FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/cbs_jpeg_syntax_template.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 0 89 0.0%
Branches: 0 96 0.0%

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 static int FUNC(frame_header)(CodedBitstreamContext *ctx, RWContext *rw,
20 JPEGRawFrameHeader *current)
21 {
22 int err, i;
23
24 HEADER("Frame Header");
25
26 u(16, Lf, 8, 8 + 3 * JPEG_MAX_COMPONENTS);
27
28 u(8, P, 2, 16);
29 u(16, Y, 0, JPEG_MAX_HEIGHT);
30 u(16, X, 1, JPEG_MAX_WIDTH);
31 u(8, Nf, 1, JPEG_MAX_COMPONENTS);
32
33 for (i = 0; i < current->Nf; i++) {
34 us(8, C[i], i, 0, JPEG_MAX_COMPONENTS);
35 us(4, H[i], i, 1, 4);
36 us(4, V[i], i, 1, 4);
37 us(8, Tq[i], i, 0, 3);
38 }
39
40 return 0;
41 }
42
43 static int FUNC(quantisation_table)(CodedBitstreamContext *ctx, RWContext *rw,
44 JPEGRawQuantisationTable *current)
45 {
46 int err, i;
47
48 u(4, Pq, 0, 1);
49 u(4, Tq, 0, 3);
50
51 if (current->Pq) {
52 for (i = 0; i < 64; i++)
53 us(16, Q[i], i, 1, 255);
54 } else {
55 for (i = 0; i < 64; i++)
56 us(8, Q[i], i, 1, 255);
57 }
58
59 return 0;
60 }
61
62 static int FUNC(dqt)(CodedBitstreamContext *ctx, RWContext *rw,
63 JPEGRawQuantisationTableSpecification *current)
64 {
65 int err, i, n;
66
67 HEADER("Quantisation Tables");
68
69 u(16, Lq, 2, 2 + 4 * 65);
70 n = current->Lq / 65;
71
72 for (i = 0; i < n; i++)
73 CHECK(FUNC(quantisation_table)(ctx, rw, &current->table[i]));
74
75 return 0;
76 }
77
78 static int FUNC(huffman_table)(CodedBitstreamContext *ctx, RWContext *rw,
79 JPEGRawHuffmanTable *current)
80 {
81 int err, i, j, ij;
82
83 u(4, Tc, 0, 1);
84 u(4, Th, 0, 3);
85
86 for (i = 0; i < 16; i++)
87 us(8, L[i], i, 0, 224);
88
89 ij = 0;
90 for (i = 0; i < 16; i++) {
91 for (j = 0; j < current->L[i]; j++) {
92 if (ij >= 224)
93 return AVERROR_INVALIDDATA;
94 us(8, V[ij], ij, 0, 255);
95 ++ij;
96 }
97 }
98
99 return 0;
100 }
101
102 static int FUNC(dht)(CodedBitstreamContext *ctx, RWContext *rw,
103 JPEGRawHuffmanTableSpecification *current)
104 {
105 int err, i, j, n;
106
107 HEADER("Huffman Tables");
108
109 u(16, Lh, 2, 2 + 8 * (1 + 16 + 256));
110
111 n = 2;
112 for (i = 0; n < current->Lh; i++) {
113 if (i >= 8)
114 return AVERROR_INVALIDDATA;
115
116 CHECK(FUNC(huffman_table)(ctx, rw, &current->table[i]));
117
118 ++n;
119 for (j = 0; j < 16; j++)
120 n += 1 + current->table[i].L[j];
121 }
122
123 return 0;
124 }
125
126 static int FUNC(scan_header)(CodedBitstreamContext *ctx, RWContext *rw,
127 JPEGRawScanHeader *current)
128 {
129 int err, j;
130
131 HEADER("Scan");
132
133 u(16, Ls, 6, 6 + 2 * JPEG_MAX_COMPONENTS);
134
135 u(8, Ns, 1, 4);
136 for (j = 0; j < current->Ns; j++) {
137 us(8, Cs[j], j, 0, JPEG_MAX_COMPONENTS);
138 us(4, Td[j], j, 0, 3);
139 us(4, Ta[j], j, 0, 3);
140 }
141
142 u(8, Ss, 0, 63);
143 u(8, Se, 0, 63);
144 u(4, Ah, 0, 13);
145 u(4, Al, 0, 15);
146
147 return 0;
148 }
149
150 static int FUNC(application_data)(CodedBitstreamContext *ctx, RWContext *rw,
151 JPEGRawApplicationData *current)
152 {
153 int err, i;
154
155 HEADER("Application Data");
156
157 u(16, Lp, 2, 65535);
158
159 if (current->Lp > 2) {
160 #ifdef READ
161 current->Ap_ref = av_buffer_alloc(current->Lp - 2);
162 if (!current->Ap_ref)
163 return AVERROR(ENOMEM);
164 current->Ap = current->Ap_ref->data;
165 #endif
166
167 for (i = 0; i < current->Lp - 2; i++)
168 us(8, Ap[i], i, 0, 255);
169 }
170
171 return 0;
172 }
173
174 static int FUNC(comment)(CodedBitstreamContext *ctx, RWContext *rw,
175 JPEGRawComment *current)
176 {
177 int err, i;
178
179 HEADER("Comment");
180
181 u(16, Lc, 2, 65535);
182
183 if (current->Lc > 2) {
184 #ifdef READ
185 current->Cm_ref = av_buffer_alloc(current->Lc - 2);
186 if (!current->Cm_ref)
187 return AVERROR(ENOMEM);
188 current->Cm = current->Cm_ref->data;
189 #endif
190
191 for (i = 0; i < current->Lc - 2; i++)
192 us(8, Cm[i], i, 0, 255);
193 }
194
195 return 0;
196 }
197