FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dynamic_hdr_vivid.c
Date: 2022-10-02 18:56:10
Exec Total Coverage
Lines: 62 77 80.5%
Branches: 30 52 57.7%

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 "dynamic_hdr_vivid.h"
20 #include "get_bits.h"
21
22 static const int32_t maxrgb_den = 4095;
23 static const int32_t color_saturation_gain_den = 128;
24 static const int32_t maximum_luminance_den = 4095;
25 static const int32_t base_param_m_p_den = 16383;
26 static const int32_t base_param_m_m_den = 10;
27 static const int32_t base_param_m_a_den = 1023;
28 static const int32_t base_param_m_b_den = 1023;
29 static const int32_t base_param_m_n_den = 10;
30 static const int32_t base_param_Delta_den = 127;
31
32 3 int ff_parse_itu_t_t35_to_dynamic_hdr_vivid(AVDynamicHDRVivid *s, const uint8_t *data,
33 int size)
34 {
35 3 GetBitContext gbc, *gb = &gbc;
36 int ret;
37
38
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3 if (!s)
39 return AVERROR(ENOMEM);
40
41 3 ret = init_get_bits8(gb, data, size);
42
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3 if (ret < 0)
43 return ret;
44
45
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3 if (get_bits_left(gb) < 8)
46 return AVERROR_INVALIDDATA;
47
48 3 s->system_start_code = get_bits(gb, 8);
49
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3 if (s->system_start_code == 0x01) {
50 3 s->num_windows = 1;
51
52
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3 if (get_bits_left(gb) < 12 * 4 * s->num_windows)
53 return AVERROR_INVALIDDATA;
54
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6 for (int w = 0; w < s->num_windows; w++) {
55 3 AVHDRVividColorTransformParams *params = &s->params[w];
56
57 3 params->minimum_maxrgb = (AVRational){get_bits(gb, 12), maxrgb_den};
58 3 params->average_maxrgb = (AVRational){get_bits(gb, 12), maxrgb_den};
59 3 params->variance_maxrgb = (AVRational){get_bits(gb, 12), maxrgb_den};
60 3 params->maximum_maxrgb = (AVRational){get_bits(gb, 12), maxrgb_den};
61 }
62
63
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3 if (get_bits_left(gb) < 2 * s->num_windows)
64 return AVERROR_INVALIDDATA;
65
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6 for (int w = 0; w < s->num_windows; w++) {
66 3 AVHDRVividColorTransformParams *params = &s->params[w];
67
68 3 params->tone_mapping_mode_flag = get_bits(gb, 1);
69
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3 if (params->tone_mapping_mode_flag) {
70
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3 if (get_bits_left(gb) < 1 )
71 return AVERROR_INVALIDDATA;
72 3 params->tone_mapping_param_num = get_bits(gb, 1) + 1;
73
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9 for (int i = 0; i < params->tone_mapping_param_num; i++) {
74 6 AVHDRVividColorToneMappingParams *tm_params = &params->tm_params[i];
75
76
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6 if (get_bits_left(gb) < 13)
77 return AVERROR_INVALIDDATA;
78 6 tm_params->targeted_system_display_maximum_luminance = (AVRational){get_bits(gb, 12), maximum_luminance_den};
79 6 tm_params->base_enable_flag = get_bits(gb, 1);
80
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6 if (tm_params->base_enable_flag) {
81
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6 if (get_bits_left(gb) < (14 + 6 + 10 + 10 + 6 + 8 + 10))
82 return AVERROR_INVALIDDATA;
83 6 tm_params->base_param_m_p = (AVRational){get_bits(gb, 14), base_param_m_p_den};
84 6 tm_params->base_param_m_m = (AVRational){get_bits(gb, 6), base_param_m_m_den};
85 6 tm_params->base_param_m_a = (AVRational){get_bits(gb, 10), base_param_m_a_den};
86 6 tm_params->base_param_m_b = (AVRational){get_bits(gb, 10), base_param_m_b_den};
87 6 tm_params->base_param_m_n = (AVRational){get_bits(gb, 6), base_param_m_n_den};
88 6 tm_params->base_param_k1 = get_bits(gb, 2);
89 6 tm_params->base_param_k2 = get_bits(gb, 2);
90 6 tm_params->base_param_k3 = get_bits(gb, 4);
91 6 tm_params->base_param_Delta_enable_mode = get_bits(gb, 3);
92
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6 if (tm_params->base_param_Delta_enable_mode == 2 || tm_params->base_param_Delta_enable_mode == 6)
93 tm_params->base_param_Delta = (AVRational){get_bits(gb, 7) * -1, base_param_Delta_den};
94 else
95 6 tm_params->base_param_Delta = (AVRational){get_bits(gb, 7), base_param_Delta_den};
96
97
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6 if (get_bits_left(gb) < 1)
98 return AVERROR_INVALIDDATA;
99 6 tm_params->three_Spline_enable_flag = get_bits(gb, 1);
100
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6 if (tm_params->three_Spline_enable_flag) {
101
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6 if (get_bits_left(gb) < 1 + tm_params->three_Spline_num * (2 + 12 + 28 + 1))
102 return AVERROR_INVALIDDATA;
103 6 tm_params->three_Spline_num = get_bits(gb, 1) + 1;
104
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12 for (int j = 0; j < tm_params->three_Spline_num; j++) {
105 6 tm_params->three_Spline_TH_mode = get_bits(gb, 2);
106
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6 if (tm_params->three_Spline_TH_mode == 0 || tm_params->three_Spline_TH_mode == 2) {
107
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6 if (get_bits_left(gb) < 8)
108 return AVERROR_INVALIDDATA;
109 6 tm_params->three_Spline_TH_enable_MB = (AVRational){get_bits(gb, 8), 255};
110 }
111 6 tm_params->three_Spline_TH_enable = (AVRational){get_bits(gb, 12), 4095};
112 6 tm_params->three_Spline_TH_Delta1 = (AVRational){get_bits(gb, 10), 1023};
113 6 tm_params->three_Spline_TH_Delta2 = (AVRational){get_bits(gb, 10), 1023};
114 6 tm_params->three_Spline_enable_Strength = (AVRational){get_bits(gb, 8), 255};
115 }
116 } else {
117 tm_params->three_Spline_num = 1;
118 tm_params->three_Spline_TH_mode = 0;
119 }
120
121 }
122 }
123 }
124
125 3 params->color_saturation_mapping_flag = get_bits(gb, 1);
126
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3 if (params->color_saturation_mapping_flag) {
127
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3 if (get_bits_left(gb) < 3 + params->color_saturation_num * 8)
128 return AVERROR_INVALIDDATA;
129
130 3 params->color_saturation_num = get_bits(gb, 3);
131
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9 for (int i = 0; i < params->color_saturation_num; i++) {
132 6 params->color_saturation_gain[i] = (AVRational){get_bits(gb, 8), color_saturation_gain_den};
133 }
134 }
135 }
136 }
137
138 3 return 0;
139 }
140