add ASS encoder and decoder

Originally committed as revision 25746 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -66,6 +66,8 @@ OBJS-$(CONFIG_AMV_DECODER)             += sp5xdec.o mjpegdec.o mjpeg.o
 OBJS-$(CONFIG_ANM_DECODER)             += anm.o
 OBJS-$(CONFIG_ANSI_DECODER)            += ansi.o cga_data.o
 OBJS-$(CONFIG_APE_DECODER)             += apedec.o
+OBJS-$(CONFIG_ASS_DECODER)             += assdec.o ass.o
+OBJS-$(CONFIG_ASS_ENCODER)             += assenc.o ass.o
 OBJS-$(CONFIG_ASV1_DECODER)            += asv1.o mpeg12data.o
 OBJS-$(CONFIG_ASV1_ENCODER)            += asv1.o mpeg12data.o
 OBJS-$(CONFIG_ASV2_DECODER)            += asv1.o mpeg12data.o

libavcodec/allcodecs.c

@@ -342,6 +342,7 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC  (ADPCM_YAMAHA, adpcm_yamaha);
 
     /* subtitles */
+    REGISTER_ENCDEC  (ASS, ass);
     REGISTER_ENCDEC  (DVBSUB, dvbsub);
     REGISTER_ENCDEC  (DVDSUB, dvdsub);
     REGISTER_DECODER (PGSSUB, pgssub);