mmal: Add deinterlace filter

Add a video_filter module which uses the Broadcom Multi Media Abstraction
Layer (mmal) to deinterlace video in hardware on supported platforms like the
Raspberry Pi.
As of now it is only working in opaque mode, due to a broadcom firmware
limitation.  Thus it can only be used along with mmal/codec and mmal/vout.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/MODULES_LIST

@@ -212,6 +212,7 @@ $Id$
  * mjpeg: a demuxer for multipart and concatenated JPEG data
  * mkv: Matroska demuxer
  * mmal_codec: mmal based video decoder
+ * mmal_deinterlace: mmal deinterlace filter
  * mmal_vout: mmal based video renderer
  * mmdevice: Windows Audio Session API audio output using MMDevice
  * mod: MOD demuxer

modules/hw/mmal/Makefile.am

@@ -15,3 +15,9 @@ libmmal_codec_plugin_la_CFLAGS = $(AM_CFLAGS)
 libmmal_codec_plugin_la_LDFLAGS = $(AM_LDFLAGS)
 libmmal_codec_plugin_la_LIBADD = $(LIBS_mmal)
 mmal_LTLIBRARIES += libmmal_codec_plugin.la
+
+libmmal_deinterlace_plugin_la_SOURCES = deinterlace.c mmal_picture.c
+libmmal_deinterlace_plugin_la_CFLAGS = $(AM_CFLAGS)
+libmmal_deinterlace_plugin_la_LDFLAGS = $(AM_LDFLAGS)
+libmmal_deinterlace_plugin_la_LIBADD = $(LIBS_mmal)
+mmal_LTLIBRARIES += libmmal_deinterlace_plugin.la