FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/wmv2.c
Date: 2022-08-10 20:23:34
Exec Total Coverage
Lines: 69 71 97.2%
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 "mpegvideo.h"
24 #include "msmpeg4data.h"
25 #include "wmv2.h"
26
27
28 16 av_cold void ff_wmv2_common_init(MpegEncContext *s)
29 {
30 16 WMV2Context *const w = s->private_ctx;
31
32 16 ff_blockdsp_init(&s->bdsp, s->avctx);
33 16 ff_wmv2dsp_init(&w->wdsp);
34 16 s->idsp.perm_type = w->wdsp.idct_perm;
35 16 ff_init_scantable_permutation(s->idsp.idct_permutation,
36 16 w->wdsp.idct_perm);
37 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
38 ff_wmv1_scantable[1]);
39 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
40 ff_wmv1_scantable[2]);
41 16 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
42 ff_wmv1_scantable[3]);
43 16 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
44 ff_wmv1_scantable[0]);
45 16 s->idsp.idct_put = w->wdsp.idct_put;
46 16 s->idsp.idct_add = w->wdsp.idct_add;
47 16 s->idsp.idct = NULL;
48 16 }
49
50 80493 void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
51 uint8_t *dest_cb, uint8_t *dest_cr,
52 uint8_t *const *ref_picture, op_pixels_func (*pix_op)[4],
53 int motion_x, int motion_y, int h)
54 {
55 80493 WMV2Context *const w = s->private_ctx;
56 const uint8_t *ptr;
57 int dxy, mx, my, src_x, src_y, v_edge_pos;
58 ptrdiff_t offset, linesize, uvlinesize;
59 80493 int emu = 0;
60
61 80493 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
62 80493 dxy = 2 * dxy + w->hshift;
63 80493 src_x = s->mb_x * 16 + (motion_x >> 1);
64 80493 src_y = s->mb_y * 16 + (motion_y >> 1);
65
66 /* WARNING: do no forget half pels */
67 80493 v_edge_pos = s->v_edge_pos;
68 80493 src_x = av_clip(src_x, -16, s->width);
69 80493 src_y = av_clip(src_y, -16, s->height);
70
71
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80493 if (src_x <= -16 || src_x >= s->width)
72 1 dxy &= ~3;
73
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80493 if (src_y <= -16 || src_y >= s->height)
74 1 dxy &= ~4;
75
76 80493 linesize = s->linesize;
77 80493 uvlinesize = s->uvlinesize;
78 80493 ptr = ref_picture[0] + (src_y * linesize) + src_x;
79
80
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80493 if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
81
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67720 src_y + h + 1 >= v_edge_pos) {
82 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
83 s->linesize, s->linesize, 19, 19,
84 src_x - 1, src_y - 1,
85 s->h_edge_pos, s->v_edge_pos);
86 17610 ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
87 17610 emu = 1;
88 }
89
90 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
91 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
92 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
93 80493 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
94
95
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80493 if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
96 return;
97
98 80493 dxy = 0;
99
2/2
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80493 if ((motion_x & 3) != 0)
100 22071 dxy |= 1;
101
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80493 if ((motion_y & 3) != 0)
102 11804 dxy |= 2;
103 80493 mx = motion_x >> 2;
104 80493 my = motion_y >> 2;
105
106 80493 src_x = s->mb_x * 8 + mx;
107 80493 src_y = s->mb_y * 8 + my;
108 80493 src_x = av_clip(src_x, -8, s->width >> 1);
109
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80493 if (src_x == (s->width >> 1))
110 dxy &= ~1;
111 80493 src_y = av_clip(src_y, -8, s->height >> 1);
112
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80493 if (src_y == (s->height >> 1))
113 1 dxy &= ~2;
114 80493 offset = (src_y * uvlinesize) + src_x;
115 80493 ptr = ref_picture[1] + offset;
116
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80493 if (emu) {
117 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
118 s->uvlinesize, s->uvlinesize,
119 9, 9,
120 src_x, src_y,
121 17610 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
122 17610 ptr = s->sc.edge_emu_buffer;
123 }
124 80493 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
125
126 80493 ptr = ref_picture[2] + offset;
127
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80493 if (emu) {
128 17610 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
129 s->uvlinesize, s->uvlinesize,
130 9, 9,
131 src_x, src_y,
132 17610 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
133 17610 ptr = s->sc.edge_emu_buffer;
134 }
135 80493 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
136 }
137