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/*
* Copyright (c) 2008-2009 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "loadsurface_yuv.h"
static int scale_2dimage(unsigned char *src_img, int src_imgw, int src_imgh,
unsigned char *dst_img, int dst_imgw, int dst_imgh)
{
int row=0, col=0;
for (row=0; row<dst_imgh; row++) {
for (col=0; col<dst_imgw; col++) {
*(dst_img + row * dst_imgw + col) = *(src_img + (row * src_imgh/dst_imgh) * src_imgw + col * src_imgw/dst_imgw);
}
}
return 0;
}
static int YUV_blend_with_pic(int width, int height,
unsigned char *Y_start, int Y_pitch,
unsigned char *U_start, int U_pitch,
unsigned char *V_start, int V_pitch,
int UV_interleave, int fixed_alpha)
{
/* PIC YUV format */
unsigned char *pic_y_old = yuvga_pic;
unsigned char *pic_u_old = pic_y_old + 640*480;
unsigned char *pic_v_old = pic_u_old + 640*480/4;
unsigned char *pic_y, *pic_u, *pic_v;
int alpha_values[] = {100,90,80,70,60,50,40,30,20,30,40,50,60,70,80,90};
static int alpha_idx = 0;
int alpha;
int allocated = 0;
int row, col;
if (fixed_alpha == 0) {
alpha = alpha_values[alpha_idx % 16 ];
alpha_idx ++;
} else
alpha = fixed_alpha;
//alpha = 0;
pic_y = pic_y_old;
pic_u = pic_u_old;
pic_v = pic_v_old;
if (width != 640 || height != 480) { /* need to scale the pic */
pic_y = (unsigned char *)malloc(width * height);
pic_u = (unsigned char *)malloc(width * height/4);
pic_v = (unsigned char *)malloc(width * height/4);
allocated = 1;
scale_2dimage(pic_y_old, 640, 480,
pic_y, width, height);
scale_2dimage(pic_u_old, 320, 240,
pic_u, width/2, height/2);
scale_2dimage(pic_v_old, 320, 240,
pic_v, width/2, height/2);
}
/* begin blend */
/* Y plane */
for (row=0; row<height; row++)
for (col=0; col<width; col++) {
unsigned char *p = Y_start + row * Y_pitch + col;
unsigned char *q = pic_y + row * width + col;
*p = *p * (100 - alpha) / 100 + *q * alpha/100;
}
if (UV_interleave == 0) {
for (row=0; row<height/2; row++)
for (col=0; col<width/2; col++) {
unsigned char *p = U_start + row * U_pitch + col;
unsigned char *q = pic_u + row * width/2 + col;
*p = *p * (100 - alpha) / 100 + *q * alpha/100;
}
for (row=0; row<height/2; row++)
for (col=0; col<width/2; col++) {
unsigned char *p = V_start + row * V_pitch + col;
unsigned char *q = pic_v + row * width/2 + col;
*p = *p * (100 - alpha) / 100 + *q * alpha/100;
}
} else { /* NV12 */
for (row=0; row<height/2; row++)
for (col=0; col<width/2; col++) {
unsigned char *pU = U_start + row * U_pitch + col*2;
unsigned char *qU = pic_u + row * width/2 + col;
unsigned char *pV = pU + 1;
unsigned char *qV = pic_v + row * width/2 + col;
*pU = *pU * (100 - alpha) / 100 + *qU * alpha/100;
*pV = *pV * (100 - alpha) / 100 + *qV * alpha/100;
}
}
if (allocated) {
free(pic_y);
free(pic_u);
free(pic_v);
}
return 0;
}
static int yuvgen_planar(int width, int height,
unsigned char *Y_start, int Y_pitch,
unsigned char *U_start, int U_pitch,
unsigned char *V_start, int V_pitch,
int UV_interleave, int box_width, int row_shift,
int field)
{
int row, alpha;
/* copy Y plane */
for (row=0;row<height;row++) {
unsigned char *Y_row = Y_start + row * Y_pitch;
int jj, xpos, ypos;
ypos = (row / box_width) & 0x1;
/* fill garbage data into the other field */
if (((field == VA_TOP_FIELD) && (row &1))
|| ((field == VA_BOTTOM_FIELD) && ((row &1)==0))) {
memset(Y_row, 0xff, width);
continue;
}
for (jj=0; jj<width; jj++) {
xpos = ((row_shift + jj) / box_width) & 0x1;
if ((xpos == 0) && (ypos == 0))
Y_row[jj] = 0xeb;
if ((xpos == 1) && (ypos == 1))
Y_row[jj] = 0xeb;
if ((xpos == 1) && (ypos == 0))
Y_row[jj] = 0x10;
if ((xpos == 0) && (ypos == 1))
Y_row[jj] = 0x10;
}
}
/* copy UV data */
for( row =0; row < height/2; row++) {
unsigned short value = 0x80;
/* fill garbage data into the other field */
if (((field == VA_TOP_FIELD) && (row &1))
|| ((field == VA_BOTTOM_FIELD) && ((row &1)==0))) {
value = 0xff;
}
if (UV_interleave) {
unsigned short *UV_row = (unsigned short *)(U_start + row * U_pitch);
memset(UV_row, value, width);
} else {
unsigned char *U_row = U_start + row * U_pitch;
unsigned char *V_row = V_start + row * V_pitch;
memset (U_row,value,width/2);
memset (V_row,value,width/2);
}
}
if (getenv("AUTO_NOUV"))
return 0;
if (getenv("AUTO_ALPHA"))
alpha = 0;
else
alpha = 70;
YUV_blend_with_pic(width,height,
Y_start, Y_pitch,
U_start, U_pitch,
V_start, V_pitch,
UV_interleave, alpha);
return 0;
}
static int upload_surface(VADisplay va_dpy, VASurfaceID surface_id,
int box_width, int row_shift,
int field)
{
VAImage surface_image;
void *surface_p=NULL, *U_start,*V_start;
VAStatus va_status;
va_status = vaDeriveImage(va_dpy,surface_id,&surface_image);
CHECK_VASTATUS(va_status,"vaDeriveImage");
vaMapBuffer(va_dpy,surface_image.buf,&surface_p);
assert(VA_STATUS_SUCCESS == va_status);
U_start = (char *)surface_p + surface_image.offsets[1];
V_start = (char *)surface_p + surface_image.offsets[2];
/* assume surface is planar format */
yuvgen_planar(surface_image.width, surface_image.height,
(unsigned char *)surface_p, surface_image.pitches[0],
(unsigned char *)U_start, surface_image.pitches[1],
(unsigned char *)V_start, surface_image.pitches[2],
(surface_image.format.fourcc==VA_FOURCC_NV12),
box_width, row_shift, field);
vaUnmapBuffer(va_dpy,surface_image.buf);
vaDestroyImage(va_dpy,surface_image.image_id);
return 0;
}
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