Good day!
For some reasons i want to have class MPEG1or2FileServerDemux seekable
to have the possibility to seek on the input file. My small patch do
this work. I hope that this possibility will be usefull not only for me
and will be included in future releases of live555.
--
See you!
---
Vityusha V. Vinokurov - programmer
mailto:[email protected]
http://www.dialog.su
--- ..\live\liveMedia\include\MPEG1or2FileServerDemux.hh 2010-06-21
09:23:58.000000000 +0400
+++ liveMedia\include\MPEG1or2FileServerDemux.hh 2010-07-01
14:01:49.093270700 +0400
@@ -27,6 +27,9 @@
#ifndef _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
#include "MPEG1or2DemuxedElementaryStream.hh"
#endif
+#ifndef _BYTE_STREAM_FILE_SOURCE_HH
+#include "ByteStreamFileSource.hh"
+#endif
class MPEG1or2FileServerDemux: public Medium {
public:
@@ -43,6 +46,8 @@
unsigned fileSize() const { return fFileSize; }
float fileDuration() const { return fFileDuration; }
+ void SeekStream(float offset);
+
private:
MPEG1or2FileServerDemux(UsageEnvironment& env, char const* fileName,
Boolean reuseFirstSource);
@@ -59,6 +64,7 @@
unsigned fFileSize;
float fFileDuration;
Boolean fReuseFirstSource;
+ ByteStreamFileSource* fileSource;
MPEG1or2Demux* fSession0Demux;
MPEG1or2Demux* fLastCreatedDemux;
u_int8_t fLastClientSessionId;
--- ..\live\liveMedia\MPEG1or2FileServerDemux.cpp 2010-06-21
09:23:58.000000000 +0400
+++ liveMedia\MPEG1or2FileServerDemux.cpp 2010-07-01 14:01:34.624520700
+0400
@@ -20,7 +20,6 @@
#include "MPEG1or2FileServerDemux.hh"
#include "MPEG1or2DemuxedServerMediaSubsession.hh"
-#include "ByteStreamFileSource.hh"
MPEG1or2FileServerDemux*
MPEG1or2FileServerDemux::createNew(UsageEnvironment& env, char const* fileName,
@@ -77,7 +76,7 @@
// happening automatically.
if (fSession0Demux == NULL) {
// Open our input file as a 'byte-stream file source':
- ByteStreamFileSource* fileSource
+ fileSource
= ByteStreamFileSource::createNew(envir(), fFileName);
if (fileSource == NULL) return NULL;
fSession0Demux = MPEG1or2Demux::createNew(envir(), fileSource,
False/*note!*/);
@@ -88,7 +87,7 @@
// demux for it:
if (clientSessionId != fLastClientSessionId) {
// Open our input file as a 'byte-stream file source':
- ByteStreamFileSource* fileSource
+ fileSource
= ByteStreamFileSource::createNew(envir(), fFileName);
if (fileSource == NULL) return NULL;
@@ -108,6 +107,10 @@
return demuxToUse->newElementaryStream(streamIdTag);
}
+void MPEG1or2FileServerDemux::SeekStream(float offset) {
+ u_int64_t bOffset = (u_int64_t)(fileSource->fileSize() * offset);
+ fileSource->seekToByteAbsolute(bOffset);
+}
static Boolean getMPEG1or2TimeCode(FramedSource* dataSource,
MPEG1or2Demux& parentDemux,
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