From f0112b57dfac4d9afc86ce671e3127f6bf7a4cc1 Mon Sep 17 00:00:00 2001
From: "v.audacity" <v.audacity@47890b92-0858-11df-a26f-8b716316a5bc>
Date: Wed, 29 Aug 2012 21:31:11 +0000
Subject: [PATCH] Benjamin Drung's disable-dynamic-ffmpeg-v3.patch for bug 233

---
 configure.in                   |  6 ++++++
 m4/audacity_checklib_ffmpeg.m4 |  4 ++++
 src/FFmpeg.cpp                 | 13 ++++++++++++-
 src/FFmpeg.h                   | 13 +++++++++++++
 src/configtemplate.h           |  3 +++
 src/prefs/LibraryPrefs.cpp     |  2 +-
 6 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/configure.in b/configure.in
index b1878292b..4df8c1c0c 100644
--- a/configure.in
+++ b/configure.in
@@ -180,6 +180,12 @@ AC_ARG_ENABLE(sse, [AC_HELP_STRING([--enable-sse],[enable SSE optimizations])],
 
 AC_ARG_ENABLE(universal_binary,[  --enable-universal_binary enable universal binary build: (default: disable)],[enable_universal_binary=$enableval],[enable_universal_binary=no])
 
+AC_ARG_ENABLE(dynamic-loading,
+            [AS_HELP_STRING([--enable-dynamic-loading],
+                            [enable dynamic loading of lame and FFmpeg [default=yes]])],
+            [dynamic_loading="$enableval"],
+            [dynamic_loading="yes"])
+
 dnl AC_ARG_WITH(wx-version,
 dnl            [AS_HELP_STRING([--with-wx-version],
 dnl                            [select wxWidgets version (if both installed) [2.8,]])],
diff --git a/m4/audacity_checklib_ffmpeg.m4 b/m4/audacity_checklib_ffmpeg.m4
index 41030747b..5fbeeb605 100644
--- a/m4/audacity_checklib_ffmpeg.m4
+++ b/m4/audacity_checklib_ffmpeg.m4
@@ -35,6 +35,10 @@ AC_DEFUN([AUDACITY_CHECKLIB_FFMPEG], [
       FFMPEG_SYSTEM_AVAILABLE="yes"
       FFMPEG_SYSTEM_CXXFLAGS="$AVCODEC_CFLAGS $AVFORMAT_CFLAGS $AVUTIL_CFLAGS"
       FFMPEG_SYSTEM_CPPSYMBOLS="USE_FFMPEG"
+      if test "x$dynamic_loading" = "xno"; then
+         FFMPEG_SYSTEM_LIBS="$AVCODEC_LIBS $AVFORMAT_LIBS $AVUTIL_LIBS"
+         AC_DEFINE(DISABLE_DYNAMIC_LOADING_FFMPEG, 1, [Use system FFmpeg library and disable dynamic loading of it.])
+      fi
       dnl build the extra object files needed to use FFmpeg. Paths inside
       dnl the audacity src/ dir, as this is subsitiuted into src/Makefile.in
       FFMPEG_SYSTEM_OPTOBJS="import/ImportFFmpeg.o export/ExportFFmpeg.o \
diff --git a/src/FFmpeg.cpp b/src/FFmpeg.cpp
index 7739a133a..fe79d8b03 100644
--- a/src/FFmpeg.cpp
+++ b/src/FFmpeg.cpp
@@ -754,6 +754,10 @@ bool FFmpegLibs::FindLibs(wxWindow *parent)
 
 bool FFmpegLibs::LoadLibs(wxWindow *parent, bool showerr)
 {
+#if defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
+   mLibsLoaded = InitLibs(wxEmptyString, showerr);
+   return mLibsLoaded;
+#endif
 
    wxLogMessage(wxT("Trying to load FFmpeg libraries..."));
    if (ValidLibsLoaded()) {
@@ -837,6 +841,7 @@ bool FFmpegLibs::ValidLibsLoaded()
 
 bool FFmpegLibs::InitLibs(wxString libpath_format, bool showerr)
 {
+#if !defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
    FreeLibs();
 
 #if defined(__WXMSW__)
@@ -1050,8 +1055,10 @@ bool FFmpegLibs::InitLibs(wxString libpath_format, bool showerr)
    FFMPEG_INITDYN(avutil, av_rescale_q);
    FFMPEG_INITDYN(avutil, avutil_version);
 
-   //FFmpeg initialization
    wxLogMessage(wxT("All symbols loaded successfully. Initializing the library."));
+#endif
+
+   //FFmpeg initialization
    avcodec_init();
    avcodec_register_all();
    av_register_all();
@@ -1090,7 +1097,11 @@ bool FFmpegLibs::InitLibs(wxString libpath_format, bool showerr)
       return false;
    }
 
+#if defined(DISABLE_DYNAMIC_LOADING_FFMPEG) && (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(52, 69, 0))
+   av_register_protocol(&ufile_protocol);
+#else
    av_register_protocol2(&ufile_protocol, sizeof(ufile_protocol));
+#endif
 
    return true;
 }
diff --git a/src/FFmpeg.h b/src/FFmpeg.h
index e89cb0474..2ed4c06dc 100644
--- a/src/FFmpeg.h
+++ b/src/FFmpeg.h
@@ -368,6 +368,18 @@ streamContext *import_ffmpeg_read_next_frame(AVFormatContext* formatContext,
 
 int import_ffmpeg_decode_frame(streamContext *sc, bool flushing);
 
+#if defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
+   // Use the preprocessor to rename old function names instead of checking the
+   // function names with FFMPEG_INITALT when loading the library.
+
+   #if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(52, 60, 0)
+   #define av_match_ext match_ext
+   #endif
+
+   #if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(52, 64, 0)
+   #define av_guess_format guess_format
+   #endif
+#else
 extern "C" {
    // A little explanation of what's going on here.
    //
@@ -900,6 +912,7 @@ extern "C" {
       (protocol, size)
    );
 };
+#endif
 
 #endif // USE_FFMPEG
 #endif // __AUDACITY_FFMPEG__
diff --git a/src/configtemplate.h b/src/configtemplate.h
index a6182e07d..e9badaa39 100644
--- a/src/configtemplate.h
+++ b/src/configtemplate.h
@@ -87,6 +87,9 @@
 /* Use system LAME library and disable dynamic loading of it. */
 #undef DISABLE_DYNAMIC_LOADING_LAME
 
+/* Use system FFmpeg library and disable dynamic loading of it. */
+#undef DISABLE_DYNAMIC_LOADING_FFMPEG
+
 /* Define if LADSPA plug-ins are enabled */
 #undef USE_LADSPA
 
diff --git a/src/prefs/LibraryPrefs.cpp b/src/prefs/LibraryPrefs.cpp
index 31ddbe180..4a477fada 100644
--- a/src/prefs/LibraryPrefs.cpp
+++ b/src/prefs/LibraryPrefs.cpp
@@ -133,7 +133,7 @@ void LibraryPrefs::PopulateOrExchange(ShuttleGui & S)
          S.Id(ID_FFMPEG_DOWN_BUTTON);
          wxButton *bdwn = S.AddButton(_("Dow&nload"),
                                       wxALL | wxALIGN_LEFT | wxALIGN_CENTRE_VERTICAL);
-#if !defined(USE_FFMPEG)
+#if !defined(USE_FFMPEG) || defined(DISABLE_DYNAMIC_LOADING_FFMPEG)
          bdwn->Enable(FALSE);
          bfnd->Enable(FALSE);
 #endif