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Fixed cFrameDetector::Analyze() to handle video streams where the frame type is not detectable from the first TS packet of a frame

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This commit is contained in:
Klaus Schmidinger 2009-11-01 15:02:49 +01:00
parent cb0b4768ad
commit 95c9d3cf51
2 changed files with 15 additions and 9 deletions
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4
HISTORY
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@ -6157,7 +6157,7 @@ Video Disk Recorder Revision History
Reinhard Nissl).
- Implemented full handling of subtitling descriptors (thanks to Mikko Tuumanen).
2009-10-25: Version 1.7.10
2009-11-01: Version 1.7.10
- Updated the Italian OSD texts (thanks to Diego Pierotto).
- Fixed wrong bracketing in cChannel::SubtitlingType() etc.
@ -6172,3 +6172,5 @@ Video Disk Recorder Revision History
compatible).
- Fixed saving terminal settings when running in background (thanks to Manuel
Reimer).
- Fixed cFrameDetector::Analyze() to handle video streams where the frame type
is not detectable from the first TS packet of a frame.

20
remux.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: remux.c 2.26 2009/08/16 15:13:42 kls Exp $
* $Id: remux.c 2.27 2009/11/01 12:25:17 kls Exp $
*/
#include "remux.h"
@ -769,8 +769,12 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
}
if (TsHasPayload(Data) && !TsIsScrambled(Data) && TsPid(Data) == pid) {
if (TsPayloadStart(Data)) {
if (synced && Processed)
return Processed;
if (Length < 2 * TS_SIZE)
return 0; // need more data, in case the frame type is stored in the second TS packet
if (!frameDuration) {
// frame duration unknown, so collect a sequenece of PTS values:
// frame duration unknown, so collect a sequence of PTS values:
if (numPtsValues < MaxPtsValues && numIFrames < 2) { // collect a sequence containing at least two I-frames
const uchar *Pes = Data + TsPayloadOffset(Data);
if (PesHasPts(Pes)) {
@ -836,8 +840,6 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
case 0x01: // MPEG 1 video
case 0x02: // MPEG 2 video
if (scanner == 0x00000100) { // Picture Start Code
if (synced && Processed)
return Processed;
newFrame = true;
independentFrame = ((Data[i + 2] >> 3) & 0x07) == 1; // I-Frame
if (synced) {
@ -851,12 +853,12 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
dbgframes("%d ", (Data[i + 2] >> 3) & 0x07);
}
scanner = 0;
if (synced && Processed)
return Processed;
}
break;
case 0x1B: // MPEG 4 video
if (scanner == 0x00000109) { // Access Unit Delimiter
if (synced && Processed)
return Processed;
newFrame = true;
independentFrame = Data[i + 1] == 0x10;
if (synced) {
@ -876,13 +878,13 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
numIFrames++;
dbgframes("%02X ", Data[i + 1]);
}
if (synced && Processed)
return Processed;
scanner = 0;
}
break;
case 0x04: // MPEG audio
case 0x06: // AC3 audio
if (synced && Processed)
return Processed;
newFrame = true;
independentFrame = true;
if (!synced) {
@ -891,6 +893,8 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
numIFrames++;
}
scanning = false;
if (synced && Processed)
return Processed;
break;
default: esyslog("ERROR: unknown stream type %d (PID %d) in frame detector", type, pid);
pid = 0; // let's just ignore any further data