FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/wmv2.c
Date: 2022-01-22 23:30:28
Exec Total Coverage
Lines: 71 73 97.3%
Branches: 26 30 86.7%

Line Branch Exec Source
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 "mpegutils.h"
24 #include "mpegvideo.h"
25 #include "msmpeg4data.h"
26 #include "wmv2.h"
27 #include "wmv2data.h"
28
29
30 16 av_cold void ff_wmv2_common_init(Wmv2Context *w)
31 {
32 16 MpegEncContext *const s = &w->s;
33
34 16 ff_blockdsp_init(&s->bdsp, s->avctx);
35 16 ff_wmv2dsp_init(&w->wdsp);
36 16 s->idsp.perm_type = w->wdsp.idct_perm;
37 16 ff_init_scantable_permutation(s->idsp.idct_permutation,
38 16 w->wdsp.idct_perm);
39 16 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
40 ff_wmv2_scantableA);
41 16 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
42 ff_wmv2_scantableB);
43 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
44 ff_wmv1_scantable[1]);
45 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
46 ff_wmv1_scantable[2]);
47 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
48 ff_wmv1_scantable[3]);
49 16 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
50 ff_wmv1_scantable[0]);
51 16 s->idsp.idct_put = w->wdsp.idct_put;
52 16 s->idsp.idct_add = w->wdsp.idct_add;
53 16 s->idsp.idct = NULL;
54 16 }
55
56 80493 void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
57 uint8_t *dest_cb, uint8_t *dest_cr,
58 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
59 int motion_x, int motion_y, int h)
60 {
61 80493 Wmv2Context *const w = (Wmv2Context *) s;
62 uint8_t *ptr;
63 int dxy, mx, my, src_x, src_y, v_edge_pos;
64 ptrdiff_t offset, linesize, uvlinesize;
65 80493 int emu = 0;
66
67 80493 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
68 80493 dxy = 2 * dxy + w->hshift;
69 80493 src_x = s->mb_x * 16 + (motion_x >> 1);
70 80493 src_y = s->mb_y * 16 + (motion_y >> 1);
71
72 /* WARNING: do no forget half pels */
73 80493 v_edge_pos = s->v_edge_pos;
74 80493 src_x = av_clip(src_x, -16, s->width);
75 80493 src_y = av_clip(src_y, -16, s->height);
76
77
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80493 if (src_x <= -16 || src_x >= s->width)
78 1 dxy &= ~3;
79
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80493 if (src_y <= -16 || src_y >= s->height)
80 1 dxy &= ~4;
81
82 80493 linesize = s->linesize;
83 80493 uvlinesize = s->uvlinesize;
84 80493 ptr = ref_picture[0] + (src_y * linesize) + src_x;
85
86
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80493 if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
87
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67720 src_y + h + 1 >= v_edge_pos) {
88 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
89 s->linesize, s->linesize, 19, 19,
90 src_x - 1, src_y - 1,
91 s->h_edge_pos, s->v_edge_pos);
92 17610 ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
93 17610 emu = 1;
94 }
95
96 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
97 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
98 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
99 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
100
101
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80493 if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
102 return;
103
104 80493 dxy = 0;
105
2/2
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80493 if ((motion_x & 3) != 0)
106 22071 dxy |= 1;
107
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80493 if ((motion_y & 3) != 0)
108 11804 dxy |= 2;
109 80493 mx = motion_x >> 2;
110 80493 my = motion_y >> 2;
111
112 80493 src_x = s->mb_x * 8 + mx;
113 80493 src_y = s->mb_y * 8 + my;
114 80493 src_x = av_clip(src_x, -8, s->width >> 1);
115
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80493 if (src_x == (s->width >> 1))
116 dxy &= ~1;
117 80493 src_y = av_clip(src_y, -8, s->height >> 1);
118
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80493 if (src_y == (s->height >> 1))
119 1 dxy &= ~2;
120 80493 offset = (src_y * uvlinesize) + src_x;
121 80493 ptr = ref_picture[1] + offset;
122
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80493 if (emu) {
123 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
124 s->uvlinesize, s->uvlinesize,
125 9, 9,
126 src_x, src_y,
127 17610 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
128 17610 ptr = s->sc.edge_emu_buffer;
129 }
130 80493 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
131
132 80493 ptr = ref_picture[2] + offset;
133
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80493 if (emu) {
134 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
135 s->uvlinesize, s->uvlinesize,
136 9, 9,
137 src_x, src_y,
138 17610 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
139 17610 ptr = s->sc.edge_emu_buffer;
140 }
141 80493 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
142 }
143