static inline void qpel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_based, int bottom_field, int field_select, uint8_t **ref_picture, op_pixels_func (*pix_op)[4], qpel_mc_func (*qpix_op)[16], int motion_x, int motion_y, int h) { uint8_t *ptr_y, *ptr_cb, *ptr_cr; int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos; ptrdiff_t linesize, uvlinesize; dxy = ((motion_y & 3) << 2) | (motion_x & 3); src_x = s->mb_x * 16 + (motion_x >> 2); src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2); v_edge_pos = s->v_edge_pos >> field_based; linesize = s->linesize << field_based; uvlinesize = s->uvlinesize << field_based; if (field_based) { mx = motion_x / 2; my = motion_y >> 1; } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) { static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 }; mx = (motion_x >> 1) + rtab[motion_x & 7]; my = (motion_y >> 1) + rtab[motion_y & 7]; } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) { mx = (motion_x >> 1) | (motion_x & 1); my = (motion_y >> 1) | (motion_y & 1); } else { mx = motion_x / 2; my = motion_y / 2; } mx = (mx >> 1) | (mx & 1); my = (my >> 1) | (my & 1); uvdxy = (mx & 1) | ((my & 1) << 1); mx >>= 1; my >>= 1; uvsrc_x = s->mb_x * 8 + mx; uvsrc_y = s->mb_y * (8 >> field_based) + my; ptr_y = ref_picture[0] + src_y * linesize + src_x; ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x; ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x; if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 16, 0) || (unsigned)src_y > FFMAX(v_edge_pos - (motion_y & 3) - h, 0)) { s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y, s->linesize, s->linesize, 17, 17 + field_based, src_x, src_y << field_based, s->h_edge_pos, s->v_edge_pos); ptr_y = s->sc.edge_emu_buffer; if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { uint8_t *uvbuf = s->sc.edge_emu_buffer + 18 * s->linesize; s->vdsp.emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize, s->uvlinesize, 9, 9 + field_based, uvsrc_x, uvsrc_y << field_based, s->h_edge_pos >> 1, s->v_edge_pos >> 1); s->vdsp.emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize, s->uvlinesize, 9, 9 + field_based, uvsrc_x, uvsrc_y << field_based, s->h_edge_pos >> 1, s->v_edge_pos >> 1); ptr_cb = uvbuf; ptr_cr = uvbuf + 16; } } if (!field_based) qpix_op[0][dxy](dest_y, ptr_y, linesize); else { if (bottom_field) { dest_y += s->linesize; dest_cb += s->uvlinesize; dest_cr += s->uvlinesize; } if (field_select) { ptr_y += s->linesize; ptr_cb += s->uvlinesize; ptr_cr += s->uvlinesize; } // damn interlaced mode // FIXME boundary mirroring is not exactly correct here qpix_op[1][dxy](dest_y, ptr_y, linesize); qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize); } if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1); pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1); } }