FFmpeg: libavcodec/h264_mc_template.c Source File

00001 /*
00002  * H.26L/H.264/AVC/JVT/14496-10/... decoder
00003  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #undef MCFUNC
00023 
00024 #if   CHROMA_IDC == 1
00025 #   define MCFUNC(n) FUNC(n ## _420)
00026 #elif CHROMA_IDC == 2
00027 #   define MCFUNC(n) FUNC(n ## _422)
00028 #elif CHROMA_IDC == 3
00029 #   define MCFUNC(n) FUNC(n ## _444)
00030 #endif
00031 
00032 #undef  mc_part
00033 #define mc_part MCFUNC(mc_part)
00034 
00035 static void mc_part(H264Context *h, int n, int square,
00036                     int height, int delta,
00037                     uint8_t *dest_y, uint8_t *dest_cb,
00038                     uint8_t *dest_cr,
00039                     int x_offset, int y_offset,
00040                     qpel_mc_func *qpix_put,
00041                     h264_chroma_mc_func chroma_put,
00042                     qpel_mc_func *qpix_avg,
00043                     h264_chroma_mc_func chroma_avg,
00044                     h264_weight_func *weight_op,
00045                     h264_biweight_func *weight_avg,
00046                     int list0, int list1)
00047 {
00048     if ((h->use_weight == 2 && list0 && list1 &&
00049          (h->implicit_weight[h->ref_cache[0][scan8[n]]][h->ref_cache[1][scan8[n]]][h->s.mb_y & 1] != 32)) ||
00050         h->use_weight == 1)
00051         mc_part_weighted(h, n, square, height, delta, dest_y, dest_cb, dest_cr,
00052                          x_offset, y_offset, qpix_put, chroma_put,
00053                          weight_op[0], weight_op[1], weight_avg[0],
00054                          weight_avg[1], list0, list1, PIXEL_SHIFT, CHROMA_IDC);
00055     else
00056         mc_part_std(h, n, square, height, delta, dest_y, dest_cb, dest_cr,
00057                     x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
00058                     chroma_avg, list0, list1, PIXEL_SHIFT, CHROMA_IDC);
00059 }
00060 
00061 static void MCFUNC(hl_motion)(H264Context *h, uint8_t *dest_y,
00062                               uint8_t *dest_cb, uint8_t *dest_cr,
00063                               qpel_mc_func(*qpix_put)[16],
00064                               h264_chroma_mc_func(*chroma_put),
00065                               qpel_mc_func(*qpix_avg)[16],
00066                               h264_chroma_mc_func(*chroma_avg),
00067                               h264_weight_func *weight_op,
00068                               h264_biweight_func *weight_avg)
00069 {
00070     MpegEncContext *const s = &h->s;
00071     const int mb_xy   = h->mb_xy;
00072     const int mb_type = s->current_picture.f.mb_type[mb_xy];
00073 
00074     av_assert2(IS_INTER(mb_type));
00075 
00076     if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
00077         await_references(h);
00078     prefetch_motion(h, 0, PIXEL_SHIFT, CHROMA_IDC);
00079 
00080     if (IS_16X16(mb_type)) {
00081         mc_part(h, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0,
00082                 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
00083                 weight_op, weight_avg,
00084                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
00085     } else if (IS_16X8(mb_type)) {
00086         mc_part(h, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0,
00087                 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
00088                 weight_op, weight_avg,
00089                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
00090         mc_part(h, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4,
00091                 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
00092                 weight_op, weight_avg,
00093                 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
00094     } else if (IS_8X16(mb_type)) {
00095         mc_part(h, 0, 0, 16, 8 * h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
00096                 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
00097                 &weight_op[1], &weight_avg[1],
00098                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
00099         mc_part(h, 4, 0, 16, 8 * h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
00100                 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
00101                 &weight_op[1], &weight_avg[1],
00102                 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
00103     } else {
00104         int i;
00105 
00106         av_assert2(IS_8X8(mb_type));
00107 
00108         for (i = 0; i < 4; i++) {
00109             const int sub_mb_type = h->sub_mb_type[i];
00110             const int n  = 4 * i;
00111             int x_offset = (i & 1) << 2;
00112             int y_offset = (i & 2) << 1;
00113 
00114             if (IS_SUB_8X8(sub_mb_type)) {
00115                 mc_part(h, n, 1, 8, 0, dest_y, dest_cb, dest_cr,
00116                         x_offset, y_offset,
00117                         qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
00118                         &weight_op[1], &weight_avg[1],
00119                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00120             } else if (IS_SUB_8X4(sub_mb_type)) {
00121                 mc_part(h, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr,
00122                         x_offset, y_offset,
00123                         qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
00124                         &weight_op[1], &weight_avg[1],
00125                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00126                 mc_part(h, n + 2, 0, 4, 4 << PIXEL_SHIFT,
00127                         dest_y, dest_cb, dest_cr, x_offset, y_offset + 2,
00128                         qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
00129                         &weight_op[1], &weight_avg[1],
00130                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00131             } else if (IS_SUB_4X8(sub_mb_type)) {
00132                 mc_part(h, n, 0, 8, 4 * h->mb_linesize,
00133                         dest_y, dest_cb, dest_cr, x_offset, y_offset,
00134                         qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
00135                         &weight_op[2], &weight_avg[2],
00136                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00137                 mc_part(h, n + 1, 0, 8, 4 * h->mb_linesize,
00138                         dest_y, dest_cb, dest_cr, x_offset + 2, y_offset,
00139                         qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
00140                         &weight_op[2], &weight_avg[2],
00141                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00142             } else {
00143                 int j;
00144                 av_assert2(IS_SUB_4X4(sub_mb_type));
00145                 for (j = 0; j < 4; j++) {
00146                     int sub_x_offset = x_offset + 2 * (j & 1);
00147                     int sub_y_offset = y_offset + (j & 2);
00148                     mc_part(h, n + j, 1, 4, 0,
00149                             dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
00150                             qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
00151                             &weight_op[2], &weight_avg[2],
00152                             IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
00153                 }
00154             }
00155         }
00156     }
00157 
00158     prefetch_motion(h, 1, PIXEL_SHIFT, CHROMA_IDC);
00159 }
00160