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Side by Side Diff: source/libvpx/libmkv/EbmlWriter.c

Issue 11555023: libvpx: Add VP9 decoder. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 8 years ago
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1 /* 1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source 5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 #include "EbmlWriter.h" 10 #include "EbmlWriter.h"
11 #include <stdlib.h> 11 #include <stdlib.h>
12 #include <wchar.h> 12 #include <wchar.h>
13 #include <string.h> 13 #include <string.h>
14 #include <limits.h> 14 #include <limits.h>
15 #if defined(_MSC_VER) 15 #if defined(_MSC_VER)
16 #define LITERALU64(n) n 16 #define LITERALU64(n) n
17 #else 17 #else
18 #define LITERALU64(n) n##LLU 18 #define LITERALU64(n) n##LLU
19 #endif 19 #endif
20 20
21 void Ebml_WriteLen(EbmlGlobal *glob, int64_t val) 21 void Ebml_WriteLen(EbmlGlobal *glob, int64_t val) {
22 { 22 /* TODO check and make sure we are not > than 0x0100000000000000LLU */
23 /* TODO check and make sure we are not > than 0x0100000000000000LLU */ 23 unsigned char size = 8; /* size in bytes to output */
24 unsigned char size = 8; /* size in bytes to output */
25 24
26 /* mask to compare for byte size */ 25 /* mask to compare for byte size */
27 int64_t minVal = 0xff; 26 int64_t minVal = 0xff;
28 27
29 for (size = 1; size < 8; size ++) 28 for (size = 1; size < 8; size ++) {
30 { 29 if (val < minVal)
31 if (val < minVal) 30 break;
32 break;
33 31
34 minVal = (minVal << 7); 32 minVal = (minVal << 7);
33 }
34
35 val |= (((uint64_t)0x80) << ((size - 1) * 7));
36
37 Ebml_Serialize(glob, (void *) &val, sizeof(val), size);
38 }
39
40 void Ebml_WriteString(EbmlGlobal *glob, const char *str) {
41 const size_t size_ = strlen(str);
42 const uint64_t size = size_;
43 Ebml_WriteLen(glob, size);
44 /* TODO: it's not clear from the spec whether the nul terminator
45 * should be serialized too. For now we omit the null terminator.
46 */
47 Ebml_Write(glob, str, (unsigned long)size);
48 }
49
50 void Ebml_WriteUTF8(EbmlGlobal *glob, const wchar_t *wstr) {
51 const size_t strlen = wcslen(wstr);
52
53 /* TODO: it's not clear from the spec whether the nul terminator
54 * should be serialized too. For now we include it.
55 */
56 const uint64_t size = strlen;
57
58 Ebml_WriteLen(glob, size);
59 Ebml_Write(glob, wstr, (unsigned long)size);
60 }
61
62 void Ebml_WriteID(EbmlGlobal *glob, unsigned long class_id) {
63 int len;
64
65 if (class_id >= 0x01000000)
66 len = 4;
67 else if (class_id >= 0x00010000)
68 len = 3;
69 else if (class_id >= 0x00000100)
70 len = 2;
71 else
72 len = 1;
73
74 Ebml_Serialize(glob, (void *)&class_id, sizeof(class_id), len);
75 }
76
77 void Ebml_SerializeUnsigned64(EbmlGlobal *glob, unsigned long class_id, uint64_t ui) {
78 unsigned char sizeSerialized = 8 | 0x80;
79 Ebml_WriteID(glob, class_id);
80 Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
81 Ebml_Serialize(glob, &ui, sizeof(ui), 8);
82 }
83
84 void Ebml_SerializeUnsigned(EbmlGlobal *glob, unsigned long class_id, unsigned l ong ui) {
85 unsigned char size = 8; /* size in bytes to output */
86 unsigned char sizeSerialized = 0;
87 unsigned long minVal;
88
89 Ebml_WriteID(glob, class_id);
90 minVal = 0x7fLU; /* mask to compare for byte size */
91
92 for (size = 1; size < 4; size ++) {
93 if (ui < minVal) {
94 break;
35 } 95 }
36 96
37 val |= (((uint64_t)0x80) << ((size - 1) * 7)); 97 minVal <<= 7;
98 }
38 99
39 Ebml_Serialize(glob, (void *) &val, sizeof(val), size); 100 sizeSerialized = 0x80 | size;
101 Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
102 Ebml_Serialize(glob, &ui, sizeof(ui), size);
103 }
104 /* TODO: perhaps this is a poor name for this id serializer helper function */
105 void Ebml_SerializeBinary(EbmlGlobal *glob, unsigned long class_id, unsigned lon g bin) {
106 int size;
107 for (size = 4; size > 1; size--) {
108 if (bin & 0x000000ff << ((size - 1) * 8))
109 break;
110 }
111 Ebml_WriteID(glob, class_id);
112 Ebml_WriteLen(glob, size);
113 Ebml_WriteID(glob, bin);
40 } 114 }
41 115
42 void Ebml_WriteString(EbmlGlobal *glob, const char *str) 116 void Ebml_SerializeFloat(EbmlGlobal *glob, unsigned long class_id, double d) {
43 { 117 unsigned char len = 0x88;
44 const size_t size_ = strlen(str); 118
45 const uint64_t size = size_; 119 Ebml_WriteID(glob, class_id);
46 Ebml_WriteLen(glob, size); 120 Ebml_Serialize(glob, &len, sizeof(len), 1);
47 /* TODO: it's not clear from the spec whether the nul terminator 121 Ebml_Serialize(glob, &d, sizeof(d), 8);
48 * should be serialized too. For now we omit the null terminator.
49 */
50 Ebml_Write(glob, str, (unsigned long)size);
51 } 122 }
52 123
53 void Ebml_WriteUTF8(EbmlGlobal *glob, const wchar_t *wstr) 124 void Ebml_WriteSigned16(EbmlGlobal *glob, short val) {
54 { 125 signed long out = ((val & 0x003FFFFF) | 0x00200000) << 8;
55 const size_t strlen = wcslen(wstr); 126 Ebml_Serialize(glob, &out, sizeof(out), 3);
56
57 /* TODO: it's not clear from the spec whether the nul terminator
58 * should be serialized too. For now we include it.
59 */
60 const uint64_t size = strlen;
61
62 Ebml_WriteLen(glob, size);
63 Ebml_Write(glob, wstr, (unsigned long)size);
64 } 127 }
65 128
66 void Ebml_WriteID(EbmlGlobal *glob, unsigned long class_id) 129 void Ebml_SerializeString(EbmlGlobal *glob, unsigned long class_id, const char * s) {
67 { 130 Ebml_WriteID(glob, class_id);
68 int len; 131 Ebml_WriteString(glob, s);
69
70 if (class_id >= 0x01000000)
71 len = 4;
72 else if (class_id >= 0x00010000)
73 len = 3;
74 else if (class_id >= 0x00000100)
75 len = 2;
76 else
77 len = 1;
78
79 Ebml_Serialize(glob, (void *)&class_id, sizeof(class_id), len);
80 } 132 }
81 133
82 void Ebml_SerializeUnsigned64(EbmlGlobal *glob, unsigned long class_id, uint64_t ui) 134 void Ebml_SerializeUTF8(EbmlGlobal *glob, unsigned long class_id, wchar_t *s) {
83 { 135 Ebml_WriteID(glob, class_id);
84 unsigned char sizeSerialized = 8 | 0x80; 136 Ebml_WriteUTF8(glob, s);
85 Ebml_WriteID(glob, class_id);
86 Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
87 Ebml_Serialize(glob, &ui, sizeof(ui), 8);
88 } 137 }
89 138
90 void Ebml_SerializeUnsigned(EbmlGlobal *glob, unsigned long class_id, unsigned l ong ui) 139 void Ebml_SerializeData(EbmlGlobal *glob, unsigned long class_id, unsigned char *data, unsigned long data_length) {
91 { 140 Ebml_WriteID(glob, class_id);
92 unsigned char size = 8; /* size in bytes to output */ 141 Ebml_WriteLen(glob, data_length);
93 unsigned char sizeSerialized = 0; 142 Ebml_Write(glob, data, data_length);
94 unsigned long minVal;
95
96 Ebml_WriteID(glob, class_id);
97 minVal = 0x7fLU; /* mask to compare for byte size */
98
99 for (size = 1; size < 4; size ++)
100 {
101 if (ui < minVal)
102 {
103 break;
104 }
105
106 minVal <<= 7;
107 }
108
109 sizeSerialized = 0x80 | size;
110 Ebml_Serialize(glob, &sizeSerialized, sizeof(sizeSerialized), 1);
111 Ebml_Serialize(glob, &ui, sizeof(ui), size);
112 }
113 /* TODO: perhaps this is a poor name for this id serializer helper function */
114 void Ebml_SerializeBinary(EbmlGlobal *glob, unsigned long class_id, unsigned lon g bin)
115 {
116 int size;
117 for (size=4; size > 1; size--)
118 {
119 if (bin & 0x000000ff << ((size-1) * 8))
120 break;
121 }
122 Ebml_WriteID(glob, class_id);
123 Ebml_WriteLen(glob, size);
124 Ebml_WriteID(glob, bin);
125 } 143 }
126 144
127 void Ebml_SerializeFloat(EbmlGlobal *glob, unsigned long class_id, double d) 145 void Ebml_WriteVoid(EbmlGlobal *glob, unsigned long vSize) {
128 { 146 unsigned char tmp = 0;
129 unsigned char len = 0x88; 147 unsigned long i = 0;
130 148
131 Ebml_WriteID(glob, class_id); 149 Ebml_WriteID(glob, 0xEC);
132 Ebml_Serialize(glob, &len, sizeof(len), 1); 150 Ebml_WriteLen(glob, vSize);
133 Ebml_Serialize(glob, &d, sizeof(d), 8);
134 }
135 151
136 void Ebml_WriteSigned16(EbmlGlobal *glob, short val) 152 for (i = 0; i < vSize; i++) {
137 { 153 Ebml_Write(glob, &tmp, 1);
138 signed long out = ((val & 0x003FFFFF) | 0x00200000) << 8; 154 }
139 Ebml_Serialize(glob, &out, sizeof(out), 3);
140 }
141
142 void Ebml_SerializeString(EbmlGlobal *glob, unsigned long class_id, const char * s)
143 {
144 Ebml_WriteID(glob, class_id);
145 Ebml_WriteString(glob, s);
146 }
147
148 void Ebml_SerializeUTF8(EbmlGlobal *glob, unsigned long class_id, wchar_t *s)
149 {
150 Ebml_WriteID(glob, class_id);
151 Ebml_WriteUTF8(glob, s);
152 }
153
154 void Ebml_SerializeData(EbmlGlobal *glob, unsigned long class_id, unsigned char *data, unsigned long data_length)
155 {
156 Ebml_WriteID(glob, class_id);
157 Ebml_WriteLen(glob, data_length);
158 Ebml_Write(glob, data, data_length);
159 }
160
161 void Ebml_WriteVoid(EbmlGlobal *glob, unsigned long vSize)
162 {
163 unsigned char tmp = 0;
164 unsigned long i = 0;
165
166 Ebml_WriteID(glob, 0xEC);
167 Ebml_WriteLen(glob, vSize);
168
169 for (i = 0; i < vSize; i++)
170 {
171 Ebml_Write(glob, &tmp, 1);
172 }
173 } 155 }
174 156
175 /* TODO Serialize Date */ 157 /* TODO Serialize Date */
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