LCOV - code coverage report
Current view: top level - libavcodec - wmv2.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 99 104 95.2 %
Date: 2017-12-17 16:07:53 Functions: 4 4 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2002 The FFmpeg Project
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #include "avcodec.h"
      22             : #include "idctdsp.h"
      23             : #include "mpegutils.h"
      24             : #include "mpegvideo.h"
      25             : #include "msmpeg4data.h"
      26             : #include "simple_idct.h"
      27             : #include "wmv2.h"
      28             : #include "wmv2data.h"
      29             : 
      30             : 
      31          16 : av_cold void ff_wmv2_common_init(Wmv2Context *w)
      32             : {
      33          16 :     MpegEncContext *const s = &w->s;
      34             : 
      35          16 :     ff_blockdsp_init(&s->bdsp, s->avctx);
      36          16 :     ff_wmv2dsp_init(&w->wdsp);
      37          16 :     s->idsp.perm_type = w->wdsp.idct_perm;
      38          16 :     ff_init_scantable_permutation(s->idsp.idct_permutation,
      39          16 :                                   w->wdsp.idct_perm);
      40          16 :     ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
      41             :                       ff_wmv2_scantableA);
      42          16 :     ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
      43             :                       ff_wmv2_scantableB);
      44          16 :     ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
      45             :                       ff_wmv1_scantable[1]);
      46          16 :     ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
      47             :                       ff_wmv1_scantable[2]);
      48          16 :     ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
      49             :                       ff_wmv1_scantable[3]);
      50          16 :     ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
      51             :                       ff_wmv1_scantable[0]);
      52          16 :     s->idsp.idct_put = w->wdsp.idct_put;
      53          16 :     s->idsp.idct_add = w->wdsp.idct_add;
      54          16 :     s->idsp.idct     = NULL;
      55          16 : }
      56             : 
      57     1140894 : static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
      58             :                            uint8_t *dst, int stride, int n)
      59             : {
      60     1140894 :     MpegEncContext *const s = &w->s;
      61             : 
      62     1140894 :     if (s->block_last_index[n] >= 0) {
      63      180589 :         switch (w->abt_type_table[n]) {
      64      149142 :         case 0:
      65      149142 :             w->wdsp.idct_add(dst, stride, block1);
      66      149142 :             break;
      67       16469 :         case 1:
      68       16469 :             ff_simple_idct84_add(dst, stride, block1);
      69       16469 :             ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
      70       16469 :             s->bdsp.clear_block(w->abt_block2[n]);
      71       16469 :             break;
      72       14978 :         case 2:
      73       14978 :             ff_simple_idct48_add(dst, stride, block1);
      74       14978 :             ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]);
      75       14978 :             s->bdsp.clear_block(w->abt_block2[n]);
      76       14978 :             break;
      77           0 :         default:
      78           0 :             av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
      79             :         }
      80      960305 :     }
      81     1140894 : }
      82             : 
      83      190149 : void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64],
      84             :                     uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
      85             : {
      86      190149 :     Wmv2Context *const w = (Wmv2Context *) s;
      87             : 
      88      190149 :     wmv2_add_block(w, block1[0], dest_y,                       s->linesize, 0);
      89      190149 :     wmv2_add_block(w, block1[1], dest_y + 8,                   s->linesize, 1);
      90      190149 :     wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize,     s->linesize, 2);
      91      190149 :     wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);
      92             : 
      93      190149 :     if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
      94           0 :         return;
      95             : 
      96      190149 :     wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
      97      190149 :     wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
      98             : }
      99             : 
     100       80493 : void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
     101             :                      uint8_t *dest_cb, uint8_t *dest_cr,
     102             :                      uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
     103             :                      int motion_x, int motion_y, int h)
     104             : {
     105       80493 :     Wmv2Context *const w = (Wmv2Context *) s;
     106             :     uint8_t *ptr;
     107             :     int dxy, mx, my, src_x, src_y, v_edge_pos;
     108             :     ptrdiff_t offset, linesize, uvlinesize;
     109       80493 :     int emu = 0;
     110             : 
     111       80493 :     dxy   = ((motion_y & 1) << 1) | (motion_x & 1);
     112       80493 :     dxy   = 2 * dxy + w->hshift;
     113       80493 :     src_x = s->mb_x * 16 + (motion_x >> 1);
     114       80493 :     src_y = s->mb_y * 16 + (motion_y >> 1);
     115             : 
     116             :     /* WARNING: do no forget half pels */
     117       80493 :     v_edge_pos = s->v_edge_pos;
     118       80493 :     src_x      = av_clip(src_x, -16, s->width);
     119       80493 :     src_y      = av_clip(src_y, -16, s->height);
     120             : 
     121       80493 :     if (src_x <= -16 || src_x >= s->width)
     122           1 :         dxy &= ~3;
     123       80493 :     if (src_y <= -16 || src_y >= s->height)
     124           1 :         dxy &= ~4;
     125             : 
     126       80493 :     linesize   = s->linesize;
     127       80493 :     uvlinesize = s->uvlinesize;
     128       80493 :     ptr        = ref_picture[0] + (src_y * linesize) + src_x;
     129             : 
     130      148213 :     if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
     131       67720 :         src_y + h + 1 >= v_edge_pos) {
     132       17610 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
     133             :                                  s->linesize, s->linesize, 19, 19,
     134             :                                  src_x - 1, src_y - 1,
     135             :                                  s->h_edge_pos, s->v_edge_pos);
     136       17610 :         ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
     137       17610 :         emu = 1;
     138             :     }
     139             : 
     140       80493 :     w->wdsp.put_mspel_pixels_tab[dxy](dest_y,                    ptr,                    linesize);
     141       80493 :     w->wdsp.put_mspel_pixels_tab[dxy](dest_y     + 8,            ptr     + 8,            linesize);
     142       80493 :     w->wdsp.put_mspel_pixels_tab[dxy](dest_y     + 8 * linesize, ptr     + 8 * linesize, linesize);
     143       80493 :     w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
     144             : 
     145       80493 :     if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
     146           0 :         return;
     147             : 
     148       80493 :     dxy = 0;
     149       80493 :     if ((motion_x & 3) != 0)
     150       22071 :         dxy |= 1;
     151       80493 :     if ((motion_y & 3) != 0)
     152       11804 :         dxy |= 2;
     153       80493 :     mx = motion_x >> 2;
     154       80493 :     my = motion_y >> 2;
     155             : 
     156       80493 :     src_x = s->mb_x * 8 + mx;
     157       80493 :     src_y = s->mb_y * 8 + my;
     158       80493 :     src_x = av_clip(src_x, -8, s->width >> 1);
     159       80493 :     if (src_x == (s->width >> 1))
     160           0 :         dxy &= ~1;
     161       80493 :     src_y = av_clip(src_y, -8, s->height >> 1);
     162       80493 :     if (src_y == (s->height >> 1))
     163           1 :         dxy &= ~2;
     164       80493 :     offset = (src_y * uvlinesize) + src_x;
     165       80493 :     ptr    = ref_picture[1] + offset;
     166       80493 :     if (emu) {
     167       52830 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
     168             :                                  s->uvlinesize, s->uvlinesize,
     169             :                                  9, 9,
     170             :                                  src_x, src_y,
     171       35220 :                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
     172       17610 :         ptr = s->sc.edge_emu_buffer;
     173             :     }
     174       80493 :     pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
     175             : 
     176       80493 :     ptr = ref_picture[2] + offset;
     177       80493 :     if (emu) {
     178       52830 :         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
     179             :                                  s->uvlinesize, s->uvlinesize,
     180             :                                  9, 9,
     181             :                                  src_x, src_y,
     182       35220 :                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
     183       17610 :         ptr = s->sc.edge_emu_buffer;
     184             :     }
     185       80493 :     pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
     186             : }

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