Add H.264 bitstream decoding through VAAPI.

Originally committed as revision 20957 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -137,6 +137,7 @@ OBJS-$(CONFIG_H264_DECODER)            += h264.o h264idct.o h264pred.o \
                                           h264_parser.o cabac.o        \
                                           mpegvideo.o error_resilience.o
 OBJS-$(CONFIG_H264_ENCODER)            += h264enc.o h264dspenc.o
+OBJS-$(CONFIG_H264_VAAPI_HWACCEL)      += vaapi_h264.o
 OBJS-$(CONFIG_HUFFYUV_DECODER)         += huffyuv.o
 OBJS-$(CONFIG_HUFFYUV_ENCODER)         += huffyuv.o
 OBJS-$(CONFIG_IDCIN_DECODER)           += idcinvideo.o

libavcodec/allcodecs.c

@@ -55,6 +55,7 @@ void avcodec_register_all(void)
 
     /* hardware accelerators */
     REGISTER_HWACCEL (H263_VAAPI, h263_vaapi);
+    REGISTER_HWACCEL (H264_VAAPI, h264_vaapi);
     REGISTER_HWACCEL (MPEG2_VAAPI, mpeg2_vaapi);
     REGISTER_HWACCEL (MPEG4_VAAPI, mpeg4_vaapi);
     REGISTER_HWACCEL (VC1_VAAPI, vc1_vaapi);