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Workaround for displaying still frames with the unpatched LinuxDVB driver

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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 - Improved file I/O in case of EINTR, which may occur e.g. with heavy system
load (thanks to Werner Fink). load (thanks to Werner Fink).
- Now writing the title of a recording into the 'summary.vdr' file. - 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
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * 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" #include "dvbapi.h"
@ -1182,10 +1182,26 @@ void cReplayBuffer::StripAudioPackets(uchar *b, int Length, uchar Except)
void cReplayBuffer::DisplayFrame(uchar *b, int Length) void cReplayBuffer::DisplayFrame(uchar *b, int Length)
{ {
StripAudioPackets(b, Length); StripAudioPackets(b, Length);
videoDisplayStillPicture sp = { (char *)b, Length };
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false)); CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(audioDev, AUDIO_SET_MUTE, true)); 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)); 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) void cReplayBuffer::Close(void)