Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit 55fe25b418640fad04190103274841b2c907bacd

Authored by Mauro Carvalho Chehab
1 parent 1fb03673b9
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[media] Remove the old V4L1 v4lgrab.c file 

This example file uses the old V4L1 API. It also doesn't use libv4l.
So, it is completely obsolete. A good example already exists at
v4l-utils (v4l2grab.c):
	http://git.linuxtv.org/v4l-utils.git

Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Showing 3 changed files with 1 additions and 210 deletions Side-by-side Diff

Documentation/Makefile
Diff comments   View file @ 55fe25b
1 1 obj-m := DocBook/ accounting/ auxdisplay/ connector/ \
2 2 filesystems/ filesystems/configfs/ ia64/ laptops/ networking/ \
3   - pcmcia/ spi/ timers/ video4linux/ vm/ watchdog/src/
  3 + pcmcia/ spi/ timers/ vm/ watchdog/src/
Documentation/video4linux/Makefile
View file @ 55fe25b
1   -# kbuild trick to avoid linker error. Can be omitted if a module is built.
2   -obj- := dummy.o
3   -
4   -# List of programs to build
5   -hostprogs-y := v4lgrab
6   -
7   -# Tell kbuild to always build the programs
8   -always := $(hostprogs-y)
Documentation/video4linux/v4lgrab.c
View file @ 55fe25b
1   -/* Simple Video4Linux image grabber. */
2   -/*
3   - * Video4Linux Driver Test/Example Framegrabbing Program
4   - *
5   - * Compile with:
6   - * gcc -s -Wall -Wstrict-prototypes v4lgrab.c -o v4lgrab
7   - * Use as:
8   - * v4lgrab >image.ppm
9   - *
10   - * Copyright (C) 1998-05-03, Phil Blundell <philb@gnu.org>
11   - * Copied from http://www.tazenda.demon.co.uk/phil/vgrabber.c
12   - * with minor modifications (Dave Forrest, drf5n@virginia.edu).
13   - *
14   - *
15   - * For some cameras you may need to pre-load libv4l to perform
16   - * the necessary decompression, e.g.:
17   - *
18   - * export LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so
19   - * ./v4lgrab >image.ppm
20   - *
21   - * see http://hansdegoede.livejournal.com/3636.html for details.
22   - *
23   - */
24   -
25   -#include <unistd.h>
26   -#include <sys/types.h>
27   -#include <sys/stat.h>
28   -#include <fcntl.h>
29   -#include <stdio.h>
30   -#include <sys/ioctl.h>
31   -#include <stdlib.h>
32   -
33   -#include <linux/types.h>
34   -#include <linux/videodev.h>
35   -
36   -#define VIDEO_DEV "/dev/video0"
37   -
38   -/* Stole this from tvset.c */
39   -
40   -#define READ_VIDEO_PIXEL(buf, format, depth, r, g, b) \
41   -{ \
42   - switch (format) \
43   - { \
44   - case VIDEO_PALETTE_GREY: \
45   - switch (depth) \
46   - { \
47   - case 4: \
48   - case 6: \
49   - case 8: \
50   - (r) = (g) = (b) = (*buf++ << 8);\
51   - break; \
52   - \
53   - case 16: \
54   - (r) = (g) = (b) = \
55   - *((unsigned short *) buf); \
56   - buf += 2; \
57   - break; \
58   - } \
59   - break; \
60   - \
61   - \
62   - case VIDEO_PALETTE_RGB565: \
63   - { \
64   - unsigned short tmp = *(unsigned short *)buf; \
65   - (r) = tmp&0xF800; \
66   - (g) = (tmp<<5)&0xFC00; \
67   - (b) = (tmp<<11)&0xF800; \
68   - buf += 2; \
69   - } \
70   - break; \
71   - \
72   - case VIDEO_PALETTE_RGB555: \
73   - (r) = (buf[0]&0xF8)<<8; \
74   - (g) = ((buf[0] << 5 | buf[1] >> 3)&0xF8)<<8; \
75   - (b) = ((buf[1] << 2 ) & 0xF8)<<8; \
76   - buf += 2; \
77   - break; \
78   - \
79   - case VIDEO_PALETTE_RGB24: \
80   - (r) = buf[0] << 8; (g) = buf[1] << 8; \
81   - (b) = buf[2] << 8; \
82   - buf += 3; \
83   - break; \
84   - \
85   - default: \
86   - fprintf(stderr, \
87   - "Format %d not yet supported\n", \
88   - format); \
89   - } \
90   -}
91   -
92   -static int get_brightness_adj(unsigned char *image, long size, int *brightness) {
93   - long i, tot = 0;
94   - for (i=0;i<size*3;i++)
95   - tot += image[i];
96   - *brightness = (128 - tot/(size*3))/3;
97   - return !((tot/(size*3)) >= 126 && (tot/(size*3)) <= 130);
98   -}
99   -
100   -int main(int argc, char ** argv)
101   -{
102   - int fd = open(VIDEO_DEV, O_RDONLY), f;
103   - struct video_capability cap;
104   - struct video_window win;
105   - struct video_picture vpic;
106   -
107   - unsigned char *buffer, *src;
108   - int bpp = 24, r = 0, g = 0, b = 0;
109   - unsigned int i, src_depth = 16;
110   -
111   - if (fd < 0) {
112   - perror(VIDEO_DEV);
113   - exit(1);
114   - }
115   -
116   - if (ioctl(fd, VIDIOCGCAP, &cap) < 0) {
117   - perror("VIDIOGCAP");
118   - fprintf(stderr, "(" VIDEO_DEV " not a video4linux device?)\n");
119   - close(fd);
120   - exit(1);
121   - }
122   -
123   - if (ioctl(fd, VIDIOCGWIN, &win) < 0) {
124   - perror("VIDIOCGWIN");
125   - close(fd);
126   - exit(1);
127   - }
128   -
129   - if (ioctl(fd, VIDIOCGPICT, &vpic) < 0) {
130   - perror("VIDIOCGPICT");
131   - close(fd);
132   - exit(1);
133   - }
134   -
135   - if (cap.type & VID_TYPE_MONOCHROME) {
136   - vpic.depth=8;
137   - vpic.palette=VIDEO_PALETTE_GREY; /* 8bit grey */
138   - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
139   - vpic.depth=6;
140   - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
141   - vpic.depth=4;
142   - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
143   - fprintf(stderr, "Unable to find a supported capture format.\n");
144   - close(fd);
145   - exit(1);
146   - }
147   - }
148   - }
149   - } else {
150   - vpic.depth=24;
151   - vpic.palette=VIDEO_PALETTE_RGB24;
152   -
153   - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) {
154   - vpic.palette=VIDEO_PALETTE_RGB565;
155   - vpic.depth=16;
156   -
157   - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
158   - vpic.palette=VIDEO_PALETTE_RGB555;
159   - vpic.depth=15;
160   -
161   - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
162   - fprintf(stderr, "Unable to find a supported capture format.\n");
163   - return -1;
164   - }
165   - }
166   - }
167   - }
168   -
169   - buffer = malloc(win.width * win.height * bpp);
170   - if (!buffer) {
171   - fprintf(stderr, "Out of memory.\n");
172   - exit(1);
173   - }
174   -
175   - do {
176   - int newbright;
177   - read(fd, buffer, win.width * win.height * bpp);
178   - f = get_brightness_adj(buffer, win.width * win.height, &newbright);
179   - if (f) {
180   - vpic.brightness += (newbright << 8);
181   - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) {
182   - perror("VIDIOSPICT");
183   - break;
184   - }
185   - }
186   - } while (f);
187   -
188   - fprintf(stdout, "P6\n%d %d 255\n", win.width, win.height);
189   -
190   - src = buffer;
191   -
192   - for (i = 0; i < win.width * win.height; i++) {
193   - READ_VIDEO_PIXEL(src, vpic.palette, src_depth, r, g, b);
194   - fputc(r>>8, stdout);
195   - fputc(g>>8, stdout);
196   - fputc(b>>8, stdout);
197   - }
198   -
199   - close(fd);
200   - return 0;
201   -}