FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/h263enc.h
Date: 2024-10-04 17:46:48
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 void ff_h263_encode_init(MpegEncContext *s);
28 void ff_h263_encode_picture_header(MpegEncContext *s);
29 void ff_h263_encode_gob_header(MpegEncContext * s, int mb_line);
30 void ff_h263_encode_mb(MpegEncContext *s,
31 int16_t block[6][64],
32 int motion_x, int motion_y);
33 void ff_h263_encode_mba(MpegEncContext *s);
34
35 void ff_clean_h263_qscales(MpegEncContext *s);
36
37 void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code);
38 void ff_h263_update_mb(MpegEncContext *s);
39
40 2654061 static inline void ff_h263_encode_motion_vector(MpegEncContext * s,
41 int x, int y, int f_code)
42 {
43 2654061 ff_h263_encode_motion(&s->pb, x, f_code);
44 2654061 ff_h263_encode_motion(&s->pb, y, f_code);
45 2654061 }
46
47 1211284 static inline int get_p_cbp(MpegEncContext * s,
48 int16_t block[6][64],
49 int motion_x, int motion_y){
50 int cbp;
51
52
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1211284 if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
53 int best_cbpy_score = INT_MAX;
54 int best_cbpc_score = INT_MAX;
55 int cbpc = (-1), cbpy = (-1);
56 const int offset = (s->mv_type == MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0);
57 const int lambda = s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
58
59 for (int i = 0; i < 4; i++) {
60 int score = ff_h263_inter_MCBPC_bits[i + offset] * lambda;
61 if (i & 1) score += s->coded_score[5];
62 if (i & 2) score += s->coded_score[4];
63
64 if (score < best_cbpc_score) {
65 best_cbpc_score = score;
66 cbpc = i;
67 }
68 }
69
70 for (int i = 0; i < 16; i++) {
71 int score= ff_h263_cbpy_tab[i ^ 0xF][1] * lambda;
72 if (i & 1) score += s->coded_score[3];
73 if (i & 2) score += s->coded_score[2];
74 if (i & 4) score += s->coded_score[1];
75 if (i & 8) score += s->coded_score[0];
76
77 if (score < best_cbpy_score) {
78 best_cbpy_score = score;
79 cbpy = i;
80 }
81 }
82 cbp = cbpc + 4 * cbpy;
83 if (!(motion_x | motion_y | s->dquant) && s->mv_type == MV_TYPE_16X16) {
84 if (best_cbpy_score + best_cbpc_score + 2 * lambda >= 0)
85 cbp= 0;
86 }
87
88 for (int i = 0; i < 6; i++) {
89 if (s->block_last_index[i] >= 0 && !((cbp >> (5 - i)) & 1)) {
90 s->block_last_index[i] = -1;
91 s->bdsp.clear_block(s->block[i]);
92 }
93 }
94 } else {
95 1211284 cbp = 0;
96
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8478988 for (int i = 0; i < 6; i++) {
97
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7267704 if (s->block_last_index[i] >= 0)
98 3269352 cbp |= 1 << (5 - i);
99 }
100 }
101 1211284 return cbp;
102 }
103
104 #endif
105