FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/mpeg_er.c
Date: 2024-02-16 17:37:06
Exec Total Coverage
Lines: 71 78 91.0%
Functions: 4 4 100.0%
Branches: 10 14 71.4%

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 "error_resilience.h"
20 #include "mpegvideo.h"
21 #include "mpegvideodec.h"
22 #include "mpeg_er.h"
23
24 33534 static void set_erpic(ERPicture *dst, Picture *src)
25 {
26 int i;
27
28 33534 memset(dst, 0, sizeof(*dst));
29
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33534 if (!src) {
30 312 dst->f = NULL;
31 312 dst->tf = NULL;
32 312 return;
33 }
34
35 33222 dst->f = src->f;
36 33222 dst->tf = &src->tf;
37
38
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99666 for (i = 0; i < 2; i++) {
39 66444 dst->motion_val[i] = src->motion_val[i];
40 66444 dst->ref_index[i] = src->ref_index[i];
41 }
42
43 33222 dst->mb_type = src->mb_type;
44 33222 dst->field_picture = src->field_picture;
45 }
46
47 11178 void ff_mpeg_er_frame_start(MpegEncContext *s)
48 {
49 11178 ERContext *er = &s->er;
50
51 11178 set_erpic(&er->cur_pic, s->current_picture_ptr);
52 11178 set_erpic(&er->next_pic, s->next_picture_ptr);
53 11178 set_erpic(&er->last_pic, s->last_picture_ptr);
54
55 11178 er->pp_time = s->pp_time;
56 11178 er->pb_time = s->pb_time;
57 11178 er->quarter_sample = s->quarter_sample;
58 11178 er->partitioned_frame = s->partitioned_frame;
59
60 11178 ff_er_frame_start(er);
61 11178 }
62
63 59282 static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
64 int (*mv)[2][4][2], int mb_x, int mb_y,
65 int mb_intra, int mb_skipped)
66 {
67 59282 MpegEncContext *s = opaque;
68
69 59282 s->mv_dir = mv_dir;
70 59282 s->mv_type = mv_type;
71 59282 s->mb_intra = mb_intra;
72 59282 s->mb_skipped = mb_skipped;
73 59282 s->mb_x = mb_x;
74 59282 s->mb_y = mb_y;
75 59282 s->mcsel = 0;
76 59282 memcpy(s->mv, mv, sizeof(*mv));
77
78 59282 ff_init_block_index(s);
79 59282 ff_update_block_index(s, s->avctx->bits_per_raw_sample,
80 59282 s->avctx->lowres, s->chroma_x_shift);
81
82 59282 s->bdsp.clear_blocks(s->block[0]);
83
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59282 if (!s->chroma_y_shift)
84 s->bdsp.clear_blocks(s->block[6]);
85
86 59282 s->dest[0] = s->current_picture.f->data[0] +
87 59282 s->mb_y * 16 * s->linesize +
88 59282 s->mb_x * 16;
89 59282 s->dest[1] = s->current_picture.f->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->current_picture.f->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
102 639 int ff_mpeg_er_init(MpegEncContext *s)
103 {
104 639 ERContext *er = &s->er;
105 639 int mb_array_size = s->mb_height * s->mb_stride;
106 int i;
107
108 639 er->avctx = s->avctx;
109
110 639 er->mb_index2xy = s->mb_index2xy;
111 639 er->mb_num = s->mb_num;
112 639 er->mb_width = s->mb_width;
113 639 er->mb_height = s->mb_height;
114 639 er->mb_stride = s->mb_stride;
115 639 er->b8_stride = s->b8_stride;
116
117 639 er->er_temp_buffer = av_malloc(s->mb_height * s->mb_stride * (4*sizeof(int) + 1));
118 639 er->error_status_table = av_mallocz(mb_array_size);
119
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639 if (!er->er_temp_buffer || !er->error_status_table)
120 goto fail;
121
122 639 er->mbskip_table = s->mbskip_table;
123 639 er->mbintra_table = s->mbintra_table;
124
125
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2556 for (i = 0; i < FF_ARRAY_ELEMS(s->dc_val); i++)
126 1917 er->dc_val[i] = s->dc_val[i];
127
128 639 er->decode_mb = mpeg_er_decode_mb;
129 639 er->opaque = s;
130
131 639 return 0;
132 fail:
133 av_freep(&er->er_temp_buffer);
134 av_freep(&er->error_status_table);
135 return AVERROR(ENOMEM);
136 }
137