mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
205 lines
8.5 KiB
C
205 lines
8.5 KiB
C
/*
|
|
* AltiVec-enhanced yuv-to-yuv conversion routines.
|
|
*
|
|
* Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org>
|
|
* based on the equivalent C code in swscale.c
|
|
*
|
|
* 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 <inttypes.h>
|
|
|
|
#include "config.h"
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libswscale/swscale.h"
|
|
#include "libswscale/swscale_internal.h"
|
|
|
|
#if HAVE_ALTIVEC
|
|
|
|
static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t *src[],
|
|
int srcStride[], int srcSliceY,
|
|
int srcSliceH, uint8_t *dstParam[],
|
|
int dstStride_a[])
|
|
{
|
|
uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
|
|
// yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
|
|
// srcStride[0], srcStride[1], dstStride[0]);
|
|
const uint8_t *ysrc = src[0];
|
|
const uint8_t *usrc = src[1];
|
|
const uint8_t *vsrc = src[2];
|
|
const int width = c->srcW;
|
|
const int height = srcSliceH;
|
|
const int lumStride = srcStride[0];
|
|
const int chromStride = srcStride[1];
|
|
const int dstStride = dstStride_a[0];
|
|
const vector unsigned char yperm = vec_lvsl(0, ysrc);
|
|
const int vertLumPerChroma = 2;
|
|
register unsigned int y;
|
|
|
|
/* This code assumes:
|
|
*
|
|
* 1) dst is 16 bytes-aligned
|
|
* 2) dstStride is a multiple of 16
|
|
* 3) width is a multiple of 16
|
|
* 4) lum & chrom stride are multiples of 8
|
|
*/
|
|
|
|
for (y = 0; y < height; y++) {
|
|
int i;
|
|
for (i = 0; i < width - 31; i += 32) {
|
|
const unsigned int j = i >> 1;
|
|
vector unsigned char v_yA = vec_ld(i, ysrc);
|
|
vector unsigned char v_yB = vec_ld(i + 16, ysrc);
|
|
vector unsigned char v_yC = vec_ld(i + 32, ysrc);
|
|
vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
|
|
vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
|
|
vector unsigned char v_uA = vec_ld(j, usrc);
|
|
vector unsigned char v_uB = vec_ld(j + 16, usrc);
|
|
vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
|
|
vector unsigned char v_vA = vec_ld(j, vsrc);
|
|
vector unsigned char v_vB = vec_ld(j + 16, vsrc);
|
|
vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
|
|
vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
|
|
vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
|
|
vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
|
|
vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
|
|
vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
|
|
vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
|
|
vec_st(v_yuy2_0, (i << 1), dst);
|
|
vec_st(v_yuy2_1, (i << 1) + 16, dst);
|
|
vec_st(v_yuy2_2, (i << 1) + 32, dst);
|
|
vec_st(v_yuy2_3, (i << 1) + 48, dst);
|
|
}
|
|
if (i < width) {
|
|
const unsigned int j = i >> 1;
|
|
vector unsigned char v_y1 = vec_ld(i, ysrc);
|
|
vector unsigned char v_u = vec_ld(j, usrc);
|
|
vector unsigned char v_v = vec_ld(j, vsrc);
|
|
vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
|
|
vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
|
|
vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
|
|
vec_st(v_yuy2_0, (i << 1), dst);
|
|
vec_st(v_yuy2_1, (i << 1) + 16, dst);
|
|
}
|
|
if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
|
|
usrc += chromStride;
|
|
vsrc += chromStride;
|
|
}
|
|
ysrc += lumStride;
|
|
dst += dstStride;
|
|
}
|
|
|
|
return srcSliceH;
|
|
}
|
|
|
|
static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t *src[],
|
|
int srcStride[], int srcSliceY,
|
|
int srcSliceH, uint8_t *dstParam[],
|
|
int dstStride_a[])
|
|
{
|
|
uint8_t *dst = dstParam[0] + dstStride_a[0] * srcSliceY;
|
|
// yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH,
|
|
// srcStride[0], srcStride[1], dstStride[0]);
|
|
const uint8_t *ysrc = src[0];
|
|
const uint8_t *usrc = src[1];
|
|
const uint8_t *vsrc = src[2];
|
|
const int width = c->srcW;
|
|
const int height = srcSliceH;
|
|
const int lumStride = srcStride[0];
|
|
const int chromStride = srcStride[1];
|
|
const int dstStride = dstStride_a[0];
|
|
const int vertLumPerChroma = 2;
|
|
const vector unsigned char yperm = vec_lvsl(0, ysrc);
|
|
register unsigned int y;
|
|
|
|
/* This code assumes:
|
|
*
|
|
* 1) dst is 16 bytes-aligned
|
|
* 2) dstStride is a multiple of 16
|
|
* 3) width is a multiple of 16
|
|
* 4) lum & chrom stride are multiples of 8
|
|
*/
|
|
|
|
for (y = 0; y < height; y++) {
|
|
int i;
|
|
for (i = 0; i < width - 31; i += 32) {
|
|
const unsigned int j = i >> 1;
|
|
vector unsigned char v_yA = vec_ld(i, ysrc);
|
|
vector unsigned char v_yB = vec_ld(i + 16, ysrc);
|
|
vector unsigned char v_yC = vec_ld(i + 32, ysrc);
|
|
vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
|
|
vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
|
|
vector unsigned char v_uA = vec_ld(j, usrc);
|
|
vector unsigned char v_uB = vec_ld(j + 16, usrc);
|
|
vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
|
|
vector unsigned char v_vA = vec_ld(j, vsrc);
|
|
vector unsigned char v_vB = vec_ld(j + 16, vsrc);
|
|
vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
|
|
vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
|
|
vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
|
|
vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
|
|
vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
|
|
vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
|
|
vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
|
|
vec_st(v_uyvy_0, (i << 1), dst);
|
|
vec_st(v_uyvy_1, (i << 1) + 16, dst);
|
|
vec_st(v_uyvy_2, (i << 1) + 32, dst);
|
|
vec_st(v_uyvy_3, (i << 1) + 48, dst);
|
|
}
|
|
if (i < width) {
|
|
const unsigned int j = i >> 1;
|
|
vector unsigned char v_y1 = vec_ld(i, ysrc);
|
|
vector unsigned char v_u = vec_ld(j, usrc);
|
|
vector unsigned char v_v = vec_ld(j, vsrc);
|
|
vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
|
|
vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
|
|
vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
|
|
vec_st(v_uyvy_0, (i << 1), dst);
|
|
vec_st(v_uyvy_1, (i << 1) + 16, dst);
|
|
}
|
|
if ((y & (vertLumPerChroma - 1)) == vertLumPerChroma - 1) {
|
|
usrc += chromStride;
|
|
vsrc += chromStride;
|
|
}
|
|
ysrc += lumStride;
|
|
dst += dstStride;
|
|
}
|
|
return srcSliceH;
|
|
}
|
|
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
av_cold void ff_get_unscaled_swscale_ppc(SwsContext *c)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
|
|
return;
|
|
|
|
if (!(c->srcW & 15) && !(c->flags & SWS_BITEXACT) &&
|
|
c->srcFormat == AV_PIX_FMT_YUV420P) {
|
|
enum AVPixelFormat dstFormat = c->dstFormat;
|
|
|
|
// unscaled YV12 -> packed YUV, we want speed
|
|
if (dstFormat == AV_PIX_FMT_YUYV422)
|
|
c->convert_unscaled = yv12toyuy2_unscaled_altivec;
|
|
else if (dstFormat == AV_PIX_FMT_UYVY422)
|
|
c->convert_unscaled = yv12touyvy_unscaled_altivec;
|
|
}
|
|
#endif /* HAVE_ALTIVEC */
|
|
}
|