frodovdr
/
vdr
mirror of https://github.com/VDR4Arch/vdr.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Changed cDvbDevice::GrabImage() to use V4L2 (backport from version 1.7.3)

This commit is contained in:
Klaus Schmidinger 2012-02-14 13:41:52 +01:00
parent 1857a0ca20
commit 17485ccc96
5 changed files with 103 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CONTRIBUTORS
View File

@ -2363,3 +2363,7 @@ Edgar Toernig <froese@gmx.de>
Winfried Köhler <w_koehl@gmx.de>
for fixing wrong value for TableIdBAT in libsi/si.h
Ralf Schueler <dl4mw@schueler.ws>
for backporting "Changed cDvbDevice::GrabImage() to use V4L" from version 1.7.3
to 1.6.0-3

5
HISTORY
View File

@ -5758,3 +5758,8 @@ Video Disk Recorder Revision History
- Fixed wrong value for TableIdBAT in libsi/si.h (thanks to Winfried Köhler).
- Removed unneeded include files <linux/dvb/dmx.h> und <time.h> from remux.h
(reported by Tobias Grimm).
2012-02-14: Version 1.6.0-3
- Changed cDvbDevice::GrabImage() to use V4L2
(backport from version 1.7.3, thanks to Ralf Schueler).

4
config.h
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: config.h 1.310.1.2 2008/09/06 14:30:00 kls Exp $
* $Id: config.h 1.310.1.3 2012/02/14 12:16:31 kls Exp $
*/
#ifndef __CONFIG_H
@ -22,7 +22,7 @@
// VDR's own version number:
#define VDRVERSION "1.6.0-2"
#define VDRVERSION "1.6.0-3"
#define VDRVERSNUM 10600 // Version * 10000 + Major * 100 + Minor
// The plugin API's version number:

144
dvbdevice.c
View File

@ -4,13 +4,13 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 1.170 2008/02/09 16:11:44 kls Exp $
* $Id: dvbdevice.c 1.170.1.1 2012/02/14 12:36:30 kls Exp $
*/
#include "dvbdevice.h"
#include <errno.h>
#include <limits.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <linux/dvb/audio.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
@ -521,69 +521,103 @@ uchar *cDvbDevice::GrabImage(int &Size, bool Jpeg, int Quality, int SizeX, int S
int videoDev = open(buffer, O_RDWR);
if (videoDev >= 0) {
uchar *result = NULL;
struct video_mbuf mbuf;
if (ioctl(videoDev, VIDIOCGMBUF, &mbuf) == 0) {
int msize = mbuf.size;
unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
if (mem && mem != (unsigned char *)-1) {
// set up the size and RGB
struct video_capability vc;
if (ioctl(videoDev, VIDIOCGCAP, &vc) == 0) {
struct video_mmap vm;
vm.frame = 0;
if ((SizeX > 0) && (SizeX <= vc.maxwidth) &&
(SizeY > 0) && (SizeY <= vc.maxheight)) {
vm.width = SizeX;
vm.height = SizeY;
}
else {
vm.width = vc.maxwidth;
vm.height = vc.maxheight;
}
vm.format = VIDEO_PALETTE_RGB24;
if (ioctl(videoDev, VIDIOCMCAPTURE, &vm) == 0 && ioctl(videoDev, VIDIOCSYNC, &vm.frame) == 0) {
// make RGB out of BGR:
int memsize = vm.width * vm.height;
unsigned char *mem1 = mem;
for (int i = 0; i < memsize; i++) {
unsigned char tmp = mem1[2];
mem1[2] = mem1[0];
mem1[0] = tmp;
mem1 += 3;
}
// set up the size and RGB
v4l2_format fmt;
memset(&fmt, 0, sizeof(fmt));
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = SizeX;
fmt.fmt.pix.height = SizeY;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_BGR24;
fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (ioctl(videoDev, VIDIOC_S_FMT, &fmt) == 0) {
v4l2_requestbuffers reqBuf;
memset(&reqBuf, 0, sizeof(reqBuf));
reqBuf.count = 2;
reqBuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
reqBuf.memory = V4L2_MEMORY_MMAP;
if (ioctl(videoDev, VIDIOC_REQBUFS, &reqBuf) >= 0) {
v4l2_buffer mbuf;
memset(&mbuf, 0, sizeof(mbuf));
mbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
mbuf.memory = V4L2_MEMORY_MMAP;
if (ioctl(videoDev, VIDIOC_QUERYBUF, &mbuf) == 0) {
int msize = mbuf.length;
unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
if (mem && mem != (unsigned char *)-1) {
v4l2_buffer buf;
memset(&buf, 0, sizeof(buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = 0;
if (ioctl(videoDev, VIDIOC_QBUF, &buf) == 0) {
v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl (videoDev, VIDIOC_STREAMON, &type) == 0) {
memset(&buf, 0, sizeof(buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = 0;
if (ioctl(videoDev, VIDIOC_DQBUF, &buf) == 0) {
if (ioctl(videoDev, VIDIOC_STREAMOFF, &type) == 0) {
// make RGB out of BGR:
int memsize = fmt.fmt.pix.width * fmt.fmt.pix.height;
unsigned char *mem1 = mem;
for (int i = 0; i < memsize; i++) {
unsigned char tmp = mem1[2];
mem1[2] = mem1[0];
mem1[0] = tmp;
mem1 += 3;
}
if (Quality < 0)
Quality = 100;
if (Quality < 0)
Quality = 100;
dsyslog("grabbing to %s %d %d %d", Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
if (Jpeg) {
// convert to JPEG:
result = RgbToJpeg(mem, vm.width, vm.height, Size, Quality);
if (!result)
esyslog("ERROR: failed to convert image to JPEG");
}
else {
// convert to PNM:
char buf[32];
snprintf(buf, sizeof(buf), "P6\n%d\n%d\n255\n", vm.width, vm.height);
int l = strlen(buf);
int bytes = memsize * 3;
Size = l + bytes;
result = MALLOC(uchar, Size);
if (result) {
memcpy(result, buf, l);
memcpy(result + l, mem, bytes);
dsyslog("grabbing to %s %d %d %d", Jpeg ? "JPEG" : "PNM", Quality, fmt.fmt.pix.width, fmt.fmt.pix.height);
if (Jpeg) {
// convert to JPEG:
result = RgbToJpeg(mem, fmt.fmt.pix.width, fmt.fmt.pix.height, Size, Quality);
if (!result)
esyslog("ERROR: failed to convert image to JPEG");
}
else {
// convert to PNM:
char buf[32];
snprintf(buf, sizeof(buf), "P6\n%d\n%d\n255\n", fmt.fmt.pix.width, fmt.fmt.pix.height);
int l = strlen(buf);
int bytes = memsize * 3;
Size = l + bytes;
result = MALLOC(uchar, Size);
if (result) {
memcpy(result, buf, l);
memcpy(result + l, mem, bytes);
}
else
esyslog("ERROR: failed to convert image to PNM");
}
}
else
esyslog("ERROR: video device VIDIOC_STREAMOFF failed");
}
else
esyslog("ERROR: video device VIDIOC_DQBUF failed");
}
else
esyslog("ERROR: failed to convert image to PNM");
esyslog("ERROR: video device VIDIOC_STREAMON failed");
}
else
esyslog("ERROR: video device VIDIOC_QBUF failed");
munmap(mem, msize);
}
else
esyslog("ERROR: failed to memmap video device");
}
munmap(mem, msize);
else
esyslog("ERROR: video device VIDIOC_QUERYBUF failed");
}
else
esyslog("ERROR: failed to memmap video device");
esyslog("ERROR: video device VIDIOC_REQBUFS failed");
}
else
esyslog("ERROR: video device VIDIOC_S_FMT failed");
close(videoDev);
return result;
}

6
dvbdevice.h
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.h 1.47 2008/02/08 13:48:31 kls Exp $
* $Id: dvbdevice.h 1.47.1.1 2012/02/14 12:46:35 kls Exp $
*/
#ifndef __DVBDEVICE_H
@ -15,8 +15,8 @@
#include "device.h"
#include "dvbspu.h"
#if DVB_API_VERSION != 3
#error VDR requires Linux DVB driver API version 3!
#if (DVB_API_VERSION << 8 | DVB_API_VERSION_MINOR) < 0x0300
#error VDR requires Linux DVB driver API version 3.0 or higher!
#endif
#define MAXDVBDEVICES 8