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1 | /***************************************************************************** |
2 | * Copyright (C) 2013 x265 project | |
3 | * | |
4 | * Authors: Steve Borho <steve@borho.org> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program 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 | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
19 | * | |
20 | * This program is also available under a commercial proprietary license. | |
21 | * For more information, contact us at license @ x265.com. | |
22 | *****************************************************************************/ | |
23 | ||
24 | #include "common.h" | |
25 | #include "bitstream.h" | |
26 | #include "slice.h" | |
27 | #include "sei.h" | |
28 | ||
29 | using namespace x265; | |
30 | ||
31 | /* x265's identifying GUID */ | |
32 | const uint8_t SEIuserDataUnregistered::m_uuid_iso_iec_11578[16] = { | |
33 | 0x2C, 0xA2, 0xDE, 0x09, 0xB5, 0x17, 0x47, 0xDB, | |
34 | 0xBB, 0x55, 0xA4, 0xFE, 0x7F, 0xC2, 0xFC, 0x4E | |
35 | }; | |
36 | ||
37 | /* marshal a single SEI message sei, storing the marshalled representation | |
38 | * in bitstream bs */ | |
39 | void SEI::write(Bitstream& bs, const SPS& sps) | |
40 | { | |
41 | BitCounter count; | |
42 | m_bitIf = &count; | |
43 | ||
44 | /* virtual writeSEI method, write to bit counter */ | |
45 | writeSEI(sps); | |
46 | ||
47 | m_bitIf = &bs; | |
48 | uint32_t type = payloadType(); | |
49 | for (; type >= 0xff; type -= 0xff) | |
50 | WRITE_CODE(0xff, 8, "payload_type"); | |
51 | WRITE_CODE(type, 8, "payload_type"); | |
52 | ||
53 | X265_CHECK(0 == (count.getNumberOfWrittenBits() & 7), "payload unaligned\n"); | |
54 | uint32_t payloadSize = count.getNumberOfWrittenBits() >> 3; | |
55 | for (; payloadSize >= 0xff; payloadSize -= 0xff) | |
56 | WRITE_CODE(0xff, 8, "payload_size"); | |
57 | WRITE_CODE(payloadSize, 8, "payload_size"); | |
58 | ||
59 | /* virtual writeSEI method, write to bs */ | |
60 | writeSEI(sps); | |
61 | } | |
62 | ||
63 | void SEI::writeByteAlign() | |
64 | { | |
65 | // TODO: expose bs.writeByteAlignment() as virtual function | |
66 | if (m_bitIf->getNumberOfWrittenBits() % 8 != 0) | |
67 | { | |
68 | WRITE_FLAG(1, "bit_equal_to_one"); | |
69 | while (m_bitIf->getNumberOfWrittenBits() % 8 != 0) | |
70 | { | |
71 | WRITE_FLAG(0, "bit_equal_to_zero"); | |
72 | } | |
73 | } | |
74 | } |