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https://git.ffmpeg.org/ffmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
137 lines
4.6 KiB
C
137 lines
4.6 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 <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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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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#include "libavutil/file_open.h"
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#include "libavutil/mem.h"
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#include "avdevice.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, 0, 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(void)
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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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int ff_fbdev_get_device_list(AVDeviceInfoList *device_list)
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{
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struct fb_var_screeninfo varinfo;
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struct fb_fix_screeninfo fixinfo;
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char device_file[12];
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AVDeviceInfo *device = NULL;
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int i, fd, ret = 0;
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const char *default_device = ff_fbdev_default_device();
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if (!device_list)
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return AVERROR(EINVAL);
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for (i = 0; i <= 31; i++) {
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snprintf(device_file, sizeof(device_file), "/dev/fb%d", i);
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if ((fd = avpriv_open(device_file, O_RDWR)) < 0) {
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int err = AVERROR(errno);
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if (err != AVERROR(ENOENT))
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av_log(NULL, AV_LOG_ERROR, "Could not open framebuffer device '%s': %s\n",
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device_file, av_err2str(err));
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continue;
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}
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if (ioctl(fd, FBIOGET_VSCREENINFO, &varinfo) == -1)
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goto fail_device;
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if (ioctl(fd, FBIOGET_FSCREENINFO, &fixinfo) == -1)
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goto fail_device;
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device = av_mallocz(sizeof(AVDeviceInfo));
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if (!device) {
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ret = AVERROR(ENOMEM);
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goto fail_device;
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}
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device->device_name = av_strdup(device_file);
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device->device_description = av_strdup(fixinfo.id);
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if (!device->device_name || !device->device_description) {
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ret = AVERROR(ENOMEM);
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goto fail_device;
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}
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if ((ret = av_dynarray_add_nofree(&device_list->devices,
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&device_list->nb_devices, device)) < 0)
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goto fail_device;
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if (default_device && !strcmp(device->device_name, default_device)) {
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device_list->default_device = device_list->nb_devices - 1;
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default_device = NULL;
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}
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close(fd);
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continue;
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fail_device:
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if (device) {
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av_freep(&device->device_name);
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av_freep(&device->device_description);
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av_freep(&device);
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}
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if (fd >= 0)
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close(fd);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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