From 22e28216336da876e1fd17f380ce42eaf1446769 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Mon, 17 Feb 2014 13:36:38 +0000
Subject: chasing indexing error

---
 ffmpeg/libavcodec/snow.h | 704 -----------------------------------------------
 1 file changed, 704 deletions(-)
 delete mode 100644 ffmpeg/libavcodec/snow.h

(limited to 'ffmpeg/libavcodec/snow.h')

diff --git a/ffmpeg/libavcodec/snow.h b/ffmpeg/libavcodec/snow.h
deleted file mode 100644
index 1222a77..0000000
--- a/ffmpeg/libavcodec/snow.h
+++ /dev/null
@@ -1,704 +0,0 @@
-/*
- * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
- * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCODEC_SNOW_H
-#define AVCODEC_SNOW_H
-
-#include "dsputil.h"
-#include "hpeldsp.h"
-#include "snow_dwt.h"
-
-#include "rangecoder.h"
-#include "mathops.h"
-#include "mpegvideo.h"
-#include "h264qpel.h"
-
-#define MID_STATE 128
-
-#define MAX_PLANES 4
-#define QSHIFT 5
-#define QROOT (1<<QSHIFT)
-#define LOSSLESS_QLOG -128
-#define FRAC_BITS 4
-#define MAX_REF_FRAMES 8
-
-#define LOG2_OBMC_MAX 8
-#define OBMC_MAX (1<<(LOG2_OBMC_MAX))
-typedef struct BlockNode{
-    int16_t mx;
-    int16_t my;
-    uint8_t ref;
-    uint8_t color[3];
-    uint8_t type;
-//#define TYPE_SPLIT    1
-#define BLOCK_INTRA   1
-#define BLOCK_OPT     2
-//#define TYPE_NOCOLOR  4
-    uint8_t level; //FIXME merge into type?
-}BlockNode;
-
-static const BlockNode null_block= { //FIXME add border maybe
-    .color= {128,128,128},
-    .mx= 0,
-    .my= 0,
-    .ref= 0,
-    .type= 0,
-    .level= 0,
-};
-
-#define LOG2_MB_SIZE 4
-#define MB_SIZE (1<<LOG2_MB_SIZE)
-#define ENCODER_EXTRA_BITS 4
-#define HTAPS_MAX 8
-
-typedef struct x_and_coeff{
-    int16_t x;
-    uint16_t coeff;
-} x_and_coeff;
-
-typedef struct SubBand{
-    int level;
-    int stride;
-    int width;
-    int height;
-    int qlog;        ///< log(qscale)/log[2^(1/6)]
-    DWTELEM *buf;
-    IDWTELEM *ibuf;
-    int buf_x_offset;
-    int buf_y_offset;
-    int stride_line; ///< Stride measured in lines, not pixels.
-    x_and_coeff * x_coeff;
-    struct SubBand *parent;
-    uint8_t state[/*7*2*/ 7 + 512][32];
-}SubBand;
-
-typedef struct Plane{
-    int width;
-    int height;
-    SubBand band[MAX_DECOMPOSITIONS][4];
-
-    int htaps;
-    int8_t hcoeff[HTAPS_MAX/2];
-    int diag_mc;
-    int fast_mc;
-
-    int last_htaps;
-    int8_t last_hcoeff[HTAPS_MAX/2];
-    int last_diag_mc;
-}Plane;
-
-typedef struct SnowContext{
-    AVClass *class;
-    AVCodecContext *avctx;
-    RangeCoder c;
-    DSPContext dsp;
-    HpelDSPContext hdsp;
-    VideoDSPContext vdsp;
-    H264QpelContext h264qpel;
-    SnowDWTContext dwt;
-    AVFrame *new_picture;
-    AVFrame *input_picture;              ///< new_picture with the internal linesizes
-    AVFrame *current_picture;
-    AVFrame *last_picture[MAX_REF_FRAMES];
-    uint8_t *halfpel_plane[MAX_REF_FRAMES][4][4];
-    AVFrame *mconly_picture;
-//     uint8_t q_context[16];
-    uint8_t header_state[32];
-    uint8_t block_state[128 + 32*128];
-    int keyframe;
-    int always_reset;
-    int version;
-    int spatial_decomposition_type;
-    int last_spatial_decomposition_type;
-    int temporal_decomposition_type;
-    int spatial_decomposition_count;
-    int last_spatial_decomposition_count;
-    int temporal_decomposition_count;
-    int max_ref_frames;
-    int ref_frames;
-    int16_t (*ref_mvs[MAX_REF_FRAMES])[2];
-    uint32_t *ref_scores[MAX_REF_FRAMES];
-    DWTELEM *spatial_dwt_buffer;
-    DWTELEM *temp_dwt_buffer;
-    IDWTELEM *spatial_idwt_buffer;
-    IDWTELEM *temp_idwt_buffer;
-    int *run_buffer;
-    int colorspace_type;
-    int chroma_h_shift;
-    int chroma_v_shift;
-    int spatial_scalability;
-    int qlog;
-    int last_qlog;
-    int lambda;
-    int lambda2;
-    int pass1_rc;
-    int mv_scale;
-    int last_mv_scale;
-    int qbias;
-    int last_qbias;
-#define QBIAS_SHIFT 3
-    int b_width;
-    int b_height;
-    int block_max_depth;
-    int last_block_max_depth;
-    int nb_planes;
-    Plane plane[MAX_PLANES];
-    BlockNode *block;
-#define ME_CACHE_SIZE 1024
-    unsigned me_cache[ME_CACHE_SIZE];
-    unsigned me_cache_generation;
-    slice_buffer sb;
-    int memc_only;
-    int no_bitstream;
-
-    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)
-
-    uint8_t *scratchbuf;
-    uint8_t *emu_edge_buffer;
-}SnowContext;
-
-/* Tables */
-extern const uint8_t * const ff_obmc_tab[4];
-extern uint8_t ff_qexp[QROOT];
-extern int ff_scale_mv_ref[MAX_REF_FRAMES][MAX_REF_FRAMES];
-
-/* C bits used by mmx/sse2/altivec */
-
-static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){
-    (*i) = (width) - 2;
-
-    if (width & 1){
-        low[(*i)+1] = low[((*i)+1)>>1];
-        (*i)--;
-    }
-}
-
-static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){
-    for (; (*i)>=0; (*i)-=2){
-        low[(*i)+1] = high[(*i)>>1];
-        low[*i] = low[(*i)>>1];
-    }
-}
-
-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){
-    for(; i<w; i++){
-        dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
-    }
-
-    if((width^lift_high)&1){
-        dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
-    }
-}
-
-static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){
-        for(; i<w; i++){
-            dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);
-        }
-
-        if(width&1){
-            dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);
-        }
-}
-
-/* common code */
-
-int ff_snow_common_init(AVCodecContext *avctx);
-int ff_snow_common_init_after_header(AVCodecContext *avctx);
-void ff_snow_common_end(SnowContext *s);
-void ff_snow_release_buffer(AVCodecContext *avctx);
-void ff_snow_reset_contexts(SnowContext *s);
-int ff_snow_alloc_blocks(SnowContext *s);
-int ff_snow_frame_start(SnowContext *s);
-void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride,
-                     int sx, int sy, int b_w, int b_h, BlockNode *block,
-                     int plane_index, int w, int h);
-/* common inline functions */
-//XXX doublecheck all of them should stay inlined
-
-static inline void snow_set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){
-    const int w= s->b_width << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    const int block_w= 1<<rem_depth;
-    BlockNode block;
-    int i,j;
-
-    block.color[0]= l;
-    block.color[1]= cb;
-    block.color[2]= cr;
-    block.mx= mx;
-    block.my= my;
-    block.ref= ref;
-    block.type= type;
-    block.level= level;
-
-    for(j=0; j<block_w; j++){
-        for(i=0; i<block_w; i++){
-            s->block[index + i + j*w]= block;
-        }
-    }
-}
-
-static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref,
-                           const BlockNode *left, const BlockNode *top, const BlockNode *tr){
-    if(s->ref_frames == 1){
-        *mx = mid_pred(left->mx, top->mx, tr->mx);
-        *my = mid_pred(left->my, top->my, tr->my);
-    }else{
-        const int *scale = ff_scale_mv_ref[ref];
-        *mx = mid_pred((left->mx * scale[left->ref] + 128) >>8,
-                       (top ->mx * scale[top ->ref] + 128) >>8,
-                       (tr  ->mx * scale[tr  ->ref] + 128) >>8);
-        *my = mid_pred((left->my * scale[left->ref] + 128) >>8,
-                       (top ->my * scale[top ->ref] + 128) >>8,
-                       (tr  ->my * scale[tr  ->ref] + 128) >>8);
-    }
-}
-
-static av_always_inline int same_block(BlockNode *a, BlockNode *b){
-    if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){
-        return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2]));
-    }else{
-        return !((a->mx - b->mx) | (a->my - b->my) | (a->ref - b->ref) | ((a->type ^ b->type)&BLOCK_INTRA));
-    }
-}
-
-//FIXME name cleanup (b_w, block_w, b_width stuff)
-//XXX should we really inline it?
-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){
-    const int b_width = s->b_width  << s->block_max_depth;
-    const int b_height= s->b_height << s->block_max_depth;
-    const int b_stride= b_width;
-    BlockNode *lt= &s->block[b_x + b_y*b_stride];
-    BlockNode *rt= lt+1;
-    BlockNode *lb= lt+b_stride;
-    BlockNode *rb= lb+1;
-    uint8_t *block[4];
-    int tmp_step= src_stride >= 7*MB_SIZE ? MB_SIZE : MB_SIZE*src_stride;
-    uint8_t *tmp = s->scratchbuf;
-    uint8_t *ptmp;
-    int x,y;
-
-    if(b_x<0){
-        lt= rt;
-        lb= rb;
-    }else if(b_x + 1 >= b_width){
-        rt= lt;
-        rb= lb;
-    }
-    if(b_y<0){
-        lt= lb;
-        rt= rb;
-    }else if(b_y + 1 >= b_height){
-        lb= lt;
-        rb= rt;
-    }
-
-    if(src_x<0){ //FIXME merge with prev & always round internal width up to *16
-        obmc -= src_x;
-        b_w += src_x;
-        if(!sliced && !offset_dst)
-            dst -= src_x;
-        src_x=0;
-    }else if(src_x + b_w > w){
-        b_w = w - src_x;
-    }
-    if(src_y<0){
-        obmc -= src_y*obmc_stride;
-        b_h += src_y;
-        if(!sliced && !offset_dst)
-            dst -= src_y*dst_stride;
-        src_y=0;
-    }else if(src_y + b_h> h){
-        b_h = h - src_y;
-    }
-
-    if(b_w<=0 || b_h<=0) return;
-
-    av_assert2(src_stride > 2*MB_SIZE + 5);
-
-    if(!sliced && offset_dst)
-        dst += src_x + src_y*dst_stride;
-    dst8+= src_x + src_y*src_stride;
-//    src += src_x + src_y*src_stride;
-
-    ptmp= tmp + 3*tmp_step;
-    block[0]= ptmp;
-    ptmp+=tmp_step;
-    ff_snow_pred_block(s, block[0], tmp, src_stride, src_x, src_y, b_w, b_h, lt, plane_index, w, h);
-
-    if(same_block(lt, rt)){
-        block[1]= block[0];
-    }else{
-        block[1]= ptmp;
-        ptmp+=tmp_step;
-        ff_snow_pred_block(s, block[1], tmp, src_stride, src_x, src_y, b_w, b_h, rt, plane_index, w, h);
-    }
-
-    if(same_block(lt, lb)){
-        block[2]= block[0];
-    }else if(same_block(rt, lb)){
-        block[2]= block[1];
-    }else{
-        block[2]= ptmp;
-        ptmp+=tmp_step;
-        ff_snow_pred_block(s, block[2], tmp, src_stride, src_x, src_y, b_w, b_h, lb, plane_index, w, h);
-    }
-
-    if(same_block(lt, rb) ){
-        block[3]= block[0];
-    }else if(same_block(rt, rb)){
-        block[3]= block[1];
-    }else if(same_block(lb, rb)){
-        block[3]= block[2];
-    }else{
-        block[3]= ptmp;
-        ff_snow_pred_block(s, block[3], tmp, src_stride, src_x, src_y, b_w, b_h, rb, plane_index, w, h);
-    }
-    if(sliced){
-        s->dwt.inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
-    }else{
-        for(y=0; y<b_h; y++){
-            //FIXME ugly misuse of obmc_stride
-            const uint8_t *obmc1= obmc + y*obmc_stride;
-            const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
-            const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
-            const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
-            for(x=0; x<b_w; x++){
-                int v=   obmc1[x] * block[3][x + y*src_stride]
-                        +obmc2[x] * block[2][x + y*src_stride]
-                        +obmc3[x] * block[1][x + y*src_stride]
-                        +obmc4[x] * block[0][x + y*src_stride];
-
-                v <<= 8 - LOG2_OBMC_MAX;
-                if(FRAC_BITS != 8){
-                    v >>= 8 - FRAC_BITS;
-                }
-                if(add){
-                    v += dst[x + y*dst_stride];
-                    v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
-                    if(v&(~255)) v= ~(v>>31);
-                    dst8[x + y*src_stride] = v;
-                }else{
-                    dst[x + y*dst_stride] -= v;
-                }
-            }
-        }
-    }
-}
-
-static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int plane_index, int add, int mb_y){
-    Plane *p= &s->plane[plane_index];
-    const int mb_w= s->b_width  << s->block_max_depth;
-    const int mb_h= s->b_height << s->block_max_depth;
-    int x, y, mb_x;
-    int block_size = MB_SIZE >> s->block_max_depth;
-    int block_w    = plane_index ? block_size>>s->chroma_h_shift : block_size;
-    int block_h    = plane_index ? block_size>>s->chroma_v_shift : block_size;
-    const uint8_t *obmc  = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
-    const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
-    int ref_stride= s->current_picture->linesize[plane_index];
-    uint8_t *dst8= s->current_picture->data[plane_index];
-    int w= p->width;
-    int h= p->height;
-    av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
-    if(s->keyframe || (s->avctx->debug&512)){
-        if(mb_y==mb_h)
-            return;
-
-        if(add){
-            for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
-                for(x=0; x<w; x++){
-                    int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
-                    v >>= FRAC_BITS;
-                    if(v&(~255)) v= ~(v>>31);
-                    dst8[x + y*ref_stride]= v;
-                }
-            }
-        }else{
-            for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
-                for(x=0; x<w; x++){
-                    buf[x + y*w]-= 128<<FRAC_BITS;
-                }
-            }
-        }
-
-        return;
-    }
-
-    for(mb_x=0; mb_x<=mb_w; mb_x++){
-        add_yblock(s, 0, NULL, buf, dst8, obmc,
-                   block_w*mb_x - block_w/2,
-                   block_h*mb_y - block_h/2,
-                   block_w, block_h,
-                   w, h,
-                   w, ref_stride, obmc_stride,
-                   mb_x - 1, mb_y - 1,
-                   add, 1, plane_index);
-    }
-}
-
-static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int plane_index, int add){
-    const int mb_h= s->b_height << s->block_max_depth;
-    int mb_y;
-    for(mb_y=0; mb_y<=mb_h; mb_y++)
-        predict_slice(s, buf, plane_index, add, mb_y);
-}
-
-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){
-    const int w= s->b_width << s->block_max_depth;
-    const int rem_depth= s->block_max_depth - level;
-    const int index= (x + y*w) << rem_depth;
-    const int block_w= 1<<rem_depth;
-    const int block_h= 1<<rem_depth; //FIXME "w!=h"
-    BlockNode block;
-    int i,j;
-
-    block.color[0]= l;
-    block.color[1]= cb;
-    block.color[2]= cr;
-    block.mx= mx;
-    block.my= my;
-    block.ref= ref;
-    block.type= type;
-    block.level= level;
-
-    for(j=0; j<block_h; j++){
-        for(i=0; i<block_w; i++){
-            s->block[index + i + j*w]= block;
-        }
-    }
-}
-
-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){
-    SnowContext *s = c->avctx->priv_data;
-    const int offset[3]= {
-          y*c->  stride + x,
-        ((y*c->uvstride + x)>>s->chroma_h_shift),
-        ((y*c->uvstride + x)>>s->chroma_h_shift),
-    };
-    int i;
-    for(i=0; i<3; i++){
-        c->src[0][i]= src [i];
-        c->ref[0][i]= ref [i] + offset[i];
-    }
-    av_assert2(!ref_index);
-}
-
-
-/* bitstream functions */
-
-extern const int8_t ff_quant3bA[256];
-
-#define QEXPSHIFT (7-FRAC_BITS+8) //FIXME try to change this to 0
-
-static inline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
-    int i;
-
-    if(v){
-        const int a= FFABS(v);
-        const int e= av_log2(a);
-        const int el= FFMIN(e, 10);
-        put_rac(c, state+0, 0);
-
-        for(i=0; i<el; i++){
-            put_rac(c, state+1+i, 1);  //1..10
-        }
-        for(; i<e; i++){
-            put_rac(c, state+1+9, 1);  //1..10
-        }
-        put_rac(c, state+1+FFMIN(i,9), 0);
-
-        for(i=e-1; i>=el; i--){
-            put_rac(c, state+22+9, (a>>i)&1); //22..31
-        }
-        for(; i>=0; i--){
-            put_rac(c, state+22+i, (a>>i)&1); //22..31
-        }
-
-        if(is_signed)
-            put_rac(c, state+11 + el, v < 0); //11..21
-    }else{
-        put_rac(c, state+0, 1);
-    }
-}
-
-static inline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
-    if(get_rac(c, state+0))
-        return 0;
-    else{
-        int i, e, a;
-        e= 0;
-        while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
-            e++;
-        }
-
-        a= 1;
-        for(i=e-1; i>=0; i--){
-            a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
-        }
-
-        e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
-        return (a^e)-e;
-    }
-}
-
-static inline void put_symbol2(RangeCoder *c, uint8_t *state, int v, int log2){
-    int i;
-    int r= log2>=0 ? 1<<log2 : 1;
-
-    av_assert2(v>=0);
-    av_assert2(log2>=-4);
-
-    while(v >= r){
-        put_rac(c, state+4+log2, 1);
-        v -= r;
-        log2++;
-        if(log2>0) r+=r;
-    }
-    put_rac(c, state+4+log2, 0);
-
-    for(i=log2-1; i>=0; i--){
-        put_rac(c, state+31-i, (v>>i)&1);
-    }
-}
-
-static inline int get_symbol2(RangeCoder *c, uint8_t *state, int log2){
-    int i;
-    int r= log2>=0 ? 1<<log2 : 1;
-    int v=0;
-
-    av_assert2(log2>=-4);
-
-    while(log2<28 && get_rac(c, state+4+log2)){
-        v+= r;
-        log2++;
-        if(log2>0) r+=r;
-    }
-
-    for(i=log2-1; i>=0; i--){
-        v+= get_rac(c, state+31-i)<<i;
-    }
-
-    return v;
-}
-
-static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){
-    const int w= b->width;
-    const int h= b->height;
-    int x,y;
-
-    int run, runs;
-    x_and_coeff *xc= b->x_coeff;
-    x_and_coeff *prev_xc= NULL;
-    x_and_coeff *prev2_xc= xc;
-    x_and_coeff *parent_xc= parent ? parent->x_coeff : NULL;
-    x_and_coeff *prev_parent_xc= parent_xc;
-
-    runs= get_symbol2(&s->c, b->state[30], 0);
-    if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
-    else           run= INT_MAX;
-
-    for(y=0; y<h; y++){
-        int v=0;
-        int lt=0, t=0, rt=0;
-
-        if(y && prev_xc->x == 0){
-            rt= prev_xc->coeff;
-        }
-        for(x=0; x<w; x++){
-            int p=0;
-            const int l= v;
-
-            lt= t; t= rt;
-
-            if(y){
-                if(prev_xc->x <= x)
-                    prev_xc++;
-                if(prev_xc->x == x + 1)
-                    rt= prev_xc->coeff;
-                else
-                    rt=0;
-            }
-            if(parent_xc){
-                if(x>>1 > parent_xc->x){
-                    parent_xc++;
-                }
-                if(x>>1 == parent_xc->x){
-                    p= parent_xc->coeff;
-                }
-            }
-            if(/*ll|*/l|lt|t|rt|p){
-                int context= av_log2(/*FFABS(ll) + */3*(l>>1) + (lt>>1) + (t&~1) + (rt>>1) + (p>>1));
-
-                v=get_rac(&s->c, &b->state[0][context]);
-                if(v){
-                    v= 2*(get_symbol2(&s->c, b->state[context + 2], context-4) + 1);
-                    v+=get_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l&0xFF] + 3*ff_quant3bA[t&0xFF]]);
-
-                    xc->x=x;
-                    (xc++)->coeff= v;
-                }
-            }else{
-                if(!run){
-                    if(runs-- > 0) run= get_symbol2(&s->c, b->state[1], 3);
-                    else           run= INT_MAX;
-                    v= 2*(get_symbol2(&s->c, b->state[0 + 2], 0-4) + 1);
-                    v+=get_rac(&s->c, &b->state[0][16 + 1 + 3]);
-
-                    xc->x=x;
-                    (xc++)->coeff= v;
-                }else{
-                    int max_run;
-                    run--;
-                    v=0;
-                    av_assert2(run >= 0);
-                    if(y) max_run= FFMIN(run, prev_xc->x - x - 2);
-                    else  max_run= FFMIN(run, w-x-1);
-                    if(parent_xc)
-                        max_run= FFMIN(max_run, 2*parent_xc->x - x - 1);
-                    av_assert2(max_run >= 0 && max_run <= run);
-
-                    x+= max_run;
-                    run-= max_run;
-                }
-            }
-        }
-        (xc++)->x= w+1; //end marker
-        prev_xc= prev2_xc;
-        prev2_xc= xc;
-
-        if(parent_xc){
-            if(y&1){
-                while(parent_xc->x != parent->width+1)
-                    parent_xc++;
-                parent_xc++;
-                prev_parent_xc= parent_xc;
-            }else{
-                parent_xc= prev_parent_xc;
-            }
-        }
-    }
-
-    (xc++)->x= w+1; //end marker
-}
-
-#endif /* AVCODEC_SNOW_H */
-- 
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