]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/h264.h
Fix grammar errors in documentation
[ffmpeg] / libavcodec / h264.h
index 8e2b7763d52128aecff6818a1dbfaa4eb998798c..1bb18d1024babfa2d8bb0fe3e668cf134ee03ef8 100644 (file)
@@ -20,7 +20,7 @@
  */
 
 /**
- * @file libavcodec/h264.h
+ * @file
  * H.264 / AVC / MPEG4 part10 codec.
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 #ifndef AVCODEC_H264_H
 #define AVCODEC_H264_H
 
+#include "libavutil/intreadwrite.h"
 #include "dsputil.h"
 #include "cabac.h"
 #include "mpegvideo.h"
+#include "h264dsp.h"
 #include "h264pred.h"
 #include "rectangle.h"
 
@@ -60,6 +62,8 @@
 
 #define ALLOW_NOCHROMA
 
+#define FMO 0
+
 /**
  * The maximum number of slices supported by the decoder.
  * must be a power of 2
@@ -259,18 +263,7 @@ typedef struct MMCO{
  */
 typedef struct H264Context{
     MpegEncContext s;
-    int nal_ref_idc;
-    int nal_unit_type;
-    uint8_t *rbsp_buffer[2];
-    unsigned int rbsp_buffer_size[2];
-
-    /**
-      * Used to parse AVC variant of h264
-      */
-    int is_avc; ///< this flag is != 0 if codec is avc1
-    int got_avcC; ///< flag used to parse avcC data only once
-    int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
-
+    H264DSPContext h264dsp;
     int chroma_qp[2]; //QPc
 
     int qp_thresh;      ///< QP threshold to skip loopfilter
@@ -282,24 +275,33 @@ typedef struct H264Context{
     int chroma_pred_mode;
     int intra16x16_pred_mode;
 
+    int topleft_mb_xy;
     int top_mb_xy;
+    int topright_mb_xy;
     int left_mb_xy[2];
 
+    int topleft_type;
+    int top_type;
+    int topright_type;
+    int left_type[2];
+
+    const uint8_t * left_block;
+    int topleft_partition;
+
     int8_t intra4x4_pred_mode_cache[5*8];
-    int8_t (*intra4x4_pred_mode)[8];
+    int8_t (*intra4x4_pred_mode);
     H264PredContext hpc;
     unsigned int topleft_samples_available;
     unsigned int top_samples_available;
     unsigned int topright_samples_available;
     unsigned int left_samples_available;
     uint8_t (*top_borders[2])[16+2*8];
-    uint8_t left_border[2*(17+2*9)];
 
     /**
      * non zero coeff count cache.
      * is 64 if not available.
      */
-    DECLARE_ALIGNED_8(uint8_t, non_zero_count_cache[6*8]);
+    DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[6*8];
 
     /*
     .UU.YYYY
@@ -312,8 +314,8 @@ typedef struct H264Context{
     /**
      * Motion vector cache.
      */
-    DECLARE_ALIGNED_8(int16_t, mv_cache[2][5*8][2]);
-    DECLARE_ALIGNED_8(int8_t, ref_cache[2][5*8]);
+    DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5*8][2];
+    DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5*8];
 #define LIST_NOT_USED -1 //FIXME rename?
 #define PART_NOT_AVAILABLE -2
 
@@ -334,9 +336,8 @@ typedef struct H264Context{
     int block_offset[2*(16+8)];
 
     uint32_t *mb2b_xy; //FIXME are these 4 a good idea?
-    uint32_t *mb2b8_xy;
+    uint32_t *mb2br_xy;
     int b_stride; //FIXME use s->b4_stride
-    int b8_stride;
 
     int mb_linesize;   ///< may be equal to s->linesize or s->linesize*2, for mbaff
     int mb_uvlinesize;
@@ -344,29 +345,19 @@ typedef struct H264Context{
     int emu_edge_width;
     int emu_edge_height;
 
-    int halfpel_flag;
-    int thirdpel_flag;
-
-    int unknown_svq3_flag;
-    int next_slice_index;
-
-    SPS *sps_buffers[MAX_SPS_COUNT];
     SPS sps; ///< current sps
 
-    PPS *pps_buffers[MAX_PPS_COUNT];
     /**
      * current pps
      */
     PPS pps; //FIXME move to Picture perhaps? (->no) do we need that?
 
-    uint32_t dequant4_buffer[6][52][16];
+    uint32_t dequant4_buffer[6][52][16]; //FIXME should these be moved down?
     uint32_t dequant8_buffer[2][52][64];
     uint32_t (*dequant4_coeff[6])[16];
     uint32_t (*dequant8_coeff[2])[64];
-    int dequant_coeff_pps;     ///< reinit tables when pps changes
 
     int slice_num;
-    uint16_t *slice_table_base;
     uint16_t *slice_table;     ///< slice_table_base + 2*mb_stride + 1
     int slice_type;
     int slice_type_nos;        ///< S free slice type (SI/SP are remapped to I/P)
@@ -377,49 +368,21 @@ typedef struct H264Context{
     int mb_field_decoding_flag;
     int mb_mbaff;              ///< mb_aff_frame && mb_field_decoding_flag
 
-    DECLARE_ALIGNED_8(uint16_t, sub_mb_type[4]);
-
-    //POC stuff
-    int poc_lsb;
-    int poc_msb;
-    int delta_poc_bottom;
-    int delta_poc[2];
-    int frame_num;
-    int prev_poc_msb;             ///< poc_msb of the last reference pic for POC type 0
-    int prev_poc_lsb;             ///< poc_lsb of the last reference pic for POC type 0
-    int frame_num_offset;         ///< for POC type 2
-    int prev_frame_num_offset;    ///< for POC type 2
-    int prev_frame_num;           ///< frame_num of the last pic for POC type 1/2
-
-    /**
-     * frame_num for frames or 2*frame_num+1 for field pics.
-     */
-    int curr_pic_num;
-
-    /**
-     * max_frame_num or 2*max_frame_num for field pics.
-     */
-    int max_pic_num;
+    DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
 
     //Weighted pred stuff
     int use_weight;
     int use_weight_chroma;
     int luma_log2_weight_denom;
     int chroma_log2_weight_denom;
-    int luma_weight[2][48];
-    int luma_offset[2][48];
-    int chroma_weight[2][48][2];
-    int chroma_offset[2][48][2];
-    int implicit_weight[48][48];
-
-    //deblock
-    int deblocking_filter;         ///< disable_deblocking_filter_idc with 1<->0
-    int slice_alpha_c0_offset;
-    int slice_beta_offset;
-
-    int redundant_pic_count;
+    //The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
+    int luma_weight[48][2][2];
+    int chroma_weight[48][2][2][2];
+    int implicit_weight[48][48][2];
 
     int direct_spatial_mv_pred;
+    int col_parity;
+    int col_fieldoff;
     int dist_scale_factor[16];
     int dist_scale_factor_field[2][32];
     int map_col_to_list0[2][16+32];
@@ -431,24 +394,10 @@ typedef struct H264Context{
     unsigned int ref_count[2];   ///< counts frames or fields, depending on current mb mode
     unsigned int list_count;
     uint8_t *list_counts;            ///< Array of list_count per MB specifying the slice type
-    Picture *short_ref[32];
-    Picture *long_ref[32];
-    Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
     Picture ref_list[2][48];         /**< 0..15: frame refs, 16..47: mbaff field refs.
                                           Reordered version of default_ref_list
                                           according to picture reordering in slice header */
     int ref2frm[MAX_SLICES][2][64];  ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
-    Picture *delayed_pic[MAX_DELAYED_PIC_COUNT+2]; //FIXME size?
-    int outputed_poc;
-
-    /**
-     * memory management control operations buffer.
-     */
-    MMCO mmco[MAX_MMCO_COUNT];
-    int mmco_index;
-
-    int long_ref_count;  ///< number of actual long term references
-    int short_ref_count; ///< number of actual short term references
 
     //data partitioning
     GetBitContext intra_gb;
@@ -456,7 +405,7 @@ typedef struct H264Context{
     GetBitContext *intra_gb_ptr;
     GetBitContext *inter_gb_ptr;
 
-    DECLARE_ALIGNED_16(DCTELEM, mb[16*24]);
+    DECLARE_ALIGNED(16, DCTELEM, mb)[16*24];
     DCTELEM mb_padding[256];        ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too large or ensure that there is some unused stuff after mb
 
     /**
@@ -464,7 +413,6 @@ typedef struct H264Context{
      */
     CABACContext cabac;
     uint8_t      cabac_state[460];
-    int          cabac_init_idc;
 
     /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
     uint16_t     *cbp_table;
@@ -474,8 +422,8 @@ typedef struct H264Context{
     /* chroma_pred_mode for i4x4 or i16x16, else 0 */
     uint8_t     *chroma_pred_mode_table;
     int         last_qscale_diff;
-    int16_t     (*mvd_table[2])[2];
-    DECLARE_ALIGNED_8(int16_t, mvd_cache[2][5*8][2]);
+    uint8_t     (*mvd_table[2])[2];
+    DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5*8][2];
     uint8_t     *direct_table;
     uint8_t     direct_cache[5*8];
 
@@ -494,6 +442,79 @@ typedef struct H264Context{
 
     int x264_build;
 
+    int mb_xy;
+
+    int is_complex;
+
+    //deblock
+    int deblocking_filter;         ///< disable_deblocking_filter_idc with 1<->0
+    int slice_alpha_c0_offset;
+    int slice_beta_offset;
+
+//=============================================================
+    //Things below are not used in the MB or more inner code
+
+    int nal_ref_idc;
+    int nal_unit_type;
+    uint8_t *rbsp_buffer[2];
+    unsigned int rbsp_buffer_size[2];
+
+    /**
+     * Used to parse AVC variant of h264
+     */
+    int is_avc; ///< this flag is != 0 if codec is avc1
+    int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
+    int got_first; ///< this flag is != 0 if we've parsed a frame
+
+    SPS *sps_buffers[MAX_SPS_COUNT];
+    PPS *pps_buffers[MAX_PPS_COUNT];
+
+    int dequant_coeff_pps;     ///< reinit tables when pps changes
+
+    uint16_t *slice_table_base;
+
+
+    //POC stuff
+    int poc_lsb;
+    int poc_msb;
+    int delta_poc_bottom;
+    int delta_poc[2];
+    int frame_num;
+    int prev_poc_msb;             ///< poc_msb of the last reference pic for POC type 0
+    int prev_poc_lsb;             ///< poc_lsb of the last reference pic for POC type 0
+    int frame_num_offset;         ///< for POC type 2
+    int prev_frame_num_offset;    ///< for POC type 2
+    int prev_frame_num;           ///< frame_num of the last pic for POC type 1/2
+
+    /**
+     * frame_num for frames or 2*frame_num+1 for field pics.
+     */
+    int curr_pic_num;
+
+    /**
+     * max_frame_num or 2*max_frame_num for field pics.
+     */
+    int max_pic_num;
+
+    int redundant_pic_count;
+
+    Picture *short_ref[32];
+    Picture *long_ref[32];
+    Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
+    Picture *delayed_pic[MAX_DELAYED_PIC_COUNT+2]; //FIXME size?
+    int outputed_poc;
+
+    /**
+     * memory management control operations buffer.
+     */
+    MMCO mmco[MAX_MMCO_COUNT];
+    int mmco_index;
+
+    int long_ref_count;  ///< number of actual long term references
+    int short_ref_count; ///< number of actual short term references
+
+    int          cabac_init_idc;
+
     /**
      * @defgroup multithreading Members for slice based multithreading
      * @{
@@ -522,10 +543,6 @@ typedef struct H264Context{
     int last_slice_type;
     /** @} */
 
-    int mb_xy;
-
-    uint32_t svq3_watermark_key;
-
     /**
      * pic_struct in picture timing SEI message
      */
@@ -565,19 +582,27 @@ typedef struct H264Context{
      */
     int sei_recovery_frame_cnt;
 
-    int is_complex;
-
     int luma_weight_flag[2];   ///< 7.4.3.2 luma_weight_lX_flag
     int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
 
     // Timestamp stuff
     int sei_buffering_period_present;  ///< Buffering period SEI flag
     int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
+
+    //SVQ3 specific fields
+    int halfpel_flag;
+    int thirdpel_flag;
+    int unknown_svq3_flag;
+    int next_slice_index;
+    uint32_t svq3_watermark_key;
 }H264Context;
 
 
 extern const uint8_t ff_h264_chroma_qp[52];
 
+void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
+
+void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
 
 /**
  * Decode SEI
@@ -595,38 +620,38 @@ int ff_h264_decode_seq_parameter_set(H264Context *h);
 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
 
 /**
- * Decodes a network abstraction layer unit.
+ * Decode a network abstraction layer unit.
  * @param consumed is the number of bytes used as input
  * @param length is the length of the array
  * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
- * @returns decoded bytes, might be src+1 if no escapes
+ * @return decoded bytes, might be src+1 if no escapes
  */
 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length);
 
 /**
- * identifies the exact end of the bitstream
+ * Identify the exact end of the bitstream
  * @return the length of the trailing, or 0 if damaged
  */
 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src);
 
 /**
- * frees any data that may have been allocated in the H264 context like SPS, PPS etc.
+ * Free any data that may have been allocated in the H264 context like SPS, PPS etc.
  */
 av_cold void ff_h264_free_context(H264Context *h);
 
 /**
- * reconstructs bitstream slice_type.
+ * Reconstruct bitstream slice_type.
  */
-int ff_h264_get_slice_type(H264Context *h);
+int ff_h264_get_slice_type(const H264Context *h);
 
 /**
- * allocates tables.
+ * Allocate tables.
  * needs width/height
  */
 int ff_h264_alloc_tables(H264Context *h);
 
 /**
- * fills the default_ref_list.
+ * Fill the default_ref_list.
  */
 int ff_h264_fill_default_ref_list(H264Context *h);
 
@@ -635,7 +660,7 @@ void ff_h264_fill_mbaff_ref_list(H264Context *h);
 void ff_h264_remove_all_refs(H264Context *h);
 
 /**
- * Executes the reference picture marking (memory management control operations).
+ * Execute the reference picture marking (memory management control operations).
  */
 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
 
@@ -643,31 +668,32 @@ int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb);
 
 
 /**
- * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ * Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.
  */
 int ff_h264_check_intra4x4_pred_mode(H264Context *h);
 
 /**
- * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
+ * Check if the top & left blocks are available if needed & change the dc mode so it only uses the available blocks.
  */
 int ff_h264_check_intra_pred_mode(H264Context *h, int mode);
 
 void ff_h264_write_back_intra_pred_mode(H264Context *h);
 void ff_h264_hl_decode_mb(H264Context *h);
 int ff_h264_frame_start(H264Context *h);
+int ff_h264_decode_extradata(H264Context *h);
 av_cold int ff_h264_decode_init(AVCodecContext *avctx);
 av_cold int ff_h264_decode_end(AVCodecContext *avctx);
 av_cold void ff_h264_decode_init_vlc(void);
 
 /**
- * decodes a macroblock
- * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
+ * Decode a macroblock
+ * @return 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
  */
 int ff_h264_decode_mb_cavlc(H264Context *h);
 
 /**
- * decodes a CABAC coded macroblock
- * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
+ * Decode a CABAC coded macroblock
+ * @return 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
  */
 int ff_h264_decode_mb_cabac(H264Context *h);
 
@@ -717,6 +743,14 @@ static av_always_inline uint32_t pack16to32(int a, int b){
 #endif
 }
 
+static av_always_inline uint16_t pack8to16(int a, int b){
+#if HAVE_BIGENDIAN
+   return (b&0xFF) + (a<<8);
+#else
+   return (a&0xFF) + (b<<8);
+#endif
+}
+
 /**
  * gets the chroma qp.
  */
@@ -726,14 +760,10 @@ static inline int get_chroma_qp(H264Context *h, int t, int qscale){
 
 static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my);
 
-static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deblock){
+static void fill_decode_neighbors(H264Context *h, int mb_type){
     MpegEncContext * const s = &h->s;
     const int mb_xy= h->mb_xy;
     int topleft_xy, top_xy, topright_xy, left_xy[2];
-    int topleft_type, top_type, topright_type, left_type[2];
-    const uint8_t * left_block;
-    int topleft_partition= -1;
-    int i;
     static const uint8_t left_block_options[4][16]={
         {0,1,2,3,7,10,8,11,7+0*8, 7+1*8, 7+2*8, 7+3*8, 2+0*8, 2+3*8, 2+1*8, 2+2*8},
         {2,2,3,3,8,11,8,11,7+2*8, 7+2*8, 7+3*8, 7+3*8, 2+1*8, 2+2*8, 2+1*8, 2+2*8},
@@ -741,11 +771,9 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
         {0,2,0,2,7,10,7,10,7+0*8, 7+2*8, 7+0*8, 7+2*8, 2+0*8, 2+3*8, 2+0*8, 2+3*8}
     };
 
-    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);
+    h->topleft_partition= -1;
 
-    //FIXME deblocking could skip the intra and nnz parts.
-//     if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
-//         return;
+    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
 
     /* Wow, what a mess, why didn't they simplify the interlacing & intra
      * stuff, I can't imagine that these complex rules are worth it. */
@@ -753,199 +781,151 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
     topleft_xy = top_xy - 1;
     topright_xy= top_xy + 1;
     left_xy[1] = left_xy[0] = mb_xy-1;
-    left_block = left_block_options[0];
+    h->left_block = left_block_options[0];
     if(FRAME_MBAFF){
-        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
-        const int top_pair_xy      = pair_xy     - s->mb_stride;
-        const int topleft_pair_xy  = top_pair_xy - 1;
-        const int topright_pair_xy = top_pair_xy + 1;
-        const int topleft_mb_field_flag  = IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
-        const int top_mb_field_flag      = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
-        const int topright_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
-        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
+        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
         const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
-        const int bottom = (s->mb_y & 1);
-        tprintf(s->avctx, "fill_caches: curr_mb_field_flag:%d, left_mb_field_flag:%d, topleft_mb_field_flag:%d, top_mb_field_flag:%d, topright_mb_field_flag:%d\n", curr_mb_field_flag, left_mb_field_flag, topleft_mb_field_flag, top_mb_field_flag, topright_mb_field_flag);
-
-        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
-            top_xy -= s->mb_stride;
-        }
-        if (curr_mb_field_flag && (bottom || topleft_mb_field_flag)){
-            topleft_xy -= s->mb_stride;
-        } else if(bottom && !curr_mb_field_flag && left_mb_field_flag) {
-            topleft_xy += s->mb_stride;
-            // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
-            topleft_partition = 0;
-        }
-        if (curr_mb_field_flag && (bottom || topright_mb_field_flag)){
-            topright_xy -= s->mb_stride;
-        }
-        if (left_mb_field_flag != curr_mb_field_flag) {
-            left_xy[1] = left_xy[0] = pair_xy - 1;
-            if (curr_mb_field_flag) {
-                left_xy[1] += s->mb_stride;
-                left_block = left_block_options[3];
-            } else {
-                left_block= left_block_options[2 - bottom];
+        if(s->mb_y&1){
+            if (left_mb_field_flag != curr_mb_field_flag) {
+                left_xy[1] = left_xy[0] = mb_xy - s->mb_stride - 1;
+                if (curr_mb_field_flag) {
+                    left_xy[1] += s->mb_stride;
+                    h->left_block = left_block_options[3];
+                } else {
+                    topleft_xy += s->mb_stride;
+                    // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
+                    h->topleft_partition = 0;
+                    h->left_block = left_block_options[1];
+                }
+            }
+        }else{
+            if(curr_mb_field_flag){
+                topleft_xy  += s->mb_stride & (((s->current_picture.mb_type[top_xy - 1]>>7)&1)-1);
+                topright_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy + 1]>>7)&1)-1);
+                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
+            }
+            if (left_mb_field_flag != curr_mb_field_flag) {
+                if (curr_mb_field_flag) {
+                    left_xy[1] += s->mb_stride;
+                    h->left_block = left_block_options[3];
+                } else {
+                    h->left_block = left_block_options[2];
+                }
             }
         }
     }
 
-    h->top_mb_xy = top_xy;
+    h->topleft_mb_xy = topleft_xy;
+    h->top_mb_xy     = top_xy;
+    h->topright_mb_xy= topright_xy;
     h->left_mb_xy[0] = left_xy[0];
     h->left_mb_xy[1] = left_xy[1];
-    if(for_deblock){
-
-        //for sufficiently low qp, filtering wouldn't do anything
-        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
-            int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
-            int qp = s->current_picture.qscale_table[mb_xy];
-            if(qp <= qp_thresh
-            && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
-            && (left_xy[1]<0 || ((qp + s->current_picture.qscale_table[left_xy[1]] + 1)>>1) <= qp_thresh)
-            && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
-                return 1;
-            }
+    //FIXME do we need all in the context?
+
+    h->topleft_type = s->current_picture.mb_type[topleft_xy] ;
+    h->top_type     = s->current_picture.mb_type[top_xy]     ;
+    h->topright_type= s->current_picture.mb_type[topright_xy];
+    h->left_type[0] = s->current_picture.mb_type[left_xy[0]] ;
+    h->left_type[1] = s->current_picture.mb_type[left_xy[1]] ;
+
+    if(FMO){
+    if(h->slice_table[topleft_xy ] != h->slice_num) h->topleft_type = 0;
+    if(h->slice_table[top_xy     ] != h->slice_num) h->top_type     = 0;
+    if(h->slice_table[left_xy[0] ] != h->slice_num) h->left_type[0] = h->left_type[1] = 0;
+    }else{
+        if(h->slice_table[topleft_xy ] != h->slice_num){
+            h->topleft_type = 0;
+            if(h->slice_table[top_xy     ] != h->slice_num) h->top_type     = 0;
+            if(h->slice_table[left_xy[0] ] != h->slice_num) h->left_type[0] = h->left_type[1] = 0;
+        }
+    }
+    if(h->slice_table[topright_xy] != h->slice_num) h->topright_type= 0;
+}
 
-        *((uint64_t*)&h->non_zero_count_cache[0+8*1])= *((uint64_t*)&h->non_zero_count[mb_xy][ 0]);
-        *((uint64_t*)&h->non_zero_count_cache[0+8*2])= *((uint64_t*)&h->non_zero_count[mb_xy][ 8]);
-        *((uint32_t*)&h->non_zero_count_cache[0+8*5])= *((uint32_t*)&h->non_zero_count[mb_xy][16]);
-        *((uint32_t*)&h->non_zero_count_cache[4+8*3])= *((uint32_t*)&h->non_zero_count[mb_xy][20]);
-        *((uint64_t*)&h->non_zero_count_cache[0+8*4])= *((uint64_t*)&h->non_zero_count[mb_xy][24]);
-
-        h->cbp= h->cbp_table[mb_xy];
-
-        topleft_type = 0;
-        topright_type = 0;
-        top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
-        left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
-        left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
-
-        if(!IS_INTRA(mb_type)){
-            int list;
-            for(list=0; list<h->list_count; list++){
-                int8_t *ref;
-                int y, b_xy;
-                if(!USES_LIST(mb_type, list)){
-                    fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = ((LIST_NOT_USED)&0xFF)*0x01010101;
-                    continue;
-                }
+static void fill_decode_caches(H264Context *h, int mb_type){
+    MpegEncContext * const s = &h->s;
+    int topleft_xy, top_xy, topright_xy, left_xy[2];
+    int topleft_type, top_type, topright_type, left_type[2];
+    const uint8_t * left_block= h->left_block;
+    int i;
 
-                ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
-                if(for_deblock){
-                    int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
-                    ref += h->b8_stride;
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
+    topleft_xy   = h->topleft_mb_xy ;
+    top_xy       = h->top_mb_xy     ;
+    topright_xy  = h->topright_mb_xy;
+    left_xy[0]   = h->left_mb_xy[0] ;
+    left_xy[1]   = h->left_mb_xy[1] ;
+    topleft_type = h->topleft_type  ;
+    top_type     = h->top_type      ;
+    topright_type= h->topright_type ;
+    left_type[0] = h->left_type[0]  ;
+    left_type[1] = h->left_type[1]  ;
+
+    if(!IS_SKIP(mb_type)){
+        if(IS_INTRA(mb_type)){
+            int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
+            h->topleft_samples_available=
+            h->top_samples_available=
+            h->left_samples_available= 0xFFFF;
+            h->topright_samples_available= 0xEEEA;
+
+            if(!(top_type & type_mask)){
+                h->topleft_samples_available= 0xB3FF;
+                h->top_samples_available= 0x33FF;
+                h->topright_samples_available= 0x26EA;
+            }
+            if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
+                if(IS_INTERLACED(mb_type)){
+                    if(!(left_type[0] & type_mask)){
+                        h->topleft_samples_available&= 0xDFFF;
+                        h->left_samples_available&= 0x5FFF;
+                    }
+                    if(!(left_type[1] & type_mask)){
+                        h->topleft_samples_available&= 0xFF5F;
+                        h->left_samples_available&= 0xFF5F;
+                    }
                 }else{
-                *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
-                *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
-                ref += h->b8_stride;
-                *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
-                *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
-                }
+                    int left_typei = s->current_picture.mb_type[left_xy[0] + s->mb_stride];
 
-                b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
-                for(y=0; y<4; y++){
-                    *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y]= *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride];
-                    *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y]= *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride];
-                }
-
-            }
-        }
-    }else{
-        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
-        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
-        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
-        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
-        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
-
-    if(IS_INTRA(mb_type) && !for_deblock){
-        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
-        h->topleft_samples_available=
-        h->top_samples_available=
-        h->left_samples_available= 0xFFFF;
-        h->topright_samples_available= 0xEEEA;
-
-        if(!(top_type & type_mask)){
-            h->topleft_samples_available= 0xB3FF;
-            h->top_samples_available= 0x33FF;
-            h->topright_samples_available= 0x26EA;
-        }
-        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
-            if(IS_INTERLACED(mb_type)){
-                if(!(left_type[0] & type_mask)){
-                    h->topleft_samples_available&= 0xDFFF;
-                    h->left_samples_available&= 0x5FFF;
-                }
-                if(!(left_type[1] & type_mask)){
-                    h->topleft_samples_available&= 0xFF5F;
-                    h->left_samples_available&= 0xFF5F;
+                    assert(left_xy[0] == left_xy[1]);
+                    if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
+                        h->topleft_samples_available&= 0xDF5F;
+                        h->left_samples_available&= 0x5F5F;
+                    }
                 }
             }else{
-                int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
-                                ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
-                assert(left_xy[0] == left_xy[1]);
-                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
+                if(!(left_type[0] & type_mask)){
                     h->topleft_samples_available&= 0xDF5F;
                     h->left_samples_available&= 0x5F5F;
                 }
             }
-        }else{
-            if(!(left_type[0] & type_mask)){
-                h->topleft_samples_available&= 0xDF5F;
-                h->left_samples_available&= 0x5F5F;
-            }
-        }
 
-        if(!(topleft_type & type_mask))
-            h->topleft_samples_available&= 0x7FFF;
+            if(!(topleft_type & type_mask))
+                h->topleft_samples_available&= 0x7FFF;
 
-        if(!(topright_type & type_mask))
-            h->topright_samples_available&= 0xFBFF;
+            if(!(topright_type & type_mask))
+                h->topright_samples_available&= 0xFBFF;
 
-        if(IS_INTRA4x4(mb_type)){
-            if(IS_INTRA4x4(top_type)){
-                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
-                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
-                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
-                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
-            }else{
-                int pred;
-                if(!(top_type & type_mask))
-                    pred= -1;
-                else{
-                    pred= 2;
-                }
-                h->intra4x4_pred_mode_cache[4+8*0]=
-                h->intra4x4_pred_mode_cache[5+8*0]=
-                h->intra4x4_pred_mode_cache[6+8*0]=
-                h->intra4x4_pred_mode_cache[7+8*0]= pred;
-            }
-            for(i=0; i<2; i++){
-                if(IS_INTRA4x4(left_type[i])){
-                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
-                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
+            if(IS_INTRA4x4(mb_type)){
+                if(IS_INTRA4x4(top_type)){
+                    AV_COPY32(h->intra4x4_pred_mode_cache+4+8*0, h->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
                 }else{
-                    int pred;
-                    if(!(left_type[i] & type_mask))
-                        pred= -1;
-                    else{
-                        pred= 2;
+                    h->intra4x4_pred_mode_cache[4+8*0]=
+                    h->intra4x4_pred_mode_cache[5+8*0]=
+                    h->intra4x4_pred_mode_cache[6+8*0]=
+                    h->intra4x4_pred_mode_cache[7+8*0]= 2 - 3*!(top_type & type_mask);
+                }
+                for(i=0; i<2; i++){
+                    if(IS_INTRA4x4(left_type[i])){
+                        int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[left_xy[i]];
+                        h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= mode[6-left_block[0+2*i]];
+                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= mode[6-left_block[1+2*i]];
+                    }else{
+                        h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
+                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= 2 - 3*!(left_type[i] & type_mask);
                     }
-                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
-                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
                 }
             }
         }
-    }
-    }
 
 
 /*
@@ -958,104 +938,58 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
 */
 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
     if(top_type){
-        *(uint32_t*)&h->non_zero_count_cache[4+8*0]= *(uint32_t*)&h->non_zero_count[top_xy][4+3*8];
-
-        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][1+1*8];
-        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][2+1*8];
-
-        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][1+2*8];
-        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][2+2*8];
-
-    }else{
-        h->non_zero_count_cache[4+8*0]=
-        h->non_zero_count_cache[5+8*0]=
-        h->non_zero_count_cache[6+8*0]=
-        h->non_zero_count_cache[7+8*0]=
-
-        h->non_zero_count_cache[1+8*0]=
-        h->non_zero_count_cache[2+8*0]=
-
-        h->non_zero_count_cache[1+8*3]=
-        h->non_zero_count_cache[2+8*3]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
-
+        AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
+            h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][1+1*8];
+            h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][2+1*8];
+
+            h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][1+2*8];
+            h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][2+2*8];
+    }else {
+            h->non_zero_count_cache[1+8*0]=
+            h->non_zero_count_cache[2+8*0]=
+
+            h->non_zero_count_cache[1+8*3]=
+            h->non_zero_count_cache[2+8*3]=
+            AV_WN32A(&h->non_zero_count_cache[4+8*0], CABAC && !IS_INTRA(mb_type) ? 0 : 0x40404040);
     }
 
     for (i=0; i<2; i++) {
         if(left_type[i]){
             h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+0+2*i]];
             h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+1+2*i]];
-            h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+4+2*i]];
-            h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+5+2*i]];
+                h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+4+2*i]];
+                h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+5+2*i]];
         }else{
-            h->non_zero_count_cache[3+8*1 + 2*8*i]=
-            h->non_zero_count_cache[3+8*2 + 2*8*i]=
-            h->non_zero_count_cache[0+8*1 +   8*i]=
-            h->non_zero_count_cache[0+8*4 +   8*i]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
+                h->non_zero_count_cache[3+8*1 + 2*8*i]=
+                h->non_zero_count_cache[3+8*2 + 2*8*i]=
+                h->non_zero_count_cache[0+8*1 +   8*i]=
+                h->non_zero_count_cache[0+8*4 +   8*i]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
         }
     }
 
-    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
-    if(for_deblock && !CABAC && h->pps.transform_8x8_mode){
-        if(IS_8x8DCT(top_type)){
-            h->non_zero_count_cache[4+8*0]=
-            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
-            h->non_zero_count_cache[6+8*0]=
-            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
-        }
-        if(IS_8x8DCT(left_type[0])){
-            h->non_zero_count_cache[3+8*1]=
-            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
-        }
-        if(IS_8x8DCT(left_type[1])){
-            h->non_zero_count_cache[3+8*3]=
-            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
-        }
-
-        if(IS_8x8DCT(mb_type)){
-            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
-            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp_table[mb_xy] & 1;
-
-            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
-            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp_table[mb_xy] & 2;
-
-            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
-            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp_table[mb_xy] & 4;
-
-            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
-            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp_table[mb_xy] & 8;
-        }
-    }
-
-    if( CABAC && !for_deblock) {
+    if( CABAC ) {
         // top_cbp
         if(top_type) {
             h->top_cbp = h->cbp_table[top_xy];
-        } else if(IS_INTRA(mb_type)) {
-            h->top_cbp = 0x1C0;
         } else {
-            h->top_cbp = 0;
+            h->top_cbp = IS_INTRA(mb_type) ? 0x1CF : 0x00F;
         }
         // left_cbp
         if (left_type[0]) {
-            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
-        } else if(IS_INTRA(mb_type)) {
-            h->left_cbp = 0x1C0;
+            h->left_cbp = (h->cbp_table[left_xy[0]] & 0x1f0)
+                        |  ((h->cbp_table[left_xy[0]]>>(left_block[0]&(~1)))&2)
+                        | (((h->cbp_table[left_xy[1]]>>(left_block[2]&(~1)))&2) << 2);
         } else {
-            h->left_cbp = 0;
-        }
-        if (left_type[0]) {
-            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
-        }
-        if (left_type[1]) {
-            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
+            h->left_cbp = IS_INTRA(mb_type) ? 0x1CF : 0x00F;
         }
     }
+    }
 
 #if 1
-    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
+    if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){
         int list;
         for(list=0; list<h->list_count; list++){
-            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
+            if(!USES_LIST(mb_type, list)){
                 /*if(!h->mv_cache_clean[list]){
                     memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
                     memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
@@ -1063,160 +997,135 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                 }*/
                 continue;
             }
+            assert(!(IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred));
+
             h->mv_cache_clean[list]= 0;
 
             if(USES_LIST(top_type, list)){
                 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
-                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
-                *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
-                *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
-                *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
-                *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
-                if(for_deblock){
-                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
+                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
                     h->ref_cache[list][scan8[0] + 0 - 1*8]=
-                    h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
+                    h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][4*top_xy + 2];
                     h->ref_cache[list][scan8[0] + 2 - 1*8]=
-                    h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
-                }else{
-                h->ref_cache[list][scan8[0] + 0 - 1*8]=
-                h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
-                h->ref_cache[list][scan8[0] + 2 - 1*8]=
-                h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
-                }
+                    h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][4*top_xy + 3];
             }else{
-                *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
-                *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
-                *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
-                *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
-                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= (((for_deblock||top_type) ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
+                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
+                AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101);
             }
 
+            if(mb_type & (MB_TYPE_16x8|MB_TYPE_8x8)){
             for(i=0; i<2; i++){
                 int cache_idx = scan8[0] - 1 + i*2*8;
                 if(USES_LIST(left_type[i], list)){
                     const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
-                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
-                    *(uint32_t*)h->mv_cache[list][cache_idx  ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
-                    *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
-                    if(for_deblock){
-                        int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[i]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
-                        h->ref_cache[list][cache_idx  ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)]];
-                        h->ref_cache[list][cache_idx+8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)]];
-                    }else{
-                    h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
-                    h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
-                    }
+                    const int b8_xy= 4*left_xy[i] + 1;
+                    AV_COPY32(h->mv_cache[list][cache_idx  ], s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]]);
+                    AV_COPY32(h->mv_cache[list][cache_idx+8], s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]]);
+                        h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + (left_block[0+i*2]&~1)];
+                        h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + (left_block[1+i*2]&~1)];
                 }else{
-                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
-                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
+                    AV_ZERO32(h->mv_cache [list][cache_idx  ]);
+                    AV_ZERO32(h->mv_cache [list][cache_idx+8]);
                     h->ref_cache[list][cache_idx  ]=
-                    h->ref_cache[list][cache_idx+8]= (for_deblock||left_type[i]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+                    h->ref_cache[list][cache_idx+8]= (left_type[i]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
                 }
             }
-
-            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
-                continue;
-
-            if(USES_LIST(topleft_type, list)){
-                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
-                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
-                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
-                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
             }else{
-                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
-                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+                if(USES_LIST(left_type[0], list)){
+                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
+                    const int b8_xy= 4*left_xy[0] + 1;
+                    AV_COPY32(h->mv_cache[list][scan8[0] - 1], s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0]]);
+                    h->ref_cache[list][scan8[0] - 1]= s->current_picture.ref_index[list][b8_xy + (left_block[0]&~1)];
+                }else{
+                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1]);
+                    h->ref_cache[list][scan8[0] - 1]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+                }
             }
 
             if(USES_LIST(topright_type, list)){
                 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
-                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
-                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
-                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
+                AV_COPY32(h->mv_cache[list][scan8[0] + 4 - 1*8], s->current_picture.motion_val[list][b_xy]);
+                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][4*topright_xy + 2];
             }else{
-                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
+                AV_ZERO32(h->mv_cache [list][scan8[0] + 4 - 1*8]);
                 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
             }
+            if(h->ref_cache[list][scan8[0] + 4 - 1*8] < 0){
+                if(USES_LIST(topleft_type, list)){
+                    const int b_xy = h->mb2b_xy [topleft_xy] + 3 + h->b_stride + (h->topleft_partition & 2*h->b_stride);
+                    const int b8_xy= 4*topleft_xy + 1 + (h->topleft_partition & 2);
+                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 - 1*8], s->current_picture.motion_val[list][b_xy]);
+                    h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
+                }else{
+                    AV_ZERO32(h->mv_cache[list][scan8[0] - 1 - 1*8]);
+                    h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+                }
+            }
 
-            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
+            if((mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2)) && !FRAME_MBAFF)
                 continue;
 
-            h->ref_cache[list][scan8[5 ]+1] =
-            h->ref_cache[list][scan8[7 ]+1] =
-            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
+            if(!(mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2))) {
             h->ref_cache[list][scan8[4 ]] =
             h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
-            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
-            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
-            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
-            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
-            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
+            AV_ZERO32(h->mv_cache [list][scan8[4 ]]);
+            AV_ZERO32(h->mv_cache [list][scan8[12]]);
 
             if( CABAC ) {
                 /* XXX beurk, Load mvd */
                 if(USES_LIST(top_type, list)){
-                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
+                    const int b_xy= h->mb2br_xy[top_xy];
+                    AV_COPY64(h->mvd_cache[list][scan8[0] + 0 - 1*8], h->mvd_table[list][b_xy + 0]);
                 }else{
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
+                    AV_ZERO64(h->mvd_cache[list][scan8[0] + 0 - 1*8]);
                 }
                 if(USES_LIST(left_type[0], list)){
-                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
+                    const int b_xy= h->mb2br_xy[left_xy[0]] + 6;
+                    AV_COPY16(h->mvd_cache[list][scan8[0] - 1 + 0*8], h->mvd_table[list][b_xy - left_block[0]]);
+                    AV_COPY16(h->mvd_cache[list][scan8[0] - 1 + 1*8], h->mvd_table[list][b_xy - left_block[1]]);
                 }else{
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
+                    AV_ZERO16(h->mvd_cache [list][scan8[0] - 1 + 0*8]);
+                    AV_ZERO16(h->mvd_cache [list][scan8[0] - 1 + 1*8]);
                 }
                 if(USES_LIST(left_type[1], list)){
-                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
-                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
+                    const int b_xy= h->mb2br_xy[left_xy[1]] + 6;
+                    AV_COPY16(h->mvd_cache[list][scan8[0] - 1 + 2*8], h->mvd_table[list][b_xy - left_block[2]]);
+                    AV_COPY16(h->mvd_cache[list][scan8[0] - 1 + 3*8], h->mvd_table[list][b_xy - left_block[3]]);
                 }else{
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
-                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
+                    AV_ZERO16(h->mvd_cache [list][scan8[0] - 1 + 2*8]);
+                    AV_ZERO16(h->mvd_cache [list][scan8[0] - 1 + 3*8]);
                 }
-                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
-                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
-                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
-                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
-                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
-
+                AV_ZERO16(h->mvd_cache [list][scan8[4 ]]);
+                AV_ZERO16(h->mvd_cache [list][scan8[12]]);
                 if(h->slice_type_nos == FF_B_TYPE){
-                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
+                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, MB_TYPE_16x16>>1, 1);
 
                     if(IS_DIRECT(top_type)){
-                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
+                        AV_WN32A(&h->direct_cache[scan8[0] - 1*8], 0x01010101u*(MB_TYPE_DIRECT2>>1));
                     }else if(IS_8X8(top_type)){
-                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
-                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
-                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
+                        int b8_xy = 4*top_xy;
+                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy + 2];
+                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 3];
                     }else{
-                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
+                        AV_WN32A(&h->direct_cache[scan8[0] - 1*8], 0x01010101*(MB_TYPE_16x16>>1));
                     }
 
                     if(IS_DIRECT(left_type[0]))
-                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
+                        h->direct_cache[scan8[0] - 1 + 0*8]= MB_TYPE_DIRECT2>>1;
                     else if(IS_8X8(left_type[0]))
-                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
+                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[4*left_xy[0] + 1 + (left_block[0]&~1)];
                     else
-                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;
+                        h->direct_cache[scan8[0] - 1 + 0*8]= MB_TYPE_16x16>>1;
 
                     if(IS_DIRECT(left_type[1]))
-                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
+                        h->direct_cache[scan8[0] - 1 + 2*8]= MB_TYPE_DIRECT2>>1;
                     else if(IS_8X8(left_type[1]))
-                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
+                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[4*left_xy[1] + 1 + (left_block[2]&~1)];
                     else
-                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
+                        h->direct_cache[scan8[0] - 1 + 2*8]= MB_TYPE_16x16>>1;
                 }
             }
-
+            }
             if(FRAME_MBAFF){
 #define MAP_MVS\
                     MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
@@ -1234,7 +1143,7 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                     if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
                         h->ref_cache[list][idx] <<= 1;\
                         h->mv_cache[list][idx][1] /= 2;\
-                        h->mvd_cache[list][idx][1] /= 2;\
+                        h->mvd_cache[list][idx][1] >>=1;\
                     }
                     MAP_MVS
 #undef MAP_F2F
@@ -1253,21 +1162,7 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
     }
 #endif
 
-    if(!for_deblock)
-    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
-    return 0;
-}
-
-static void fill_decode_caches(H264Context *h, int mb_type){
-    fill_caches(h, mb_type, 0);
-}
-
-/**
- *
- * @returns non zero if the loop filter can be skiped
- */
-static int fill_filter_caches(H264Context *h, int mb_type){
-    return fill_caches(h, mb_type, 1);
+        h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
 }
 
 /**
@@ -1288,76 +1183,73 @@ static inline int pred_intra_mode(H264Context *h, int n){
 static inline void write_back_non_zero_count(H264Context *h){
     const int mb_xy= h->mb_xy;
 
-    *((uint64_t*)&h->non_zero_count[mb_xy][ 0]) = *((uint64_t*)&h->non_zero_count_cache[0+8*1]);
-    *((uint64_t*)&h->non_zero_count[mb_xy][ 8]) = *((uint64_t*)&h->non_zero_count_cache[0+8*2]);
-    *((uint32_t*)&h->non_zero_count[mb_xy][16]) = *((uint32_t*)&h->non_zero_count_cache[0+8*5]);
-    *((uint32_t*)&h->non_zero_count[mb_xy][20]) = *((uint32_t*)&h->non_zero_count_cache[4+8*3]);
-    *((uint64_t*)&h->non_zero_count[mb_xy][24]) = *((uint64_t*)&h->non_zero_count_cache[0+8*4]);
+    AV_COPY64(&h->non_zero_count[mb_xy][ 0], &h->non_zero_count_cache[0+8*1]);
+    AV_COPY64(&h->non_zero_count[mb_xy][ 8], &h->non_zero_count_cache[0+8*2]);
+    AV_COPY32(&h->non_zero_count[mb_xy][16], &h->non_zero_count_cache[0+8*5]);
+    AV_COPY32(&h->non_zero_count[mb_xy][20], &h->non_zero_count_cache[4+8*3]);
+    AV_COPY64(&h->non_zero_count[mb_xy][24], &h->non_zero_count_cache[0+8*4]);
 }
 
 static inline void write_back_motion(H264Context *h, int mb_type){
     MpegEncContext * const s = &h->s;
-    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
-    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
+    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride; //try mb2b(8)_xy
+    const int b8_xy= 4*h->mb_xy;
     int list;
 
     if(!USES_LIST(mb_type, 0))
-        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
+        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
 
     for(list=0; list<h->list_count; list++){
-        int y;
+        int y, b_stride;
+        int16_t (*mv_dst)[2];
+        int16_t (*mv_src)[2];
+
         if(!USES_LIST(mb_type, list))
             continue;
 
+        b_stride = h->b_stride;
+        mv_dst   = &s->current_picture.motion_val[list][b_xy];
+        mv_src   = &h->mv_cache[list][scan8[0]];
         for(y=0; y<4; y++){
-            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
-            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
+            AV_COPY128(mv_dst + y*b_stride, mv_src + 8*y);
         }
         if( CABAC ) {
+            uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8*h->mb_xy : h->mb2br_xy[h->mb_xy]];
+            uint8_t (*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
             if(IS_SKIP(mb_type))
-                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
-            else
-            for(y=0; y<4; y++){
-                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
-                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
+                AV_ZERO128(mvd_dst);
+            else{
+            AV_COPY64(mvd_dst, mvd_src + 8*3);
+                AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8*0);
+                AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8*1);
+                AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8*2);
             }
         }
 
         {
             int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
-            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
-            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
-            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
-            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
+            ref_index[0+0*2]= h->ref_cache[list][scan8[0]];
+            ref_index[1+0*2]= h->ref_cache[list][scan8[4]];
+            ref_index[0+1*2]= h->ref_cache[list][scan8[8]];
+            ref_index[1+1*2]= h->ref_cache[list][scan8[12]];
         }
     }
 
     if(h->slice_type_nos == FF_B_TYPE && CABAC){
         if(IS_8X8(mb_type)){
-            uint8_t *direct_table = &h->direct_table[b8_xy];
-            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
-            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
-            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
+            uint8_t *direct_table = &h->direct_table[4*h->mb_xy];
+            direct_table[1] = h->sub_mb_type[1]>>1;
+            direct_table[2] = h->sub_mb_type[2]>>1;
+            direct_table[3] = h->sub_mb_type[3]>>1;
         }
     }
 }
 
 static inline int get_dct8x8_allowed(H264Context *h){
     if(h->sps.direct_8x8_inference_flag)
-        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8                )*0x0001000100010001ULL));
+        return !(AV_RN64A(h->sub_mb_type) & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8                )*0x0001000100010001ULL));
     else
-        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
-}
-
-static void predict_field_decoding_flag(H264Context *h){
-    MpegEncContext * const s = &h->s;
-    const int mb_xy= h->mb_xy;
-    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
-                ? s->current_picture.mb_type[mb_xy-1]
-                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
-                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
-                : 0;
-    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
+        return !(AV_RN64A(h->sub_mb_type) & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
 }
 
 /**
@@ -1377,9 +1269,11 @@ static void decode_mb_skip(H264Context *h){
     if( h->slice_type_nos == FF_B_TYPE )
     {
         // just for fill_caches. pred_direct_motion will set the real mb_type
-        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
-
+        mb_type|= MB_TYPE_L0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
+        if(h->direct_spatial_mv_pred){
+            fill_decode_neighbors(h, mb_type);
         fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
+        }
         ff_h264_pred_direct_motion(h, &mb_type);
         mb_type|= MB_TYPE_SKIP;
     }
@@ -1388,6 +1282,7 @@ static void decode_mb_skip(H264Context *h){
         int mx, my;
         mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
 
+        fill_decode_neighbors(h, mb_type);
         fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
         pred_pskip_motion(h, &mx, &my);
         fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);