Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(831)

Side by Side Diff: media/formats/mp4/box_reader.cc

Issue 1499423004: Remove kint32max. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@kint9
Patch Set: rebase Created 5 years ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « media/formats/mp4/box_reader.h ('k') | net/disk_cache/blockfile/backend_worker_v3.cc » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "media/formats/mp4/box_reader.h" 5 #include "media/formats/mp4/box_reader.h"
6 6
7 #include <string.h> 7 #include <string.h>
8 #include <algorithm> 8 #include <algorithm>
9 #include <set> 9 #include <set>
10 10
11 #include "base/memory/scoped_ptr.h" 11 #include "base/memory/scoped_ptr.h"
12 #include "media/formats/mp4/box_definitions.h" 12 #include "media/formats/mp4/box_definitions.h"
13 13
14 namespace media { 14 namespace media {
15 namespace mp4 { 15 namespace mp4 {
16 16
17 Box::~Box() {} 17 Box::~Box() {}
18 18
19 bool BufferReader::Read1(uint8* v) { 19 bool BufferReader::Read1(uint8_t* v) {
20 RCHECK(HasBytes(1)); 20 RCHECK(HasBytes(1));
21 *v = buf_[pos_++]; 21 *v = buf_[pos_++];
22 return true; 22 return true;
23 } 23 }
24 24
25 // Internal implementation of multi-byte reads 25 // Internal implementation of multi-byte reads
26 template<typename T> bool BufferReader::Read(T* v) { 26 template<typename T> bool BufferReader::Read(T* v) {
27 RCHECK(HasBytes(sizeof(T))); 27 RCHECK(HasBytes(sizeof(T)));
28 28
29 T tmp = 0; 29 T tmp = 0;
30 for (size_t i = 0; i < sizeof(T); i++) { 30 for (size_t i = 0; i < sizeof(T); i++) {
31 tmp <<= 8; 31 tmp <<= 8;
32 tmp += buf_[pos_++]; 32 tmp += buf_[pos_++];
33 } 33 }
34 *v = tmp; 34 *v = tmp;
35 return true; 35 return true;
36 } 36 }
37 37
38 bool BufferReader::Read2(uint16* v) { return Read(v); } 38 bool BufferReader::Read2(uint16_t* v) {
39 bool BufferReader::Read2s(int16* v) { return Read(v); } 39 return Read(v);
40 bool BufferReader::Read4(uint32* v) { return Read(v); } 40 }
41 bool BufferReader::Read4s(int32* v) { return Read(v); } 41 bool BufferReader::Read2s(int16_t* v) {
42 bool BufferReader::Read8(uint64* v) { return Read(v); } 42 return Read(v);
43 bool BufferReader::Read8s(int64* v) { return Read(v); } 43 }
44 bool BufferReader::Read4(uint32_t* v) {
45 return Read(v);
46 }
47 bool BufferReader::Read4s(int32_t* v) {
48 return Read(v);
49 }
50 bool BufferReader::Read8(uint64_t* v) {
51 return Read(v);
52 }
53 bool BufferReader::Read8s(int64_t* v) {
54 return Read(v);
55 }
44 56
45 bool BufferReader::ReadFourCC(FourCC* v) { 57 bool BufferReader::ReadFourCC(FourCC* v) {
46 return Read4(reinterpret_cast<uint32*>(v)); 58 return Read4(reinterpret_cast<uint32_t*>(v));
47 } 59 }
48 60
49 bool BufferReader::ReadVec(std::vector<uint8>* vec, uint64 count) { 61 bool BufferReader::ReadVec(std::vector<uint8_t>* vec, uint64_t count) {
50 RCHECK(HasBytes(count)); 62 RCHECK(HasBytes(count));
51 vec->clear(); 63 vec->clear();
52 vec->insert(vec->end(), buf_ + pos_, buf_ + pos_ + count); 64 vec->insert(vec->end(), buf_ + pos_, buf_ + pos_ + count);
53 pos_ += count; 65 pos_ += count;
54 return true; 66 return true;
55 } 67 }
56 68
57 bool BufferReader::SkipBytes(uint64 bytes) { 69 bool BufferReader::SkipBytes(uint64_t bytes) {
58 RCHECK(HasBytes(bytes)); 70 RCHECK(HasBytes(bytes));
59 pos_ += bytes; 71 pos_ += bytes;
60 return true; 72 return true;
61 } 73 }
62 74
63 bool BufferReader::Read4Into8(uint64* v) { 75 bool BufferReader::Read4Into8(uint64_t* v) {
64 uint32 tmp; 76 uint32_t tmp;
65 RCHECK(Read4(&tmp)); 77 RCHECK(Read4(&tmp));
66 *v = tmp; 78 *v = tmp;
67 return true; 79 return true;
68 } 80 }
69 81
70 bool BufferReader::Read4sInto8s(int64* v) { 82 bool BufferReader::Read4sInto8s(int64_t* v) {
71 // Beware of the need for sign extension. 83 // Beware of the need for sign extension.
72 int32 tmp; 84 int32_t tmp;
73 RCHECK(Read4s(&tmp)); 85 RCHECK(Read4s(&tmp));
74 *v = tmp; 86 *v = tmp;
75 return true; 87 return true;
76 } 88 }
77 89
78 BoxReader::BoxReader(const uint8* buf, 90 BoxReader::BoxReader(const uint8_t* buf,
79 const int size, 91 const int size,
80 const scoped_refptr<MediaLog>& media_log, 92 const scoped_refptr<MediaLog>& media_log,
81 bool is_EOS) 93 bool is_EOS)
82 : BufferReader(buf, size), 94 : BufferReader(buf, size),
83 media_log_(media_log), 95 media_log_(media_log),
84 type_(FOURCC_NULL), 96 type_(FOURCC_NULL),
85 version_(0), 97 version_(0),
86 flags_(0), 98 flags_(0),
87 scanned_(false), 99 scanned_(false),
88 is_EOS_(is_EOS) { 100 is_EOS_(is_EOS) {}
89 }
90 101
91 BoxReader::~BoxReader() { 102 BoxReader::~BoxReader() {
92 if (scanned_ && !children_.empty()) { 103 if (scanned_ && !children_.empty()) {
93 for (ChildMap::iterator itr = children_.begin(); 104 for (ChildMap::iterator itr = children_.begin();
94 itr != children_.end(); ++itr) { 105 itr != children_.end(); ++itr) {
95 DVLOG(1) << "Skipping unknown box: " << FourCCToString(itr->first); 106 DVLOG(1) << "Skipping unknown box: " << FourCCToString(itr->first);
96 } 107 }
97 } 108 }
98 } 109 }
99 110
100 // static 111 // static
101 BoxReader* BoxReader::ReadTopLevelBox(const uint8* buf, 112 BoxReader* BoxReader::ReadTopLevelBox(const uint8_t* buf,
102 const int buf_size, 113 const int buf_size,
103 const scoped_refptr<MediaLog>& media_log, 114 const scoped_refptr<MediaLog>& media_log,
104 bool* err) { 115 bool* err) {
105 scoped_ptr<BoxReader> reader(new BoxReader(buf, buf_size, media_log, false)); 116 scoped_ptr<BoxReader> reader(new BoxReader(buf, buf_size, media_log, false));
106 if (!reader->ReadHeader(err)) 117 if (!reader->ReadHeader(err))
107 return NULL; 118 return NULL;
108 119
109 if (!IsValidTopLevelBox(reader->type(), media_log)) { 120 if (!IsValidTopLevelBox(reader->type(), media_log)) {
110 *err = true; 121 *err = true;
111 return NULL; 122 return NULL;
112 } 123 }
113 124
114 if (reader->size() <= static_cast<uint64>(buf_size)) 125 if (reader->size() <= static_cast<uint64_t>(buf_size))
115 return reader.release(); 126 return reader.release();
116 127
117 return NULL; 128 return NULL;
118 } 129 }
119 130
120 // static 131 // static
121 bool BoxReader::StartTopLevelBox(const uint8* buf, 132 bool BoxReader::StartTopLevelBox(const uint8_t* buf,
122 const int buf_size, 133 const int buf_size,
123 const scoped_refptr<MediaLog>& media_log, 134 const scoped_refptr<MediaLog>& media_log,
124 FourCC* type, 135 FourCC* type,
125 int* box_size, 136 int* box_size,
126 bool* err) { 137 bool* err) {
127 BoxReader reader(buf, buf_size, media_log, false); 138 BoxReader reader(buf, buf_size, media_log, false);
128 if (!reader.ReadHeader(err)) return false; 139 if (!reader.ReadHeader(err)) return false;
129 if (!IsValidTopLevelBox(reader.type(), media_log)) { 140 if (!IsValidTopLevelBox(reader.type(), media_log)) {
130 *err = true; 141 *err = true;
131 return false; 142 return false;
132 } 143 }
133 *type = reader.type(); 144 *type = reader.type();
134 *box_size = reader.size(); 145 *box_size = reader.size();
135 return true; 146 return true;
136 } 147 }
137 148
138 // static 149 // static
139 BoxReader* BoxReader::ReadConcatentatedBoxes(const uint8* buf, 150 BoxReader* BoxReader::ReadConcatentatedBoxes(const uint8_t* buf,
140 const int buf_size) { 151 const int buf_size) {
141 return new BoxReader(buf, buf_size, new MediaLog(), true); 152 return new BoxReader(buf, buf_size, new MediaLog(), true);
142 } 153 }
143 154
144 // static 155 // static
145 bool BoxReader::IsValidTopLevelBox(const FourCC& type, 156 bool BoxReader::IsValidTopLevelBox(const FourCC& type,
146 const scoped_refptr<MediaLog>& media_log) { 157 const scoped_refptr<MediaLog>& media_log) {
147 switch (type) { 158 switch (type) {
148 case FOURCC_FTYP: 159 case FOURCC_FTYP:
149 case FOURCC_PDIN: 160 case FOURCC_PDIN:
(...skipping 55 matching lines...) Expand 10 before | Expand all | Expand 10 after
205 children_.erase(itr); 216 children_.erase(itr);
206 return true; 217 return true;
207 } 218 }
208 219
209 bool BoxReader::MaybeReadChild(Box* child) { 220 bool BoxReader::MaybeReadChild(Box* child) {
210 if (!children_.count(child->BoxType())) return true; 221 if (!children_.count(child->BoxType())) return true;
211 return ReadChild(child); 222 return ReadChild(child);
212 } 223 }
213 224
214 bool BoxReader::ReadFullBoxHeader() { 225 bool BoxReader::ReadFullBoxHeader() {
215 uint32 vflags; 226 uint32_t vflags;
216 RCHECK(Read4(&vflags)); 227 RCHECK(Read4(&vflags));
217 version_ = vflags >> 24; 228 version_ = vflags >> 24;
218 flags_ = vflags & 0xffffff; 229 flags_ = vflags & 0xffffff;
219 return true; 230 return true;
220 } 231 }
221 232
222 bool BoxReader::ReadHeader(bool* err) { 233 bool BoxReader::ReadHeader(bool* err) {
223 uint64 size = 0; 234 uint64_t size = 0;
224 *err = false; 235 *err = false;
225 236
226 if (!HasBytes(8)) { 237 if (!HasBytes(8)) {
227 // If EOS is known, then this is an error. If not, additional data may be 238 // If EOS is known, then this is an error. If not, additional data may be
228 // appended later, so this is a soft error. 239 // appended later, so this is a soft error.
229 *err = is_EOS_; 240 *err = is_EOS_;
230 return false; 241 return false;
231 } 242 }
232 CHECK(Read4Into8(&size) && ReadFourCC(&type_)); 243 CHECK(Read4Into8(&size) && ReadFourCC(&type_));
233 244
(...skipping 11 matching lines...) Expand all
245 if (!HasBytes(8)) { 256 if (!HasBytes(8)) {
246 // If EOS is known, then this is an error. If not, it's a soft error. 257 // If EOS is known, then this is an error. If not, it's a soft error.
247 *err = is_EOS_; 258 *err = is_EOS_;
248 return false; 259 return false;
249 } 260 }
250 CHECK(Read8(&size)); 261 CHECK(Read8(&size));
251 } 262 }
252 263
253 // Implementation-specific: support for boxes larger than 2^31 has been 264 // Implementation-specific: support for boxes larger than 2^31 has been
254 // removed. 265 // removed.
255 if (size < static_cast<uint64>(pos_) || 266 if (size < static_cast<uint64_t>(pos_) ||
256 size > static_cast<uint64>(kint32max)) { 267 size > static_cast<uint64_t>(std::numeric_limits<int32_t>::max())) {
257 *err = true; 268 *err = true;
258 return false; 269 return false;
259 } 270 }
260 271
261 // Make sure the buffer contains at least the expected number of bytes. 272 // Make sure the buffer contains at least the expected number of bytes.
262 // Since the data may be appended in pieces, this can only be checked if EOS. 273 // Since the data may be appended in pieces, this can only be checked if EOS.
263 if (is_EOS_ && size > size_) { 274 if (is_EOS_ && size > size_) {
264 *err = true; 275 *err = true;
265 return false; 276 return false;
266 } 277 }
267 278
268 // Note that the pos_ head has advanced to the byte immediately after the 279 // Note that the pos_ head has advanced to the byte immediately after the
269 // header, which is where we want it. 280 // header, which is where we want it.
270 size_ = size; 281 size_ = size;
271 return true; 282 return true;
272 } 283 }
273 284
274 } // namespace mp4 285 } // namespace mp4
275 } // namespace media 286 } // namespace media
OLDNEW
« no previous file with comments | « media/formats/mp4/box_reader.h ('k') | net/disk_cache/blockfile/backend_worker_v3.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698