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 "mpegvideo.h" 24#include "msmpeg4data.h" 25#include "simple_idct.h" 26#include "wmv2.h" 27 28 29av_cold void ff_wmv2_common_init(Wmv2Context * w){ 30 MpegEncContext * const s= &w->s; 31 32 ff_blockdsp_init(&s->bdsp, s->avctx); 33 ff_wmv2dsp_init(&w->wdsp); 34 s->idsp.idct_permutation_type = w->wdsp.idct_perm; 35 ff_init_scantable_permutation(s->idsp.idct_permutation, 36 w->wdsp.idct_perm); 37 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0], 38 ff_wmv2_scantableA); 39 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1], 40 ff_wmv2_scantableB); 41 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, 42 ff_wmv1_scantable[1]); 43 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, 44 ff_wmv1_scantable[2]); 45 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, 46 ff_wmv1_scantable[3]); 47 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, 48 ff_wmv1_scantable[0]); 49 s->idsp.idct_put = w->wdsp.idct_put; 50 s->idsp.idct_add = w->wdsp.idct_add; 51 s->idsp.idct = NULL; 52} 53 54static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n){ 55 MpegEncContext * const s= &w->s; 56 57 if (s->block_last_index[n] >= 0) { 58 switch(w->abt_type_table[n]){ 59 case 0: 60 w->wdsp.idct_add(dst, stride, block1); 61 break; 62 case 1: 63 ff_simple_idct84_add(dst , stride, block1); 64 ff_simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]); 65 s->bdsp.clear_block(w->abt_block2[n]); 66 break; 67 case 2: 68 ff_simple_idct48_add(dst , stride, block1); 69 ff_simple_idct48_add(dst + 4 , stride, w->abt_block2[n]); 70 s->bdsp.clear_block(w->abt_block2[n]); 71 break; 72 default: 73 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n"); 74 } 75 } 76} 77 78void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){ 79 Wmv2Context * const w= (Wmv2Context*)s; 80 81 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0); 82 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1); 83 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2); 84 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3); 85 86 if(s->flags&CODEC_FLAG_GRAY) return; 87 88 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4); 89 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5); 90} 91 92void ff_mspel_motion(MpegEncContext *s, 93 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, 94 uint8_t **ref_picture, op_pixels_func (*pix_op)[4], 95 int motion_x, int motion_y, int h) 96{ 97 Wmv2Context * const w= (Wmv2Context*)s; 98 uint8_t *ptr; 99 int dxy, mx, my, src_x, src_y, v_edge_pos; 100 ptrdiff_t offset, linesize, uvlinesize; 101 int emu=0; 102 103 dxy = ((motion_y & 1) << 1) | (motion_x & 1); 104 dxy = 2*dxy + w->hshift; 105 src_x = s->mb_x * 16 + (motion_x >> 1); 106 src_y = s->mb_y * 16 + (motion_y >> 1); 107 108 /* WARNING: do no forget half pels */ 109 v_edge_pos = s->v_edge_pos; 110 src_x = av_clip(src_x, -16, s->width); 111 src_y = av_clip(src_y, -16, s->height); 112 113 if(src_x<=-16 || src_x >= s->width) 114 dxy &= ~3; 115 if(src_y<=-16 || src_y >= s->height) 116 dxy &= ~4; 117 118 linesize = s->linesize; 119 uvlinesize = s->uvlinesize; 120 ptr = ref_picture[0] + (src_y * linesize) + src_x; 121 122 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos 123 || src_y + h+1 >= v_edge_pos){ 124 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, 125 ptr - 1 - s->linesize, 126 s->linesize, s->linesize, 127 19, 19, 128 src_x - 1, src_y - 1, 129 s->h_edge_pos, s->v_edge_pos); 130 ptr= s->edge_emu_buffer + 1 + s->linesize; 131 emu=1; 132 } 133 134 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize); 135 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize); 136 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize); 137 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize); 138 139 if(s->flags&CODEC_FLAG_GRAY) return; 140 141 dxy = 0; 142 if ((motion_x & 3) != 0) 143 dxy |= 1; 144 if ((motion_y & 3) != 0) 145 dxy |= 2; 146 mx = motion_x >> 2; 147 my = motion_y >> 2; 148 149 src_x = s->mb_x * 8 + mx; 150 src_y = s->mb_y * 8 + my; 151 src_x = av_clip(src_x, -8, s->width >> 1); 152 if (src_x == (s->width >> 1)) 153 dxy &= ~1; 154 src_y = av_clip(src_y, -8, s->height >> 1); 155 if (src_y == (s->height >> 1)) 156 dxy &= ~2; 157 offset = (src_y * uvlinesize) + src_x; 158 ptr = ref_picture[1] + offset; 159 if(emu){ 160 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, 161 s->uvlinesize, s->uvlinesize, 162 9, 9, 163 src_x, src_y, 164 s->h_edge_pos >> 1, s->v_edge_pos >> 1); 165 ptr= s->edge_emu_buffer; 166 } 167 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1); 168 169 ptr = ref_picture[2] + offset; 170 if(emu){ 171 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, 172 s->uvlinesize, s->uvlinesize, 173 9, 9, 174 src_x, src_y, 175 s->h_edge_pos >> 1, s->v_edge_pos >> 1); 176 ptr= s->edge_emu_buffer; 177 } 178 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1); 179} 180