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/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include "libavutil/avutil.h"
#include "libavutil/colorspace.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "drawutils.h"
enum { RED = 0, GREEN, BLUE, ALPHA };
int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w, uint8_t dst_color[4],
enum PixelFormat pix_fmt, uint8_t rgba_color[4],
int *is_packed_rgba, uint8_t rgba_map_ptr[4])
{
uint8_t rgba_map[4] = {0};
int i;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
int hsub = pix_desc->log2_chroma_w;
*is_packed_rgba = 1;
switch (pix_fmt) {
case PIX_FMT_ARGB: rgba_map[ALPHA] = 0; rgba_map[RED ] = 1; rgba_map[GREEN] = 2; rgba_map[BLUE ] = 3; break;
case PIX_FMT_ABGR: rgba_map[ALPHA] = 0; rgba_map[BLUE ] = 1; rgba_map[GREEN] = 2; rgba_map[RED ] = 3; break;
case PIX_FMT_RGBA:
case PIX_FMT_RGB24: rgba_map[RED ] = 0; rgba_map[GREEN] = 1; rgba_map[BLUE ] = 2; rgba_map[ALPHA] = 3; break;
case PIX_FMT_BGRA:
case PIX_FMT_BGR24: rgba_map[BLUE ] = 0; rgba_map[GREEN] = 1; rgba_map[RED ] = 2; rgba_map[ALPHA] = 3; break;
default:
*is_packed_rgba = 0;
}
if (*is_packed_rgba) {
pixel_step[0] = (av_get_bits_per_pixel(pix_desc))>>3;
for (i = 0; i < 4; i++)
dst_color[rgba_map[i]] = rgba_color[i];
line[0] = av_malloc(w * pixel_step[0]);
for (i = 0; i < w; i++)
memcpy(line[0] + i * pixel_step[0], dst_color, pixel_step[0]);
if (rgba_map_ptr)
memcpy(rgba_map_ptr, rgba_map, sizeof(rgba_map[0]) * 4);
} else {
int plane;
dst_color[0] = RGB_TO_Y_CCIR(rgba_color[0], rgba_color[1], rgba_color[2]);
dst_color[1] = RGB_TO_U_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
dst_color[2] = RGB_TO_V_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0);
dst_color[3] = rgba_color[3];
for (plane = 0; plane < 4; plane++) {
int line_size;
int hsub1 = (plane == 1 || plane == 2) ? hsub : 0;
pixel_step[plane] = 1;
line_size = (w >> hsub1) * pixel_step[plane];
line[plane] = av_malloc(line_size);
memset(line[plane], dst_color[plane], line_size);
}
}
return 0;
}
void ff_draw_rectangle(uint8_t *dst[4], int dst_linesize[4],
uint8_t *src[4], int pixelstep[4],
int hsub, int vsub, int x, int y, int w, int h)
{
int i, plane;
uint8_t *p;
for (plane = 0; plane < 4 && dst[plane]; plane++) {
int hsub1 = plane == 1 || plane == 2 ? hsub : 0;
int vsub1 = plane == 1 || plane == 2 ? vsub : 0;
p = dst[plane] + (y >> vsub1) * dst_linesize[plane];
for (i = 0; i < (h >> vsub1); i++) {
memcpy(p + (x >> hsub1) * pixelstep[plane],
src[plane], (w >> hsub1) * pixelstep[plane]);
p += dst_linesize[plane];
}
}
}
void ff_copy_rectangle(uint8_t *dst[4], int dst_linesize[4],
uint8_t *src[4], int src_linesize[4], int pixelstep[4],
int hsub, int vsub, int x, int y, int y2, int w, int h)
{
int i, plane;
uint8_t *p;
for (plane = 0; plane < 4 && dst[plane]; plane++) {
int hsub1 = plane == 1 || plane == 2 ? hsub : 0;
int vsub1 = plane == 1 || plane == 2 ? vsub : 0;
p = dst[plane] + (y >> vsub1) * dst_linesize[plane];
for (i = 0; i < (h >> vsub1); i++) {
memcpy(p + (x >> hsub1) * pixelstep[plane],
src[plane] + src_linesize[plane]*(i+(y2>>vsub1)), (w >> hsub1) * pixelstep[plane]);
p += dst_linesize[plane];
}
}
}
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