FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/mpeg_er.c
Date: 2024-07-26 21:54:09
Exec Total Coverage
Lines: 68 74 91.9%
Functions: 4 4 100.0%
Branches: 11 14 78.6%
Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavutil/avassert.h"
20 #include "libavutil/mem.h"
21 #include "error_resilience.h"
22 #include "mpegvideo.h"
23 #include "mpegvideodec.h"
24 #include "mpeg_er.h"
25
26 33690 static void set_erpic(ERPicture *dst, const MPVPicture *src)
27 {
28 int i;
29
30 33690 memset(dst, 0, sizeof(*dst));
31
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 33690 if (!src) {
32 314 dst->f = NULL;
33 314 dst->tf = NULL;
34 314 return;
35 }
36
37 33376 dst->f = src->f;
38 33376 dst->progress = &src->progress;
39
40
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 100128 for (i = 0; i < 2; i++) {
41 66752 dst->motion_val[i] = src->motion_val[i];
42 66752 dst->ref_index[i] = src->ref_index[i];
43 }
44
45 33376 dst->mb_type = src->mb_type;
46 33376 dst->field_picture = src->field_picture;
47 }
48
49 11230 void ff_mpeg_er_frame_start(MpegEncContext *s)
50 {
51 11230 ERContext *er = &s->er;
52
53 11230 set_erpic(&er->cur_pic, s->cur_pic.ptr);
54 11230 set_erpic(&er->next_pic, s->next_pic.ptr);
55 11230 set_erpic(&er->last_pic, s->last_pic.ptr);
56
57 11230 er->pp_time = s->pp_time;
58 11230 er->pb_time = s->pb_time;
59 11230 er->quarter_sample = s->quarter_sample;
60 11230 er->partitioned_frame = s->partitioned_frame;
61
62 11230 ff_er_frame_start(er);
63 11230 }
64
65 59282 static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
66 int (*mv)[2][4][2], int mb_x, int mb_y,
67 int mb_intra, int mb_skipped)
68 {
69 59282 MpegEncContext *s = opaque;
70
71 av_assert1(!mb_intra);
72
73 59282 s->mv_dir = mv_dir;
74 59282 s->mv_type = mv_type;
75 59282 s->mb_intra = mb_intra;
76 59282 s->mb_skipped = mb_skipped;
77 59282 s->mb_x = mb_x;
78 59282 s->mb_y = mb_y;
79 59282 s->mcsel = 0;
80 59282 memcpy(s->mv, mv, sizeof(*mv));
81
82 // The following disables the IDCT.
83
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 770666 for (size_t i = 0; i < FF_ARRAY_ELEMS(s->block_last_index); i++)
84 711384 s->block_last_index[i] = -1;
85
86 59282 s->dest[0] = s->cur_pic.data[0] +
87 59282 s->mb_y * 16 * s->linesize +
88 59282 s->mb_x * 16;
89 59282 s->dest[1] = s->cur_pic.data[1] +
90 59282 s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
91 59282 s->mb_x * (16 >> s->chroma_x_shift);
92 59282 s->dest[2] = s->cur_pic.data[2] +
93 59282 s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize +
94 59282 s->mb_x * (16 >> s->chroma_x_shift);
95
96
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 59282 if (ref)
97 ✗ av_log(s->avctx, AV_LOG_DEBUG,
98 "Interlaced error concealment is not fully implemented\n");
99 59282 ff_mpv_reconstruct_mb(s, s->block);
100 59282 }
101
102 643 int ff_mpeg_er_init(MpegEncContext *s)
103 {
104 643 ERContext *er = &s->er;
105 643 int mb_array_size = s->mb_height * s->mb_stride;
106 int i;
107
108 643 er->avctx = s->avctx;
109
110 643 er->mb_index2xy = s->mb_index2xy;
111 643 er->mb_num = s->mb_num;
112 643 er->mb_width = s->mb_width;
113 643 er->mb_height = s->mb_height;
114 643 er->mb_stride = s->mb_stride;
115 643 er->b8_stride = s->b8_stride;
116
117 643 er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride * (4*sizeof(int) + 1));
118 643 er->error_status_table = av_mallocz(mb_array_size);
119
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 643 if (!er->er_temp_buffer || !er->error_status_table)
120 ✗ goto fail;
121
122 643 er->mbskip_table = s->mbskip_table;
123 643 er->mbintra_table = s->mbintra_table;
124
125
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 2572 for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
126 1929 er->dc_val[i] = s->dc_val[i];
127
128 643 er->decode_mb = mpeg_er_decode_mb;
129 643 er->opaque = s;
130
131 643 return 0;
132 ✗ fail:
133 ✗ av_freep(&er->er_temp_buffer);
134 ✗ av_freep(&er->error_status_table);
135 ✗ return AVERROR(ENOMEM);
136 }
137