINE : filter_block2d_bil
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*
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* INPUTS : UINT8 *src_ptr : Pointer to source block.
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* UINT32 src_pixels_per_line : Stride of input block.
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* INT32 *HFilter : Array of 2 horizontal filter taps.
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* INT32 *VFilter : Array of 2 vertical filter taps.
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*
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* OUTPUTS : UINT16 *output_ptr : Pointer to filtered block.
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*
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* RETURNS : void
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*
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* FUNCTION : 2-D filters an 8x8 input block by applying a 2-tap
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* bi-linear filter horizontally followed by a 2-tap
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* bi-linear filter vertically on the result.
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*
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* SPECIAL NOTES : The intermediate horizontally filtered block must produce
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* 1 more point than the input block in each column. This
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* is to ensure that the 2-tap filter has one extra data-point
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* at the top of each column so filter taps do not extend
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* beyond data. Thus the output of the first stage filter
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* is an 8x9 (hx_v) block.
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*
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****************************************************************************/
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void vp8e_filter_block2d_bil
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(
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const unsigned char *src_ptr,
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unsigned char *output_ptr,
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unsigned int src_pixels_per_line,
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int *HFilter,
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int *VFilter
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)
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{
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unsigned short FData[20*16]; // Temp data bufffer used in filtering
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// First filter 1-D horizontally...
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vp8e_filter_block2d_bil_first_pass(src_ptr, FData, src_pixels_per_line, 1, 9, 8, HFilter);
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// then 1-D vertically...
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vp8e_filter_block2d_bil_second_pass(FData, output_ptr, 8, 8, 8, 8, VFilter);
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}
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unsigned int vp8_sub_pixel_variance4x4_c
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(
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const unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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const unsigned char *dst_ptr,
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int dst_pixels_per_line,
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unsigned int *sse
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)
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{
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unsigned char temp2[20*16];
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const int *HFilter, *VFilter;
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unsigned short FData3[5*4]; // Temp data bufffer used in filtering
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HFilter = vp8_bilinear_taps[xoffset];
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VFilter = vp8_bilinear_taps[yoffset];
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// First filter 1d Horizontal
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vp8e_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 5, 4, HFilter);
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// Now filter Verticaly
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vp8e_filter_block2d_bil_second_pass(FData3, temp2, 4, 4, 4, 4, VFilter);
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return vp8_variance4x4_c(temp2, 4, dst_ptr, dst_pixels_per_line, sse);
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}
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unsigned int vp8_sub_pixel_variance8x8_c
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(
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const unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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const unsigned char *dst_ptr,
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int dst_pixels_per_line,
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unsigned int *sse
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)
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{
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unsigned short FData3[9*8]; // Temp data bufffer used in filtering
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unsigned char temp2[20*16];
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const int *HFilter, *VFilter;
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HFilter = vp8_bilinear_taps[xoffset];
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VFilter = vp8_bilinear_taps[yoffset];
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vp8e_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 9, 8, HFilter);
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vp8e_filter_block2d_bil_second_pass(FData3, temp2, 8, 8, 8, 8, VFilter);
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return vp8_variance8x8_c(temp2, 8, dst_ptr, dst_pixels_per_line, sse);
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}
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unsigned int vp8_sub_pixel_variance16x16_c
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(
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const unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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const unsigned char *dst_ptr,
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int dst_pixels_per_line,
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unsigned int *sse
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)
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{
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unsigned short FData3[17*16]; // Temp data bufffer used in filtering
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unsigned char temp2[20*16];
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const int *HFilter, *VFilter;
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HFilter = vp8_bilinear_taps[xoffset];
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VFilter = vp8_bilinear_taps[yoffset];
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vp8e_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 17, 16, HFilter);
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vp8e_filter_block2d_bil_second_pass(FData3, temp2, 16, 16, 16, 16, VFilter);
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return vp8_variance16x16_c(temp2, 16, dst_ptr, dst_pixels_per_line, sse);
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}
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unsigned int vp8_variance_halfpixvar16x16_h_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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return vp8_sub_pixel_variance16x16_c(src_ptr, source_stride, 4, 0,
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ref_ptr, recon_stride, sse);
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}
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unsigned int vp8_variance_halfpixvar16x16_v_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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return vp8_sub_pixel_variance16x16_c(src_ptr, source_stride, 0, 4,
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ref_ptr, recon_stride, sse);
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}
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unsigned int vp8_variance_halfpixvar16x16_hv_c(
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const unsigned char *src_ptr,
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int source_stride,
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const unsigned char *ref_ptr,
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int recon_stride,
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unsigned int *sse)
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{
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return vp8_sub_pixel_variance16x16_c(src_ptr, source_stride, 4, 4,
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ref_ptr, recon_stride, sse);
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}
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|
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unsigned int vp8_sub_pixel_mse16x16_c
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(
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const unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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const unsigned char *dst_ptr,
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int dst_pixels_per_line,
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unsigned int *sse
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)
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{
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vp8_sub_pixel_variance16x16_c(src_ptr, src_pixels_per_line, xoffset, yoffset, dst_ptr, dst_pixels_per_line, sse);
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return *sse;
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}
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unsigned int vp8_sub_pixel_variance16x8_c
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(
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const unsigned char *src_ptr,
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int src_pixels_per_line,
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int xoffset,
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int yoffset,
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const unsigned char *dst_ptr,
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int dst_pixels_per_line,
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unsigned int *sse
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|
)
|
|
{
|
|
unsigned short FData3[16*9]; // Temp data bufffer used in filtering
|
|
unsigned char temp2[20*16];
|
|
const int *HFilter, *VFilter;
|
|
|
|
HFilter = vp8_bilinear_taps[xoffset];
|
|
VFilter = vp8_bilinear_taps[yoffset];
|
|
|
|
vp8e_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 9, 16, HFilter);
|
|
vp8e_filter_block2d_bil_second_pass(FData3, temp2, 16, 16, 8, 16, VFilter);
|
|
|
|
return vp8_variance16x8_c(temp2, 16, dst_ptr, dst_pixels_per_line, sse);
|
|
}
|
|
|
|
unsigned int vp8_sub_pixel_variance8x16_c
|
|
(
|
|
const unsigned char *src_ptr,
|
|
int src_pixels_per_line,
|
|
int xoffset,
|
|
int yoffset,
|
|
const unsigned char *dst_ptr,
|
|
int dst_pixels_per_line,
|
|
unsigned int *sse
|
|
)
|
|
{
|
|
unsigned short FData3[9*16]; // Temp data bufffer used in filtering
|
|
unsigned char temp2[20*16];
|
|
const int *HFilter, *VFilter;
|
|
|
|
|
|
HFilter = vp8_bilinear_taps[xoffset];
|
|
VFilter = vp8_bilinear_taps[yoffset];
|
|
|
|
|
|
vp8e_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 17, 8, HFilter);
|
|
vp8e_filter_block2d_bil_second_pass(FData3, temp2, 8, 8, 16, 8, VFilter);
|
|
|
|
return vp8_variance8x16_c(temp2, 8, dst_ptr, dst_pixels_per_line, sse);
|
|
}
|