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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include "config.h"
#include "mp_msg.h"
#include "cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/video_out.h"
#include "m_option.h"
#include "m_struct.h"
static struct vf_priv_s {
uint8_t *buf[2];
float hue;
float saturation;
} const vf_priv_dflt = {
{NULL, NULL},
0.0,
1.0,
};
static void process_C(uint8_t *udst, uint8_t *vdst, uint8_t *usrc, uint8_t *vsrc, int dststride, int srcstride,
int w, int h, float hue, float sat)
{
int i;
const int s= rint(sin(hue) * (1<<16) * sat);
const int c= rint(cos(hue) * (1<<16) * sat);
while (h--) {
for (i = 0; i<w; i++)
{
const int u= usrc[i] - 128;
const int v= vsrc[i] - 128;
int new_u= (c*u - s*v + (1<<15) + (128<<16))>>16;
int new_v= (s*u + c*v + (1<<15) + (128<<16))>>16;
if(new_u & 768) new_u= (-new_u)>>31;
if(new_v & 768) new_v= (-new_v)>>31;
udst[i]= new_u;
vdst[i]= new_v;
}
usrc += srcstride;
vsrc += srcstride;
udst += dststride;
vdst += dststride;
}
}
static void (*process)(uint8_t *udst, uint8_t *vdst, uint8_t *usrc, uint8_t *vsrc, int dststride, int srcstride,
int w, int h, float hue, float sat);
/* FIXME: add packed yuv version of process */
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
{
mp_image_t *dmpi;
dmpi=vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_EXPORT, 0,
mpi->w, mpi->h);
dmpi->planes[0] = mpi->planes[0];
dmpi->stride[0] = mpi->stride[0];
dmpi->stride[1] = mpi->stride[1];
dmpi->stride[2] = mpi->stride[2];
if (!vf->priv->buf[0]){
vf->priv->buf[0] = malloc(mpi->stride[1]*mpi->h >> mpi->chroma_y_shift);
vf->priv->buf[1] = malloc(mpi->stride[2]*mpi->h >> mpi->chroma_y_shift);
}
if (vf->priv->hue == 0 && vf->priv->saturation == 1){
dmpi->planes[1] = mpi->planes[1];
dmpi->planes[2] = mpi->planes[2];
}else {
dmpi->planes[1] = vf->priv->buf[0];
dmpi->planes[2] = vf->priv->buf[1];
process(dmpi->planes[1], dmpi->planes[2],
mpi->planes[1], mpi->planes[2],
dmpi->stride[1],mpi->stride[1],
mpi->w>> mpi->chroma_x_shift, mpi->h>> mpi->chroma_y_shift,
vf->priv->hue, vf->priv->saturation);
}
return vf_next_put_image(vf,dmpi, pts);
}
static int control(struct vf_instance *vf, int request, void* data)
{
vf_equalizer_t *eq;
switch (request) {
case VFCTRL_SET_EQUALIZER:
eq = data;
if (!strcmp(eq->item,"hue")) {
vf->priv->hue = eq->value * M_PI / 100;
return CONTROL_TRUE;
} else if (!strcmp(eq->item,"saturation")) {
vf->priv->saturation = (eq->value + 100)/100.0;
return CONTROL_TRUE;
}
break;
case VFCTRL_GET_EQUALIZER:
eq = data;
if (!strcmp(eq->item,"hue")) {
eq->value = rint(vf->priv->hue *100 / M_PI);
return CONTROL_TRUE;
}else if (!strcmp(eq->item,"saturation")) {
eq->value = rint(vf->priv->saturation*100 - 100);
return CONTROL_TRUE;
}
break;
}
return vf_next_control(vf, request, data);
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
switch (fmt) {
case IMGFMT_YVU9:
case IMGFMT_IF09:
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
case IMGFMT_CLPL:
case IMGFMT_444P:
case IMGFMT_422P:
case IMGFMT_411P:
return vf_next_query_format(vf, fmt);
}
return 0;
}
static void uninit(struct vf_instance *vf)
{
free(vf->priv->buf[0]);
free(vf->priv->buf[1]);
free(vf->priv);
}
static int vf_open(vf_instance_t *vf, char *args)
{
vf->control=control;
vf->query_format=query_format;
vf->put_image=put_image;
vf->uninit=uninit;
vf->priv->hue *= M_PI / 180.0;
process = process_C;
return 1;
}
#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
static const m_option_t vf_opts_fields[] = {
{"hue", ST_OFF(hue), CONF_TYPE_FLOAT, M_OPT_RANGE,-180.0 ,180.0, NULL},
{"saturation", ST_OFF(saturation), CONF_TYPE_FLOAT, M_OPT_RANGE,-10.0 ,10.0, NULL},
{ NULL, NULL, 0, 0, 0, 0, NULL }
};
static const m_struct_t vf_opts = {
"hue",
sizeof(struct vf_priv_s),
&vf_priv_dflt,
vf_opts_fields
};
const vf_info_t vf_info_hue = {
"hue changer",
"hue",
"Michael Niedermayer",
"",
vf_open,
&vf_opts
};
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