166 lines
7.5 KiB
C
Executable File
166 lines
7.5 KiB
C
Executable File
/*
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* H.26L/H.264/AVC/JVT/14496-10/... decoder
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "h264dec.h"
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#undef MCFUNC
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#if CHROMA_IDC == 1
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# define MCFUNC(n) FUNC(n ## _420)
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#elif CHROMA_IDC == 2
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# define MCFUNC(n) FUNC(n ## _422)
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#elif CHROMA_IDC == 3
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# define MCFUNC(n) FUNC(n ## _444)
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#endif
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#undef mc_part
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#define mc_part MCFUNC(mc_part)
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static void mc_part(const H264Context *h, H264SliceContext *sl,
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int n, int square,
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int height, int delta,
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uint8_t *dest_y, uint8_t *dest_cb,
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uint8_t *dest_cr,
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int x_offset, int y_offset,
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const qpel_mc_func *qpix_put,
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h264_chroma_mc_func chroma_put,
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const qpel_mc_func *qpix_avg,
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h264_chroma_mc_func chroma_avg,
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const h264_weight_func *weight_op,
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const h264_biweight_func *weight_avg,
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int list0, int list1)
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{
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if ((sl->pwt.use_weight == 2 && list0 && list1 &&
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(sl->pwt.implicit_weight[sl->ref_cache[0][scan8[n]]][sl->ref_cache[1][scan8[n]]][sl->mb_y & 1] != 32)) ||
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sl->pwt.use_weight == 1)
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mc_part_weighted(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr,
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x_offset, y_offset, qpix_put, chroma_put,
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weight_op[0], weight_op[1], weight_avg[0],
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weight_avg[1], list0, list1, PIXEL_SHIFT, CHROMA_IDC);
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else
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mc_part_std(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr,
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x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
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chroma_avg, list0, list1, PIXEL_SHIFT, CHROMA_IDC);
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}
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static void MCFUNC(hl_motion)(const H264Context *h, H264SliceContext *sl,
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uint8_t *dest_y,
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uint8_t *dest_cb, uint8_t *dest_cr,
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const qpel_mc_func(*qpix_put)[16],
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const h264_chroma_mc_func(*chroma_put),
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const qpel_mc_func(*qpix_avg)[16],
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const h264_chroma_mc_func(*chroma_avg),
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const h264_weight_func *weight_op,
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const h264_biweight_func *weight_avg)
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{
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const int mb_xy = sl->mb_xy;
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const int mb_type = h->cur_pic.mb_type[mb_xy];
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av_assert2(IS_INTER(mb_type));
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if (HAVE_THREADS && (h->avctx->active_thread_type & FF_THREAD_FRAME))
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await_references(h, sl);
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if (USES_LIST(mb_type, 0))
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prefetch_motion(h, sl, 0, PIXEL_SHIFT, CHROMA_IDC);
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if (IS_16X16(mb_type)) {
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mc_part(h, sl, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0,
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qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
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weight_op, weight_avg,
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IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
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} else if (IS_16X8(mb_type)) {
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mc_part(h, sl, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0,
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qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
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weight_op, weight_avg,
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IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
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mc_part(h, sl, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4,
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qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
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weight_op, weight_avg,
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IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
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} else if (IS_8X16(mb_type)) {
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mc_part(h, sl, 0, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
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qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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&weight_op[1], &weight_avg[1],
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IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
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mc_part(h, sl, 4, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
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qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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&weight_op[1], &weight_avg[1],
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IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
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} else {
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int i;
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av_assert2(IS_8X8(mb_type));
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for (i = 0; i < 4; i++) {
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const int sub_mb_type = sl->sub_mb_type[i];
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const int n = 4 * i;
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int x_offset = (i & 1) << 2;
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int y_offset = (i & 2) << 1;
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if (IS_SUB_8X8(sub_mb_type)) {
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mc_part(h, sl, n, 1, 8, 0, dest_y, dest_cb, dest_cr,
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x_offset, y_offset,
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qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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&weight_op[1], &weight_avg[1],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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} else if (IS_SUB_8X4(sub_mb_type)) {
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mc_part(h, sl, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr,
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x_offset, y_offset,
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qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
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&weight_op[1], &weight_avg[1],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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mc_part(h, sl, n + 2, 0, 4, 4 << PIXEL_SHIFT,
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dest_y, dest_cb, dest_cr, x_offset, y_offset + 2,
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qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
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&weight_op[1], &weight_avg[1],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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} else if (IS_SUB_4X8(sub_mb_type)) {
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mc_part(h, sl, n, 0, 8, 4 * sl->mb_linesize,
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dest_y, dest_cb, dest_cr, x_offset, y_offset,
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qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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&weight_op[2], &weight_avg[2],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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mc_part(h, sl, n + 1, 0, 8, 4 * sl->mb_linesize,
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dest_y, dest_cb, dest_cr, x_offset + 2, y_offset,
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qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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&weight_op[2], &weight_avg[2],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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} else {
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int j;
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av_assert2(IS_SUB_4X4(sub_mb_type));
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for (j = 0; j < 4; j++) {
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int sub_x_offset = x_offset + 2 * (j & 1);
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int sub_y_offset = y_offset + (j & 2);
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mc_part(h, sl, n + j, 1, 4, 0,
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dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
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qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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&weight_op[2], &weight_avg[2],
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IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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}
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}
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}
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}
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if (USES_LIST(mb_type, 1))
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prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC);
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}
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