| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2011 Stefano Sabatini | ||
| 3 | * Copyright (c) 2009 Giliard B. de Freitas <giliarde@gmail.com> | ||
| 4 | * Copyright (C) 2002 Gunnar Monell <gmo@linux.nu> | ||
| 5 | * | ||
| 6 | * This file is part of FFmpeg. | ||
| 7 | * | ||
| 8 | * FFmpeg is free software; you can redistribute it and/or | ||
| 9 | * modify it under the terms of the GNU Lesser General Public | ||
| 10 | * License as published by the Free Software Foundation; either | ||
| 11 | * version 2.1 of the License, or (at your option) any later version. | ||
| 12 | * | ||
| 13 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 16 | * Lesser General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU Lesser General Public | ||
| 19 | * License along with FFmpeg; if not, write to the Free Software | ||
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 21 | */ | ||
| 22 | |||
| 23 | #include <unistd.h> | ||
| 24 | #include <fcntl.h> | ||
| 25 | #include <sys/ioctl.h> | ||
| 26 | #include <stdlib.h> | ||
| 27 | #include "fbdev_common.h" | ||
| 28 | #include "libavutil/common.h" | ||
| 29 | #include "libavutil/file_open.h" | ||
| 30 | #include "libavutil/mem.h" | ||
| 31 | #include "avdevice.h" | ||
| 32 | |||
| 33 | struct rgb_pixfmt_map_entry { | ||
| 34 | int bits_per_pixel; | ||
| 35 | int red_offset, green_offset, blue_offset, alpha_offset; | ||
| 36 | enum AVPixelFormat pixfmt; | ||
| 37 | }; | ||
| 38 | |||
| 39 | static const struct rgb_pixfmt_map_entry rgb_pixfmt_map[] = { | ||
| 40 | // bpp, red_offset, green_offset, blue_offset, alpha_offset, pixfmt | ||
| 41 | { 32, 0, 8, 16, 24, AV_PIX_FMT_RGBA }, | ||
| 42 | { 32, 16, 8, 0, 24, AV_PIX_FMT_BGRA }, | ||
| 43 | { 32, 8, 16, 24, 0, AV_PIX_FMT_ARGB }, | ||
| 44 | { 32, 3, 2, 8, 0, AV_PIX_FMT_ABGR }, | ||
| 45 | { 24, 0, 8, 16, 0, AV_PIX_FMT_RGB24 }, | ||
| 46 | { 24, 16, 8, 0, 0, AV_PIX_FMT_BGR24 }, | ||
| 47 | { 16, 11, 5, 0, 0, AV_PIX_FMT_RGB565 }, | ||
| 48 | }; | ||
| 49 | |||
| 50 | ✗ | enum AVPixelFormat ff_get_pixfmt_from_fb_varinfo(struct fb_var_screeninfo *varinfo) | |
| 51 | { | ||
| 52 | int i; | ||
| 53 | |||
| 54 | ✗ | for (i = 0; i < FF_ARRAY_ELEMS(rgb_pixfmt_map); i++) { | |
| 55 | ✗ | const struct rgb_pixfmt_map_entry *entry = &rgb_pixfmt_map[i]; | |
| 56 | ✗ | if (entry->bits_per_pixel == varinfo->bits_per_pixel && | |
| 57 | ✗ | entry->red_offset == varinfo->red.offset && | |
| 58 | ✗ | entry->green_offset == varinfo->green.offset && | |
| 59 | ✗ | entry->blue_offset == varinfo->blue.offset) | |
| 60 | ✗ | return entry->pixfmt; | |
| 61 | } | ||
| 62 | |||
| 63 | ✗ | return AV_PIX_FMT_NONE; | |
| 64 | } | ||
| 65 | |||
| 66 | ✗ | const char *ff_fbdev_default_device(void) | |
| 67 | { | ||
| 68 | ✗ | const char *dev = getenv("FRAMEBUFFER"); | |
| 69 | ✗ | if (!dev) | |
| 70 | ✗ | dev = "/dev/fb0"; | |
| 71 | ✗ | return dev; | |
| 72 | } | ||
| 73 | |||
| 74 | ✗ | int ff_fbdev_get_device_list(AVDeviceInfoList *device_list) | |
| 75 | ✗ | { | |
| 76 | struct fb_var_screeninfo varinfo; | ||
| 77 | struct fb_fix_screeninfo fixinfo; | ||
| 78 | char device_file[12]; | ||
| 79 | ✗ | AVDeviceInfo *device = NULL; | |
| 80 | ✗ | int i, fd, ret = 0; | |
| 81 | ✗ | const char *default_device = ff_fbdev_default_device(); | |
| 82 | |||
| 83 | ✗ | if (!device_list) | |
| 84 | ✗ | return AVERROR(EINVAL); | |
| 85 | |||
| 86 | ✗ | for (i = 0; i <= 31; i++) { | |
| 87 | ✗ | snprintf(device_file, sizeof(device_file), "/dev/fb%d", i); | |
| 88 | |||
| 89 | ✗ | if ((fd = avpriv_open(device_file, O_RDWR)) < 0) { | |
| 90 | ✗ | int err = AVERROR(errno); | |
| 91 | ✗ | if (err != AVERROR(ENOENT)) | |
| 92 | ✗ | av_log(NULL, AV_LOG_ERROR, "Could not open framebuffer device '%s': %s\n", | |
| 93 | ✗ | device_file, av_err2str(err)); | |
| 94 | ✗ | continue; | |
| 95 | } | ||
| 96 | ✗ | if (ioctl(fd, FBIOGET_VSCREENINFO, &varinfo) == -1) | |
| 97 | ✗ | goto fail_device; | |
| 98 | ✗ | if (ioctl(fd, FBIOGET_FSCREENINFO, &fixinfo) == -1) | |
| 99 | ✗ | goto fail_device; | |
| 100 | |||
| 101 | ✗ | device = av_mallocz(sizeof(AVDeviceInfo)); | |
| 102 | ✗ | if (!device) { | |
| 103 | ✗ | ret = AVERROR(ENOMEM); | |
| 104 | ✗ | goto fail_device; | |
| 105 | } | ||
| 106 | ✗ | device->device_name = av_strdup(device_file); | |
| 107 | ✗ | device->device_description = av_strdup(fixinfo.id); | |
| 108 | ✗ | if (!device->device_name || !device->device_description) { | |
| 109 | ✗ | ret = AVERROR(ENOMEM); | |
| 110 | ✗ | goto fail_device; | |
| 111 | } | ||
| 112 | |||
| 113 | ✗ | if ((ret = av_dynarray_add_nofree(&device_list->devices, | |
| 114 | &device_list->nb_devices, device)) < 0) | ||
| 115 | ✗ | goto fail_device; | |
| 116 | |||
| 117 | ✗ | if (default_device && !strcmp(device->device_name, default_device)) { | |
| 118 | ✗ | device_list->default_device = device_list->nb_devices - 1; | |
| 119 | ✗ | default_device = NULL; | |
| 120 | } | ||
| 121 | ✗ | close(fd); | |
| 122 | ✗ | continue; | |
| 123 | |||
| 124 | ✗ | fail_device: | |
| 125 | ✗ | if (device) { | |
| 126 | ✗ | av_freep(&device->device_name); | |
| 127 | ✗ | av_freep(&device->device_description); | |
| 128 | ✗ | av_freep(&device); | |
| 129 | } | ||
| 130 | ✗ | if (fd >= 0) | |
| 131 | ✗ | close(fd); | |
| 132 | ✗ | if (ret < 0) | |
| 133 | ✗ | return ret; | |
| 134 | } | ||
| 135 | ✗ | return 0; | |
| 136 | } | ||
| 137 |