the required header mathematics.h is not being included explicitly.
I have just included it, and verified that this also works with current
version 0.7, since the header is also available there."
I don’t have access to an OSX or Linux dev machine to make the changes required to the quick time plugin. This plugin will just default to returning 0."
OpenSceneGraph\src\osgPlugins\ffmpeg\FFmpegDecoderAudio.cpp
It solves a wrong sample format being set for audiostreams type S32 and F32, for the
enum AVSampleFormat (in include/avutil/samplefmt.h) doesn't match
enum SampleFormat (in include/osg/AudioStream) for anything but
SAMPLE_FORMAT_U8 and SAMPLE_FORMAT_S16
"
and follow up that address versioning issue
"I can find the change, avutil version 50.38.0 introduced a new header file:
libavutil/samplefmt.h
older versions use
libavcodec/avcodec.h
with the sampleformats without AV_
an intermideate fix with the FF_API_OLD_SAMPLE_FMT is removed from ffmpeg 0.8.3 so
I think this is the correct fix:
#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(50,38,0)
#define AV_SAMPLE_FMT_NONE SAMPLE_FMT_NONE
#define AV_SAMPLE_FMT_U8 SAMPLE_FMT_U8
#define AV_SAMPLE_FMT_S16 SAMPLE_FMT_S16
#define AV_SAMPLE_FMT_S32 SAMPLE_FMT_S32
#define AV_SAMPLE_FMT_FLT SAMPLE_FMT_FLT
#define AV_SAMPLE_FMT_DBL SAMPLE_FMT_DBL
#define AV_SAMPLE_FMT_NB SAMPLE_FMT_NB
#endif
"
deprecated, which led to compilation errors in the OSG plugin. I tried
fixing them and tested with the version ffmpeg-git-5d4fd1d (ffmpeg
version > 0.8, libavcodec = 53.7.0) under Windows.
"
Now we can use ffmpeg to render webcam video (using the vfwcap device) under Windows:
osgmovie 0 -e ffmpeg -O "format=vfwcap frame_rate=25"
The number 0 just indicates a default device number in ffmpeg.
I think this can work under Linux, too, and should be a bit better than comparing the filename with a '/dev/' string. Just type:
./osgmovie /dev/yourcam -e ffmpeg -O "format=video4linux2 frame_rate=30 size=320x240""
- missing copy attribute _referenceFrame in ClipNode in copy constructor
- checked iterators against the end in osgText
- close codec context in ffmpeg plugin to avoid memory leak
"
"enable thread locking in libavcodec
This is required for a multithreaded application using ffmpeg from
another thread."
"Prevent the audio from videos from hanging on exit if they are paused.
The video decoder already has similar logic."
"Add a way to retrieve the creation time for MPEG-4 files."
"fmpeg, improve wait for close logic
Both audio and video destructors have been succesfully using the logic,
if(isRunning())
{
m_exit = true;
join();
}
since it was introduced,
but the close routines are using,
m_exit = true;
if(isRunning() && waitForThreadToExit)
{
while(isRunning()) { OpenThreads::Thread::YieldCurrentThread(); }
}
which not only is it doing an unnecessary busy wait, but it doesn't
guaranteed that the other thread has terminated, just that it has
progressed far enough that OpenThreads has set the thread status as
not running. Like the destructor set the m_exit after checking
isRunning() to avoid the race condition of not getting to join()
because the thread was running, but isRunning() returns false.
Now that FFmpeg*close is fixed, call it from the destructor as well
to have that code in only one location."
The file FFmpegHeaders.hpp sets this definition. However, if stdint.h is
already included through other files, it won't take any effect.
Include FFmpeg headers as early as possible in order to avoid stdint.h being
included on other paths.
"
functionality and I also modified osgmovie example to support "seek"."
Note from Robert Osfield, changes osgmovie to use '>' for the seek as '+' was already used in a separate submission that had been merged.
to make is easier to write code that can work on DrawElementUByte, UShort or UInt.
Changed the osgTerrain::GeometryTechnique so that it automatically chooses
the use of DrawElementUShort or DrawElementsUInt accordining to the size of the tile.
/Users/uli/Projects/osg/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp: In member function \u2018int osgFFmpeg::FFmpegDecoderVideo::convert(AVPicture*, int, AVPicture*, int, int, int)\u2019:
/Users/uli/Projects/osg/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:245: error: invalid conversion from \u2018int\u2019 to \u2018PixelFormat\u2019
/Users/uli/Projects/osg/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:245: error: initializing argument 3 of \u2018SwsContext* sws_getContext(int, int, PixelFormat, int, int, PixelFormat, int, SwsFilter*, SwsFilter*, double*)\u2019
It expects 'src_pix_fmt' and 'dst_pix_fmt' to be of type 'PixelFormat' rather than int. The attached cast fixes this (for me).
I've also added Matroska video to the list of supported extensions"
Please look at the .diff files for details. I have already enjoyed the latest Chinese *big* movie "Red Cliff" with the fixed ffmpeg plugin and osgmovie. :D"
