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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "config.h"
#include "mp_msg.h"
#include "cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libswscale/rgb2rgb.h"
struct vf_priv_s {
int field;
};
#ifdef HAVE_MMX
static void halfpack_MMX(unsigned char *dst, unsigned char *src[3],
int dststride, int srcstride[3],
int w, int h)
{
int j;
unsigned char *y1, *y2, *u, *v;
int dstinc, yinc, uinc, vinc;
y1 = src[0];
y2 = src[0] + srcstride[0];
u = src[1];
v = src[2];
dstinc = dststride - 2*w;
yinc = 2*srcstride[0] - w;
uinc = srcstride[1] - w/2;
vinc = srcstride[2] - w/2;
for (h/=2; h; h--) {
asm (
"pxor %%mm0, %%mm0 \n\t"
ASMALIGN(4)
"1: \n\t"
"movq (%0), %%mm1 \n\t"
"movq (%0), %%mm2 \n\t"
"movq (%1), %%mm3 \n\t"
"movq (%1), %%mm4 \n\t"
"punpcklbw %%mm0, %%mm1 \n\t"
"punpckhbw %%mm0, %%mm2 \n\t"
"punpcklbw %%mm0, %%mm3 \n\t"
"punpckhbw %%mm0, %%mm4 \n\t"
"paddw %%mm3, %%mm1 \n\t"
"paddw %%mm4, %%mm2 \n\t"
"psrlw $1, %%mm1 \n\t"
"psrlw $1, %%mm2 \n\t"
"movq (%2), %%mm3 \n\t"
"movq (%3), %%mm5 \n\t"
"punpcklbw %%mm0, %%mm3 \n\t"
"punpcklbw %%mm0, %%mm5 \n\t"
"movq %%mm3, %%mm4 \n\t"
"movq %%mm5, %%mm6 \n\t"
"punpcklwd %%mm0, %%mm3 \n\t"
"punpckhwd %%mm0, %%mm4 \n\t"
"punpcklwd %%mm0, %%mm5 \n\t"
"punpckhwd %%mm0, %%mm6 \n\t"
"pslld $8, %%mm3 \n\t"
"pslld $8, %%mm4 \n\t"
"pslld $24, %%mm5 \n\t"
"pslld $24, %%mm6 \n\t"
"por %%mm3, %%mm1 \n\t"
"por %%mm4, %%mm2 \n\t"
"por %%mm5, %%mm1 \n\t"
"por %%mm6, %%mm2 \n\t"
"add $8, %0 \n\t"
"add $8, %1 \n\t"
"add $4, %2 \n\t"
"add $4, %3 \n\t"
"movq %%mm1, (%8) \n\t"
"movq %%mm2, 8(%8) \n\t"
"add $16, %8 \n\t"
"decl %9 \n\t"
"jnz 1b \n\t"
: "=r" (y1), "=r" (y2), "=r" (u), "=r" (v)
: "0" (y1), "1" (y2), "2" (u), "3" (v), "r" (dst), "r" (w/8)
: "memory"
);
for (j = (w&7)/2; j; j--) {
*dst++ = (*y1++ + *y2++)/2;
*dst++ = *u++;
*dst++ = (*y1++ + *y2++)/2;
*dst++ = *v++;
}
y1 += yinc;
y2 += yinc;
u += uinc;
v += vinc;
dst += dstinc;
}
asm volatile ( "emms \n\t" ::: "memory" );
}
#endif
static void halfpack_C(unsigned char *dst, unsigned char *src[3],
int dststride, int srcstride[3],
int w, int h)
{
int i, j;
unsigned char *y1, *y2, *u, *v;
int dstinc, yinc, uinc, vinc;
y1 = src[0];
y2 = src[0] + srcstride[0];
u = src[1];
v = src[2];
dstinc = dststride - 2*w;
yinc = 2*srcstride[0] - w;
uinc = srcstride[1] - w/2;
vinc = srcstride[2] - w/2;
for (i = h/2; i; i--) {
for (j = w/2; j; j--) {
*dst++ = (*y1++ + *y2++)>>1;
*dst++ = *u++;
*dst++ = (*y1++ + *y2++)>>1;
*dst++ = *v++;
}
y1 += yinc;
y2 += yinc;
u += uinc;
v += vinc;
dst += dstinc;
}
}
static void (*halfpack)(unsigned char *dst, unsigned char *src[3],
int dststride, int srcstride[3], int w, int h);
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
{
mp_image_t *dmpi;
// hope we'll get DR buffer:
dmpi=vf_get_image(vf->next, IMGFMT_YUY2,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w, mpi->h/2);
switch(vf->priv->field) {
case 0:
case 1:
yuv422ptoyuy2(mpi->planes[0] + mpi->stride[0]*vf->priv->field,
mpi->planes[1], mpi->planes[2], dmpi->planes[0],
mpi->w, mpi->h/2, mpi->stride[0]*2, mpi->stride[1], dmpi->stride[0]);
break;
default:
halfpack(dmpi->planes[0], mpi->planes, dmpi->stride[0],
mpi->stride, mpi->w, mpi->h);
}
return vf_next_put_image(vf,dmpi, pts);
}
static int config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
/* FIXME - also support UYVY output? */
return vf_next_config(vf, width, height/2, d_width, d_height, flags, IMGFMT_YUY2);
}
static int query_format(struct vf_instance_s* vf, unsigned int fmt)
{
/* FIXME - really any YUV 4:2:0 input format should work */
switch (fmt) {
case IMGFMT_YV12:
case IMGFMT_IYUV:
case IMGFMT_I420:
return vf_next_query_format(vf,IMGFMT_YUY2);
}
return 0;
}
static void uninit(struct vf_instance_s* vf)
{
free(vf->priv);
}
static int open(vf_instance_t *vf, char* args)
{
vf->config=config;
vf->query_format=query_format;
vf->put_image=put_image;
vf->uninit=uninit;
vf->priv = calloc(1, sizeof (struct vf_priv_s));
vf->priv->field = 2;
if (args) sscanf(args, "%d", &vf->priv->field);
halfpack = halfpack_C;
#ifdef HAVE_MMX
if(gCpuCaps.hasMMX) halfpack = halfpack_MMX;
#endif
return 1;
}
const vf_info_t vf_info_halfpack = {
"yuv planar 4:2:0 -> packed 4:2:2, half height",
"halfpack",
"Richard Felker",
"",
open,
NULL
};
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