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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I followed the instructions at http://www.ffmpeg.org/platform.html#Crosscompilation-for-Windows-under-Cygwin to build FFMPEG windows DLLs for GPL2. I use the following commands
in cygwin to configure and build it:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./configure --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
--disable-programs --disable-doc --disable-swresample --disable-postproc --disable-zlib --disable-bzlib --disable-pthreads --disable-os2threads --enable-w32threads --arch=x86 --enable-runtime-cpudetect ; make ; make install<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">My program is currently built in Visual Studio 2005 (though I will move to 2012 once another team member finishes migrating our projects and getting them all to build correctly).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">With just 1 or 2 threads it works fine most of the time (I'm using avformat to read various video clips, and convert/rescale to YUV420P which is what our processing module
needs; I'm also using libavcodec to encode and decode JPEGs of single frames).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">However, when I get more threads running (e.g. 5 videos being processed in parallel and JPEG frames being streamed to a viewer) I'm getting intermittent crashes in the DLLs.
Often the crash is in the heap manager (e.g. mscvrt.dll!_malloc called from avutil-52.dll). Unfortunately, even disabling stripping of the output, Visual Studio doesn't tell me anything about locations within the DLLs (and Bounds Checker probably won't be
much help for the same reason), and av_log_set_level(AV_LOG_DEBUG) didn't give me more info. Adding
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> --assert-level=2 --enable-memory-poisoning --enable-ftrapv --disable-stripping<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">to the configure command makes it crash faster/more often but still doesn't give me any "smoking guns".<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I built from http://www.ffmpeg.org/releases/ffmpeg-1.2.1.tar.bz2, but I've also tried 1.2 and http://www.ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 (last night's build).
I had similar results with all 3.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I do have a lock manager registered with av_lockmgr_register(ffmpeg_lockmgr):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">extern "C" static int ffmpeg_lockmgr(void **mtx, enum AVLockOp op)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_ASSERT(mtx,"ffmpeg_lockmgr: NULL param");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_ASSERT(*mtx || (op == AV_LOCK_CREATE),"ffmpeg_lockmgr: NULL *mtx");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_Mutex *pMutex = (AE_Mutex *) *mtx;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> switch(op) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> case AV_LOCK_CREATE:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_CALLOC_CHECK_GOTO_VOID(pMutex,AE_Mutex,1);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_CHECK_GOTO_VOID(ae_mutex_init(pMutex));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> *mtx = pMutex;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> case AV_LOCK_OBTAIN:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_CHECK_GOTO_VOID(ae_mutex_lock(pMutex));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> case AV_LOCK_RELEASE:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> ae_mutex_release(pMutex);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> case AV_LOCK_DESTROY:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> ae_mutex_finish(pMutex);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_CLEANUP(*mtx);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> default:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> ae_log(AE_LOG_ERROR,"ffmpeg_lockmgr: unrecognized op %d",op);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return -1;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">One thing I've noticed several times (but not every crash) is my lock manager getting called with an op value of 0xCCCCCCCC (the uninitialized variable value). I checked
every place in the source code that calls the lock manager callback and hard-coded defines are always used for the op value, so I'm wondering if the calling convention is wrong and I need to add something (or maybe it is just a corruption of the stack backtrace
displayed in Visual Studio since the lock manager seems to work fine most of the time and the program breaks quickly with a codec threading warning when I don't register the lock manager).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I also register my own log handler with av_log_set_callback(ffmpeg_log) to redirect the log (though commenting out the registration doesn't avoid the crash).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">extern "C" static void ffmpeg_log(void *ptr, int level, const char *fmt, va_list vargs)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> int loglevel = av_log_get_level();<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> if (level > loglevel)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> return;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> AE_LogType type;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> if (level <= AV_LOG_FATAL) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> type = AE_LOG_FATAL;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> } else if (level <= AV_LOG_ERROR) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> type = AE_LOG_ERROR;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> } else if (level <= AV_LOG_WARNING) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> type = AE_LOG_WARNING;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> } else if (level <= AV_LOG_INFO) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> type = AE_LOG_INFO;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> } else {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> type = AE_LOG_DEBUG;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> char line[2048];<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> static int print_prefix = 1;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> av_log_format_line(ptr, level, fmt, vargs, line, sizeof(line), &print_prefix);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> ae_log(type, "FFMPEG: %s",line);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I did find an old (2009) mention at http://japanesesoapbox.blogspot.com/2009/09/ffmpeg-and-mingw.html of some issue with vararg passing, but for the most part my log messages
seem to come out correctly so maybe that issue was fixed in the last 4 years.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">I tried building FFMPEG with Visual Studio 2012 following the instructions at http://www.ffmpeg.org/platform.html#Microsoft-Visual-C_002b_002b. In MSYS I was able to get
the build to go most of the way through but it chokes on some PERL within the scripts/makefiles and I couldn't get past that without trying to debug those make files. Trying to build with Visual Studio in Cygwin doesn't work at all because I end up with clashes
between the CL executables from cygwin and visual studio. And I had absolutely no luck at trying to natively compile ffmpeg within the visual studio 2012 IDE (due to the lack of C99 support).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">The crash seems to be related to my use of the MJPEG codec to create JPEGs since it goes away if I turn off that code (JPEGging does work fine until it crashes). The JPEGging
code (summary without the error handling) is: <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodec = avcodec_find_encoder(AV_CODEC_ID_MJPEG);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx=avcodec_alloc_context3(m_pCodec);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->pix_fmt = m_targetPixelFormat = AV_PIX_FMT_YUVJ420P;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->color_range = AVCOL_RANGE_JPEG;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> av_init_packet(&m_packet);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_packet.data = NULL;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_packet.size = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->width = m_targetWidth;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->height = m_targetHeight;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->time_base.num = 1;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pCodecCtx->time_base.den = 1;
<span style="color:green">// Arbitrary frame rate - 1 fps<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in;text-autospace:none">
<span style="font-family:"Courier New"">avcodec_open2(m_pCodecCtx, m_pCodec,NULL);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->pts = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:blue">if</span> ((downscaleWidth > 1) || (downscaleHeight > 1))
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Point m_pFrame directly at data in pImg<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> img.GetFfmpegArraysFromImage(m_pFrame->data,m_pFrame->linesize);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->width = pImg->size.width;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->height = pImg->size.height;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Convert to target color model / size <o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> ConvertScaleImg(m_tmpImage2);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Now point at converted image <o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> img.m_pImage = pImg = m_tmpImage2;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in;text-autospace:none">
<span style="font-family:"Courier New";color:green"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Finish setting up frame as source for JPEG<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> img.GetFfmpegArraysFromImage(m_pFrame->data,m_pFrame->linesize);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->format = AV_PIX_FMT_YUV420P;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->width = m_pCodecCtx->width;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->height = m_pCodecCtx->height;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in;text-autospace:none">
<span style="font-family:"Courier New"">avcodec_encode_video2(m_pCodecCtx, &m_packet, m_pFrame, &got_output);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Copy JPEG to output buffer <o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> ae_memcpy(*jpgBuffer,m_packet.data,m_packet.size);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> *jpgSize = m_packet.size;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> av_free_packet(&m_packet);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New";color:blue">void</span><span style="font-family:"Courier New""> CAE_FfmpegCommon::ConvertScaleImg(CAE_FfmpegImage & outImg)
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// Get context for converting/scaling image. Reuses current one if possible.<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pSwsContext = sws_getCachedContext(m_pSwsContext,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_pFrame->width,m_pFrame->height,m_pCodecCtx->pix_fmt,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> m_targetWidth,m_targetHeight,m_targetPixelFormat,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> SWS_BILINEAR,NULL,NULL,NULL);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">/* Setup arrays with pointers to planes of destination image. */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> uint8_t *dst_data[FFMPEG_NUM_PLANES];<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:blue">int</span> dst_linesize[FFMPEG_NUM_PLANES];<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> outImg.GetFfmpegArraysFromImage(dst_data, dst_linesize);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:green">// convert to destination format<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> sws_scale(m_pSwsContext, m_pFrame->data, m_pFrame->linesize, 0, m_pFrame->height,dst_data, dst_linesize);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">}<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New";color:blue">void</span><span style="font-family:"Courier New""> CAE_FfmpegImage::GetFfmpegArraysFromImage(uint8_t *pointers[FFMPEG_NUM_PLANES],
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> <span style="color:blue">int</span> linesizes[FFMPEG_NUM_PLANES])<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">
<span style="color:blue">for</span> (<span style="color:blue">int</span> i=0;i<FFMPEG_NUM_PLANES;i++) {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> pointers[i] = m_pImage->pPlane[i].pPtr;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> linesizes[i] = m_pImage->pPlane[i].stride;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New""> }<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-family:"Courier New"">}<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Any suggestions for fixing this crash?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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