search for: mvect

Just wondering if someone can help me out... I'm testing the core of my decoder filter (win32)... and when i get into this function: tatic void DecodeMVectors ( PB_INSTANCE *pbi,ogg_uint32_t SBRows,ogg_uint32_t SBCols ) The decoding mode is 0. When it attempts to do these lines.... pbi->FragMVect[FragIndex + 1].x = MVect[1].x;pbi->FragMVect[FragIndex + 1].y = MVect[1].y; pbi->FragMVect[FragIndex + pbi->HFragments].x = MVect[2].x; pbi-&g...

...lues are divided by two. Algorithm in 7.5.1 gives MVX and MVY in -31..31. Algorithm in section 7.5.2 keep these values. In section 7.9.1.3, the use of MVX2 and MVY2 seem to be the solution but in algorithm 7.9.4, these two variables are initialized with the same value : B. Assign MVX the value |MVECTS[bi ]x | ? sign(MVECTS[bi ]x ). C. Assign MVY the value |MVECTS[bi ]y | ? sign(MVECTS[bi ]y ). D. Assign MVX2 the value |MVECTS[bi ]x | ? sign(MVECTS[bi ]x ). E. Assign MVY2 the value |MVECTS[bi ]y | ? sign(MVECTS[bi ]y ). As MVECTS are integer, floor and ciel functions give the same result. I do...

Good day! Could you please explain me the following: In case of playback of video stream theora, MS Visual Studio .NET 2003 shows a warning message in every frame about the usage of not initialized variable MVect in the file decode.c (run-time check). In case of key-frames playback no warning appears. When I disable the run-time check, the video stream plays normally, but it is undesirable. Theora is implemented in my project as a source, so when I disable the run-time check it will disable it for the while...

...tem. Switching to using the PGI compiler configures correctly (see the values at the bottom fo thismessage), but compilation aborts with: pgcc -I../../src/extra/zlib -I../../src/extra/bzip2 -I../../src/extra/pcre -I. -I../../src/include -I../../src/include -I/usr/local/include -DHAVE_CONFIG_H -Mvect=sse -Mscalarsse -Mcache_align -O2 -Kieee -c platform.c -o platform.o PGC-S-0040-Illegal use of symbol, glob_t (platform.c: 1141) PGC-W-0156-Type not specified, 'int' assumed (platform.c: 1141) PGC-W-0095-Type cast required for this conversion (platform.c: 1168) PGC/x86-64 Linux 7.0-2: compi...

...e relies on global structures being zero initialized though does not mention it so copy & pasting the code has some nasty side effects of touching uninitialized memory if those structures are no longer global. The most likely crash seems to be in theora_granule_time. decode.c line 467 accesses MVect[1].x which is not initialized if CODE_INTER_NO_MV is used. Apart from being sloppy programming and tripping Valgrind it also is problematic if compiled with VS.NET 2003 as the solution (after auto conversion from a VC6 project) has the runtime checking enabled which causes it to trip. I just initia...

...e relies on global structures being zero initialized though does not mention it so copy & pasting the code has some nasty side effects of touching uninitialized memory if those structures are no longer global. The most likely crash seems to be in theora_granule_time. decode.c line 467 accesses MVect[1].x which is not initialized if CODE_INTER_NO_MV is used. Apart from being sloppy programming and tripping Valgrind it also is problematic if compiled with VS.NET 2003 as the solution (after auto conversion from a VC6 project) has the runtime checking enabled which causes it to trip. I just initia...

I am trying to write a sample app that uses Theora for encoding/decoding a network video stream. Unfortunately, I keep running into this error: Run-Time Check Failure #3 - The variable 'MVect' is being used without being defined. It always happens on decryption, line 467 in decode.c. The issue is that CodingMethod is equal to 5 (CODE_GOLDENFRAME), which doesn't initialize the moving vectors - and yet it goes into this area anyway and promptly blows up because the moving vector...