FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/h263enc.h
Date: 2025-06-23 20:06:14
Exec Total Coverage
Lines: 11 40 27.5%
Functions: 2 2 100.0%
Branches: 5 42 11.9%

Line Branch Exec Source
1 /*
2 * H.263 encoder header
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 #ifndef AVCODEC_H263ENC_H
21 #define AVCODEC_H263ENC_H
22
23 #include <stdint.h>
24 #include "h263data.h"
25 #include "mpegvideoenc.h"
26
27 const uint8_t (*ff_h263_get_mv_penalty(void))[MAX_DMV*2+1];
28
29 void ff_h263_encode_init(MPVMainEncContext *m);
30 void ff_h263_mpeg4_reset_dc(MPVEncContext *s);
31 void ff_h263_encode_gob_header(MPVEncContext *s, int mb_line);
32 void ff_h263_encode_mba(MPVEncContext *s);
33
34 void ff_clean_h263_qscales(MPVEncContext *s);
35
36 void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code);
37 void ff_h263_update_mb(MPVEncContext *s);
38
39 2654460 static inline void ff_h263_encode_motion_vector(MPVEncContext *s,
40 int x, int y, int f_code)
41 {
42 2654460 ff_h263_encode_motion(&s->pb, x, f_code);
43 2654460 ff_h263_encode_motion(&s->pb, y, f_code);
44 2654460 }
45
46 1244677 static inline int get_p_cbp(MPVEncContext *const s,
47 int16_t block[6][64],
48 int motion_x, int motion_y){
49 int cbp;
50
51
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1244677 if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
52 int best_cbpy_score = INT_MAX;
53 int best_cbpc_score = INT_MAX;
54 int cbpc = (-1), cbpy = (-1);
55 const int offset = (s->c.mv_type == MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0);
56 const int lambda = s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
57
58 for (int i = 0; i < 4; i++) {
59 int score = ff_h263_inter_MCBPC_bits[i + offset] * lambda;
60 if (i & 1) score += s->coded_score[5];
61 if (i & 2) score += s->coded_score[4];
62
63 if (score < best_cbpc_score) {
64 best_cbpc_score = score;
65 cbpc = i;
66 }
67 }
68
69 for (int i = 0; i < 16; i++) {
70 int score= ff_h263_cbpy_tab[i ^ 0xF][1] * lambda;
71 if (i & 1) score += s->coded_score[3];
72 if (i & 2) score += s->coded_score[2];
73 if (i & 4) score += s->coded_score[1];
74 if (i & 8) score += s->coded_score[0];
75
76 if (score < best_cbpy_score) {
77 best_cbpy_score = score;
78 cbpy = i;
79 }
80 }
81 cbp = cbpc + 4 * cbpy;
82 if (!(motion_x | motion_y | s->dquant) && s->c.mv_type == MV_TYPE_16X16) {
83 if (best_cbpy_score + best_cbpc_score + 2 * lambda >= 0)
84 cbp= 0;
85 }
86
87 for (int i = 0; i < 6; i++) {
88 if (s->c.block_last_index[i] >= 0 && !((cbp >> (5 - i)) & 1)) {
89 s->c.block_last_index[i] = -1;
90 s->c.bdsp.clear_block(s->c.block[i]);
91 }
92 }
93 } else {
94 1244677 cbp = 0;
95
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8712739 for (int i = 0; i < 6; i++) {
96
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7468062 if (s->c.block_last_index[i] >= 0)
97 3357964 cbp |= 1 << (5 - i);
98 }
99 }
100 1244677 return cbp;
101 }
102
103 #endif
104