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Code Issues Releases Wiki Activity

Fixed displaying still pictures, now using the driver's VIDEO_STILLPICTURE call directly

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This commit is contained in:
Klaus Schmidinger 2003-08-30 11:48:45 +02:00
parent d07ae214f9
commit 7a64aeec74
3 changed files with 47 additions and 4 deletions
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2
CONTRIBUTORS
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@ -489,6 +489,8 @@ Oliver Endriss <o.endriss@gmx.de>
the remote control keys
for reporting a bug in reading 'epg.data' for channels with non-zero RID
for fixing I/O handling in case an explicit controlling terminal is given
for fixing displaying still pictures, now using the driver's VIDEO_STILLPICTURE call
directly
Reinhard Walter Buchner <rw.buchner@freenet.de>
for adding some satellites to 'sources.conf'

3
HISTORY
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@ -2341,3 +2341,6 @@ Video Disk Recorder Revision History
to Robert Bartl for reporting this one). The problem was introduced in version
1.2.2 through the fix for an occasional "Broken pipe" error in SVDRP connections.
- Updated 'channels.conf.terr' for Berlin.
- Fixed displaying still pictures, now using the driver's VIDEO_STILLPICTURE call
directly (thanks to Oliver Endriss). This also improves navigating through DVD
menus with the DVD plugin.

46
dvbdevice.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 1.62 2003/08/24 14:49:53 kls Exp $
* $Id: dvbdevice.c 1.63 2003/08/30 11:40:41 kls Exp $
*/
#include "dvbdevice.h"
@ -896,11 +896,49 @@ void cDvbDevice::StillPicture(const uchar *Data, int Length)
If anybody ever finds out what could be changed so that VIDEO_STILLPICTURE
could be used, please let me know!
kls 2002-03-23
2003-08-30: apparently the driver can't handle PES data, so Oliver Endriss
<o.endriss@gmx.de> has changed this to strip all PES headers
and send pure ES data to the driver. Seems to work just fine!
Let's drop the VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES stuff
once this has proven to work in all cases.
*/
//#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#ifdef VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
video_still_picture sp = { (char *)Data, Length };
CHECK(ioctl(fd_video, VIDEO_STILLPICTURE, &sp));
if (Data[0] == 0x00 && Data[1] == 0x00 && Data[2] == 0x01 && (Data[3] & 0xF0) == 0xE0) {
// PES data
char *buf = MALLOC(char, Length);
if (!buf)
return;
int i = 0;
int blen = 0;
while (i < Length - 4) {
if (Data[i] == 0x00 && Data[i + 1] == 0x00 && Data[i + 2] == 0x01 && (Data[i + 3] & 0xF0) == 0xE0) {
// skip PES header
int offs = i + 6;
int len = Data[i + 4] * 256 + Data[i + 5];
// skip header extension
if ((Data[i + 6] & 0xC0) == 0x80) {
offs += 3;
offs += Data[i + 8];
len -= 3;
len -= Data[i + 8];
}
memcpy(&buf[blen], &Data[offs], len);
i = offs + len;
blen += len;
}
else
i++;
}
video_still_picture sp = { buf, blen };
CHECK(ioctl(fd_video, VIDEO_STILLPICTURE, &sp));
free(buf);
}
else {
// non-PES data
video_still_picture sp = { (char *)Data, Length };
CHECK(ioctl(fd_video, VIDEO_STILLPICTURE, &sp));
}
#else
#define MIN_IFRAME 400000
for (int i = MIN_IFRAME / Length + 1; i > 0; i--) {