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/*
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2009 Giliard B. de Freitas <giliarde@gmail.com>
* Copyright (C) 2002 Gunnar Monell <gmo@linux.nu>
*
* 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 <stdlib.h>
#include "fbdev_common.h"
#include "libavutil/common.h"
struct rgb_pixfmt_map_entry {
int bits_per_pixel;
int red_offset, green_offset, blue_offset, alpha_offset;
enum AVPixelFormat pixfmt;
};
static const struct rgb_pixfmt_map_entry rgb_pixfmt_map[] = {
// bpp, red_offset, green_offset, blue_offset, alpha_offset, pixfmt
{ 32, 0, 8, 16, 24, AV_PIX_FMT_RGBA },
{ 32, 16, 8, 0, 24, AV_PIX_FMT_BGRA },
{ 32, 8, 16, 24, 0, AV_PIX_FMT_ARGB },
{ 32, 3, 2, 8, 0, AV_PIX_FMT_ABGR },
{ 24, 0, 8, 16, 0, AV_PIX_FMT_RGB24 },
{ 24, 16, 8, 0, 0, AV_PIX_FMT_BGR24 },
{ 16, 11, 5, 0, 16, AV_PIX_FMT_RGB565 },
};
enum AVPixelFormat ff_get_pixfmt_from_fb_varinfo(struct fb_var_screeninfo *varinfo)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(rgb_pixfmt_map); i++) {
const struct rgb_pixfmt_map_entry *entry = &rgb_pixfmt_map[i];
if (entry->bits_per_pixel == varinfo->bits_per_pixel &&
entry->red_offset == varinfo->red.offset &&
entry->green_offset == varinfo->green.offset &&
entry->blue_offset == varinfo->blue.offset)
return entry->pixfmt;
}
return AV_PIX_FMT_NONE;
}
const char* ff_fbdev_default_device()
{
const char *dev = getenv("FRAMEBUFFER");
if (!dev)
dev = "/dev/fb0";
return dev;
}
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