wmv2: K&R formatting cosmetics
authorGabriel Dume <gabriel.ddx84@gmail.com>
Tue, 2 Sep 2014 19:28:51 +0000 (15:28 -0400)
committerDiego Biurrun <diego@biurrun.de>
Tue, 2 Sep 2014 23:14:22 +0000 (16:14 -0700)
Signed-off-by: Diego Biurrun <diego@biurrun.de>
libavcodec/wmv2.c
libavcodec/wmv2.h
libavcodec/wmv2dec.c
libavcodec/wmv2enc.c

index 7b1ea57..555d30e 100644 (file)
@@ -26,8 +26,9 @@
 #include "wmv2.h"
 
 
-av_cold void ff_wmv2_common_init(Wmv2Context * w){
-    MpegEncContext * const s= &w->s;
+av_cold void ff_wmv2_common_init(Wmv2Context *w)
+{
+    MpegEncContext *const s = &w->s;
 
     ff_blockdsp_init(&s->bdsp, s->avctx);
     ff_wmv2dsp_init(&w->wdsp);
@@ -51,84 +52,87 @@ av_cold void ff_wmv2_common_init(Wmv2Context * w){
     s->idsp.idct     = NULL;
 }
 
-static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n){
-    MpegEncContext * const s= &w->s;
-
-  if (s->block_last_index[n] >= 0) {
-    switch(w->abt_type_table[n]){
-    case 0:
-        w->wdsp.idct_add(dst, stride, block1);
-        break;
-    case 1:
-        ff_simple_idct84_add(dst           , stride, block1);
-        ff_simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
-        s->bdsp.clear_block(w->abt_block2[n]);
-        break;
-    case 2:
-        ff_simple_idct48_add(dst           , stride, block1);
-        ff_simple_idct48_add(dst + 4       , stride, w->abt_block2[n]);
-        s->bdsp.clear_block(w->abt_block2[n]);
-        break;
-    default:
-        av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
+static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
+                           uint8_t *dst, int stride, int n)
+{
+    MpegEncContext *const s = &w->s;
+
+    if (s->block_last_index[n] >= 0) {
+        switch (w->abt_type_table[n]) {
+        case 0:
+            w->wdsp.idct_add(dst, stride, block1);
+            break;
+        case 1:
+            ff_simple_idct84_add(dst, stride, block1);
+            ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
+            s->bdsp.clear_block(w->abt_block2[n]);
+            break;
+        case 2:
+            ff_simple_idct48_add(dst, stride, block1);
+            ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]);
+            s->bdsp.clear_block(w->abt_block2[n]);
+            break;
+        default:
+            av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
+        }
     }
-  }
 }
 
-void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
-    Wmv2Context * const w= (Wmv2Context*)s;
+void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64],
+                    uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
+{
+    Wmv2Context *const w = (Wmv2Context *) s;
 
-    wmv2_add_block(w, block1[0], dest_y                    , s->linesize, 0);
-    wmv2_add_block(w, block1[1], dest_y + 8                , s->linesize, 1);
-    wmv2_add_block(w, block1[2], dest_y +     8*s->linesize, s->linesize, 2);
-    wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
+    wmv2_add_block(w, block1[0], dest_y,                       s->linesize, 0);
+    wmv2_add_block(w, block1[1], dest_y + 8,                   s->linesize, 1);
+    wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize,     s->linesize, 2);
+    wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);
 
-    if(s->flags&CODEC_FLAG_GRAY) return;
+    if (s->flags & CODEC_FLAG_GRAY)
+        return;
 
-    wmv2_add_block(w, block1[4], dest_cb                   , s->uvlinesize, 4);
-    wmv2_add_block(w, block1[5], dest_cr                   , s->uvlinesize, 5);
+    wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
+    wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
 }
 
-void ff_mspel_motion(MpegEncContext *s,
-                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
-                               int motion_x, int motion_y, int h)
+void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
+                     uint8_t *dest_cb, uint8_t *dest_cr,
+                     uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
+                     int motion_x, int motion_y, int h)
 {
-    Wmv2Context * const w= (Wmv2Context*)s;
+    Wmv2Context *const w = (Wmv2Context *) s;
     uint8_t *ptr;
     int dxy, offset, mx, my, src_x, src_y, v_edge_pos;
     ptrdiff_t linesize, uvlinesize;
-    int emu=0;
+    int emu = 0;
 
-    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
-    dxy = 2*dxy + w->hshift;
+    dxy   = ((motion_y & 1) << 1) | (motion_x & 1);
+    dxy   = 2 * dxy + w->hshift;
     src_x = s->mb_x * 16 + (motion_x >> 1);
     src_y = s->mb_y * 16 + (motion_y >> 1);
 
     /* WARNING: do no forget half pels */
     v_edge_pos = s->v_edge_pos;
-    src_x = av_clip(src_x, -16, s->width);
-    src_y = av_clip(src_y, -16, s->height);
+    src_x      = av_clip(src_x, -16, s->width);
+    src_y      = av_clip(src_y, -16, s->height);
 
-    if(src_x<=-16 || src_x >= s->width)
+    if (src_x <= -16 || src_x >= s->width)
         dxy &= ~3;
-    if(src_y<=-16 || src_y >= s->height)
+    if (src_y <= -16 || src_y >= s->height)
         dxy &= ~4;
 
     linesize   = s->linesize;
     uvlinesize = s->uvlinesize;
-    ptr = ref_picture[0] + (src_y * linesize) + src_x;
-
-    if(src_x<1 || src_y<1 || src_x + 17  >= s->h_edge_pos
-                          || src_y + h+1 >= v_edge_pos){
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ptr - 1 - s->linesize,
-                                 s->linesize, s->linesize,
-                                 19, 19,
+    ptr        = ref_picture[0] + (src_y * linesize) + src_x;
+
+    if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
+        src_y + h + 1 >= v_edge_pos) {
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize,
+                                 s->linesize, s->linesize, 19, 19,
                                  src_x - 1, src_y - 1,
                                  s->h_edge_pos, s->v_edge_pos);
-        ptr= s->edge_emu_buffer + 1 + s->linesize;
-        emu=1;
+        ptr = s->edge_emu_buffer + 1 + s->linesize;
+        emu = 1;
     }
 
     w->wdsp.put_mspel_pixels_tab[dxy](dest_y,                    ptr,                    linesize);
@@ -136,7 +140,8 @@ void ff_mspel_motion(MpegEncContext *s,
     w->wdsp.put_mspel_pixels_tab[dxy](dest_y     + 8 * linesize, ptr     + 8 * linesize, linesize);
     w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
 
-    if(s->flags&CODEC_FLAG_GRAY) return;
+    if (s->flags & CODEC_FLAG_GRAY)
+        return;
 
     if (s->out_format == FMT_H263) {
         dxy = 0;
@@ -147,9 +152,9 @@ void ff_mspel_motion(MpegEncContext *s,
         mx = motion_x >> 2;
         my = motion_y >> 2;
     } else {
-        mx = motion_x / 2;
-        my = motion_y / 2;
-        dxy = ((my & 1) << 1) | (mx & 1);
+        mx   = motion_x / 2;
+        my   = motion_y / 2;
+        dxy  = ((my & 1) << 1) | (mx & 1);
         mx >>= 1;
         my >>= 1;
     }
@@ -163,25 +168,25 @@ void ff_mspel_motion(MpegEncContext *s,
     if (src_y == (s->height >> 1))
         dxy &= ~2;
     offset = (src_y * uvlinesize) + src_x;
-    ptr = ref_picture[1] + offset;
-    if(emu){
+    ptr    = ref_picture[1] + offset;
+    if (emu) {
         s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr= s->edge_emu_buffer;
+        ptr = s->edge_emu_buffer;
     }
     pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
 
     ptr = ref_picture[2] + offset;
-    if(emu){
+    if (emu) {
         s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
                                  s->uvlinesize, s->uvlinesize,
                                  9, 9,
                                  src_x, src_y,
                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ptr= s->edge_emu_buffer;
+        ptr = s->edge_emu_buffer;
     }
     pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
 }
index e01f6c1..03a8514 100644 (file)
@@ -22,8 +22,8 @@
 #define AVCODEC_WMV2_H
 
 #include "avcodec.h"
-#include "mpegvideo.h"
 #include "intrax8.h"
+#include "mpegvideo.h"
 #include "wmv2dsp.h"
 
 #define SKIP_TYPE_NONE 0
@@ -32,7 +32,7 @@
 #define SKIP_TYPE_COL  3
 
 
-typedef struct Wmv2Context{
+typedef struct Wmv2Context {
     MpegEncContext s;
     IntraX8Context x8;
     WMV2DSPContext wdsp;
@@ -52,8 +52,8 @@ typedef struct Wmv2Context{
 
     ScanTable abt_scantable[2];
     DECLARE_ALIGNED(16, int16_t, abt_block2)[6][64];
-}Wmv2Context;
+} Wmv2Context;
 
-void ff_wmv2_common_init(Wmv2Context * w);
+void ff_wmv2_common_init(Wmv2Context *w);
 
 #endif /* AVCODEC_WMV2_H */
dissimilarity index 60%
index 4ebc801..8bdf5e1 100644 (file)
-/*
- * Copyright (c) 2002 The Libav Project
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "avcodec.h"
-#include "mpegutils.h"
-#include "mpegvideo.h"
-#include "h263.h"
-#include "mathops.h"
-#include "msmpeg4.h"
-#include "msmpeg4data.h"
-#include "intrax8.h"
-#include "wmv2.h"
-
-
-static void parse_mb_skip(Wmv2Context * w){
-    int mb_x, mb_y;
-    MpegEncContext * const s= &w->s;
-    uint32_t * const mb_type = s->current_picture_ptr->mb_type;
-
-    w->skip_type= get_bits(&s->gb, 2);
-    switch(w->skip_type){
-    case SKIP_TYPE_NONE:
-        for(mb_y=0; mb_y<s->mb_height; mb_y++){
-            for(mb_x=0; mb_x<s->mb_width; mb_x++){
-                mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
-            }
-        }
-        break;
-    case SKIP_TYPE_MPEG:
-        for(mb_y=0; mb_y<s->mb_height; mb_y++){
-            for(mb_x=0; mb_x<s->mb_width; mb_x++){
-                mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
-            }
-        }
-        break;
-    case SKIP_TYPE_ROW:
-        for(mb_y=0; mb_y<s->mb_height; mb_y++){
-            if(get_bits1(&s->gb)){
-                for(mb_x=0; mb_x<s->mb_width; mb_x++){
-                    mb_type[mb_y*s->mb_stride + mb_x]=  MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
-                }
-            }else{
-                for(mb_x=0; mb_x<s->mb_width; mb_x++){
-                    mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
-                }
-            }
-        }
-        break;
-    case SKIP_TYPE_COL:
-        for(mb_x=0; mb_x<s->mb_width; mb_x++){
-            if(get_bits1(&s->gb)){
-                for(mb_y=0; mb_y<s->mb_height; mb_y++){
-                    mb_type[mb_y*s->mb_stride + mb_x]=  MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
-                }
-            }else{
-                for(mb_y=0; mb_y<s->mb_height; mb_y++){
-                    mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
-                }
-            }
-        }
-        break;
-    }
-}
-
-static int decode_ext_header(Wmv2Context *w){
-    MpegEncContext * const s= &w->s;
-    GetBitContext gb;
-    int fps;
-    int code;
-
-    if(s->avctx->extradata_size<4) return -1;
-
-    init_get_bits(&gb, s->avctx->extradata, 32);
-
-    fps                = get_bits(&gb, 5);
-    s->bit_rate        = get_bits(&gb, 11)*1024;
-    w->mspel_bit       = get_bits1(&gb);
-    s->loop_filter     = get_bits1(&gb);
-    w->abt_flag        = get_bits1(&gb);
-    w->j_type_bit      = get_bits1(&gb);
-    w->top_left_mv_flag= get_bits1(&gb);
-    w->per_mb_rl_bit   = get_bits1(&gb);
-    code               = get_bits(&gb, 3);
-
-    if(code==0) return -1;
-
-    s->slice_height = s->mb_height / code;
-
-    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
-        av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%d, slices:%d\n",
-        fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, s->loop_filter,
-        code);
-    }
-    return 0;
-}
-
-int ff_wmv2_decode_picture_header(MpegEncContext * s)
-{
-    Wmv2Context * const w= (Wmv2Context*)s;
-    int code;
-
-    if(s->picture_number==0)
-        decode_ext_header(w);
-
-    s->pict_type = get_bits1(&s->gb) + 1;
-    if(s->pict_type == AV_PICTURE_TYPE_I){
-        code = get_bits(&s->gb, 7);
-        av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
-    }
-    s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
-    if(s->qscale <= 0)
-       return -1;
-
-    return 0;
-}
-
-int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
-{
-    Wmv2Context * const w= (Wmv2Context*)s;
-
-    if (s->pict_type == AV_PICTURE_TYPE_I) {
-        if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
-        else              w->j_type= 0; //FIXME check
-
-        if(!w->j_type){
-            if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
-            else                 s->per_mb_rl_table= 0;
-
-            if(!s->per_mb_rl_table){
-                s->rl_chroma_table_index = decode012(&s->gb);
-                s->rl_table_index = decode012(&s->gb);
-            }
-
-            s->dc_table_index = get_bits1(&s->gb);
-        }
-        s->inter_intra_pred= 0;
-        s->no_rounding = 1;
-        if(s->avctx->debug&FF_DEBUG_PICT_INFO){
-            av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
-                s->qscale,
-                s->rl_chroma_table_index,
-                s->rl_table_index,
-                s->dc_table_index,
-                s->per_mb_rl_table,
-                w->j_type);
-        }
-    }else{
-        int cbp_index;
-        w->j_type=0;
-
-        parse_mb_skip(w);
-        cbp_index= decode012(&s->gb);
-        if(s->qscale <= 10){
-            int map[3]= {0,2,1};
-            w->cbp_table_index= map[cbp_index];
-        }else if(s->qscale <= 20){
-            int map[3]= {1,0,2};
-            w->cbp_table_index= map[cbp_index];
-        }else{
-            int map[3]= {2,1,0};
-            w->cbp_table_index= map[cbp_index];
-        }
-
-        if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
-        else             s->mspel= 0; //FIXME check
-
-        if(w->abt_flag){
-            w->per_mb_abt= get_bits1(&s->gb)^1;
-            if(!w->per_mb_abt){
-                w->abt_type= decode012(&s->gb);
-            }
-        }
-
-        if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
-        else                 s->per_mb_rl_table= 0;
-
-        if(!s->per_mb_rl_table){
-            s->rl_table_index = decode012(&s->gb);
-            s->rl_chroma_table_index = s->rl_table_index;
-        }
-
-        s->dc_table_index = get_bits1(&s->gb);
-        s->mv_table_index = get_bits1(&s->gb);
-
-        s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
-        s->no_rounding ^= 1;
-
-        if(s->avctx->debug&FF_DEBUG_PICT_INFO){
-            av_log(s->avctx, AV_LOG_DEBUG, "rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
-                s->rl_table_index,
-                s->rl_chroma_table_index,
-                s->dc_table_index,
-                s->mv_table_index,
-                s->per_mb_rl_table,
-                s->qscale,
-                s->mspel,
-                w->per_mb_abt,
-                w->abt_type,
-                w->cbp_table_index,
-                s->inter_intra_pred);
-        }
-    }
-    s->esc3_level_length= 0;
-    s->esc3_run_length= 0;
-
-s->picture_number++; //FIXME ?
-
-
-    if(w->j_type){
-        ff_intrax8_decode_picture(&w->x8, 2*s->qscale, (s->qscale-1)|1 );
-        return 1;
-    }
-
-    return 0;
-}
-
-static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
-    MpegEncContext * const s= &w->s;
-    int ret;
-
-    ret= ff_msmpeg4_decode_motion(s, mx_ptr, my_ptr);
-
-    if(ret<0) return -1;
-
-    if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
-        w->hshift= get_bits1(&s->gb);
-    else
-        w->hshift= 0;
-
-    return 0;
-}
-
-static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
-    MpegEncContext * const s= &w->s;
-    int xy, wrap, diff, type;
-    int16_t *A, *B, *C, *mot_val;
-
-    wrap = s->b8_stride;
-    xy = s->block_index[0];
-
-    mot_val = s->current_picture.motion_val[0][xy];
-
-    A = s->current_picture.motion_val[0][xy - 1];
-    B = s->current_picture.motion_val[0][xy - wrap];
-    C = s->current_picture.motion_val[0][xy + 2 - wrap];
-
-    if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
-        diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
-    else
-        diff=0;
-
-    if(diff >= 8)
-        type= get_bits1(&s->gb);
-    else
-        type= 2;
-
-    if(type == 0){
-        *px= A[0];
-        *py= A[1];
-    }else if(type == 1){
-        *px= B[0];
-        *py= B[1];
-    }else{
-        /* special case for first (slice) line */
-        if (s->first_slice_line) {
-            *px = A[0];
-            *py = A[1];
-        } else {
-            *px = mid_pred(A[0], B[0], C[0]);
-            *py = mid_pred(A[1], B[1], C[1]);
-        }
-    }
-
-    return mot_val;
-}
-
-static inline int wmv2_decode_inter_block(Wmv2Context *w, int16_t *block, int n, int cbp){
-    MpegEncContext * const s= &w->s;
-    static const int sub_cbp_table[3]= {2,3,1};
-    int sub_cbp;
-
-    if(!cbp){
-        s->block_last_index[n] = -1;
-
-        return 0;
-    }
-
-    if(w->per_block_abt)
-        w->abt_type= decode012(&s->gb);
-    w->abt_type_table[n]= w->abt_type;
-
-    if(w->abt_type){
-//        const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
-        const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
-//        const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
-
-        sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
-
-        if(sub_cbp&1){
-            if (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
-                return -1;
-        }
-
-        if(sub_cbp&2){
-            if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
-                return -1;
-        }
-        s->block_last_index[n] = 63;
-
-        return 0;
-    }else{
-        return ff_msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
-    }
-}
-
-
-int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64])
-{
-    Wmv2Context * const w= (Wmv2Context*)s;
-    int cbp, code, i;
-    uint8_t *coded_val;
-
-    if(w->j_type) return 0;
-
-    if (s->pict_type == AV_PICTURE_TYPE_P) {
-        if (IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])) {
-            /* skip mb */
-            s->mb_intra = 0;
-            for(i=0;i<6;i++)
-                s->block_last_index[i] = -1;
-            s->mv_dir = MV_DIR_FORWARD;
-            s->mv_type = MV_TYPE_16X16;
-            s->mv[0][0][0] = 0;
-            s->mv[0][0][1] = 0;
-            s->mb_skipped = 1;
-            w->hshift=0;
-            return 0;
-        }
-
-        code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
-        if (code < 0)
-            return -1;
-        s->mb_intra = (~code & 0x40) >> 6;
-
-        cbp = code & 0x3f;
-    } else {
-        s->mb_intra = 1;
-        code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
-        if (code < 0){
-            av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
-            return -1;
-        }
-        /* predict coded block pattern */
-        cbp = 0;
-        for(i=0;i<6;i++) {
-            int val = ((code >> (5 - i)) & 1);
-            if (i < 4) {
-                int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
-                val = val ^ pred;
-                *coded_val = val;
-            }
-            cbp |= val << (5 - i);
-        }
-    }
-
-    if (!s->mb_intra) {
-        int mx, my;
-        wmv2_pred_motion(w, &mx, &my);
-
-        if(cbp){
-            s->bdsp.clear_blocks(s->block[0]);
-            if(s->per_mb_rl_table){
-                s->rl_table_index = decode012(&s->gb);
-                s->rl_chroma_table_index = s->rl_table_index;
-            }
-
-            if(w->abt_flag && w->per_mb_abt){
-                w->per_block_abt= get_bits1(&s->gb);
-                if(!w->per_block_abt)
-                    w->abt_type= decode012(&s->gb);
-            }else
-                w->per_block_abt=0;
-        }
-
-        if (wmv2_decode_motion(w, &mx, &my) < 0)
-            return -1;
-
-        s->mv_dir = MV_DIR_FORWARD;
-        s->mv_type = MV_TYPE_16X16;
-        s->mv[0][0][0] = mx;
-        s->mv[0][0][1] = my;
-
-        for (i = 0; i < 6; i++) {
-            if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
-            {
-                av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
-                return -1;
-            }
-        }
-    } else {
-        if (s->pict_type==AV_PICTURE_TYPE_P)
-            av_dlog(s->avctx, "%d%d ", s->inter_intra_pred, cbp);
-        av_dlog(s->avctx, "I at %d %d %d %06X\n", s->mb_x, s->mb_y,
-                ((cbp & 3) ? 1 : 0) +((cbp & 0x3C)? 2 : 0),
-                show_bits(&s->gb, 24));
-        s->ac_pred = get_bits1(&s->gb);
-        if(s->inter_intra_pred){
-            s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
-            av_dlog(s->avctx, "%d%d %d %d/",
-                    s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
-        }
-        if(s->per_mb_rl_table && cbp){
-            s->rl_table_index = decode012(&s->gb);
-            s->rl_chroma_table_index = s->rl_table_index;
-        }
-
-        s->bdsp.clear_blocks(s->block[0]);
-        for (i = 0; i < 6; i++) {
-            if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
-            {
-                av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
-                return -1;
-            }
-        }
-    }
-
-    return 0;
-}
-
-static av_cold int wmv2_decode_init(AVCodecContext *avctx){
-    Wmv2Context * const w= avctx->priv_data;
-
-    if(ff_msmpeg4_decode_init(avctx) < 0)
-        return -1;
-
-    ff_wmv2_common_init(w);
-
-    ff_intrax8_common_init(&w->x8,&w->s);
-
-    return 0;
-}
-
-static av_cold int wmv2_decode_end(AVCodecContext *avctx)
-{
-    Wmv2Context *w = avctx->priv_data;
-
-    ff_intrax8_common_end(&w->x8);
-    return ff_h263_decode_end(avctx);
-}
-
-AVCodec ff_wmv2_decoder = {
-    .name           = "wmv2",
-    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_WMV2,
-    .priv_data_size = sizeof(Wmv2Context),
-    .init           = wmv2_decode_init,
-    .close          = wmv2_decode_end,
-    .decode         = ff_h263_decode_frame,
-    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
-    .pix_fmts       = (const enum AVPixelFormat[]) {
-        AV_PIX_FMT_YUV420P,
-        AV_PIX_FMT_NONE
-    },
-};
+/*
+ * Copyright (c) 2002 The Libav Project
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avcodec.h"
+#include "h263.h"
+#include "intrax8.h"
+#include "mathops.h"
+#include "mpegutils.h"
+#include "mpegvideo.h"
+#include "msmpeg4.h"
+#include "msmpeg4data.h"
+#include "wmv2.h"
+
+
+static void parse_mb_skip(Wmv2Context *w)
+{
+    int mb_x, mb_y;
+    MpegEncContext *const s = &w->s;
+    uint32_t *const mb_type = s->current_picture_ptr->mb_type;
+
+    w->skip_type = get_bits(&s->gb, 2);
+    switch (w->skip_type) {
+    case SKIP_TYPE_NONE:
+        for (mb_y = 0; mb_y < s->mb_height; mb_y++)
+            for (mb_x = 0; mb_x < s->mb_width; mb_x++)
+                mb_type[mb_y * s->mb_stride + mb_x] =
+                    MB_TYPE_16x16 | MB_TYPE_L0;
+        break;
+    case SKIP_TYPE_MPEG:
+        for (mb_y = 0; mb_y < s->mb_height; mb_y++)
+            for (mb_x = 0; mb_x < s->mb_width; mb_x++)
+                mb_type[mb_y * s->mb_stride + mb_x] =
+                    (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
+        break;
+    case SKIP_TYPE_ROW:
+        for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+            if (get_bits1(&s->gb)) {
+                for (mb_x = 0; mb_x < s->mb_width; mb_x++)
+                    mb_type[mb_y * s->mb_stride + mb_x] =
+                        MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
+            } else {
+                for (mb_x = 0; mb_x < s->mb_width; mb_x++)
+                    mb_type[mb_y * s->mb_stride + mb_x] =
+                        (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
+            }
+        }
+        break;
+    case SKIP_TYPE_COL:
+        for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+            if (get_bits1(&s->gb)) {
+                for (mb_y = 0; mb_y < s->mb_height; mb_y++)
+                    mb_type[mb_y * s->mb_stride + mb_x] =
+                        MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
+            } else {
+                for (mb_y = 0; mb_y < s->mb_height; mb_y++)
+                    mb_type[mb_y * s->mb_stride + mb_x] =
+                        (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
+            }
+        }
+        break;
+    }
+}
+
+static int decode_ext_header(Wmv2Context *w)
+{
+    MpegEncContext *const s = &w->s;
+    GetBitContext gb;
+    int fps;
+    int code;
+
+    if (s->avctx->extradata_size < 4)
+        return -1;
+
+    init_get_bits(&gb, s->avctx->extradata, 32);
+
+    fps                 = get_bits(&gb, 5);
+    s->bit_rate         = get_bits(&gb, 11) * 1024;
+    w->mspel_bit        = get_bits1(&gb);
+    s->loop_filter      = get_bits1(&gb);
+    w->abt_flag         = get_bits1(&gb);
+    w->j_type_bit       = get_bits1(&gb);
+    w->top_left_mv_flag = get_bits1(&gb);
+    w->per_mb_rl_bit    = get_bits1(&gb);
+    code                = get_bits(&gb, 3);
+
+    if (code == 0)
+        return -1;
+
+    s->slice_height = s->mb_height / code;
+
+    if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+        av_log(s->avctx, AV_LOG_DEBUG,
+               "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, "
+               "tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%d, "
+               "slices:%d\n",
+               fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit,
+               w->top_left_mv_flag, w->per_mb_rl_bit, code, s->loop_filter,
+               code);
+    return 0;
+}
+
+int ff_wmv2_decode_picture_header(MpegEncContext *s)
+{
+    Wmv2Context *const w = (Wmv2Context *) s;
+    int code;
+
+    if (s->picture_number == 0)
+        decode_ext_header(w);
+
+    s->pict_type = get_bits1(&s->gb) + 1;
+    if (s->pict_type == AV_PICTURE_TYPE_I) {
+        code = get_bits(&s->gb, 7);
+        av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code);
+    }
+    s->chroma_qscale = s->qscale = get_bits(&s->gb, 5);
+    if (s->qscale <= 0)
+        return -1;
+
+    return 0;
+}
+
+int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s)
+{
+    Wmv2Context *const w = (Wmv2Context *) s;
+
+    if (s->pict_type == AV_PICTURE_TYPE_I) {
+        if (w->j_type_bit)
+            w->j_type = get_bits1(&s->gb);
+        else
+            w->j_type = 0; // FIXME check
+
+        if (!w->j_type) {
+            if (w->per_mb_rl_bit)
+                s->per_mb_rl_table = get_bits1(&s->gb);
+            else
+                s->per_mb_rl_table = 0;
+
+            if (!s->per_mb_rl_table) {
+                s->rl_chroma_table_index = decode012(&s->gb);
+                s->rl_table_index        = decode012(&s->gb);
+            }
+
+            s->dc_table_index = get_bits1(&s->gb);
+        }
+        s->inter_intra_pred = 0;
+        s->no_rounding      = 1;
+        if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
+            av_log(s->avctx, AV_LOG_DEBUG,
+                   "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
+                   s->qscale, s->rl_chroma_table_index, s->rl_table_index,
+                   s->dc_table_index, s->per_mb_rl_table, w->j_type);
+        }
+    } else {
+        int cbp_index;
+        w->j_type = 0;
+
+        parse_mb_skip(w);
+        cbp_index = decode012(&s->gb);
+        if (s->qscale <= 10) {
+            int map[3]         = { 0, 2, 1 };
+            w->cbp_table_index = map[cbp_index];
+        } else if (s->qscale <= 20) {
+            int map[3]         = { 1, 0, 2 };
+            w->cbp_table_index = map[cbp_index];
+        } else {
+            int map[3]         = {2,1,0};
+            w->cbp_table_index = map[cbp_index];
+        }
+
+        if (w->mspel_bit)
+            s->mspel = get_bits1(&s->gb);
+        else
+            s->mspel = 0; // FIXME check
+
+        if (w->abt_flag) {
+            w->per_mb_abt = get_bits1(&s->gb) ^ 1;
+            if (!w->per_mb_abt)
+                w->abt_type = decode012(&s->gb);
+        }
+
+        if (w->per_mb_rl_bit)
+            s->per_mb_rl_table = get_bits1(&s->gb);
+        else
+            s->per_mb_rl_table = 0;
+
+        if (!s->per_mb_rl_table) {
+            s->rl_table_index        = decode012(&s->gb);
+            s->rl_chroma_table_index = s->rl_table_index;
+        }
+
+        s->dc_table_index   = get_bits1(&s->gb);
+        s->mv_table_index   = get_bits1(&s->gb);
+
+        s->inter_intra_pred = 0; // (s->width * s->height < 320 * 240 && s->bit_rate <= II_BITRATE);
+        s->no_rounding     ^= 1;
+
+        if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
+            av_log(s->avctx, AV_LOG_DEBUG,
+                   "rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d "
+                   "per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
+                   s->rl_table_index, s->rl_chroma_table_index,
+                   s->dc_table_index, s->mv_table_index,
+                   s->per_mb_rl_table, s->qscale, s->mspel,
+                   w->per_mb_abt, w->abt_type, w->cbp_table_index,
+                   s->inter_intra_pred);
+        }
+    }
+    s->esc3_level_length = 0;
+    s->esc3_run_length   = 0;
+    s->picture_number++; // FIXME ?
+
+    if (w->j_type) {
+        ff_intrax8_decode_picture(&w->x8, 2 * s->qscale, (s->qscale - 1) | 1);
+        return 1;
+    }
+
+    return 0;
+}
+
+static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr)
+{
+    MpegEncContext *const s = &w->s;
+    int ret;
+
+    ret = ff_msmpeg4_decode_motion(s, mx_ptr, my_ptr);
+
+    if (ret < 0)
+        return -1;
+
+    if ((((*mx_ptr) | (*my_ptr)) & 1) && s->mspel)
+        w->hshift = get_bits1(&s->gb);
+    else
+        w->hshift = 0;
+
+    return 0;
+}
+
+static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py)
+{
+    MpegEncContext *const s = &w->s;
+    int xy, wrap, diff, type;
+    int16_t *A, *B, *C, *mot_val;
+
+    wrap    = s->b8_stride;
+    xy      = s->block_index[0];
+
+    mot_val = s->current_picture.motion_val[0][xy];
+
+    A       = s->current_picture.motion_val[0][xy     - 1];
+    B       = s->current_picture.motion_val[0][xy     - wrap];
+    C       = s->current_picture.motion_val[0][xy + 2 - wrap];
+
+    if (s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
+        diff = FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1]));
+    else
+        diff = 0;
+
+    if (diff >= 8)
+        type = get_bits1(&s->gb);
+    else
+        type = 2;
+
+    if (type == 0) {
+        *px = A[0];
+        *py = A[1];
+    } else if (type == 1) {
+        *px = B[0];
+        *py = B[1];
+    } else {
+        /* special case for first (slice) line */
+        if (s->first_slice_line) {
+            *px = A[0];
+            *py = A[1];
+        } else {
+            *px = mid_pred(A[0], B[0], C[0]);
+            *py = mid_pred(A[1], B[1], C[1]);
+        }
+    }
+
+    return mot_val;
+}
+
+static inline int wmv2_decode_inter_block(Wmv2Context *w, int16_t *block,
+                                          int n, int cbp)
+{
+    MpegEncContext *const s = &w->s;
+    static const int sub_cbp_table[3] = { 2, 3, 1 };
+    int sub_cbp;
+
+    if (!cbp) {
+        s->block_last_index[n] = -1;
+        return 0;
+    }
+
+    if (w->per_block_abt)
+        w->abt_type = decode012(&s->gb);
+    w->abt_type_table[n] = w->abt_type;
+
+    if (w->abt_type) {
+//        const uint8_t *scantable = w->abt_scantable[w->abt_type - 1].permutated;
+        const uint8_t *scantable = w->abt_scantable[w->abt_type - 1].scantable;
+//        const uint8_t *scantable = w->abt_type - 1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
+
+        sub_cbp = sub_cbp_table[decode012(&s->gb)];
+
+        if (sub_cbp & 1)
+            if (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
+                return -1;
+
+        if (sub_cbp & 2)
+            if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
+                return -1;
+
+        s->block_last_index[n] = 63;
+
+        return 0;
+    } else {
+        return ff_msmpeg4_decode_block(s, block, n, 1,
+                                       s->inter_scantable.permutated);
+    }
+}
+
+int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64])
+{
+    Wmv2Context *const w = (Wmv2Context *) s;
+    int cbp, code, i;
+    uint8_t *coded_val;
+
+    if (w->j_type)
+        return 0;
+
+    if (s->pict_type == AV_PICTURE_TYPE_P) {
+        if (IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])) {
+            /* skip mb */
+            s->mb_intra = 0;
+            for (i = 0; i < 6; i++)
+                s->block_last_index[i] = -1;
+            s->mv_dir      = MV_DIR_FORWARD;
+            s->mv_type     = MV_TYPE_16X16;
+            s->mv[0][0][0] = 0;
+            s->mv[0][0][1] = 0;
+            s->mb_skipped  = 1;
+            w->hshift      = 0;
+            return 0;
+        }
+
+        code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[w->cbp_table_index].table,
+                        MB_NON_INTRA_VLC_BITS, 3);
+        if (code < 0)
+            return -1;
+        s->mb_intra = (~code & 0x40) >> 6;
+
+        cbp = code & 0x3f;
+    } else {
+        s->mb_intra = 1;
+        code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+        if (code < 0) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
+            return -1;
+        }
+        /* predict coded block pattern */
+        cbp = 0;
+        for (i = 0; i < 6; i++) {
+            int val = ((code >> (5 - i)) & 1);
+            if (i < 4) {
+                int pred   = ff_msmpeg4_coded_block_pred(s, i, &coded_val);
+                val        = val ^ pred;
+                *coded_val = val;
+            }
+            cbp |= val << (5 - i);
+        }
+    }
+
+    if (!s->mb_intra) {
+        int mx, my;
+        wmv2_pred_motion(w, &mx, &my);
+
+        if (cbp) {
+            s->bdsp.clear_blocks(s->block[0]);
+            if (s->per_mb_rl_table) {
+                s->rl_table_index        = decode012(&s->gb);
+                s->rl_chroma_table_index = s->rl_table_index;
+            }
+
+            if (w->abt_flag && w->per_mb_abt) {
+                w->per_block_abt = get_bits1(&s->gb);
+                if (!w->per_block_abt)
+                    w->abt_type = decode012(&s->gb);
+            } else
+                w->per_block_abt = 0;
+        }
+
+        if (wmv2_decode_motion(w, &mx, &my) < 0)
+            return -1;
+
+        s->mv_dir      = MV_DIR_FORWARD;
+        s->mv_type     = MV_TYPE_16X16;
+        s->mv[0][0][0] = mx;
+        s->mv[0][0][1] = my;
+
+        for (i = 0; i < 6; i++) {
+            if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "\nerror while decoding inter block: %d x %d (%d)\n",
+                       s->mb_x, s->mb_y, i);
+                return -1;
+            }
+        }
+    } else {
+        if (s->pict_type == AV_PICTURE_TYPE_P)
+            av_dlog(s->avctx, "%d%d ", s->inter_intra_pred, cbp);
+        av_dlog(s->avctx, "I at %d %d %d %06X\n", s->mb_x, s->mb_y,
+                ((cbp & 3) ? 1 : 0) + ((cbp & 0x3C) ? 2 : 0),
+                show_bits(&s->gb, 24));
+        s->ac_pred = get_bits1(&s->gb);
+        if (s->inter_intra_pred) {
+            s->h263_aic_dir = get_vlc2(&s->gb, ff_inter_intra_vlc.table,
+                                       INTER_INTRA_VLC_BITS, 1);
+            av_dlog(s->avctx, "%d%d %d %d/",
+                    s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
+        }
+        if (s->per_mb_rl_table && cbp) {
+            s->rl_table_index        = decode012(&s->gb);
+            s->rl_chroma_table_index = s->rl_table_index;
+        }
+
+        s->bdsp.clear_blocks(s->block[0]);
+        for (i = 0; i < 6; i++) {
+            if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "\nerror while decoding intra block: %d x %d (%d)\n",
+                       s->mb_x, s->mb_y, i);
+                return -1;
+            }
+        }
+    }
+
+    return 0;
+}
+
+static av_cold int wmv2_decode_init(AVCodecContext *avctx)
+{
+    Wmv2Context *const w = avctx->priv_data;
+
+    if (ff_msmpeg4_decode_init(avctx) < 0)
+        return -1;
+
+    ff_wmv2_common_init(w);
+
+    ff_intrax8_common_init(&w->x8, &w->s);
+
+    return 0;
+}
+
+static av_cold int wmv2_decode_end(AVCodecContext *avctx)
+{
+    Wmv2Context *w = avctx->priv_data;
+
+    ff_intrax8_common_end(&w->x8);
+    return ff_h263_decode_end(avctx);
+}
+
+AVCodec ff_wmv2_decoder = {
+    .name           = "wmv2",
+    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_WMV2,
+    .priv_data_size = sizeof(Wmv2Context),
+    .init           = wmv2_decode_init,
+    .close          = wmv2_decode_end,
+    .decode         = ff_h263_decode_frame,
+    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                     AV_PIX_FMT_NONE },
+};
index 9da2b3f..e4e51d3 100644 (file)
  */
 
 #include "avcodec.h"
+#include "h263.h"
 #include "mpegvideo.h"
 #include "msmpeg4.h"
 #include "msmpeg4data.h"
-#include "h263.h"
 #include "wmv2.h"
 
 
-static int encode_ext_header(Wmv2Context *w){
-    MpegEncContext * const s= &w->s;
+static int encode_ext_header(Wmv2Context *w)
+{
+    MpegEncContext *const s = &w->s;
     PutBitContext pb;
     int code;
 
     init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
 
-    put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
-    put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
+    put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); // yes 29.97 -> 29
+    put_bits(&pb, 11, FFMIN(s->bit_rate / 1024, 2047));
 
-    put_bits(&pb, 1, w->mspel_bit=1);
+    put_bits(&pb, 1, w->mspel_bit        = 1);
     put_bits(&pb, 1, s->loop_filter);
-    put_bits(&pb, 1, w->abt_flag=1);
-    put_bits(&pb, 1, w->j_type_bit=1);
-    put_bits(&pb, 1, w->top_left_mv_flag=0);
-    put_bits(&pb, 1, w->per_mb_rl_bit=1);
-    put_bits(&pb, 3, code=1);
+    put_bits(&pb, 1, w->abt_flag         = 1);
+    put_bits(&pb, 1, w->j_type_bit       = 1);
+    put_bits(&pb, 1, w->top_left_mv_flag = 0);
+    put_bits(&pb, 1, w->per_mb_rl_bit    = 1);
+    put_bits(&pb, 3, code                = 1);
 
     flush_put_bits(&pb);
 
@@ -51,94 +52,97 @@ static int encode_ext_header(Wmv2Context *w){
     return 0;
 }
 
-static av_cold int wmv2_encode_init(AVCodecContext *avctx){
-    Wmv2Context * const w= avctx->priv_data;
+static av_cold int wmv2_encode_init(AVCodecContext *avctx)
+{
+    Wmv2Context *const w = avctx->priv_data;
 
     if (ff_mpv_encode_init(avctx) < 0)
         return -1;
 
     ff_wmv2_common_init(w);
 
-    avctx->extradata_size= 4;
-    avctx->extradata= av_mallocz(avctx->extradata_size + 10);
+    avctx->extradata_size = 4;
+    avctx->extradata      = av_mallocz(avctx->extradata_size + 10);
     encode_ext_header(w);
 
     return 0;
 }
 
-int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
+int ff_wmv2_encode_picture_header(MpegEncContext *s, int picture_number)
 {
-    Wmv2Context * const w= (Wmv2Context*)s;
+    Wmv2Context *const w = (Wmv2Context *) s;
 
     put_bits(&s->pb, 1, s->pict_type - 1);
-    if(s->pict_type == AV_PICTURE_TYPE_I){
+    if (s->pict_type == AV_PICTURE_TYPE_I)
         put_bits(&s->pb, 7, 0);
-    }
     put_bits(&s->pb, 5, s->qscale);
 
-    s->dc_table_index = 1;
-    s->mv_table_index = 1; /* only if P frame */
+    s->dc_table_index  = 1;
+    s->mv_table_index  = 1; /* only if P frame */
     s->per_mb_rl_table = 0;
-    s->mspel= 0;
-    w->per_mb_abt=0;
-    w->abt_type=0;
-    w->j_type=0;
+    s->mspel           = 0;
+    w->per_mb_abt      = 0;
+    w->abt_type        = 0;
+    w->j_type          = 0;
 
     assert(s->flipflop_rounding);
 
     if (s->pict_type == AV_PICTURE_TYPE_I) {
-        assert(s->no_rounding==1);
-        if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
+        assert(s->no_rounding == 1);
+        if (w->j_type_bit)
+            put_bits(&s->pb, 1, w->j_type);
 
-        if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
+        if (w->per_mb_rl_bit)
+            put_bits(&s->pb, 1, s->per_mb_rl_table);
 
-        if(!s->per_mb_rl_table){
+        if (!s->per_mb_rl_table) {
             ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
             ff_msmpeg4_code012(&s->pb, s->rl_table_index);
         }
 
         put_bits(&s->pb, 1, s->dc_table_index);
 
-        s->inter_intra_pred= 0;
-    }else{
+        s->inter_intra_pred = 0;
+    } else {
         int cbp_index;
 
         put_bits(&s->pb, 2, SKIP_TYPE_NONE);
 
-        ff_msmpeg4_code012(&s->pb, cbp_index=0);
-        if(s->qscale <= 10){
-            int map[3]= {0,2,1};
-            w->cbp_table_index= map[cbp_index];
-        }else if(s->qscale <= 20){
-            int map[3]= {1,0,2};
-            w->cbp_table_index= map[cbp_index];
-        }else{
-            int map[3]= {2,1,0};
-            w->cbp_table_index= map[cbp_index];
+        ff_msmpeg4_code012(&s->pb, cbp_index = 0);
+        if (s->qscale <= 10) {
+            int map[3]         = { 0, 2, 1 };
+            w->cbp_table_index = map[cbp_index];
+        } else if (s->qscale <= 20) {
+            int map[3]         = { 1, 0, 2 };
+            w->cbp_table_index = map[cbp_index];
+        } else {
+            int map[3]         = { 2, 1, 0 };
+            w->cbp_table_index = map[cbp_index];
         }
 
-        if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
+        if (w->mspel_bit)
+            put_bits(&s->pb, 1, s->mspel);
 
-        if(w->abt_flag){
-            put_bits(&s->pb, 1, w->per_mb_abt^1);
-            if(!w->per_mb_abt){
+        if (w->abt_flag) {
+            put_bits(&s->pb, 1, w->per_mb_abt ^ 1);
+            if (!w->per_mb_abt)
                 ff_msmpeg4_code012(&s->pb, w->abt_type);
-            }
         }
 
-        if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
+        if (w->per_mb_rl_bit)
+            put_bits(&s->pb, 1, s->per_mb_rl_table);
 
-        if(!s->per_mb_rl_table){
+        if (!s->per_mb_rl_table) {
             ff_msmpeg4_code012(&s->pb, s->rl_table_index);
             s->rl_chroma_table_index = s->rl_table_index;
         }
         put_bits(&s->pb, 1, s->dc_table_index);
         put_bits(&s->pb, 1, s->mv_table_index);
 
-        s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
+        s->inter_intra_pred = 0; // (s->width * s->height < 320 * 240 && s->bit_rate <= II_BITRATE);
     }
-    s->esc3_level_length= 0;
-    s->esc3_run_length= 0;
+    s->esc3_level_length = 0;
+    s->esc3_run_length   = 0;
 
     return 0;
 }
@@ -146,11 +150,10 @@ int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
 /* Nearly identical to wmv1 but that is just because we do not use the
  * useless M$ crap features. It is duplicated here in case someone wants
  * to add support for these crap features. */
-void ff_wmv2_encode_mb(MpegEncContext * s,
-                       int16_t block[6][64],
+void ff_wmv2_encode_mb(MpegEncContext *s, int16_t block[6][64],
                        int motion_x, int motion_y)
 {
-    Wmv2Context * const w= (Wmv2Context*)s;
+    Wmv2Context *const w = (Wmv2Context *) s;
     int cbp, coded_cbp, i;
     int pred_x, pred_y;
     uint8_t *coded_block;
@@ -160,10 +163,9 @@ void ff_wmv2_encode_mb(MpegEncContext * s,
     if (!s->mb_intra) {
         /* compute cbp */
         cbp = 0;
-        for (i = 0; i < 6; i++) {
+        for (i = 0; i < 6; i++)
             if (s->block_last_index[i] >= 0)
                 cbp |= 1 << (5 - i);
-        }
 
         put_bits(&s->pb,
                  ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
@@ -172,42 +174,43 @@ void ff_wmv2_encode_mb(MpegEncContext * s,
         /* motion vector */
         ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
         ff_msmpeg4_encode_motion(s, motion_x - pred_x,
-                              motion_y - pred_y);
+                                 motion_y - pred_y);
     } else {
         /* compute cbp */
-        cbp = 0;
+        cbp       = 0;
         coded_cbp = 0;
         for (i = 0; i < 6; i++) {
             int val, pred;
-            val = (s->block_last_index[i] >= 1);
+            val  = (s->block_last_index[i] >= 1);
             cbp |= val << (5 - i);
             if (i < 4) {
                 /* predict value for close blocks only for luma */
-                pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
+                pred         = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
                 *coded_block = val;
-                val = val ^ pred;
+                val          = val ^ pred;
             }
             coded_cbp |= val << (5 - i);
         }
 
-        if (s->pict_type == AV_PICTURE_TYPE_I) {
+        if (s->pict_type == AV_PICTURE_TYPE_I)
             put_bits(&s->pb,
-                     ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
-        } else {
+                     ff_msmp4_mb_i_table[coded_cbp][1],
+                     ff_msmp4_mb_i_table[coded_cbp][0]);
+        else
             put_bits(&s->pb,
                      ff_wmv2_inter_table[w->cbp_table_index][cbp][1],
                      ff_wmv2_inter_table[w->cbp_table_index][cbp][0]);
-        }
         put_bits(&s->pb, 1, 0);         /* no AC prediction yet */
-        if(s->inter_intra_pred){
-            s->h263_aic_dir=0;
-            put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
+        if (s->inter_intra_pred) {
+            s->h263_aic_dir = 0;
+            put_bits(&s->pb,
+                     ff_table_inter_intra[s->h263_aic_dir][1],
+                     ff_table_inter_intra[s->h263_aic_dir][0]);
         }
     }
 
-    for (i = 0; i < 6; i++) {
+    for (i = 0; i < 6; i++)
         ff_msmpeg4_encode_block(s, block[i], i);
-    }
 }
 
 AVCodec ff_wmv2_encoder = {
@@ -219,5 +222,6 @@ AVCodec ff_wmv2_encoder = {
     .init           = wmv2_encode_init,
     .encode2        = ff_mpv_encode_picture,
     .close          = ff_mpv_encode_end,
-    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                     AV_PIX_FMT_NONE },
 };