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/*
v4l-ioctl-test - This small utility sends dumb v4l2 ioctl to a device.
It is meant to check ioctl debug messages generated and to check
if a function is implemented by that device.
flag INTERNAL will send v4l internal messages, defined at v4l2-common.h
and v4l_decoder.h. These messages shouldn't be handled by video
driver itself, but for internal video and/or audio decoders.
Copyright (C) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Internal ioctl doesn't work anymore, due to the changes at
* v4l2-dev.h.
*/
//#define INTERNAL 1 /* meant for testing ioctl debug msgs */
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include "../linux/include/linux/videodev.h"
#ifdef INTERNAL
typedef __u8 u8;
typedef __u32 u32;
#include <linux/version.h>
#include "../linux/include/media/v4l2-common.h"
#include <linux/video_decoder.h>
#else
typedef u_int32_t u32;
#endif
/* All possible parameters used on v4l ioctls */
union v4l_parms {
int i;
unsigned long l;
u32 u_32;
/* V4L1 structs */
struct vbi_format p_vbi_format;
struct video_audio p_video_audio;
struct video_buffer p_video_buffer;
struct video_capability p_video_capability;
struct video_capture p_video_capture;
struct video_channel p_video_channel;
struct video_code p_video_code;
struct video_info p_video_info;
struct video_key p_video_key;
struct video_mbuf p_video_mbuf;
struct video_mmap p_video_mmap;
struct video_picture p_video_picture;
struct video_play_mode p_video_play_mode;
struct video_tuner p_video_tuner;
struct video_unit p_video_unit;
struct video_window p_video_window;
/* V4L2 structs */
struct v4l2_audioout p_v4l2_audioout;
struct v4l2_audio p_v4l2_audio;
struct v4l2_buffer p_v4l2_buffer;
struct v4l2_control p_v4l2_control;
struct v4l2_cropcap p_v4l2_cropcap;
struct v4l2_crop p_v4l2_crop;
struct v4l2_fmtdesc p_v4l2_fmtdesc;
struct v4l2_format p_v4l2_format;
struct v4l2_frequency p_v4l2_frequency;
struct v4l2_input p_v4l2_input;
struct v4l2_modulator p_v4l2_modulator;
struct v4l2_output p_v4l2_output;
struct v4l2_queryctrl p_v4l2_queryctrl;
struct v4l2_querymenu p_v4l2_querymenu;
struct v4l2_requestbuffers p_v4l2_requestbuffers;
struct v4l2_standard p_v4l2_standard;
struct v4l2_streamparm p_v4l2_streamparm;
struct v4l2_tuner p_v4l2_tuner;
#ifdef INTERNAL
/* Decoder structs */
struct video_decoder_capability p_video_decoder_capability;
struct video_decoder_init p_video_decoder_init;
/* Internal V4L2 structs */
struct v4l2_register p_v4l2_register;
struct v4l2_sliced_vbi_data p_v4l2_sliced_vbi_data;
#endif
};
/* All defined ioctls */
int ioctls[] = {
/* V4L ioctls */
VIDIOCCAPTURE,/* int */
VIDIOCGAUDIO,/* struct video_audio */
VIDIOCGCAP,/* struct video_capability */
VIDIOCGCAPTURE,/* struct video_capture */
VIDIOCGCHAN,/* struct video_channel */
VIDIOCGFBUF,/* struct video_buffer */
VIDIOCGFREQ,/* unsigned long */
VIDIOCGMBUF,/* struct video_mbuf */
VIDIOCGPICT,/* struct video_picture */
VIDIOCGPLAYINFO,/* struct video_info */
VIDIOCGTUNER,/* struct video_tuner */
VIDIOCGUNIT,/* struct video_unit */
VIDIOCGVBIFMT,/* struct vbi_format */
VIDIOCGWIN,/* struct video_window */
VIDIOCKEY,/* struct video_key */
VIDIOCMCAPTURE,/* struct video_mmap */
VIDIOCSAUDIO,/* struct video_audio */
VIDIOCSCAPTURE,/* struct video_capture */
VIDIOCSCHAN,/* struct video_channel */
VIDIOCSFBUF,/* struct video_buffer */
VIDIOCSFREQ,/* unsigned long */
VIDIOCSMICROCODE,/* struct video_code */
VIDIOCSPICT,/* struct video_picture */
VIDIOCSPLAYMODE,/* struct video_play_mode */
VIDIOCSTUNER,/* struct video_tuner */
VIDIOCSVBIFMT,/* struct vbi_format */
VIDIOCSWIN,/* struct video_window */
VIDIOCSWRITEMODE,/* int */
VIDIOCSYNC,/* int */
/* V4L2 ioctls */
VIDIOC_CROPCAP,/* struct v4l2_cropcap */
VIDIOC_DQBUF,/* struct v4l2_buffer */
VIDIOC_ENUMAUDIO,/* struct v4l2_audio */
VIDIOC_ENUMAUDOUT,/* struct v4l2_audioout */
VIDIOC_ENUM_FMT,/* struct v4l2_fmtdesc */
VIDIOC_ENUMINPUT,/* struct v4l2_input */
VIDIOC_ENUMOUTPUT,/* struct v4l2_output */
VIDIOC_ENUMSTD,/* struct v4l2_standard */
// VIDIOC_G_AUDIO_OLD,/* struct v4l2_audio */
// VIDIOC_G_AUDOUT_OLD,/* struct v4l2_audioout */
VIDIOC_G_CROP,/* struct v4l2_crop */
VIDIOC_G_CTRL,/* struct v4l2_control */
VIDIOC_G_FMT,/* struct v4l2_format */
VIDIOC_G_FREQUENCY,/* struct v4l2_frequency */
VIDIOC_G_MODULATOR,/* struct v4l2_modulator */
VIDIOC_G_PARM,/* struct v4l2_streamparm */
VIDIOC_G_TUNER,/* struct v4l2_tuner */
// VIDIOC_OVERLAY_OLD,/* int */
VIDIOC_QBUF,/* struct v4l2_buffer */
VIDIOC_QUERYBUF,/* struct v4l2_buffer */
VIDIOC_QUERYCTRL,/* struct v4l2_queryctrl */
VIDIOC_QUERYMENU,/* struct v4l2_querymenu */
VIDIOC_REQBUFS,/* struct v4l2_requestbuffers */
VIDIOC_S_CTRL,/* struct v4l2_control */
VIDIOC_S_FMT,/* struct v4l2_format */
VIDIOC_S_INPUT,/* int */
VIDIOC_S_OUTPUT,/* int */
VIDIOC_S_PARM,/* struct v4l2_streamparm */
VIDIOC_TRY_FMT,/* struct v4l2_format */
#ifdef INTERNAL
/* V4L2 internal ioctls */
AUDC_SET_RADIO,/* no args */
TDA9887_SET_CONFIG,/* int */
TUNER_SET_STANDBY,/* int */
TUNER_SET_TYPE_ADDR,/* int */
VIDIOC_INT_AUDIO_CLOCK_FREQ,/* u32 */
VIDIOC_INT_G_CHIP_IDENT,/* enum v4l2_chip_ident * */
VIDIOC_INT_I2S_CLOCK_FREQ,/* u32 */
VIDIOC_INT_S_REGISTER,/* struct v4l2_register */
VIDIOC_INT_S_VBI_DATA,/* struct v4l2_sliced_vbi_data */
/* Decoder ioctls */
DECODER_ENABLE_OUTPUT,/* int */
DECODER_GET_CAPABILITIES,/* struct video_decoder_capability */
DECODER_GET_STATUS,/* int */
DECODER_INIT,/* struct video_decoder_init */
DECODER_SET_GPIO,/* int */
DECODER_SET_INPUT,/* int */
DECODER_SET_NORM,/* int */
DECODER_SET_OUTPUT,/* int */
DECODER_SET_PICTURE,/* struct video_picture */
DECODER_SET_VBI_BYPASS,/* int */
#endif
};
#define S_IOCTLS sizeof(ioctls)/sizeof(ioctls[0])
/********************************************************************/
int main (void)
{
int fd=0, ret=0,i;
char *device="/dev/video0";
union v4l_parms p;
if ((fd = open(device, O_RDONLY)) < 0) {
perror("Couldn't open video0");
return(-1);
}
for (i=0;i<S_IOCTLS;i++) {
memset(&p,0,sizeof(p));
ret=ioctl(fd,ioctls[i], (void *) &p);
printf("%i: ioctl=0x%08x, return=%d\n",i, ioctls[i], ret);
}
close (fd);
return (0);
}
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