Merge remote branch 'qatar/master'

* qatar/master: (23 commits)
  ac3enc: correct the flipped sign in the ac3_fixed encoder
  Eliminate pointless '#if 1' statements without matching '#else'.
  Add AVX FFT implementation.
  Increase alignment of av_malloc() as needed by AVX ASM.
  Update x86inc.asm from x264 to allow AVX emulation using SSE and MMX.
  mjpeg: Detect overreads in mjpeg_decode_scan() and error out.
  documentation: extend documentation for ffmpeg -aspect option
  APIChanges: update commit hashes for recent additions.
  lavc: deprecate FF_*_TYPE macros in favor of AV_PICTURE_TYPE_* enums
  aac: add headers needed for log2f()
  lavc: remove FF_API_MB_Q cruft
  lavc: remove FF_API_RATE_EMU cruft
  lavc: remove FF_API_HURRY_UP cruft
  pad: make the filter parametric
  vsrc_movie: add key_frame and pict_type.
  vsrc_movie: fix leak in request_frame()
  lavfi: add key_frame and pict_type to AVFilterBufferRefVideo.
  vsrc_buffer: add sample_aspect_ratio fields to arguments.
  lavfi: add fieldorder filter
  scale: make the filter parametric
  ...

Conflicts:
	Changelog
	doc/filters.texi
	ffmpeg.c
	libavcodec/ac3dec.h
	libavcodec/dsputil.c
	libavfilter/avfilter.h
	libavfilter/vf_scale.c
	libavfilter/vf_yadif.c
	libavfilter/vsrc_buffer.c

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

libavcodec/error_resilience.c

@@ -786,7 +786,6 @@ void ff_er_frame_end(MpegEncContext *s){
         }
     }
 
-#if 1
     /* handle overlapping slices */
     for(error_type=1; error_type<=3; error_type++){
         int end_ok=0;
@@ -807,8 +806,7 @@ void ff_er_frame_end(MpegEncContext *s){
                 end_ok=0;
         }
     }
-#endif
-#if 1
+
     /* handle slices with partitions of different length */
     if(s->partitioned_frame){
         int end_ok=0;
@@ -829,7 +827,7 @@ void ff_er_frame_end(MpegEncContext *s){
                 end_ok=0;
         }
     }
-#endif
+
     /* handle missing slices */
     if(s->error_recognition>=4){
         int end_ok=1;
@@ -853,7 +851,6 @@ void ff_er_frame_end(MpegEncContext *s){
         }
     }
 
-#if 1
     /* backward mark errors */
     distance=9999999;
     for(error_type=1; error_type<=3; error_type++){
@@ -878,7 +875,6 @@ void ff_er_frame_end(MpegEncContext *s){
                 distance= 9999999;
         }
     }
-#endif
 
     /* forward mark errors */
     error=0;
@@ -893,7 +889,7 @@ void ff_er_frame_end(MpegEncContext *s){
             s->error_status_table[mb_xy]|= error;
         }
     }
-#if 1
+
     /* handle not partitioned case */
     if(!s->partitioned_frame){
         for(i=0; i<s->mb_num; i++){
@@ -904,7 +900,6 @@ void ff_er_frame_end(MpegEncContext *s){
             s->error_status_table[mb_xy]= error;
         }
     }
-#endif
 
     dc_error= ac_error= mv_error=0;
     for(i=0; i<s->mb_num; i++){
@@ -1065,16 +1060,15 @@ void ff_er_frame_end(MpegEncContext *s){
             s->dc_val[2][mb_x + mb_y*s->mb_stride]= (dcv+4)>>3;
         }
     }
-#if 1
+
     /* guess DC for damaged blocks */
     guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
     guess_dc(s, s->dc_val[1], s->mb_width  , s->mb_height  , s->mb_stride, 0);
     guess_dc(s, s->dc_val[2], s->mb_width  , s->mb_height  , s->mb_stride, 0);
-#endif
+
     /* filter luma DC */
     filter181(s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride);
 
-#if 1
     /* render DC only intra */
     for(mb_y=0; mb_y<s->mb_height; mb_y++){
         for(mb_x=0; mb_x<s->mb_width; mb_x++){
@@ -1094,7 +1088,6 @@ void ff_er_frame_end(MpegEncContext *s){
             put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
         }
     }
-#endif
 
     if(s->avctx->error_concealment&FF_EC_DEBLOCK){
         /* filter horizontal block boundaries */