mirror of https://git.ffmpeg.org/ffmpeg.git
290 lines
8.5 KiB
C
290 lines
8.5 KiB
C
/*
|
|
* Copyright (c) 2002 Brian Foley
|
|
* Copyright (c) 2002 Dieter Shirley
|
|
* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#if HAVE_ALTIVEC_H
|
|
#include <altivec.h>
|
|
#endif
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/ppc/types_altivec.h"
|
|
#include "libavutil/ppc/util_altivec.h"
|
|
#include "libavcodec/avcodec.h"
|
|
#include "libavcodec/pixblockdsp.h"
|
|
|
|
#if HAVE_ALTIVEC
|
|
|
|
#if HAVE_VSX
|
|
static void get_pixels_altivec(int16_t *restrict block, const uint8_t *pixels,
|
|
ptrdiff_t line_size)
|
|
{
|
|
int i;
|
|
vector unsigned char perm =
|
|
(vector unsigned char) {0x00,0x10, 0x01,0x11,0x02,0x12,0x03,0x13,\
|
|
0x04,0x14,0x05,0x15,0x06,0x16,0x07,0x17};
|
|
const vector unsigned char zero =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
vector unsigned char bytes = vec_vsx_ld(0, pixels);
|
|
|
|
// Convert the bytes into shorts.
|
|
//vector signed short shorts = (vector signed short) vec_perm(zero, bytes, perm);
|
|
vector signed short shorts = (vector signed short) vec_perm(bytes, zero, perm);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_vsx_st(shorts, i * 16, (vector signed short *) block);
|
|
|
|
pixels += line_size;
|
|
}
|
|
}
|
|
#else
|
|
static void get_pixels_altivec(int16_t *restrict block, const uint8_t *pixels,
|
|
ptrdiff_t line_size)
|
|
{
|
|
int i;
|
|
vec_u8 perm = vec_lvsl(0, pixels);
|
|
const vec_u8 zero = (const vec_u8)vec_splat_u8(0);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
vec_u8 pixl = vec_ld(0, pixels);
|
|
vec_u8 pixr = vec_ld(7, pixels);
|
|
vec_u8 bytes = vec_perm(pixl, pixr, perm);
|
|
|
|
// Convert the bytes into shorts.
|
|
vec_s16 shorts = (vec_s16)vec_mergeh(zero, bytes);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_st(shorts, i * 16, (vec_s16 *)block);
|
|
|
|
pixels += line_size;
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_VSX */
|
|
|
|
#if HAVE_VSX
|
|
static void diff_pixels_altivec(int16_t *restrict block, const uint8_t *s1,
|
|
const uint8_t *s2, int stride)
|
|
{
|
|
int i;
|
|
const vector unsigned char zero =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
vector signed short shorts1, shorts2;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
vector unsigned char bytes = vec_vsx_ld(0, s1);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts1 = (vector signed short) vec_mergeh(bytes, zero);
|
|
|
|
// Do the same for the second block of pixels.
|
|
bytes =vec_vsx_ld(0, s2);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts2 = (vector signed short) vec_mergeh(bytes, zero);
|
|
|
|
// Do the subtraction.
|
|
shorts1 = vec_sub(shorts1, shorts2);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_vsx_st(shorts1, 0, (vector signed short *) block);
|
|
|
|
s1 += stride;
|
|
s2 += stride;
|
|
block += 8;
|
|
|
|
/* The code below is a copy of the code above...
|
|
* This is a manual unroll. */
|
|
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
bytes = vec_vsx_ld(0, s1);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts1 = (vector signed short) vec_mergeh(bytes, zero);
|
|
|
|
// Do the same for the second block of pixels.
|
|
bytes = vec_vsx_ld(0, s2);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts2 = (vector signed short) vec_mergeh(bytes, zero);
|
|
|
|
// Do the subtraction.
|
|
shorts1 = vec_sub(shorts1, shorts2);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_vsx_st(shorts1, 0, (vector signed short *) block);
|
|
|
|
s1 += stride;
|
|
s2 += stride;
|
|
block += 8;
|
|
}
|
|
}
|
|
#else
|
|
static void diff_pixels_altivec(int16_t *restrict block, const uint8_t *s1,
|
|
const uint8_t *s2, int stride)
|
|
{
|
|
int i;
|
|
vec_u8 perm1 = vec_lvsl(0, s1);
|
|
vec_u8 perm2 = vec_lvsl(0, s2);
|
|
const vec_u8 zero = (const vec_u8)vec_splat_u8(0);
|
|
vec_s16 shorts1, shorts2;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
vec_u8 pixl = vec_ld(0, s1);
|
|
vec_u8 pixr = vec_ld(15, s1);
|
|
vec_u8 bytes = vec_perm(pixl, pixr, perm1);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts1 = (vec_s16)vec_mergeh(zero, bytes);
|
|
|
|
// Do the same for the second block of pixels.
|
|
pixl = vec_ld(0, s2);
|
|
pixr = vec_ld(15, s2);
|
|
bytes = vec_perm(pixl, pixr, perm2);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts2 = (vec_s16)vec_mergeh(zero, bytes);
|
|
|
|
// Do the subtraction.
|
|
shorts1 = vec_sub(shorts1, shorts2);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_st(shorts1, 0, (vec_s16 *)block);
|
|
|
|
s1 += stride;
|
|
s2 += stride;
|
|
block += 8;
|
|
|
|
/* The code below is a copy of the code above...
|
|
* This is a manual unroll. */
|
|
|
|
/* Read potentially unaligned pixels.
|
|
* We're reading 16 pixels, and actually only want 8,
|
|
* but we simply ignore the extras. */
|
|
pixl = vec_ld(0, s1);
|
|
pixr = vec_ld(15, s1);
|
|
bytes = vec_perm(pixl, pixr, perm1);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts1 = (vec_s16)vec_mergeh(zero, bytes);
|
|
|
|
// Do the same for the second block of pixels.
|
|
pixl = vec_ld(0, s2);
|
|
pixr = vec_ld(15, s2);
|
|
bytes = vec_perm(pixl, pixr, perm2);
|
|
|
|
// Convert the bytes into shorts.
|
|
shorts2 = (vec_s16)vec_mergeh(zero, bytes);
|
|
|
|
// Do the subtraction.
|
|
shorts1 = vec_sub(shorts1, shorts2);
|
|
|
|
// Save the data to the block, we assume the block is 16-byte aligned.
|
|
vec_st(shorts1, 0, (vec_s16 *)block);
|
|
|
|
s1 += stride;
|
|
s2 += stride;
|
|
block += 8;
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_VSX */
|
|
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
#if HAVE_VSX
|
|
static void get_pixels_vsx(int16_t *restrict block, const uint8_t *pixels,
|
|
ptrdiff_t line_size)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 8; i++) {
|
|
vec_s16 shorts = vsx_ld_u8_s16(0, pixels);
|
|
|
|
vec_vsx_st(shorts, i * 16, block);
|
|
|
|
pixels += line_size;
|
|
}
|
|
}
|
|
|
|
static void diff_pixels_vsx(int16_t *restrict block, const uint8_t *s1,
|
|
const uint8_t *s2, int stride)
|
|
{
|
|
int i;
|
|
vec_s16 shorts1, shorts2;
|
|
for (i = 0; i < 8; i++) {
|
|
shorts1 = vsx_ld_u8_s16(0, s1);
|
|
shorts2 = vsx_ld_u8_s16(0, s2);
|
|
|
|
shorts1 = vec_sub(shorts1, shorts2);
|
|
|
|
vec_vsx_st(shorts1, 0, block);
|
|
|
|
s1 += stride;
|
|
s2 += stride;
|
|
block += 8;
|
|
}
|
|
}
|
|
#endif /* HAVE_VSX */
|
|
|
|
av_cold void ff_pixblockdsp_init_ppc(PixblockDSPContext *c,
|
|
AVCodecContext *avctx,
|
|
unsigned high_bit_depth)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->diff_pixels = diff_pixels_altivec;
|
|
|
|
if (!high_bit_depth) {
|
|
c->get_pixels = get_pixels_altivec;
|
|
}
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
#if HAVE_VSX
|
|
if (!PPC_VSX(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->diff_pixels = diff_pixels_vsx;
|
|
|
|
if (!high_bit_depth)
|
|
c->get_pixels = get_pixels_vsx;
|
|
#endif /* HAVE_VSX */
|
|
}
|