| /* |
| * Copyright (c) 2002 The FFmpeg Project |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avcodec.h" |
| #include "mpegvideo.h" |
| #include "msmpeg4data.h" |
| #include "simple_idct.h" |
| #include "wmv2.h" |
| |
| |
| av_cold void ff_wmv2_common_init(Wmv2Context * w){ |
| MpegEncContext * const s= &w->s; |
| |
| ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA); |
| ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB); |
| } |
| |
| static void wmv2_add_block(Wmv2Context *w, DCTELEM *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: |
| s->dsp.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->dsp.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->dsp.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, DCTELEM 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); |
| |
| 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); |
| } |
| |
| 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; |
| uint8_t *ptr; |
| int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize; |
| int emu=0; |
| |
| 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); |
| |
| if(src_x<=-16 || src_x >= s->width) |
| dxy &= ~3; |
| 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(s->flags&CODEC_FLAG_EMU_EDGE){ |
| if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos |
| || src_y + h+1 >= v_edge_pos){ |
| ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - 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; |
| } |
| } |
| |
| s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize); |
| s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize); |
| s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize); |
| s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize); |
| |
| if(s->flags&CODEC_FLAG_GRAY) return; |
| |
| if (s->out_format == FMT_H263) { |
| dxy = 0; |
| if ((motion_x & 3) != 0) |
| dxy |= 1; |
| if ((motion_y & 3) != 0) |
| dxy |= 2; |
| mx = motion_x >> 2; |
| my = motion_y >> 2; |
| } else { |
| mx = motion_x / 2; |
| my = motion_y / 2; |
| dxy = ((my & 1) << 1) | (mx & 1); |
| mx >>= 1; |
| my >>= 1; |
| } |
| |
| src_x = s->mb_x * 8 + mx; |
| src_y = s->mb_y * 8 + my; |
| src_x = av_clip(src_x, -8, s->width >> 1); |
| if (src_x == (s->width >> 1)) |
| dxy &= ~1; |
| src_y = av_clip(src_y, -8, s->height >> 1); |
| if (src_y == (s->height >> 1)) |
| dxy &= ~2; |
| offset = (src_y * uvlinesize) + src_x; |
| ptr = ref_picture[1] + offset; |
| if(emu){ |
| ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, |
| src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1); |
| ptr= s->edge_emu_buffer; |
| } |
| pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1); |
| |
| ptr = ref_picture[2] + offset; |
| if(emu){ |
| ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, |
| src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1); |
| ptr= s->edge_emu_buffer; |
| } |
| pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1); |
| } |