Add missing file.

diff --git a/src/lib/ffmpeg_compatibility.cc b/src/lib/ffmpeg_compatibility.cc
new file mode 100644 (file)
index 0000000..c47cdf5
--- /dev/null
+++ b/src/lib/ffmpeg_compatibility.cc
@@ -0,0 +1,109 @@
+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+extern "C" {
+#include <libavfilter/avfiltergraph.h>
+}
+#include "exceptions.h"
+
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
+
+typedef struct {
+       enum PixelFormat pix_fmt;
+} AVSinkContext;
+
+static int
+avsink_init (AVFilterContext* ctx, const char* args, void* opaque)
+{
+       AVSinkContext* priv = (AVSinkContext *) ctx->priv;
+       if (!opaque) {
+               return AVERROR (EINVAL);
+       }
+
+       *priv = *(AVSinkContext *) opaque;
+       return 0;
+}
+
+static void
+null_end_frame (AVFilterLink *)
+{
+
+}
+
+static int
+avsink_query_formats (AVFilterContext* ctx)
+{
+       AVSinkContext* priv = (AVSinkContext *) ctx->priv;
+       enum PixelFormat pix_fmts[] = {
+               priv->pix_fmt,
+               PIX_FMT_NONE
+       };
+
+       avfilter_set_common_formats (ctx, avfilter_make_format_list ((int *) pix_fmts));
+       return 0;
+}
+
+#endif
+
+AVFilter*
+get_sink ()
+{
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
+       /* XXX does this leak stuff? */
+       AVFilter* buffer_sink = new AVFilter;
+       buffer_sink->name = av_strdup ("avsink");
+       buffer_sink->priv_size = sizeof (AVSinkContext);
+       buffer_sink->init = avsink_init;
+       buffer_sink->query_formats = avsink_query_formats;
+       buffer_sink->inputs = new AVFilterPad[2];
+       AVFilterPad* i0 = const_cast<AVFilterPad*> (&buffer_sink->inputs[0]);
+       i0->name = "default";
+       i0->type = AVMEDIA_TYPE_VIDEO;
+       i0->min_perms = AV_PERM_READ;
+       i0->rej_perms = 0;
+       i0->start_frame = 0;
+       i0->get_video_buffer = 0;
+       i0->get_audio_buffer = 0;
+       i0->end_frame = null_end_frame;
+       i0->draw_slice = 0;
+       i0->filter_samples = 0;
+       i0->poll_frame = 0;
+       i0->request_frame = 0;
+       i0->config_props = 0;
+       const_cast<AVFilterPad*> (&buffer_sink->inputs[1])->name = 0;
+       buffer_sink->outputs = new AVFilterPad[1];
+       const_cast<AVFilterPad*> (&buffer_sink->outputs[0])->name = 0;
+       return buffer_sink;
+#else
+       AVFilter* buffer_sink = avfilter_get_by_name("buffersink");
+       if (buffer_sink == 0) {
+               throw DecodeError ("Could not create buffer sink filter");
+       }
+
+       return buffer_sink;
+#endif
+}
+
+#if LIBAVFILTER_VERSION_MAJOR == 2 && LIBAVFILTER_VERSION_MINOR == 15
+AVFilterInOut *
+avfilter_inout_alloc ()
+{
+       return (AVFilterInOut *) av_malloc (sizeof (AVFilterInOut));
+}
+#endif