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 "mpegvideo.h" 23#include "msmpeg4data.h" 24#include "simple_idct.h" 25#include "wmv2.h" 26 27 28av_cold void ff_wmv2_common_init(Wmv2Context * w){ 29 MpegEncContext * const s= &w->s; 30 31 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA); 32 ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB); 33} 34 35static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){ 36 MpegEncContext * const s= &w->s; 37 38 if (s->block_last_index[n] >= 0) { 39 switch(w->abt_type_table[n]){ 40 case 0: 41 s->dsp.idct_add (dst, stride, block1); 42 break; 43 case 1: 44 ff_simple_idct84_add(dst , stride, block1); 45 ff_simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]); 46 s->dsp.clear_block(w->abt_block2[n]); 47 break; 48 case 2: 49 ff_simple_idct48_add(dst , stride, block1); 50 ff_simple_idct48_add(dst + 4 , stride, w->abt_block2[n]); 51 s->dsp.clear_block(w->abt_block2[n]); 52 break; 53 default: 54 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n"); 55 } 56 } 57} 58 59void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){ 60 Wmv2Context * const w= (Wmv2Context*)s; 61 62 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0); 63 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1); 64 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2); 65 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3); 66 67 if(s->flags&CODEC_FLAG_GRAY) return; 68 69 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4); 70 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5); 71} 72 73void ff_mspel_motion(MpegEncContext *s, 74 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, 75 uint8_t **ref_picture, op_pixels_func (*pix_op)[4], 76 int motion_x, int motion_y, int h) 77{ 78 Wmv2Context * const w= (Wmv2Context*)s; 79 uint8_t *ptr; 80 int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize; 81 int emu=0; 82 83 dxy = ((motion_y & 1) << 1) | (motion_x & 1); 84 dxy = 2*dxy + w->hshift; 85 src_x = s->mb_x * 16 + (motion_x >> 1); 86 src_y = s->mb_y * 16 + (motion_y >> 1); 87 88 /* WARNING: do no forget half pels */ 89 v_edge_pos = s->v_edge_pos; 90 src_x = av_clip(src_x, -16, s->width); 91 src_y = av_clip(src_y, -16, s->height); 92 93 if(src_x<=-16 || src_x >= s->width) 94 dxy &= ~3; 95 if(src_y<=-16 || src_y >= s->height) 96 dxy &= ~4; 97 98 linesize = s->linesize; 99 uvlinesize = s->uvlinesize; 100 ptr = ref_picture[0] + (src_y * linesize) + src_x; 101 102 if(s->flags&CODEC_FLAG_EMU_EDGE){ 103 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos 104 || src_y + h+1 >= v_edge_pos){ 105 ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, s->linesize, 19, 19, 106 src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos); 107 ptr= s->edge_emu_buffer + 1 + s->linesize; 108 emu=1; 109 } 110 } 111 112 s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize); 113 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize); 114 s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize); 115 s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize); 116 117 if(s->flags&CODEC_FLAG_GRAY) return; 118 119 if (s->out_format == FMT_H263) { 120 dxy = 0; 121 if ((motion_x & 3) != 0) 122 dxy |= 1; 123 if ((motion_y & 3) != 0) 124 dxy |= 2; 125 mx = motion_x >> 2; 126 my = motion_y >> 2; 127 } else { 128 mx = motion_x / 2; 129 my = motion_y / 2; 130 dxy = ((my & 1) << 1) | (mx & 1); 131 mx >>= 1; 132 my >>= 1; 133 } 134 135 src_x = s->mb_x * 8 + mx; 136 src_y = s->mb_y * 8 + my; 137 src_x = av_clip(src_x, -8, s->width >> 1); 138 if (src_x == (s->width >> 1)) 139 dxy &= ~1; 140 src_y = av_clip(src_y, -8, s->height >> 1); 141 if (src_y == (s->height >> 1)) 142 dxy &= ~2; 143 offset = (src_y * uvlinesize) + src_x; 144 ptr = ref_picture[1] + offset; 145 if(emu){ 146 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, 147 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1); 148 ptr= s->edge_emu_buffer; 149 } 150 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1); 151 152 ptr = ref_picture[2] + offset; 153 if(emu){ 154 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, 155 src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1); 156 ptr= s->edge_emu_buffer; 157 } 158 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1); 159} 160