mpeg4videodec: export quarter_sample & divx_packed

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/mpeg4videodec.c

@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/opt.h"
 #include "mpegvideo.h"
 #include "mpeg4video.h"
 #include "h263.h"
@@ -2276,6 +2277,26 @@ static const AVProfile mpeg4_video_profiles[] = {
     { FF_PROFILE_MPEG4_ADVANCED_SIMPLE,           "Advanced Simple Profile" },
 };
 
+static const AVOption mpeg4_options[] = {
+    {"quarter_sample", "1/4 subpel MC", offsetof(MpegEncContext, quarter_sample), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, 0},
+    {"divx_packed", "divx style packed b frames", offsetof(MpegEncContext, divx_packed), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, 0},
+    {NULL}
+};
+
+static const AVClass mpeg4_class = {
+    "MPEG4 Video Decoder",
+    av_default_item_name,
+    mpeg4_options,
+    LIBAVUTIL_VERSION_INT,
+};
+
+static const AVClass mpeg4_vdpau_class = {
+    "MPEG4 Video VDPAU Decoder",
+    av_default_item_name,
+    mpeg4_options,
+    LIBAVUTIL_VERSION_INT,
+};
+
 AVCodec ff_mpeg4_decoder = {
     .name           = "mpeg4",
     .type           = AVMEDIA_TYPE_VIDEO,
@@ -2290,7 +2311,8 @@ AVCodec ff_mpeg4_decoder = {
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
     .pix_fmts= ff_hwaccel_pixfmt_list_420,
     .profiles = NULL_IF_CONFIG_SMALL(mpeg4_video_profiles),
-    .update_thread_context= ONLY_IF_THREADS_ENABLED(ff_mpeg_update_thread_context)
+    .update_thread_context= ONLY_IF_THREADS_ENABLED(ff_mpeg_update_thread_context),
+    .priv_class = &mpeg4_class,
 };
 
 
@@ -2306,5 +2328,6 @@ AVCodec ff_mpeg4_vdpau_decoder = {
     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
     .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 (VDPAU)"),
     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_VDPAU_MPEG4, PIX_FMT_NONE},
+    .priv_class = &mpeg4_vdpau_class,
 };
 #endif