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video2.c
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/*
* video2.c
*
* V4L2 interface with basically JPEG decompression support and even more ...
* Copyright 2006 Krzysztof Blaszkowski ([email protected])
* 2007 Angel Carpintero ([email protected])
* Supported features and TODO
* - preferred palette is JPEG which seems to be very popular for many 640x480 usb cams
* - other supported palettes (NOT TESTED)
* V4L2_PIX_FMT_SBGGR8 (sonix)
* V4L2_PIX_FMT_SN9C10X (sonix)
* V4L2_PIX_FMT_MJPEG, (tested)
* V4L2_PIX_FMT_JPEG, (tested)
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_UYVY, (tested)
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420, (tested)
V4L2_PIX_FMT_YUYV (tested)
* - setting tuner - NOT TESTED
* - access to V4L2 device controls is missing. Partially added but requires some improvements likely.
* - changing resolution at run-time may not work.
* - ucvideo svn r75 or above to work with MJPEG ( i.ex Logitech 5000 pro )
* This work is inspired by fswebcam and current design of motion.
* This interface has been tested with ZC0301 driver from kernel 2.6.17.3 and Labtec's usb camera (PAS202 sensor)
* I'm very pleased by achieved image quality and cpu usage comparing to junky v4l1 spca5xx driver with
* it nonsensical kernel messy jpeg decompressor.
* Default sensor settings used by ZC0301 driver are very reasonable choosen.
* apparently brigthness should be controlled automatically by motion still for light compensation.
* it can be done by adjusting ADC gain and also exposure time.
*
* 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.
let's go :)
*/
#ifndef WITHOUT_V4L
#ifdef MOTION_V4L2
#include "global.h"
//#include "motion.h"
//#include "netcam.h"
//#include "video.h"
#ifdef MOTION_V4L2_OLD
// Seems that is needed for some system
#include <linux/time.h>
#include <linux/videodev2.h>
#endif
#include <linux/videodev2.h>
#include <sys/mman.h>
#include <linux/v4l2-controls.h>
#include <stdint.h>
#include <signal.h>
#include <assert.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <pthread.h>
#include <unistd.h>
#define u8 unsigned char
#define u16 unsigned short
#define u32 unsigned int
#define s32 signed int
#define MMAP_BUFFERS 4
#define MIN_MMAP_BUFFERS 2
#ifndef V4L2_PIX_FMT_SBGGR8
/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B','A','8','1') /* 8 BGBG.. GRGR.. */
#endif
#ifndef V4L2_PIX_FMT_MJPEG
#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M','J','P','G') /* Motion-JPEG */
#endif
#ifndef V4L2_PIX_FMT_SN9C10X
#define V4L2_PIX_FMT_SN9C10X v4l2_fourcc('S','9','1','0') /* SN9C10x compression */
#endif
#define ZC301_V4L2_CID_DAC_MAGN V4L2_CID_PRIVATE_BASE
#define ZC301_V4L2_CID_GREEN_BALANCE (V4L2_CID_PRIVATE_BASE+1)
static const u32 queried_ctrls[] = {
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_RED_BALANCE,
V4L2_CID_BLUE_BALANCE,
V4L2_CID_GAMMA,
V4L2_CID_EXPOSURE,
V4L2_CID_AUTOGAIN,
V4L2_CID_GAIN,
ZC301_V4L2_CID_DAC_MAGN,
ZC301_V4L2_CID_GREEN_BALANCE,
0
};
typedef struct netcam_image_buff {
char *ptr;
int content_length;
size_t size; /* total allocated size */
size_t used; /* bytes already used */
struct timeval image_time; /* time this image was received */
} netcam_buff;
typedef netcam_buff *netcam_buff_ptr;
typedef struct {
int fd;
char map;
u32 fps;
struct v4l2_capability cap;
struct v4l2_format fmt;
struct v4l2_requestbuffers req;
struct v4l2_buffer buf;
netcam_buff *buffers;
s32 pframe;
u32 ctrl_flags;
struct v4l2_queryctrl *controls;
} src_v4l2_t;
static int xioctl(int fd, int request, void *arg)
{
int r;
do
r = ioctl(fd, request, arg);
while (-1 == r && EINTR == errno);
return r;
}
static int v4l2_get_capability(src_v4l2_t * s)
{
if (xioctl(s->fd, VIDIOC_QUERYCAP, &s->cap) < 0) {
motion_log(LOG_ERR, 0, "Not a V4L2 device?");
return -1;
}
motion_log(LOG_INFO, 0, "cap.driver: \"%s\"", s->cap.driver);
motion_log(LOG_INFO, 0, "cap.card: \"%s\"", s->cap.card);
motion_log(LOG_INFO, 0, "cap.bus_info: \"%s\"", s->cap.bus_info);
motion_log(LOG_INFO, 0, "cap.capabilities=0x%08X", s->cap.capabilities);
if (s->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)
motion_log(LOG_INFO, 0, "- VIDEO_CAPTURE");
if (s->cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)
motion_log(LOG_INFO, 0, "- VIDEO_OUTPUT");
if (s->cap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
motion_log(LOG_INFO, 0, "- VIDEO_OVERLAY");
if (s->cap.capabilities & V4L2_CAP_VBI_CAPTURE)
motion_log(LOG_INFO, 0, "- VBI_CAPTURE");
if (s->cap.capabilities & V4L2_CAP_VBI_OUTPUT)
motion_log(LOG_INFO, 0, "- VBI_OUTPUT");
if (s->cap.capabilities & V4L2_CAP_RDS_CAPTURE)
motion_log(LOG_INFO, 0, "- RDS_CAPTURE");
if (s->cap.capabilities & V4L2_CAP_TUNER)
motion_log(LOG_INFO, 0, "- TUNER");
if (s->cap.capabilities & V4L2_CAP_AUDIO)
motion_log(LOG_INFO, 0, "- AUDIO");
if (s->cap.capabilities & V4L2_CAP_READWRITE)
motion_log(LOG_INFO, 0, "- READWRITE");
if (s->cap.capabilities & V4L2_CAP_ASYNCIO)
motion_log(LOG_INFO, 0, "- ASYNCIO");
if (s->cap.capabilities & V4L2_CAP_STREAMING)
motion_log(LOG_INFO, 0, "- STREAMING");
if (s->cap.capabilities & V4L2_CAP_TIMEPERFRAME)
motion_log(LOG_INFO, 0, "- TIMEPERFRAME");
if (!(s->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
motion_log(LOG_ERR, 0, "Device does not support capturing.");
return -1;
}
return 0;
}
static int v4l2_select_input(src_v4l2_t * s, int in, int norm, unsigned long freq_, int tuner_number ATTRIBUTE_UNUSED)
{
struct v4l2_input input;
struct v4l2_standard standard;
v4l2_std_id std_id;
if (in == 8)
in = 0;
/* Set the input. */
memset (&input, 0, sizeof (input));
input.index = in;
if (xioctl(s->fd, VIDIOC_ENUMINPUT, &input) == -1) {
motion_log(LOG_ERR, 1, "Unable to query input %d VIDIOC_ENUMINPUT", in);
return -1;
}
if (debug_level > CAMERA_VIDEO)
motion_log(LOG_INFO, 0, "%s: name = \"%s\", type 0x%08X, status %08x", __FUNCTION__, input.name,
input.type, input.status);
if ((input.type & V4L2_INPUT_TYPE_TUNER) && (debug_level > CAMERA_VIDEO))
motion_log(LOG_INFO, 0, "- TUNER");
if ((input.type & V4L2_INPUT_TYPE_CAMERA) && (debug_level > CAMERA_VIDEO))
motion_log(LOG_INFO, 0, "- CAMERA");
if (xioctl(s->fd, VIDIOC_S_INPUT, &in) == -1) {
motion_log(LOG_ERR, 1, "Error selecting input %d VIDIOC_S_INPUT", in);
return -1;
}
/* Set video standard usually webcams doesn't support the ioctl or return V4L2_STD_UNKNOWN */
if (xioctl(s->fd, VIDIOC_G_STD, &std_id) == -1) {
if (debug_level > CAMERA_VIDEO)
motion_log(LOG_INFO, 0, "Device doesn't support VIDIOC_G_STD");
std_id = 0; // V4L2_STD_UNKNOWN = 0
}
if (std_id) {
memset(&standard, 0, sizeof(standard));
standard.index = 0;
while (xioctl(s->fd, VIDIOC_ENUMSTD, &standard) == 0) {
if ((standard.id & std_id) && (debug_level > CAMERA_VIDEO))
motion_log(LOG_INFO, 0, "- video standard %s", standard.name);
standard.index++;
}
switch (norm) {
case 1:
std_id = V4L2_STD_NTSC;
break;
case 2:
std_id = V4L2_STD_SECAM;
break;
default:
std_id = V4L2_STD_PAL;
}
if (xioctl(s->fd, VIDIOC_S_STD, &std_id) == -1)
motion_log(LOG_ERR, 1, "Error selecting standard method %d VIDIOC_S_STD", std_id);
}
/* If this input is attached to a tuner, set the frequency. */
if (input.type & V4L2_INPUT_TYPE_TUNER) {
struct v4l2_tuner tuner;
struct v4l2_frequency freq;
/* Query the tuners capabilities. */
memset(&tuner, 0, sizeof(struct v4l2_tuner));
tuner.index = input.tuner;
if (xioctl(s->fd, VIDIOC_G_TUNER, &tuner) == -1) {
motion_log(LOG_ERR, 1, "tuner %d VIDIOC_G_TUNER", tuner.index);
return 0;
}
/* Set the frequency. */
memset(&freq, 0, sizeof(struct v4l2_frequency));
freq.tuner = input.tuner;
freq.type = V4L2_TUNER_ANALOG_TV;
freq.frequency = (freq_ / 1000) * 16;
if (xioctl(s->fd, VIDIOC_S_FREQUENCY, &freq) == -1) {
motion_log(LOG_ERR, 1, "freq %lu VIDIOC_S_FREQUENCY", freq.frequency);
return 0;
}
}
return 0;
}
/* *
* v4l2_do_set_pix_format
*
* This routine does the actual request to the driver
*
* Returns: 0 Ok
* -1 Problems setting palette or not supported
*
* Our algorithm for setting the picture format for the data which the
* driver returns to us will be as follows:
*
* First, we request that the format be set to whatever is in the config
* file (which is either the motion default, or a value chosen by the user).
* If that request is successful, we are finished.
*
* If the driver responds that our request is not accepted, we then enumerate
* the formats which the driver claims to be able to supply. From this list,
* we choose whichever format is "most efficient" for motion. The enumerated
* list is also printed to the motion log so that the user can consider
* choosing a different value for the config file.
*
* We then request the driver to set the format we have chosen. That request
* should never fail, so if it does we log the fact and give up.
*/
static int v4l2_do_set_pix_format(u32 pixformat, src_v4l2_t * s,
int *width, int *height)
{
memset(&s->fmt, 0, sizeof(struct v4l2_format));
s->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
s->fmt.fmt.pix.width = *width;
s->fmt.fmt.pix.height = *height;
s->fmt.fmt.pix.pixelformat = pixformat;
s->fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (xioctl(s->fd, VIDIOC_TRY_FMT, &s->fmt) != -1 &&
s->fmt.fmt.pix.pixelformat == pixformat) {
motion_log(LOG_INFO, 0, "Test palette %c%c%c%c (%dx%d)",
pixformat >> 0, pixformat >> 8, pixformat >> 16,
pixformat >> 24, *width, *height);
if (s->fmt.fmt.pix.width != (unsigned int) *width ||
s->fmt.fmt.pix.height != (unsigned int) *height) {
motion_log(LOG_INFO, 0, "Adjusting resolution from %ix%i to %ix%i.",
*width, *height, s->fmt.fmt.pix.width,
s->fmt.fmt.pix.height);
*width = s->fmt.fmt.pix.width;
*height = s->fmt.fmt.pix.height;
}
if (xioctl(s->fd, VIDIOC_S_FMT, &s->fmt) == -1) {
motion_log(LOG_ERR, 1, "Error setting pixel format VIDIOC_S_FMT");
return -1;
}
motion_log(LOG_INFO, 0, "Using palette %c%c%c%c (%dx%d) bytesperlines "
"%d sizeimage %d colorspace %08x", pixformat >> 0,
pixformat >> 8, pixformat >> 16, pixformat >> 24,
*width, *height, s->fmt.fmt.pix.bytesperline,
s->fmt.fmt.pix.sizeimage, s->fmt.fmt.pix.colorspace);
return 0;
}
return -1;
}
/* This routine is called by the startup code to do the format setting */
static int v4l2_set_pix_format(struct context *cnt, src_v4l2_t * s,
int *width, int *height)
{
struct v4l2_fmtdesc fmt;
short int v4l2_pal;
/*
* Note that this array MUST exactly match the config file list.
* A higher index means better chance to be used
*/
static const u32 supported_formats[] = {
V4L2_PIX_FMT_SN9C10X,
V4L2_PIX_FMT_SBGGR8,
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_JPEG,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420 /* most efficient for motion */
};
int array_size = sizeof(supported_formats) / sizeof(supported_formats[0]);
short int index_format = -1; /* -1 says not yet chosen */
/* First we try a shortcut of just setting the config file value */
if (cnt->conf.v4l2_palette >= 0) {
char name[5] = {supported_formats[cnt->conf.v4l2_palette] >> 0,
supported_formats[cnt->conf.v4l2_palette] >> 8,
supported_formats[cnt->conf.v4l2_palette] >> 16,
supported_formats[cnt->conf.v4l2_palette] >> 24, 0};
if (v4l2_do_set_pix_format(supported_formats[cnt->conf.v4l2_palette],
s, width, height) >= 0)
return 0;
motion_log(LOG_INFO, 0, "Config palette index %d (%s) doesn't work.",
cnt->conf.v4l2_palette, name);
}
/* Well, that didn't work, so we enumerate what the driver can offer */
memset(&fmt, 0, sizeof(struct v4l2_fmtdesc));
fmt.index = v4l2_pal = 0;
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
motion_log(LOG_INFO, 0, "Supported palettes:");
while (xioctl(s->fd, VIDIOC_ENUM_FMT, &fmt) != -1) {
short int i;
motion_log(LOG_INFO, 0, "%i: %c%c%c%c (%s)", v4l2_pal,
fmt.pixelformat >> 0, fmt.pixelformat >> 8,
fmt.pixelformat >> 16, fmt.pixelformat >> 24,
fmt.description);
/* adjust index_format if larger value found */
for (i = index_format + 1; i < array_size; i++)
if (supported_formats[i] == fmt.pixelformat)
index_format = i;
memset(&fmt, 0, sizeof(struct v4l2_fmtdesc));
fmt.index = ++v4l2_pal;
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
if (index_format >= 0) {
char name[5] = {supported_formats[index_format] >> 0,
supported_formats[index_format] >> 8,
supported_formats[index_format] >> 16,
supported_formats[index_format] >> 24, 0};
motion_log(LOG_INFO, 0, "Selected palette %s", name);
if (v4l2_do_set_pix_format(supported_formats[index_format],
s, width, height) >= 0)
return 0;
motion_log(LOG_ERR, 1, "VIDIOC_TRY_FMT failed for format %s", name);
}
motion_log(LOG_ERR, 0, "Unable to find a compatible palette format.");
return -1;
}
#if 0
static void v4l2_set_fps(src_v4l2_t * s){
struct v4l2_streamparm* setfps;
setfps=(struct v4l2_streamparm *) calloc(1, sizeof(struct v4l2_streamparm));
memset(setfps, 0, sizeof(struct v4l2_streamparm));
setfps->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
setfps->parm.capture.timeperframe.numerator=1;
setfps->parm.capture.timeperframe.denominator=s->fps;
if (xioctl(s->fd, VIDIOC_S_PARM, setfps) == -1)
motion_log(LOG_ERR, 1, "v4l2_set_fps VIDIOC_S_PARM");
}
#endif
static int v4l2_set_mmap(src_v4l2_t * s)
{
enum v4l2_buf_type type;
u32 b;
/* Does the device support streaming? */
if (!(s->cap.capabilities & V4L2_CAP_STREAMING))
return -1;
memset(&s->req, 0, sizeof(struct v4l2_requestbuffers));
s->req.count = MMAP_BUFFERS;
s->req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
s->req.memory = V4L2_MEMORY_MMAP;
if (xioctl(s->fd, VIDIOC_REQBUFS, &s->req) == -1) {
motion_log(LOG_ERR, 1, "Error requesting buffers %d for memory map. VIDIOC_REQBUFS", s->req.count);
return -1;
}
motion_log(LOG_DEBUG, 0, "mmap information:");
motion_log(LOG_DEBUG, 0, "frames=%d", s->req.count);
if (s->req.count < MIN_MMAP_BUFFERS) {
motion_log(LOG_ERR, 0, "Insufficient buffer memory.");
return -1;
}
s->buffers = (netcam_buff*)calloc(s->req.count, sizeof(netcam_buff));
if (!s->buffers) {
motion_log(LOG_ERR, 1, "%s: Out of memory.", __FUNCTION__);
return -1;
}
for (b = 0; b < s->req.count; b++) {
struct v4l2_buffer buf;
memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = b;
if (xioctl(s->fd, VIDIOC_QUERYBUF, &buf) == -1) {
motion_log(LOG_ERR, 0, "Error querying buffer %d VIDIOC_QUERYBUF", b);
free(s->buffers);
return -1;
}
s->buffers[b].size = buf.length;
s->buffers[b].ptr = (char*)mmap(NULL, buf.length, PROT_READ | PROT_WRITE, MAP_SHARED, s->fd, buf.m.offset);
if (s->buffers[b].ptr == MAP_FAILED) {
motion_log(LOG_ERR, 1, "Error mapping buffer %i mmap", b);
free(s->buffers);
return -1;
}
motion_log(LOG_DEBUG, 0, "%i length=%d", b, buf.length);
}
s->map = -1;
for (b = 0; b < s->req.count; b++) {
memset(&s->buf, 0, sizeof(struct v4l2_buffer));
s->buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
s->buf.memory = V4L2_MEMORY_MMAP;
s->buf.index = b;
if (xioctl(s->fd, VIDIOC_QBUF, &s->buf) == -1) {
motion_log(LOG_ERR, 1, "buffer index %d VIDIOC_QBUF", s->buf.index);
return -1;
}
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (xioctl(s->fd, VIDIOC_STREAMON, &type) == -1) {
motion_log(LOG_ERR, 1, "Error starting stream VIDIOC_STREAMON");
return -1;
}
return 0;
}
static int v4l2_scan_controls(src_v4l2_t * s)
{
int count, i;
struct v4l2_queryctrl queryctrl;
memset(&queryctrl, 0, sizeof(struct v4l2_queryctrl));
for (i = 0, count = 0; queried_ctrls[i]; i++) {
queryctrl.id = queried_ctrls[i];
if (xioctl(s->fd, VIDIOC_QUERYCTRL, &queryctrl))
continue;
count++;
s->ctrl_flags |= 1 << i;
}
if (count) {
struct v4l2_queryctrl *ctrl = s->controls = (struct v4l2_queryctrl*)calloc(count, sizeof(struct v4l2_queryctrl));
if (!ctrl) {
motion_log(LOG_ERR, 1, "%s: Insufficient buffer memory.", __FUNCTION__);
return -1;
}
for (i = 0; queried_ctrls[i]; i++) {
if (s->ctrl_flags & (1 << i)) {
struct v4l2_control control;
queryctrl.id = queried_ctrls[i];
if (xioctl(s->fd, VIDIOC_QUERYCTRL, &queryctrl))
continue;
memcpy(ctrl, &queryctrl, sizeof(struct v4l2_queryctrl));
motion_log(LOG_INFO, 0, "found control 0x%08x, \"%s\", range %d,%d %s", ctrl->id,
ctrl->name, ctrl->minimum, ctrl->maximum,
ctrl->flags & V4L2_CTRL_FLAG_DISABLED ? "!DISABLED!" : "");
memset (&control, 0, sizeof (control));
control.id = queried_ctrls[i];
xioctl(s->fd, VIDIOC_G_CTRL, &control);
motion_log(LOG_INFO, 0, "\t\"%s\", default %d, current %d", ctrl->name,
ctrl->default_value, control.value);
ctrl++;
}
}
}
return 0;
}
static int v4l2_set_control(src_v4l2_t * s, u32 cid, int value)
{
int i, count;
if (!s->controls)
return -1;
for (i = 0, count = 0; queried_ctrls[i]; i++) {
if (s->ctrl_flags & (1 << i)) {
if (cid == queried_ctrls[i]) {
struct v4l2_queryctrl *ctrl = s->controls + count;
struct v4l2_control control;
int ret;
memset (&control, 0, sizeof (control));
control.id = queried_ctrls[i];
switch (ctrl->type) {
case V4L2_CTRL_TYPE_INTEGER:
value = control.value =
(value * (ctrl->maximum - ctrl->minimum) / 256) + ctrl->minimum;
ret = xioctl(s->fd, VIDIOC_S_CTRL, &control);
break;
case V4L2_CTRL_TYPE_BOOLEAN:
value = control.value = value ? 1 : 0;
ret = xioctl(s->fd, VIDIOC_S_CTRL, &control);
break;
default:
motion_log(LOG_ERR, 0, "%s: control type not supported yet");
return -1;
}
if (debug_level > CAMERA_VIDEO)
motion_log(LOG_INFO, 0, "setting control \"%s\" to %d (ret %d %s) %s", ctrl->name,
value, ret, ret ? strerror(errno) : "",
ctrl->flags & V4L2_CTRL_FLAG_DISABLED ? "Control is DISABLED!" : "");
return 0;
}
count++;
}
}
return -1;
}
#define VIDEO_DEVICE "/dev/video0"
#define V4L_GENERAL_ERROR 0x01 /* binary 000001 */
#define V4L_BTTVLOST_ERROR 0x05 /* binary 000101 */
#define V4L_FATAL_ERROR -1
static struct video_dev *viddevs = NULL;
static pthread_mutex_t vid_mutex;
/**
* vid_init
*
* Called from motion.c at the very beginning before setting up the threads.
* Function prepares the vid_mutex
*/
void vid_init(void)
{
pthread_mutex_init(&vid_mutex, NULL);
}
/**
* vid_cleanup
*
* vid_cleanup is called from motion.c when Motion is stopped or restarted
*/
void vid_cleanup(void)
{
pthread_mutex_destroy(&vid_mutex);
}
static void v4l2_picture_controls(struct context *cnt, struct video_dev *viddev)
{
src_v4l2_t *s = (src_v4l2_t *) viddev->v4l2_private;
if (cnt->conf.contrast && cnt->conf.contrast != viddev->contrast) {
viddev->contrast = cnt->conf.contrast;
v4l2_set_control(s, V4L2_CID_CONTRAST, viddev->contrast);
}
if (cnt->conf.saturation && cnt->conf.saturation != viddev->saturation) {
viddev->saturation = cnt->conf.saturation;
v4l2_set_control(s, V4L2_CID_SATURATION, viddev->saturation);
}
if (cnt->conf.hue && cnt->conf.hue != viddev->hue) {
viddev->hue = cnt->conf.hue;
v4l2_set_control(s, V4L2_CID_HUE, viddev->hue);
}
if (cnt->conf.autobright) {
assert(0); //not using this feature
/* if (vid_do_autobright(cnt, viddev)) {
if (v4l2_set_control(s, V4L2_CID_BRIGHTNESS, viddev->brightness))
v4l2_set_control(s, V4L2_CID_GAIN, viddev->brightness);
}*/
} else {
if (cnt->conf.brightness && cnt->conf.brightness != viddev->brightness) {
viddev->brightness = cnt->conf.brightness;
if (v4l2_set_control(s, V4L2_CID_BRIGHTNESS, viddev->brightness))
v4l2_set_control(s, V4L2_CID_GAIN, viddev->brightness);
}
}
}
/* public functions */
unsigned char *v4l2_start(struct context *cnt, struct video_dev *viddev, int width, int height,
int input, int norm, unsigned long freq, int tuner_number)
{
src_v4l2_t *s;
/* Allocate memory for the state structure. */
if (!(s = (src_v4l2_t*)calloc(sizeof(src_v4l2_t), 1))) {
motion_log(LOG_ERR, 1, "%s: Out of memory.", __FUNCTION__);
goto err;
}
viddev->v4l2_private = s;
s->fd = viddev->fd;
s->fps = cnt->conf.frame_limit;
s->pframe = -1;
if (v4l2_get_capability(s))
goto err;
if (v4l2_select_input(s, input, norm, freq, tuner_number))
goto err;
if (v4l2_set_pix_format(cnt ,s, &width, &height))
goto err;
if (v4l2_scan_controls(s))
goto err;
#if 0
v4l2_set_fps(s);
#endif
if (v4l2_set_mmap(s))
goto err;
viddev->size_map = 0;
viddev->v4l_buffers[0] = NULL;
viddev->v4l_maxbuffer = 1;
viddev->v4l_curbuffer = 0;
viddev->v4l_fmt = VIDEO_PALETTE_YUV420P;
viddev->v4l_bufsize = (width * height * 3) / 2;
/* Update width and height with supported values from camera driver */
viddev->width = width;
viddev->height = height;
return (unsigned char *) 1;
err:
if (s)
free(s);
viddev->v4l2_private = NULL;
viddev->v4l2 = 0;
return NULL;
}
void v4l2_set_input(struct context *cnt, struct video_dev *viddev, unsigned char *map, int width, int height,
struct config *conf)
{
int i;
int input = conf->input;
int norm = conf->norm;
int skip = conf->roundrobin_skip;
unsigned long freq = conf->frequency;
int tuner_number = conf->tuner_number;
if (input != viddev->input || width != viddev->width || height != viddev->height ||
freq != viddev->freq || tuner_number != viddev->tuner_number) {
struct timeval switchTime;
v4l2_select_input((src_v4l2_t *) viddev->v4l2_private, input, norm, freq, tuner_number);
gettimeofday(&switchTime, NULL);
v4l2_picture_controls(cnt, viddev);
viddev->input = input;
viddev->width = width;
viddev->height = height;
viddev->freq = freq;
viddev->tuner_number = tuner_number;
/* Skip all frames captured before switchtime, capture 1 after switchtime */
{
src_v4l2_t *s = (src_v4l2_t *) viddev->v4l2_private;
unsigned int counter = 0;
if (debug_level > CAMERA_VIDEO)
motion_log(LOG_DEBUG, 0, "set_input_skip_frame switch_time=%ld:%ld",
switchTime.tv_sec, switchTime.tv_usec);
/* Avoid hang using the number of mmap buffers */
while(counter < s->req.count) {
counter++;
if (v4l2_next(cnt, viddev, map, width, height))
break;
if (s->buf.timestamp.tv_sec > switchTime.tv_sec ||
(s->buf.timestamp.tv_sec == switchTime.tv_sec && s->buf.timestamp.tv_usec >
switchTime.tv_usec))
break;
if (debug_level > CAMERA_VIDEO)
motion_log(LOG_DEBUG, 0, "got frame before switch timestamp=%ld:%ld",
s->buf.timestamp.tv_sec, s->buf.timestamp.tv_usec);
}
}
/* skip a few frames if needed */
for (i = 1; i < skip; i++)
v4l2_next(cnt, viddev, map, width, height);
} else {
/* No round robin - we only adjust picture controls */
v4l2_picture_controls(cnt, viddev);
}
}
void conv_rgb24toyuv420p(unsigned char *map, unsigned char *cap_map, int width, int height)
{
unsigned char *y, *u, *v;
unsigned char *r, *g, *b;
int i, loop;
b = cap_map;
g = b + 1;
r = g + 1;
y = map;
u = y + width * height;
v = u + (width * height) / 4;
memset(u, 0, width * height / 4);
memset(v, 0, width * height / 4);
for (loop = 0; loop < height; loop++) {
for (i = 0; i < width; i += 2) {
*y++ = (9796 ** r + 19235 ** g + 3736 ** b) >> 15;
*u += ((-4784 ** r - 9437 ** g + 14221 ** b) >> 17) + 32;
*v += ((20218 ** r - 16941 ** g - 3277 ** b) >> 17) + 32;
r += 3;
g += 3;
b += 3;
*y++ = (9796 ** r + 19235 ** g + 3736 ** b) >> 15;
*u += ((-4784 ** r - 9437 ** g + 14221 ** b) >> 17) + 32;
*v += ((20218 ** r - 16941 ** g - 3277 ** b) >> 17) + 32;
r += 3;
g += 3;
b += 3;
u++;
v++;
}
if ((loop & 1) == 0) {
u -= width / 2;
v -= width / 2;
}
}
}
void conv_uyvyto420p(unsigned char *map, unsigned char *cap_map, unsigned int width, unsigned int height)
{
uint8_t *pY = map;
uint8_t *pU = pY + (width * height);
uint8_t *pV = pU + (width * height) / 4;
uint32_t uv_offset = width * 2 * sizeof(uint8_t);
uint32_t ix, jx;
for (ix = 0; ix < height; ix++) {
for (jx = 0; jx < width; jx += 2) {
uint16_t calc;
if ((ix&1) == 0) {
calc = *cap_map;
calc += *(cap_map + uv_offset);
calc /= 2;
*pU++ = (uint8_t) calc;
}
cap_map++;
*pY++ = *cap_map++;
if ((ix&1) == 0) {
calc = *cap_map;
calc += *(cap_map + uv_offset);
calc /= 2;
*pV++ = (uint8_t) calc;
}
cap_map++;
*pY++ = *cap_map++;
}
}
}
void conv_yuv422to420p(unsigned char *map, unsigned char *cap_map, int width, int height)
{
unsigned char *src, *dest, *src2, *dest2;
int i, j;
/* Create the Y plane */
src = cap_map;
dest = map;
for (i = width * height; i > 0; i--) {
*dest++ = *src;
src += 2;
}
/* Create U and V planes */
src = cap_map + 1;
src2 = cap_map + width * 2 + 1;
dest = map + width * height;
dest2 = dest + (width * height) / 4;
for (i = height / 2; i > 0; i--) {
for (j = width / 2; j > 0; j--) {
*dest = ((int) *src + (int) *src2) / 2;
src += 2;
src2 += 2;
dest++;
*dest2 = ((int) *src + (int) *src2) / 2;
src += 2;
src2 += 2;
dest2++;
}
src += width * 2;
src2 += width * 2;
}
}
void bayer2rgb24(unsigned char *dst, unsigned char *src, long int width, long int height)
{
long int i;
unsigned char *rawpt, *scanpt;
long int size;
rawpt = src;
scanpt = dst;
size = width * height;
for (i = 0; i < size; i++) {
if (((i / width) & 1) == 0) { // %2 changed to & 1
if ((i & 1) == 0) {
/* B */
if ((i > width) && ((i % width) > 0)) {
*scanpt++ = *rawpt; /* B */
*scanpt++ = (*(rawpt - 1) + *(rawpt + 1) +
*(rawpt + width) + *(rawpt - width)) / 4; /* G */
*scanpt++ = (*(rawpt - width - 1) + *(rawpt - width + 1) +
*(rawpt + width - 1) + *(rawpt + width + 1)) / 4; /* R */
} else {
/* first line or left column */
*scanpt++ = *rawpt; /* B */
*scanpt++ = (*(rawpt + 1) + *(rawpt + width)) / 2; /* G */
*scanpt++ = *(rawpt + width + 1); /* R */
}
} else {
/* (B)G */
if ((i > width) && ((i % width) < (width - 1))) {
*scanpt++ = (*(rawpt - 1) + *(rawpt + 1)) / 2; /* B */
*scanpt++ = *rawpt; /* G */
*scanpt++ = (*(rawpt + width) + *(rawpt - width)) / 2; /* R */
} else {
/* first line or right column */
*scanpt++ = *(rawpt - 1); /* B */
*scanpt++ = *rawpt; /* G */
*scanpt++ = *(rawpt + width); /* R */
}
}
} else {
if ((i & 1) == 0) {
/* G(R) */
if ((i < (width * (height - 1))) && ((i % width) > 0)) {
*scanpt++ = (*(rawpt + width) + *(rawpt - width)) / 2; /* B */
*scanpt++ = *rawpt; /* G */
*scanpt++ = (*(rawpt - 1) + *(rawpt + 1)) / 2; /* R */
} else {
/* bottom line or left column */