ffmpeg configured with webm decode only to avoid postproc that pulls in unuse...

patches/to_upstream/01_static_pthread_O2.patch

 diff -rpu -N orig/configure ffmpeg-mt/configure
---- orig/configure      2010-07-19 13:35:49.151379500 -0700
-+++ ffmpeg-mt/configure 2010-07-19 13:35:56.717379500 -0700
+--- orig/configure      2010-07-27 13:05:17.865562700 -0700
++++ ffmpeg-mt/configure 2010-07-27 13:05:29.670743100 -0700
 @@ -1788,7 +1788,7 @@ if   $cc -v 2>&1 | grep -qi ^gcc; then
          CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
          AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
      fi
 -    speed_cflags='-O3'
 +    speed_cflags='-O2'
      size_cflags='-Os'
  elif $cc --version 2>/dev/null | grep -q Intel; then
      cc_type=icc
 @@ -2607,6 +2607,9 @@ if ! disabled pthreads && ! enabled w32t
          add_extralibs -pthreads
      elif check_func pthread_create -lpthreadGC2; then
          add_extralibs -lpthreadGC2
 +    elif check_func pthread_create -lpthreadGC2 -lws2_32; then
 +        add_cflags -DPTW32_STATIC_LIB
 +        add_extralibs -lpthreadGC2 -lws2_32
      elif ! check_lib pthread.h pthread_create -lpthread; then
          disable pthreads
      fi
 @@ -2823,7 +2826,6 @@ elif enabled ccc; then
  elif enabled gcc; then
      check_cflags -fno-tree-vectorize
      check_cflags -Werror=implicit-function-declaration
 -    check_cflags -Werror=missing-prototypes
  elif enabled clang; then
      check_cflags -Qunused-arguments
  elif enabled armcc; then
 diff -rpu -N orig/libavcodec/allcodecs.c ffmpeg-mt/libavcodec/allcodecs.c
---- orig/libavcodec/allcodecs.c 2010-07-19 13:35:49.541379500 -0700
-+++ ffmpeg-mt/libavcodec/allcodecs.c    2010-07-19 13:35:56.732979500 -0700
+--- orig/libavcodec/allcodecs.c 2010-07-27 13:05:18.281604300 -0700
++++ ffmpeg-mt/libavcodec/allcodecs.c    2010-07-27 13:05:29.675743600 -0700
 @@ -45,6 +45,14 @@
            extern AVBitStreamFilter x##_bsf; \
            if(CONFIG_##X##_BSF)     av_register_bitstream_filter(&x##_bsf); }
  
 +#ifdef PTW32_STATIC_LIB
 +static void detach_ptw32(void)
 +{
 +    pthread_win32_thread_detach_np();
 +    pthread_win32_process_detach_np();
 +}
 +#endif
 +
  void avcodec_register_all(void)
  {
      static int initialized;
 @@ -53,6 +61,11 @@ void avcodec_register_all(void)
          return;
      initialized = 1;
  
 +#ifdef PTW32_STATIC_LIB
 +    pthread_win32_process_attach_np();
 +    pthread_win32_thread_attach_np();
 +    atexit(detach_ptw32);
 +#endif
      /* hardware accelerators */
      REGISTER_HWACCEL (H263_VAAPI, h263_vaapi);
      REGISTER_HWACCEL (H264_DXVA2, h264_dxva2);