vpx/vp9/encoder/vp9_satd_c.c
Ronald S. Bultje 4cca47b538 Use standard integer types for pixel values and coefficients.
For coefficients, use int16_t (instead of short); for pixel values in
16-bit intermediates, use uint16_t (instead of unsigned short); for all
others, use uint8_t (instead of unsigned char).

Change-Id: I3619cd9abf106c3742eccc2e2f5e89a62774f7da
2012-12-18 15:31:19 -08:00

49 lines
1.3 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 <stdlib.h>
#include "vpx_ports/mem.h"
#include "./vp9_rtcd.h"
unsigned int vp9_satd16x16_c(const uint8_t *src_ptr,
int src_stride,
const uint8_t *ref_ptr,
int ref_stride,
unsigned int *psatd) {
int r, c, i;
unsigned int satd = 0;
DECLARE_ALIGNED(16, int16_t, diff_in[256]);
DECLARE_ALIGNED(16, int16_t, diff_out[16]);
int16_t *in;
for (r = 0; r < 16; r++) {
for (c = 0; c < 16; c++) {
diff_in[r * 16 + c] = src_ptr[c] - ref_ptr[c];
}
src_ptr += src_stride;
ref_ptr += ref_stride;
}
in = diff_in;
for (r = 0; r < 16; r += 4) {
for (c = 0; c < 16; c += 4) {
vp9_short_walsh4x4_c(in + c, diff_out, 32);
for (i = 0; i < 16; i++)
satd += abs(diff_out[i]);
}
in += 64;
}
if (psatd)
*psatd = satd;
return satd;
}