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Workaround for displaying still frames with the unpatched LinuxDVB driver

This commit is contained in:
Klaus Schmidinger 2002-03-23 14:24:27 +01:00
parent 460e907cb9
commit a9e4cc7d63
2 changed files with 21 additions and 2 deletions
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3
HISTORY
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@ -1128,3 +1128,6 @@ Video Disk Recorder Revision History
- Improved file I/O in case of EINTR, which may occur e.g. with heavy system
load (thanks to Werner Fink).
- Now writing the title of a recording into the 'summary.vdr' file.
- Workaround for displaying still frames with the unpatched LinuxDVB driver
(if anybody ever finds out why the unpatched driver doesn't display VDR's
still frames, please let me know).

20
dvbapi.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbapi.c 1.163 2002/03/16 14:20:47 kls Exp $
* $Id: dvbapi.c 1.164 2002/03/23 14:14:03 kls Exp $
*/
#include "dvbapi.h"
@ -1182,10 +1182,26 @@ void cReplayBuffer::StripAudioPackets(uchar *b, int Length, uchar Except)
void cReplayBuffer::DisplayFrame(uchar *b, int Length)
{
StripAudioPackets(b, Length);
videoDisplayStillPicture sp = { (char *)b, Length };
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(audioDev, AUDIO_SET_MUTE, true));
/* Using the VIDEO_STILLPICTURE ioctl call would be the
correct way to display a still frame, but unfortunately this
doesn't work with frames from VDR. So let's do pretty much the
same here as in DVB/driver/dvb.c's play_iframe() - I have absolutely
no idea why it works this way, but doesn't work with VIDEO_STILLPICTURE.
If anybody ever finds out what could be changed so that VIDEO_STILLPICTURE
could be used, please let me know!
kls 2002-03-23
*/
//#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#ifdef VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
videoDisplayStillPicture sp = { (char *)b, Length };
CHECK(ioctl(videoDev, VIDEO_STILLPICTURE, &sp));
#else
#define MIN_IFRAME 400000
for (int i = MIN_IFRAME / Length + 1; i > 0; i--)
safe_write(videoDev, b, Length);
#endif
}
void cReplayBuffer::Close(void)