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fa3bfeb1c1
Use device specified by environment variable FRAMEBUFFER or /dev/fb0 as default. Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/*
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* Copyright (c) 2011 Stefano Sabatini
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* Copyright (c) 2009 Giliard B. de Freitas <giliarde@gmail.com>
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* Copyright (C) 2002 Gunnar Monell <gmo@linux.nu>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include "fbdev_common.h"
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#include "libavutil/common.h"
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struct rgb_pixfmt_map_entry {
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int bits_per_pixel;
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int red_offset, green_offset, blue_offset, alpha_offset;
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enum AVPixelFormat pixfmt;
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};
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static const struct rgb_pixfmt_map_entry rgb_pixfmt_map[] = {
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// bpp, red_offset, green_offset, blue_offset, alpha_offset, pixfmt
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{ 32, 0, 8, 16, 24, AV_PIX_FMT_RGBA },
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{ 32, 16, 8, 0, 24, AV_PIX_FMT_BGRA },
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{ 32, 8, 16, 24, 0, AV_PIX_FMT_ARGB },
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{ 32, 3, 2, 8, 0, AV_PIX_FMT_ABGR },
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{ 24, 0, 8, 16, 0, AV_PIX_FMT_RGB24 },
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{ 24, 16, 8, 0, 0, AV_PIX_FMT_BGR24 },
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{ 16, 11, 5, 0, 16, AV_PIX_FMT_RGB565 },
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};
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enum AVPixelFormat ff_get_pixfmt_from_fb_varinfo(struct fb_var_screeninfo *varinfo)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(rgb_pixfmt_map); i++) {
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const struct rgb_pixfmt_map_entry *entry = &rgb_pixfmt_map[i];
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if (entry->bits_per_pixel == varinfo->bits_per_pixel &&
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entry->red_offset == varinfo->red.offset &&
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entry->green_offset == varinfo->green.offset &&
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entry->blue_offset == varinfo->blue.offset)
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return entry->pixfmt;
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}
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return AV_PIX_FMT_NONE;
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}
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const char* ff_fbdev_default_device()
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{
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const char *dev = getenv("FRAMEBUFFER");
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if (!dev)
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dev = "/dev/fb0";
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return dev;
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}
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