| 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 | |
| 29 | av_cold void ff_wmv2_common_init(Wmv2Context *w) |
| 30 | { |
| 31 | MpegEncContext *const s = &w->s; |
| 32 | |
| 33 | ff_blockdsp_init(&s->bdsp, s->avctx); |
| 34 | ff_wmv2dsp_init(&w->wdsp); |
| 35 | s->idsp.perm_type = w->wdsp.idct_perm; |
| 36 | ff_init_scantable_permutation(s->idsp.idct_permutation, |
| 37 | w->wdsp.idct_perm); |
| 38 | ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0], |
| 39 | ff_wmv2_scantableA); |
| 40 | ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1], |
| 41 | ff_wmv2_scantableB); |
| 42 | ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, |
| 43 | ff_wmv1_scantable[1]); |
| 44 | ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, |
| 45 | ff_wmv1_scantable[2]); |
| 46 | ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, |
| 47 | ff_wmv1_scantable[3]); |
| 48 | ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, |
| 49 | ff_wmv1_scantable[0]); |
| 50 | s->idsp.idct_put = w->wdsp.idct_put; |
| 51 | s->idsp.idct_add = w->wdsp.idct_add; |
| 52 | s->idsp.idct = NULL; |
| 53 | } |
| 54 | |
| 55 | static void wmv2_add_block(Wmv2Context *w, int16_t *block1, |
| 56 | uint8_t *dst, int stride, int n) |
| 57 | { |
| 58 | MpegEncContext *const s = &w->s; |
| 59 | |
| 60 | if (s->block_last_index[n] >= 0) { |
| 61 | switch (w->abt_type_table[n]) { |
| 62 | case 0: |
| 63 | w->wdsp.idct_add(dst, stride, block1); |
| 64 | break; |
| 65 | case 1: |
| 66 | ff_simple_idct84_add(dst, stride, block1); |
| 67 | ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]); |
| 68 | s->bdsp.clear_block(w->abt_block2[n]); |
| 69 | break; |
| 70 | case 2: |
| 71 | ff_simple_idct48_add(dst, stride, block1); |
| 72 | ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]); |
| 73 | s->bdsp.clear_block(w->abt_block2[n]); |
| 74 | break; |
| 75 | default: |
| 76 | av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n"); |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], |
| 82 | uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr) |
| 83 | { |
| 84 | Wmv2Context *const w = (Wmv2Context *) s; |
| 85 | |
| 86 | wmv2_add_block(w, block1[0], dest_y, s->linesize, 0); |
| 87 | wmv2_add_block(w, block1[1], dest_y + 8, s->linesize, 1); |
| 88 | wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize, s->linesize, 2); |
| 89 | wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3); |
| 90 | |
| 91 | if (s->flags & CODEC_FLAG_GRAY) |
| 92 | return; |
| 93 | |
| 94 | wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4); |
| 95 | wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5); |
| 96 | } |
| 97 | |
| 98 | void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y, |
| 99 | uint8_t *dest_cb, uint8_t *dest_cr, |
| 100 | uint8_t **ref_picture, op_pixels_func (*pix_op)[4], |
| 101 | int motion_x, int motion_y, int h) |
| 102 | { |
| 103 | Wmv2Context *const w = (Wmv2Context *) s; |
| 104 | uint8_t *ptr; |
| 105 | int dxy, mx, my, src_x, src_y, v_edge_pos; |
| 106 | ptrdiff_t offset, linesize, uvlinesize; |
| 107 | int emu = 0; |
| 108 | |
| 109 | dxy = ((motion_y & 1) << 1) | (motion_x & 1); |
| 110 | dxy = 2 * dxy + w->hshift; |
| 111 | src_x = s->mb_x * 16 + (motion_x >> 1); |
| 112 | src_y = s->mb_y * 16 + (motion_y >> 1); |
| 113 | |
| 114 | /* WARNING: do no forget half pels */ |
| 115 | v_edge_pos = s->v_edge_pos; |
| 116 | src_x = av_clip(src_x, -16, s->width); |
| 117 | src_y = av_clip(src_y, -16, s->height); |
| 118 | |
| 119 | if (src_x <= -16 || src_x >= s->width) |
| 120 | dxy &= ~3; |
| 121 | if (src_y <= -16 || src_y >= s->height) |
| 122 | dxy &= ~4; |
| 123 | |
| 124 | linesize = s->linesize; |
| 125 | uvlinesize = s->uvlinesize; |
| 126 | ptr = ref_picture[0] + (src_y * linesize) + src_x; |
| 127 | |
| 128 | if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos || |
| 129 | src_y + h + 1 >= v_edge_pos) { |
| 130 | s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, |
| 131 | s->linesize, s->linesize, 19, 19, |
| 132 | src_x - 1, src_y - 1, |
| 133 | s->h_edge_pos, s->v_edge_pos); |
| 134 | ptr = s->edge_emu_buffer + 1 + s->linesize; |
| 135 | emu = 1; |
| 136 | } |
| 137 | |
| 138 | w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize); |
| 139 | w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize); |
| 140 | w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize); |
| 141 | w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize); |
| 142 | |
| 143 | if (s->flags & CODEC_FLAG_GRAY) |
| 144 | return; |
| 145 | |
| 146 | dxy = 0; |
| 147 | if ((motion_x & 3) != 0) |
| 148 | dxy |= 1; |
| 149 | if ((motion_y & 3) != 0) |
| 150 | dxy |= 2; |
| 151 | mx = motion_x >> 2; |
| 152 | my = motion_y >> 2; |
| 153 | |
| 154 | src_x = s->mb_x * 8 + mx; |
| 155 | src_y = s->mb_y * 8 + my; |
| 156 | src_x = av_clip(src_x, -8, s->width >> 1); |
| 157 | if (src_x == (s->width >> 1)) |
| 158 | dxy &= ~1; |
| 159 | src_y = av_clip(src_y, -8, s->height >> 1); |
| 160 | if (src_y == (s->height >> 1)) |
| 161 | dxy &= ~2; |
| 162 | offset = (src_y * uvlinesize) + src_x; |
| 163 | ptr = ref_picture[1] + offset; |
| 164 | if (emu) { |
| 165 | s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, |
| 166 | s->uvlinesize, s->uvlinesize, |
| 167 | 9, 9, |
| 168 | src_x, src_y, |
| 169 | s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
| 170 | ptr = s->edge_emu_buffer; |
| 171 | } |
| 172 | pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1); |
| 173 | |
| 174 | ptr = ref_picture[2] + offset; |
| 175 | if (emu) { |
| 176 | s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, |
| 177 | s->uvlinesize, s->uvlinesize, |
| 178 | 9, 9, |
| 179 | src_x, src_y, |
| 180 | s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
| 181 | ptr = s->edge_emu_buffer; |
| 182 | } |
| 183 | pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1); |
| 184 | } |