LCOV - code coverage report
Current view: top level - libavcodec - snow.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 292 309 94.5 %
Date: 2017-12-18 06:23:41 Functions: 15 15 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
       3             :  * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #ifndef AVCODEC_SNOW_H
      23             : #define AVCODEC_SNOW_H
      24             : 
      25             : #include "libavutil/motion_vector.h"
      26             : 
      27             : #include "hpeldsp.h"
      28             : #include "me_cmp.h"
      29             : #include "qpeldsp.h"
      30             : #include "snow_dwt.h"
      31             : 
      32             : #include "rangecoder.h"
      33             : #include "mathops.h"
      34             : 
      35             : #include "mpegvideo.h"
      36             : #include "h264qpel.h"
      37             : 
      38             : #define FF_ME_ITER 3
      39             : 
      40             : #define MID_STATE 128
      41             : 
      42             : #define MAX_PLANES 4
      43             : #define QSHIFT 5
      44             : #define QROOT (1<<QSHIFT)
      45             : #define LOSSLESS_QLOG -128
      46             : #define FRAC_BITS 4
      47             : #define MAX_REF_FRAMES 8
      48             : 
      49             : #define LOG2_OBMC_MAX 8
      50             : #define OBMC_MAX (1<<(LOG2_OBMC_MAX))
      51             : typedef struct BlockNode{
      52             :     int16_t mx;                 ///< Motion vector component X, see mv_scale
      53             :     int16_t my;                 ///< Motion vector component Y, see mv_scale
      54             :     uint8_t ref;                ///< Reference frame index
      55             :     uint8_t color[3];           ///< Color for intra
      56             :     uint8_t type;               ///< Bitfield of BLOCK_*
      57             : //#define TYPE_SPLIT    1
      58             : #define BLOCK_INTRA   1         ///< Intra block, inter otherwise
      59             : #define BLOCK_OPT     2         ///< Block needs no checks in this round of iterative motion estiation
      60             : //#define TYPE_NOCOLOR  4
      61             :     uint8_t level; //FIXME merge into type?
      62             : }BlockNode;
      63             : 
      64             : static const BlockNode null_block= { //FIXME add border maybe
      65             :     .color= {128,128,128},
      66             :     .mx= 0,
      67             :     .my= 0,
      68             :     .ref= 0,
      69             :     .type= 0,
      70             :     .level= 0,
      71             : };
      72             : 
      73             : #define LOG2_MB_SIZE 4
      74             : #define MB_SIZE (1<<LOG2_MB_SIZE)
      75             : #define ENCODER_EXTRA_BITS 4
      76             : #define HTAPS_MAX 8
      77             : 
      78             : typedef struct x_and_coeff{
      79             :     int16_t x;
      80             :     uint16_t coeff;
      81             : } x_and_coeff;
      82             : 
      83             : typedef struct SubBand{
      84             :     int level;
      85             :     int stride;
      86             :     int width;
      87             :     int height;
      88             :     int qlog;        ///< log(qscale)/log[2^(1/6)]
      89             :     DWTELEM *buf;
      90             :     IDWTELEM *ibuf;
      91             :     int buf_x_offset;
      92             :     int buf_y_offset;
      93             :     int stride_line; ///< Stride measured in lines, not pixels.
      94             :     x_and_coeff * x_coeff;
      95             :     struct SubBand *parent;
      96             :     uint8_t state[/*7*2*/ 7 + 512][32];
      97             : }SubBand;
      98             : 
      99             : typedef struct Plane{
     100             :     int width;
     101             :     int height;
     102             :     SubBand band[MAX_DECOMPOSITIONS][4];
     103             : 
     104             :     int htaps;
     105             :     int8_t hcoeff[HTAPS_MAX/2];
     106             :     int diag_mc;
     107             :     int fast_mc;
     108             : 
     109             :     int last_htaps;
     110             :     int8_t last_hcoeff[HTAPS_MAX/2];
     111             :     int last_diag_mc;
     112             : }Plane;
     113             : 
     114             : typedef struct SnowContext{
     115             :     AVClass *class;
     116             :     AVCodecContext *avctx;
     117             :     RangeCoder c;
     118             :     MECmpContext mecc;
     119             :     HpelDSPContext hdsp;
     120             :     QpelDSPContext qdsp;
     121             :     VideoDSPContext vdsp;
     122             :     H264QpelContext h264qpel;
     123             :     MpegvideoEncDSPContext mpvencdsp;
     124             :     SnowDWTContext dwt;
     125             :     AVFrame *input_picture;              ///< new_picture with the internal linesizes
     126             :     AVFrame *current_picture;
     127             :     AVFrame *last_picture[MAX_REF_FRAMES];
     128             :     uint8_t *halfpel_plane[MAX_REF_FRAMES][4][4];
     129             :     AVFrame *mconly_picture;
     130             : //     uint8_t q_context[16];
     131             :     uint8_t header_state[32];
     132             :     uint8_t block_state[128 + 32*128];
     133             :     int keyframe;
     134             :     int always_reset;
     135             :     int version;
     136             :     int spatial_decomposition_type;
     137             :     int last_spatial_decomposition_type;
     138             :     int temporal_decomposition_type;
     139             :     int spatial_decomposition_count;
     140             :     int last_spatial_decomposition_count;
     141             :     int temporal_decomposition_count;
     142             :     int max_ref_frames;
     143             :     int ref_frames;
     144             :     int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
     145             :     uint32_t *ref_scores[MAX_REF_FRAMES];
     146             :     DWTELEM *spatial_dwt_buffer;
     147             :     DWTELEM *temp_dwt_buffer;
     148             :     IDWTELEM *spatial_idwt_buffer;
     149             :     IDWTELEM *temp_idwt_buffer;
     150             :     int *run_buffer;
     151             :     int colorspace_type;
     152             :     int chroma_h_shift;
     153             :     int chroma_v_shift;
     154             :     int spatial_scalability;
     155             :     int qlog;
     156             :     int last_qlog;
     157             :     int lambda;
     158             :     int lambda2;
     159             :     int pass1_rc;
     160             :     int mv_scale;
     161             :     int last_mv_scale;
     162             :     int qbias;
     163             :     int last_qbias;
     164             : #define QBIAS_SHIFT 3
     165             :     int b_width;
     166             :     int b_height;
     167             :     int block_max_depth;
     168             :     int last_block_max_depth;
     169             :     int nb_planes;
     170             :     Plane plane[MAX_PLANES];
     171             :     BlockNode *block;
     172             : #define ME_CACHE_SIZE 1024
     173             :     unsigned me_cache[ME_CACHE_SIZE];
     174             :     unsigned me_cache_generation;
     175             :     slice_buffer sb;
     176             :     int memc_only;
     177             :     int no_bitstream;
     178             :     int intra_penalty;
     179             :     int motion_est;
     180             :     int iterative_dia_size;
     181             :     int scenechange_threshold;
     182             : 
     183             :     MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to eventually make the motion estimation independent of MpegEncContext, so this will be removed then (FIXME/XXX)
     184             : 
     185             :     uint8_t *scratchbuf;
     186             :     uint8_t *emu_edge_buffer;
     187             : 
     188             :     AVMotionVector *avmv;
     189             :     int avmv_index;
     190             :     uint64_t encoding_error[AV_NUM_DATA_POINTERS];
     191             : 
     192             :     int pred;
     193             : }SnowContext;
     194             : 
     195             : /* Tables */
     196             : extern const uint8_t * const ff_obmc_tab[4];
     197             : extern uint8_t ff_qexp[QROOT];
     198             : extern int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES];
     199             : 
     200             : /* C bits used by mmx/sse2/altivec */
     201             : 
     202         248 : static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
     203         248 :     (*i) = (width) - 2;
     204             : 
     205         248 :     if (width & 1){
     206           0 :         low[(*i)+1] = low[((*i)+1)>>1];
     207           0 :         (*i)--;
     208             :     }
     209         248 : }
     210             : 
     211             : static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
     212             :     for (; (*i)>=0; (*i)-=2){
     213             :         low[(*i)+1] = high[(*i)>>1];
     214             :         low[*i] = low[(*i)>>1];
     215             :     }
     216             : }
     217             : 
     218         744 : static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
     219        5736 :     for(; i<w; i++){
     220        4992 :         dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
     221             :     }
     222             : 
     223         744 :     if((width^lift_high)&1){
     224         496 :         dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
     225             :     }
     226         744 : }
     227             : 
     228         248 : static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){
     229        1912 :         for(; i<w; i++){
     230        1664 :             dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
     231             :         }
     232             : 
     233         248 :         if(width&1){
     234           0 :             dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
     235             :         }
     236         248 : }
     237             : 
     238             : /* common code */
     239             : 
     240             : int ff_snow_common_init(AVCodecContext *avctx);
     241             : int ff_snow_common_init_after_header(AVCodecContext *avctx);
     242             : void ff_snow_common_end(SnowContext *s);
     243             : void ff_snow_release_buffer(AVCodecContext *avctx);
     244             : void ff_snow_reset_contexts(SnowContext *s);
     245             : int ff_snow_alloc_blocks(SnowContext *s);
     246             : int ff_snow_frame_start(SnowContext *s);
     247             : void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride,
     248             :                      int sx, int sy, int b_w, int b_h, const BlockNode *block,
     249             :                      int plane_index, int w, int h);
     250             : int ff_snow_get_buffer(SnowContext *s, AVFrame *frame);
     251             : /* common inline functions */
     252             : //XXX doublecheck all of them should stay inlined
     253             : 
     254     1929234 : static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
     255             :                            const BlockNode *left, const BlockNode *top, const BlockNode *tr){
     256     1929234 :     if(s->ref_frames == 1){
     257     1929234 :         *mx = mid_pred(left->mx, top->mx, tr->mx);
     258     1929234 :         *my = mid_pred(left->my, top->my, tr->my);
     259             :     }else{
     260           0 :         const int *scale = ff_scale_mv_ref[ref];
     261           0 :         *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
     262           0 :                        (top ->mx * scale[top ->ref] + 128) >>8,
     263           0 :                        (tr  ->mx * scale[tr  ->ref] + 128) >>8);
     264           0 :         *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
     265           0 :                        (top ->my * scale[top ->ref] + 128) >>8,
     266           0 :                        (tr  ->my * scale[tr  ->ref] + 128) >>8);
     267             :     }
     268     1929234 : }
     269             : 
     270    16154666 : static av_always_inline int same_block(BlockNode *a, BlockNode *b){
     271    16154666 :     if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
     272     1029339 :         return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
     273             :     }else{
     274    15125327 :         return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
     275             :     }
     276             : }
     277             : 
     278             : //FIXME name cleanup (b_w, block_w, b_width stuff)
     279             : //XXX should we really inline it?
     280     3083760 : static av_always_inline void add_yblock(SnowContext *s, int sliced, slice_buffer *sb, IDWTELEM *dst, uint8_t *dst8, const uint8_t *obmc, int src_x, int src_y, int b_w, int b_h, int w, int h, int dst_stride, int src_stride, int obmc_stride, int b_x, int b_y, int add, int offset_dst, int plane_index){
     281     3083760 :     const int b_width = s->b_width  << s->block_max_depth;
     282     3083760 :     const int b_height= s->b_height << s->block_max_depth;
     283     3083760 :     const int b_stride= b_width;
     284     3083760 :     BlockNode *lt= &s->block[b_x + b_y*b_stride];
     285     3083760 :     BlockNode *rt= lt+1;
     286     3083760 :     BlockNode *lb= lt+b_stride;
     287     3083760 :     BlockNode *rb= lb+1;
     288             :     uint8_t *block[4];
     289             :     // When src_stride is large enough, it is possible to interleave the blocks.
     290             :     // Otherwise the blocks are written sequentially in the tmp buffer.
     291     3083760 :     int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
     292     3083760 :     uint8_t *tmp = s->scratchbuf;
     293             :     uint8_t *ptmp;
     294             :     int x,y;
     295             : 
     296     3083760 :     if(b_x<0){
     297       80121 :         lt= rt;
     298       80121 :         lb= rb;
     299     3003639 :     }else if(b_x + 1 >= b_width){
     300       77757 :         rt= lt;
     301       77757 :         rb= lb;
     302             :     }
     303     3083760 :     if(b_y<0){
     304      118404 :         lt= lb;
     305      118404 :         rt= rb;
     306     2965356 :     }else if(b_y + 1 >= b_height){
     307      110604 :         lb= lt;
     308      110604 :         rb= rt;
     309             :     }
     310             : 
     311     3083760 :     if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
     312       80121 :         obmc -= src_x;
     313       80121 :         b_w += src_x;
     314       80121 :         if(!sliced && !offset_dst)
     315       13446 :             dst -= src_x;
     316       80121 :         src_x=0;
     317             :     }
     318     3083760 :     if(src_x + b_w > w){
     319       77757 :         b_w = w - src_x;
     320             :     }
     321     3083760 :     if(src_y<0){
     322      118404 :         obmc -= src_y*obmc_stride;
     323      118404 :         b_h += src_y;
     324      118404 :         if(!sliced && !offset_dst)
     325       29940 :             dst -= src_y*dst_stride;
     326      118404 :         src_y=0;
     327             :     }
     328     3083760 :     if(src_y + b_h> h){
     329      110604 :         b_h = h - src_y;
     330             :     }
     331             : 
     332     3083760 :     if(b_w<=0 || b_h<=0) return;
     333             : 
     334     3083760 :     if(!sliced && offset_dst)
     335     2147565 :         dst += src_x + src_y*dst_stride;
     336     3083760 :     dst8+= src_x + src_y*src_stride;
     337             : //    src += src_x + src_y*src_stride;
     338             : 
     339     3083760 :     ptmp= tmp + 3*tmp_step;
     340     3083760 :     block[0]= ptmp;
     341     3083760 :     ptmp+=tmp_step;
     342     3083760 :     ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
     343             : 
     344     3083760 :     if(same_block(lt, rt)){
     345      846045 :         block[1]= block[0];
     346             :     }else{
     347     2237715 :         block[1]= ptmp;
     348     2237715 :         ptmp+=tmp_step;
     349     2237715 :         ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
     350             :     }
     351             : 
     352     3083760 :     if(same_block(lt, lb)){
     353      874290 :         block[2]= block[0];
     354     2209470 :     }else if(same_block(rt, lb)){
     355      209016 :         block[2]= block[1];
     356             :     }else{
     357     2000454 :         block[2]= ptmp;
     358     2000454 :         ptmp+=tmp_step;
     359     2000454 :         ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
     360             :     }
     361             : 
     362     3083760 :     if(same_block(lt, rb) ){
     363      481812 :         block[3]= block[0];
     364     2601948 :     }else if(same_block(rt, rb)){
     365      528765 :         block[3]= block[1];
     366     2073183 :     }else if(same_block(lb, rb)){
     367      396654 :         block[3]= block[2];
     368             :     }else{
     369     1676529 :         block[3]= ptmp;
     370     1676529 :         ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
     371             :     }
     372     3083760 :     if(sliced){
     373      710775 :         s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
     374             :     }else{
     375    16697081 :         for(y=0; y<b_h; y++){
     376             :             //FIXME ugly misuse of obmc_stride
     377    14324096 :             const uint8_t *obmc1= obmc + y*obmc_stride;
     378    14324096 :             const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
     379    14324096 :             const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
     380    14324096 :             const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
     381   122225888 :             for(x=0; x<b_w; x++){
     382   215803584 :                 int v=   obmc1[x] * block[3][x + y*src_stride]
     383   107901792 :                         +obmc2[x] * block[2][x + y*src_stride]
     384   107901792 :                         +obmc3[x] * block[1][x + y*src_stride]
     385   107901792 :                         +obmc4[x] * block[0][x + y*src_stride];
     386             : 
     387   107901792 :                 v <<= 8 - LOG2_OBMC_MAX;
     388             :                 if(FRAC_BITS != 8){
     389   107901792 :                     v >>= 8 - FRAC_BITS;
     390             :                 }
     391   107901792 :                 if(add){
     392    59927040 :                     v += dst[x + y*dst_stride];
     393    59927040 :                     v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
     394    59927040 :                     if(v&(~255)) v= ~(v>>31);
     395    59927040 :                     dst8[x + y*src_stride] = v;
     396             :                 }else{
     397    47974752 :                     dst[x + y*dst_stride] -= v;
     398             :                 }
     399             :             }
     400             :         }
     401             :     }
     402             : }
     403             : 
     404       51870 : static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
     405       51870 :     Plane *p= &s->plane[plane_index];
     406       51870 :     const int mb_w= s->b_width  << s->block_max_depth;
     407       51870 :     const int mb_h= s->b_height << s->block_max_depth;
     408             :     int x, y, mb_x;
     409       51870 :     int block_size = MB_SIZE >> s->block_max_depth;
     410       51870 :     int block_w    = plane_index ? block_size>>s->chroma_h_shift : block_size;
     411       51870 :     int block_h    = plane_index ? block_size>>s->chroma_v_shift : block_size;
     412       51870 :     const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
     413       51870 :     const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
     414       51870 :     int ref_stride= s->current_picture->linesize[plane_index];
     415       51870 :     uint8_t *dst8= s->current_picture->data[plane_index];
     416       51870 :     int w= p->width;
     417       51870 :     int h= p->height;
     418             :     av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
     419       51870 :     if(s->keyframe || (s->avctx->debug&512)){
     420        4230 :         if(mb_y==mb_h)
     421         270 :             return;
     422             : 
     423        3960 :         if(add){
     424       14460 :             for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
     425     2662080 :                 for(x=0; x<w; x++){
     426     2649600 :                     int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
     427     2649600 :                     v >>= FRAC_BITS;
     428     2649600 :                     if(v&(~255)) v= ~(v>>31);
     429     2649600 :                     dst8[x + y*ref_stride]= v;
     430             :                 }
     431             :             }
     432             :         }else{
     433       14460 :             for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
     434     2662080 :                 for(x=0; x<w; x++){
     435     2649600 :                     buf[x + y*w]-= 128<<FRAC_BITS;
     436             :                 }
     437             :             }
     438             :         }
     439             : 
     440        3960 :         return;
     441             :     }
     442             : 
     443     2195205 :     for(mb_x=0; mb_x<=mb_w; mb_x++){
     444     6442695 :         add_yblock(s, 0, NULL, buf, dst8, obmc,
     445     2147565 :                    block_w*mb_x - block_w/2,
     446     2147565 :                    block_h*mb_y - block_h/2,
     447             :                    block_w, block_h,
     448             :                    w, h,
     449             :                    w, ref_stride, obmc_stride,
     450             :                    mb_x - 1, mb_y - 1,
     451             :                    add, 1, plane_index);
     452             :     }
     453             : }
     454             : 
     455        2874 : static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
     456        2874 :     const int mb_h= s->b_height << s->block_max_depth;
     457             :     int mb_y;
     458       54744 :     for(mb_y=0; mb_y<=mb_h; mb_y++)
     459       51870 :         predict_slice(s, buf, plane_index, add, mb_y);
     460        2874 : }
     461             : 
     462      693840 : static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){
     463      693840 :     const int w= s->b_width << s->block_max_depth;
     464      693840 :     const int rem_depth= s->block_max_depth - level;
     465      693840 :     const int index= (x + y*w) << rem_depth;
     466      693840 :     const int block_w= 1<<rem_depth;
     467      693840 :     const int block_h= 1<<rem_depth; //FIXME "w!=h"
     468             :     BlockNode block;
     469             :     int i,j;
     470             : 
     471      693840 :     block.color[0]= l;
     472      693840 :     block.color[1]= cb;
     473      693840 :     block.color[2]= cr;
     474      693840 :     block.mx= mx;
     475      693840 :     block.my= my;
     476      693840 :     block.ref= ref;
     477      693840 :     block.type= type;
     478      693840 :     block.level= level;
     479             : 
     480     1423044 :     for(j=0; j<block_h; j++){
     481     1529136 :         for(i=0; i<block_w; i++){
     482      799932 :             s->block[index + i + j*w]= block;
     483             :         }
     484             :     }
     485      693840 : }
     486             : 
     487      557820 : static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){
     488      557820 :     SnowContext *s = c->avctx->priv_data;
     489     1673460 :     const int offset[3]= {
     490      557820 :           y*c->  stride + x,
     491      557820 :         ((y*c->uvstride + x)>>s->chroma_h_shift),
     492      557820 :         ((y*c->uvstride + x)>>s->chroma_h_shift),
     493             :     };
     494             :     int i;
     495     2231280 :     for(i=0; i<3; i++){
     496     1673460 :         c->src[0][i]= src [i];
     497     1673460 :         c->ref[0][i]= ref [i] + offset[i];
     498             :     }
     499             :     av_assert2(!ref_index);
     500      557820 : }
     501             : 
     502             : 
     503             : /* bitstream functions */
     504             : 
     505             : extern const int8_t ff_quant3bA[256];
     506             : 
     507             : #define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
     508             : 
     509     2810756 : static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
     510             :     int i;
     511             : 
     512     2810756 :     if(v){
     513     2212471 :         const int a= FFABS(v);
     514     2212471 :         const int e= av_log2(a);
     515     2212471 :         const int el= FFMIN(e, 10);
     516     2212471 :         put_rac(c, state+0, 0);
     517             : 
     518     7534162 :         for(i=0; i<el; i++){
     519     5321691 :             put_rac(c, state+1+i, 1);  //1..10
     520             :         }
     521     2212471 :         for(; i<e; i++){
     522           0 :             put_rac(c, state+1+9, 1);  //1..10
     523             :         }
     524     2212471 :         put_rac(c, state+1+FFMIN(i,9), 0);
     525             : 
     526     2212471 :         for(i=e-1; i>=el; i--){
     527           0 :             put_rac(c, state+22+9, (a>>i)&1); //22..31
     528             :         }
     529     7534162 :         for(; i>=0; i--){
     530     5321691 :             put_rac(c, state+22+i, (a>>i)&1); //22..31
     531             :         }
     532             : 
     533     2212471 :         if(is_signed)
     534     2212048 :             put_rac(c, state+11 + el, v < 0); //11..21
     535             :     }else{
     536      598285 :         put_rac(c, state+0, 1);
     537             :     }
     538     2810756 : }
     539             : 
     540      398667 : static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
     541      398667 :     if(get_rac(c, state+0))
     542      181336 :         return 0;
     543             :     else{
     544             :         int i, e;
     545             :         unsigned a;
     546      217331 :         e= 0;
     547      613763 :         while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
     548      179101 :             e++;
     549      179101 :             if (e > 31)
     550           0 :                 return AVERROR_INVALIDDATA;
     551             :         }
     552             : 
     553      217331 :         a= 1;
     554      396432 :         for(i=e-1; i>=0; i--){
     555      179101 :             a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
     556             :         }
     557             : 
     558      217331 :         e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
     559      217331 :         return (a^e)-e;
     560             :     }
     561             : }
     562             : 
     563    16306397 : static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
     564             :     int i;
     565    16306397 :     int r= log2>=0 ? 1<<log2 : 1;
     566             : 
     567             :     av_assert2(v>=0);
     568             :     av_assert2(log2>=-4);
     569             : 
     570    44505367 :     while(v >= r){
     571    11892573 :         put_rac(c, state+4+log2, 1);
     572    11892573 :         v -= r;
     573    11892573 :         log2++;
     574    11892573 :         if(log2>0) r+=r;
     575             :     }
     576    16306397 :     put_rac(c, state+4+log2, 0);
     577             : 
     578    32945372 :     for(i=log2-1; i>=0; i--){
     579    16638975 :         put_rac(c, state+31-i, (v>>i)&1);
     580             :     }
     581    16306397 : }
     582             : 
     583    16813073 : static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
     584             :     int i;
     585    16813073 :     int r= log2>=0 ? 1<<log2 : 1;
     586    16813073 :     int v=0;
     587             : 
     588             :     av_assert2(log2>=-4);
     589             : 
     590    45985060 :     while(log2<28 && get_rac(c, state+4+log2)){
     591    12358914 :         v+= r;
     592    12358914 :         log2++;
     593    12358914 :         if(log2>0) r+=r;
     594             :     }
     595             : 
     596    34324391 :     for(i=log2-1; i>=0; i--){
     597    17511318 :         v+= get_rac(c, state+31-i)<<i;
     598             :     }
     599             : 
     600    16813073 :     return v;
     601             : }
     602             : 
     603       22128 : static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
     604       22128 :     const int w= b->width;
     605       22128 :     const int h= b->height;
     606             :     int x,y;
     607             : 
     608             :     int run, runs;
     609       22128 :     x_and_coeff *xc= b->x_coeff;
     610       22128 :     x_and_coeff *prev_xc= NULL;
     611       22128 :     x_and_coeff *prev2_xc= xc;
     612       22128 :     x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
     613       22128 :     x_and_coeff *prev_parent_xc= parent_xc;
     614             : 
     615       22128 :     runs= get_symbol2(&s->c, b->state[30], 0);
     616       22128 :     if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
     617        4892 :     else           run= INT_MAX;
     618             : 
     619      398128 :     for(y=0; y<h; y++){
     620      376000 :         int v=0;
     621      376000 :         int lt=0, t=0, rt=0;
     622             : 
     623      376000 :         if(y && prev_xc->x == 0){
     624      214402 :             rt= prev_xc->coeff;
     625             :         }
     626    25581367 :         for(x=0; x<w; x++){
     627    25205367 :             int p=0;
     628    25205367 :             const int l= v;
     629             : 
     630    25205367 :             lt= t; t= rt;
     631             : 
     632    25205367 :             if(y){
     633    24753695 :                 if(prev_xc->x <= x)
     634    16207850 :                     prev_xc++;
     635    24753695 :                 if(prev_xc->x == x + 1)
     636    15993448 :                     rt= prev_xc->coeff;
     637             :                 else
     638     8760247 :                     rt=0;
     639             :             }
     640    25205367 :             if(parent_xc){
     641    25101348 :                 if(x>>1 > parent_xc->x){
     642     8437610 :                     parent_xc++;
     643             :                 }
     644    25101348 :                 if(x>>1 == parent_xc->x){
     645    17312556 :                     p= parent_xc->coeff;
     646             :                 }
     647             :             }
     648    25205367 :             if(/*ll|*/l|lt|t|rt|p){
     649    24345882 :                 int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
     650             : 
     651    24345882 :                 v=get_rac(&s->c, &b->state[0][context]);
     652    24345882 :                 if(v){
     653    16203935 :                     v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
     654    16203935 :                     v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
     655    16203935 :                     if ((uint16_t)v != v) {
     656           0 :                         av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
     657           0 :                         v = 1;
     658             :                     }
     659    16203935 :                     xc->x=x;
     660    16203935 :                     (xc++)->coeff= v;
     661             :                 }
     662             :             }else{
     663      859485 :                 if(!run){
     664      293505 :                     if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
     665       17236 :                     else           run= INT_MAX;
     666      293505 :                     v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
     667      293505 :                     v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
     668      293505 :                     if ((uint16_t)v != v) {
     669           0 :                         av_log(s->avctx, AV_LOG_ERROR, "Coefficient damaged\n");
     670           0 :                         v = 1;
     671             :                     }
     672             : 
     673      293505 :                     xc->x=x;
     674      293505 :                     (xc++)->coeff= v;
     675             :                 }else{
     676             :                     int max_run;
     677      565980 :                     run--;
     678      565980 :                     v=0;
     679             :                     av_assert2(run >= 0);
     680      565980 :                     if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
     681       31562 :                     else  max_run= FFMIN(run, w-x-1);
     682      565980 :                     if(parent_xc)
     683      562134 :                         max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
     684             :                     av_assert2(max_run >= 0 && max_run <= run);
     685             : 
     686      565980 :                     x+= max_run;
     687      565980 :                     run-= max_run;
     688             :                 }
     689             :             }
     690             :         }
     691      376000 :         (xc++)->x= w+1; //end marker
     692      376000 :         prev_xc= prev2_xc;
     693      376000 :         prev2_xc= xc;
     694             : 
     695      376000 :         if(parent_xc){
     696      360000 :             if(y&1){
     697      468818 :                 while(parent_xc->x != parent->width+1)
     698      109742 :                     parent_xc++;
     699      179538 :                 parent_xc++;
     700      179538 :                 prev_parent_xc= parent_xc;
     701             :             }else{
     702      180462 :                 parent_xc= prev_parent_xc;
     703             :             }
     704             :         }
     705             :     }
     706             : 
     707       22128 :     (xc++)->x= w+1; //end marker
     708       22128 : }
     709             : 
     710             : #endif /* AVCODEC_SNOW_H */

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