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-rw-r--r--HISTORY2
-rw-r--r--dvbapi.c170
-rw-r--r--dvbapi.h3
3 files changed, 87 insertions, 88 deletions
diff --git a/HISTORY b/HISTORY
index c4a1f2a7..c9d404e7 100644
--- a/HISTORY
+++ b/HISTORY
@@ -863,3 +863,5 @@ Video Disk Recorder Revision History
- Removed all video overlay stuff from cDvbApi and SVDRP. Guido Fiala's new
'kvdr' version 0.4 now does these things itself. As a consequence of this you
will now need to use kvdr 0.4 or later.
+- The device /dev/video is now opened only if necessary (to GRAB an image),
+ allowing other programs (like 'kvdr', for instance) to use that device.
diff --git a/dvbapi.c b/dvbapi.c
index b3057b39..f72782b4 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -7,7 +7,7 @@
* DVD support initially written by Andreas Schultz <aschultz@warp10.net>
* based on dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si>
*
- * $Id: dvbapi.c 1.136 2001/11/04 11:30:00 kls Exp $
+ * $Id: dvbapi.c 1.137 2001/11/04 12:05:36 kls Exp $
*/
//#define DVDDEBUG 1
@@ -2557,10 +2557,6 @@ cDvbApi::cDvbApi(int n)
fd_video = OstOpen(DEV_OST_VIDEO, n, O_RDWR | O_NONBLOCK);
fd_audio = OstOpen(DEV_OST_AUDIO, n, O_RDWR | O_NONBLOCK);
- // Devices that may not be available, and are not necessary for normal operation:
-
- videoDev = OstOpen(DEV_VIDEO, n, O_RDWR);
-
// Devices that will be dynamically opened and closed when necessary:
fd_dvr = -1;
@@ -2725,91 +2721,93 @@ const cSchedules *cDvbApi::Schedules(cThreadLock *ThreadLock) const
bool cDvbApi::GrabImage(const char *FileName, bool Jpeg, int Quality, int SizeX, int SizeY)
{
- if (videoDev < 0)
- return false;
int result = 0;
- // just do this once?
- struct video_mbuf mbuf;
- result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
- int msize = mbuf.size;
- // gf: this needs to be a protected member of cDvbApi! //XXX kls: WHY???
- unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
- if (!mem || mem == (unsigned char *)-1)
- return false;
- // set up the size and RGB
- struct video_capability vc;
- result |= ioctl(videoDev, VIDIOCGCAP, &vc);
- 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;
- // this needs to be done every time:
- result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
- result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
- // 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;
- }
-
- if (Quality < 0)
- Quality = 255; //XXX is this 'best'???
-
- isyslog(LOG_INFO, "grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
- FILE *f = fopen(FileName, "wb");
- if (f) {
- if (Jpeg) {
- // write JPEG file:
- struct jpeg_compress_struct cinfo;
- struct jpeg_error_mgr jerr;
- cinfo.err = jpeg_std_error(&jerr);
- jpeg_create_compress(&cinfo);
- jpeg_stdio_dest(&cinfo, f);
- cinfo.image_width = vm.width;
- cinfo.image_height = vm.height;
- cinfo.input_components = 3;
- cinfo.in_color_space = JCS_RGB;
-
- jpeg_set_defaults(&cinfo);
- jpeg_set_quality(&cinfo, Quality, true);
- jpeg_start_compress(&cinfo, true);
-
- int rs = vm.width * 3;
- JSAMPROW rp[vm.height];
- for (int k = 0; k < vm.height; k++)
- rp[k] = &mem[rs * k];
- jpeg_write_scanlines(&cinfo, rp, vm.height);
- jpeg_finish_compress(&cinfo);
- jpeg_destroy_compress(&cinfo);
- }
- else {
- // write PNM file:
- if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
- fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
- LOG_ERROR_STR(FileName);
- result |= 1;
+ int videoDev = OstOpen(DEV_VIDEO, CardIndex(), O_RDWR);
+ if (videoDev >= 0) {
+ struct video_mbuf mbuf;
+ result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
+ if (result == 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;
+ result |= ioctl(videoDev, VIDIOCGCAP, &vc);
+ 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;
+ result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
+ result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
+ // 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;
+ }
+
+ if (Quality < 0)
+ Quality = 255; //XXX is this 'best'???
+
+ isyslog(LOG_INFO, "grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
+ FILE *f = fopen(FileName, "wb");
+ if (f) {
+ if (Jpeg) {
+ // write JPEG file:
+ struct jpeg_compress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_compress(&cinfo);
+ jpeg_stdio_dest(&cinfo, f);
+ cinfo.image_width = vm.width;
+ cinfo.image_height = vm.height;
+ cinfo.input_components = 3;
+ cinfo.in_color_space = JCS_RGB;
+
+ jpeg_set_defaults(&cinfo);
+ jpeg_set_quality(&cinfo, Quality, true);
+ jpeg_start_compress(&cinfo, true);
+
+ int rs = vm.width * 3;
+ JSAMPROW rp[vm.height];
+ for (int k = 0; k < vm.height; k++)
+ rp[k] = &mem[rs * k];
+ jpeg_write_scanlines(&cinfo, rp, vm.height);
+ jpeg_finish_compress(&cinfo);
+ jpeg_destroy_compress(&cinfo);
+ }
+ else {
+ // write PNM file:
+ if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
+ fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
+ LOG_ERROR_STR(FileName);
+ result |= 1;
+ }
+ }
+ fclose(f);
+ }
+ else {
+ LOG_ERROR_STR(FileName);
+ result |= 1;
+ }
+ munmap(mem, msize);
}
+ else
+ result |= 1;
}
- fclose(f);
+ close(videoDev);
}
- else {
- LOG_ERROR_STR(FileName);
- result |= 1;
- }
-
- munmap(mem, msize);
return result == 0;
}
diff --git a/dvbapi.h b/dvbapi.h
index a6b7e876..01bb2dd9 100644
--- a/dvbapi.h
+++ b/dvbapi.h
@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
- * $Id: dvbapi.h 1.57 2001/11/04 11:27:18 kls Exp $
+ * $Id: dvbapi.h 1.58 2001/11/04 11:39:42 kls Exp $
*/
#ifndef __DVBAPI_H
@@ -84,7 +84,6 @@ class cDvbApi {
friend class cTransferBuffer;
private:
FrontendType frontendType;
- int videoDev;
int fd_osd, fd_frontend, fd_sec, fd_dvr, fd_audio, fd_video, fd_demuxa1, fd_demuxa2, fd_demuxd1, fd_demuxd2, fd_demuxv, fd_demuxt;
int vPid, aPid1, aPid2, dPid1, dPid2;
bool SetPid(int fd, dmxPesType_t PesType, int Pid, dmxOutput_t Output);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 10:42:42 +0000