ffmpeg-3.x.patch

--- libavcodec/libvorbisenc.c	Mon Jun 27 06:54:29 2016
+++ libavcodec/libvorbisenc.c	Wed Nov 08 10:22:20 2017
@@ -91,7 +91,7 @@
          * NOTE: we use the oggenc range of -1 to 10 for global_quality for
          *       user convenience, but libvorbis uses -0.1 to 1.0.
          */
-        float q = avctx->global_quality / (float)FF_QP2LAMBDA;
+        float q = avctx->global_quality / (float)FF_QP2LAMBDA -2.0;
         /* default to 3 if the user did not set quality or bitrate */
         if (!(avctx->flags & AV_CODEC_FLAG_QSCALE))
             q = 3.0;
--- libavfilter/af_ladspa.c	Tue Sep 12 07:51:34 2017
+++ libavfilter/af_ladspa.c	Sun Nov 05 09:18:55 2017
@@ -34,6 +34,19 @@
 #include "avfilter.h"
 #include "internal.h"
 
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#define WIN32_EXTRA_LEAN
+#include <windows.h>
+static HMODULE GetThisExecHandle()
+{
+  MEMORY_BASIC_INFORMATION info;
+  size_t len = VirtualQueryEx(GetCurrentProcess(), (void*)GetThisExecHandle, &info, sizeof(info));
+  return len ? (HMODULE)info.AllocationBase : NULL;
+}
+static char ladspapath[MAX_PATH], *ls;
+#endif
+
 typedef struct LADSPAContext {
     const AVClass *class;
     char *dl_name;
@@ -428,6 +441,22 @@
         }
 
         av_free(paths);
+#ifdef _WIN32
+        if (GetModuleFileNameA(GetThisExecHandle(), ladspapath, sizeof(ladspapath) - 1))
+        {
+                for (ls = ladspapath; ls < ladspapath + strlen(ladspapath); ls++)
+                        if (*ls == '\\') *ls = '/';
+
+                if (ls = strrchr(ladspapath, '/'))
+                {
+                        *ls = 0;
+                        strncat(ladspapath, "\\ladspa\\",  sizeof(ladspapath) - 1 - strlen(ladspapath));
+                }
+        }
+        if (!s->dl_handle) {
+            s->dl_handle = try_load(ladspapath, s->dl_name);
+        }
+#endif
         if (!s->dl_handle && (paths = av_asprintf("%s/.ladspa/lib", getenv("HOME")))) {
             s->dl_handle = try_load(paths, s->dl_name);
             av_free(paths);
--- libavfilter/vf_frei0r.c	Tue Sep 12 07:51:34 2017
+++ libavfilter/vf_frei0r.c	Sun Nov 05 09:17:55 2017
@@ -42,6 +42,19 @@
 #include "internal.h"
 #include "video.h"
 
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#define WIN32_EXTRA_LEAN
+#include <windows.h>
+static HMODULE GetThisExecHandle()
+{
+  MEMORY_BASIC_INFORMATION info;
+  size_t len = VirtualQueryEx(GetCurrentProcess(), (void*)GetThisExecHandle, &info, sizeof(info));
+  return len ? (HMODULE)info.AllocationBase : NULL;
+}
+static char freipath[MAX_PATH], *ls;
+#endif
+
 typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height);
 typedef void (*f0r_destruct_f)(f0r_instance_t instance);
 typedef void (*f0r_deinit_f)(void);
@@ -226,6 +239,24 @@
         if (ret < 0)
             return ret;
     }
+#ifdef _WIN32
+    if (GetModuleFileNameA(GetThisExecHandle(), freipath, sizeof(freipath) - 1))
+    {
+            for (ls = freipath; ls < freipath + strlen(freipath); ls++)
+                    if (*ls == '\\') *ls = '/';
+
+            if (ls = strrchr(freipath, '/'))
+            {
+                    *ls = 0;
+                    strncat(freipath, "\\frei0r\\",  sizeof(freipath) - 1 - strlen(freipath));
+            }
+    }
+    if (!s->dl_handle) {
+        ret = load_path(ctx, &s->dl_handle, freipath, dl_name);
+        if (ret < 0)
+            return ret;
+    }
+#endif
     if (!s->dl_handle && (path = getenv("HOME"))) {
         char *prefix = av_asprintf("%s/.frei0r-1/lib/", path);
         if (!prefix)