FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/cbs_sei_syntax_template.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 99 141 70.2%
Branches: 36 90 40.0%

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(filler_payload)
20 (CodedBitstreamContext *ctx, RWContext *rw,
21 SEIRawFillerPayload *current, SEIMessageState *state)
22 {
23 int err, i;
24
25 HEADER("Filler Payload");
26
27 #ifdef READ
28 current->payload_size = state->payload_size;
29 #endif
30
31 for (i = 0; i < current->payload_size; i++)
32 fixed(8, ff_byte, 0xff);
33
34 return 0;
35 }
36
37 150 static int FUNC(user_data_registered)
38 (CodedBitstreamContext *ctx, RWContext *rw,
39 SEIRawUserDataRegistered *current, SEIMessageState *state)
40 {
41 int err, i, j;
42
43 150 HEADER("User Data Registered ITU-T T.35");
44
45
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150 u(8, itu_t_t35_country_code, 0x00, 0xff);
46
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150 if (current->itu_t_t35_country_code != 0xff)
47 150 i = 1;
48 else {
49 u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
50 i = 2;
51 }
52
53 #ifdef READ
54
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50 if (state->payload_size < i) {
55 av_log(ctx->log_ctx, AV_LOG_ERROR,
56 "Invalid SEI user data registered payload.\n");
57 return AVERROR_INVALIDDATA;
58 }
59 50 current->data_length = state->payload_size - i;
60 #endif
61
62
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150 allocate(current->data, current->data_length);
63
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1608 for (j = 0; j < current->data_length; j++)
64
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1458 xu(8, itu_t_t35_payload_byte[], current->data[j], 0x00, 0xff, 1, i + j);
65
66 150 return 0;
67 }
68
69 static int FUNC(user_data_unregistered)
70 (CodedBitstreamContext *ctx, RWContext *rw,
71 SEIRawUserDataUnregistered *current, SEIMessageState *state)
72 {
73 int err, i;
74
75 HEADER("User Data Unregistered");
76
77 #ifdef READ
78 if (state->payload_size < 16) {
79 av_log(ctx->log_ctx, AV_LOG_ERROR,
80 "Invalid SEI user data unregistered payload.\n");
81 return AVERROR_INVALIDDATA;
82 }
83 current->data_length = state->payload_size - 16;
84 #endif
85
86 for (i = 0; i < 16; i++)
87 us(8, uuid_iso_iec_11578[i], 0x00, 0xff, 1, i);
88
89 allocate(current->data, current->data_length);
90
91 for (i = 0; i < current->data_length; i++)
92 xu(8, user_data_payload_byte[i], current->data[i], 0x00, 0xff, 1, i);
93
94 return 0;
95 }
96
97 6 static int FUNC(mastering_display_colour_volume)
98 (CodedBitstreamContext *ctx, RWContext *rw,
99 SEIRawMasteringDisplayColourVolume *current, SEIMessageState *state)
100 {
101 int err, c;
102
103 6 HEADER("Mastering Display Colour Volume");
104
105
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24 for (c = 0; c < 3; c++) {
106
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18 ubs(16, display_primaries_x[c], 1, c);
107
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18 ubs(16, display_primaries_y[c], 1, c);
108 }
109
110
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6 ub(16, white_point_x);
111
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6 ub(16, white_point_y);
112
113
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6 ub(32, max_display_mastering_luminance);
114
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6 ub(32, min_display_mastering_luminance);
115
116 6 return 0;
117 }
118
119 static int FUNC(content_light_level_info)
120 (CodedBitstreamContext *ctx, RWContext *rw,
121 SEIRawContentLightLevelInfo *current, SEIMessageState *state)
122 {
123 int err;
124
125 HEADER("Content Light Level Information");
126
127 ub(16, max_content_light_level);
128 ub(16, max_pic_average_light_level);
129
130 return 0;
131 }
132
133 static int FUNC(alternative_transfer_characteristics)
134 (CodedBitstreamContext *ctx, RWContext *rw,
135 SEIRawAlternativeTransferCharacteristics *current,
136 SEIMessageState *state)
137 {
138 int err;
139
140 HEADER("Alternative Transfer Characteristics");
141
142 ub(8, preferred_transfer_characteristics);
143
144 return 0;
145 }
146
147 11396 static int FUNC(message)(CodedBitstreamContext *ctx, RWContext *rw,
148 SEIRawMessage *current)
149 {
150 const SEIMessageTypeDescriptor *desc;
151 int err, i;
152
153 11396 desc = ff_cbs_sei_find_type(ctx, current->payload_type);
154
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11396 if (desc) {
155 11366 SEIMessageState state = {
156 11366 .payload_type = current->payload_type,
157 11366 .payload_size = current->payload_size,
158 11366 .extension_present = current->extension_bit_length > 0,
159 };
160 int start_position, current_position, bits_written;
161
162 #ifdef READ
163
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3790 CHECK(ff_cbs_sei_alloc_message_payload(current, desc));
164 #endif
165
166 11366 start_position = bit_position(rw);
167
168
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11366 CHECK(desc->READWRITE(ctx, rw, current->payload, &state));
169
170 11366 current_position = bit_position(rw);
171 11366 bits_written = current_position - start_position;
172
173
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11366 if (byte_alignment(rw) || state.extension_present ||
174
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8460 bits_written < 8 * current->payload_size) {
175 size_t bits_left;
176
177 #ifdef READ
178 970 GetBitContext tmp = *rw;
179 int trailing_bits, trailing_zero_bits;
180
181 970 bits_left = 8 * current->payload_size - bits_written;
182
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970 if (bits_left > 8)
183 skip_bits_long(&tmp, bits_left - 8);
184 970 trailing_bits = get_bits(&tmp, FFMIN(bits_left, 8));
185
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970 if (trailing_bits == 0) {
186 // The trailing bits must contain a bit_equal_to_one, so
187 // they can't all be zero.
188 return AVERROR_INVALIDDATA;
189 }
190 970 trailing_zero_bits = ff_ctz(trailing_bits);
191 970 current->extension_bit_length =
192 970 bits_left - 1 - trailing_zero_bits;
193 #endif
194
195
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2906 if (current->extension_bit_length > 0) {
196 allocate(current->extension_data,
197 (current->extension_bit_length + 7) / 8);
198
199 bits_left = current->extension_bit_length;
200 for (i = 0; bits_left > 0; i++) {
201 int length = FFMIN(bits_left, 8);
202 xu(length, reserved_payload_extension_data,
203 current->extension_data[i],
204 0, MAX_UINT_BITS(length), 0);
205 bits_left -= length;
206 }
207 }
208
209
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2906 fixed(1, bit_equal_to_one, 1);
210
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8910 while (byte_alignment(rw))
211
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6004 fixed(1, bit_equal_to_zero, 0);
212 }
213
214 #ifdef WRITE
215 7576 current->payload_size = (put_bits_count(rw) - start_position) / 8;
216 #endif
217 } else {
218 uint8_t *data;
219
220
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30 allocate(current->payload, current->payload_size);
221 30 data = current->payload;
222
223
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10494 for (i = 0; i < current->payload_size; i++)
224
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10464 xu(8, payload_byte[i], data[i], 0, 255, 1, i);
225 }
226
227 11396 return 0;
228 }
229
230 3759 static int FUNC(message_list)(CodedBitstreamContext *ctx, RWContext *rw,
231 SEIRawMessageList *current, int prefix)
232 {
233 SEIRawMessage *message;
234 int err, k;
235
236 #ifdef READ
237 1900 for (k = 0;; k++) {
238 1900 uint32_t payload_type = 0;
239 1900 uint32_t payload_size = 0;
240 uint32_t tmp;
241 GetBitContext payload_gbc;
242
243 1920 while (show_bits(rw, 8) == 0xff) {
244 20 fixed(8, ff_byte, 0xff);
245 20 payload_type += 255;
246 }
247 1900 xu(8, last_payload_type_byte, tmp, 0, 254, 0);
248 1900 payload_type += tmp;
249
250 1905 while (show_bits(rw, 8) == 0xff) {
251 5 fixed(8, ff_byte, 0xff);
252 5 payload_size += 255;
253 }
254 1900 xu(8, last_payload_size_byte, tmp, 0, 254, 0);
255 1900 payload_size += tmp;
256
257 // There must be space remaining for both the payload and
258 // the trailing bits on the SEI NAL unit.
259 1900 if (payload_size + 1 > get_bits_left(rw) / 8) {
260 av_log(ctx->log_ctx, AV_LOG_ERROR,
261 "Invalid SEI message: payload_size too large "
262 "(%"PRIu32" bytes).\n", payload_size);
263 return AVERROR_INVALIDDATA;
264 }
265 1900 CHECK(init_get_bits(&payload_gbc, rw->buffer,
266 get_bits_count(rw) + 8 * payload_size));
267 1900 skip_bits_long(&payload_gbc, get_bits_count(rw));
268
269 1900 CHECK(ff_cbs_sei_list_add(current));
270 1900 message = &current->messages[k];
271
272 1900 message->payload_type = payload_type;
273 1900 message->payload_size = payload_size;
274
275 1900 CHECK(FUNC(message)(ctx, &payload_gbc, message));
276
277 1900 skip_bits_long(rw, 8 * payload_size);
278
279 1900 if (!cbs_h2645_read_more_rbsp_data(rw))
280 1880 break;
281 }
282 #else
283 3778 for (k = 0; k < current->nb_messages; k++) {
284 PutBitContext start_state;
285 uint32_t tmp;
286 int trace, i;
287
288 1899 message = &current->messages[k];
289
290 // We write the payload twice in order to find the size. Trace
291 // output is switched off for the first write.
292 1899 trace = ctx->trace_enable;
293 1899 ctx->trace_enable = 0;
294
295 1899 start_state = *rw;
296 5697 for (i = 0; i < 2; i++) {
297 3798 *rw = start_state;
298
299 3798 tmp = message->payload_type;
300 3838 while (tmp >= 255) {
301 40 fixed(8, ff_byte, 0xff);
302 40 tmp -= 255;
303 }
304 3798 xu(8, last_payload_type_byte, tmp, 0, 254, 0);
305
306 3798 tmp = message->payload_size;
307 3808 while (tmp >= 255) {
308 10 fixed(8, ff_byte, 0xff);
309 10 tmp -= 255;
310 }
311 3798 xu(8, last_payload_size_byte, tmp, 0, 254, 0);
312
313 3798 err = FUNC(message)(ctx, rw, message);
314 3798 ctx->trace_enable = trace;
315 3798 if (err < 0)
316 return err;
317 }
318 }
319 #endif
320
321 3759 return 0;
322 }
323