1 |
/*************************************************************************** |
2 |
* * |
3 |
* libgig - C++ cross-platform Gigasampler format file access library * |
4 |
* * |
5 |
* Copyright (C) 2003-2019 by Christian Schoenebeck * |
6 |
* <cuse@users.sourceforge.net> * |
7 |
* * |
8 |
* This library is free software; you can redistribute it and/or modify * |
9 |
* it under the terms of the GNU General Public License as published by * |
10 |
* the Free Software Foundation; either version 2 of the License, or * |
11 |
* (at your option) any later version. * |
12 |
* * |
13 |
* This library is distributed in the hope that it will be useful, * |
14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
16 |
* GNU General Public License for more details. * |
17 |
* * |
18 |
* You should have received a copy of the GNU General Public License * |
19 |
* along with this library; if not, write to the Free Software * |
20 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
21 |
* MA 02111-1307 USA * |
22 |
***************************************************************************/ |
23 |
|
24 |
#ifndef __RIFF_H__ |
25 |
#define __RIFF_H__ |
26 |
|
27 |
#ifdef WIN32 |
28 |
# define POSIX 0 |
29 |
#endif |
30 |
|
31 |
#ifndef POSIX |
32 |
# define POSIX 1 |
33 |
#endif |
34 |
|
35 |
#ifndef DEBUG |
36 |
# define DEBUG 0 |
37 |
#endif |
38 |
|
39 |
#ifndef OVERRIDE |
40 |
# if defined(__cplusplus) && __cplusplus >= 201103L |
41 |
# define OVERRIDE override |
42 |
# endif |
43 |
#endif |
44 |
|
45 |
#include <string> |
46 |
#include <list> |
47 |
#include <map> |
48 |
#include <set> |
49 |
#include <vector> |
50 |
#include <iostream> |
51 |
#include <stdarg.h> |
52 |
|
53 |
#ifdef HAVE_CONFIG_H |
54 |
# include <config.h> |
55 |
#endif |
56 |
|
57 |
#if POSIX |
58 |
# include <sys/types.h> |
59 |
# include <sys/stat.h> |
60 |
# include <fcntl.h> |
61 |
# include <unistd.h> |
62 |
#endif // POSIX |
63 |
|
64 |
#if defined _MSC_VER && _MSC_VER < 1600 |
65 |
// Visual C++ 2008 doesn't have stdint.h |
66 |
typedef __int8 int8_t; |
67 |
typedef __int16 int16_t; |
68 |
typedef __int32 int32_t; |
69 |
typedef __int64 int64_t; |
70 |
typedef unsigned __int8 uint8_t; |
71 |
typedef unsigned __int16 uint16_t; |
72 |
typedef unsigned __int32 uint32_t; |
73 |
typedef unsigned __int64 uint64_t; |
74 |
#else |
75 |
#include <stdint.h> |
76 |
#endif |
77 |
|
78 |
#ifdef WIN32 |
79 |
# if (_WIN32 && !_WIN64) || (__GNUC__ && !(__x86_64__ || __ppc64__)) /* if 32 bit windows compilation */ |
80 |
# if _WIN32_WINNT < 0x0501 |
81 |
# undef _WIN32_WINNT |
82 |
# define _WIN32_WINNT 0x0501 /* Win XP (no service pack): required for 32 bit compilation for GetFileSizeEx() to be declared by windows.h */ |
83 |
# endif |
84 |
# endif |
85 |
# include <windows.h> |
86 |
typedef unsigned int uint; |
87 |
#endif // WIN32 |
88 |
|
89 |
#include <stdio.h> |
90 |
|
91 |
#if WORDS_BIGENDIAN |
92 |
# define CHUNK_ID_RIFF 0x52494646 |
93 |
# define CHUNK_ID_RIFX 0x52494658 |
94 |
# define CHUNK_ID_LIST 0x4C495354 |
95 |
|
96 |
# define LIST_TYPE_INFO 0x494E464F |
97 |
# define CHUNK_ID_ICMT 0x49434D54 |
98 |
# define CHUNK_ID_ICOP 0x49434F50 |
99 |
# define CHUNK_ID_ICRD 0x49435244 |
100 |
# define CHUNK_ID_IENG 0x49454E47 |
101 |
# define CHUNK_ID_INAM 0x494E414D |
102 |
# define CHUNK_ID_IPRD 0x49505244 |
103 |
# define CHUNK_ID_ISFT 0x49534654 |
104 |
|
105 |
# define CHUNK_ID_SMPL 0x736D706C |
106 |
|
107 |
#else // little endian |
108 |
# define CHUNK_ID_RIFF 0x46464952 |
109 |
# define CHUNK_ID_RIFX 0x58464952 |
110 |
# define CHUNK_ID_LIST 0x5453494C |
111 |
|
112 |
# define LIST_TYPE_INFO 0x4F464E49 |
113 |
# define CHUNK_ID_ICMT 0x544D4349 |
114 |
# define CHUNK_ID_ICOP 0x504F4349 |
115 |
# define CHUNK_ID_ICRD 0x44524349 |
116 |
# define CHUNK_ID_IENG 0x474E4549 |
117 |
# define CHUNK_ID_INAM 0x4D414E49 |
118 |
# define CHUNK_ID_IPRD 0x44525049 |
119 |
# define CHUNK_ID_ISFT 0x54465349 |
120 |
|
121 |
# define CHUNK_ID_SMPL 0x6C706D73 |
122 |
|
123 |
#endif // WORDS_BIGENDIAN |
124 |
|
125 |
#define CHUNK_HEADER_SIZE(fileOffsetSize) (4 + fileOffsetSize) |
126 |
#define LIST_HEADER_SIZE(fileOffsetSize) (8 + fileOffsetSize) |
127 |
#define RIFF_HEADER_SIZE(fileOffsetSize) (8 + fileOffsetSize) |
128 |
|
129 |
/** |
130 |
* @brief RIFF specific classes and definitions |
131 |
* |
132 |
* The Resource Interchange File Format (RIFF) is a generic tree-structured |
133 |
* meta-format which stores data in so called "chunks". It can be compared |
134 |
* to XML, but in contrast to XML, RIFF is entirely binary encoded, that is |
135 |
* not ASCII based. RIFF is used as basis for many file formats like AVI, |
136 |
* WAV, DLS and of course the Gigasampler file format. ;-) |
137 |
* |
138 |
* RIFF chunks can be seen as containers for data. There are two distinct |
139 |
* types of chunks: |
140 |
* |
141 |
* - @e ordinary @e chunks are the leafs of the data tree which encapsulate |
142 |
* the actual data of the file (i.e. the sample data of a .wav file) |
143 |
* |
144 |
* - @e list @e chunks are the nodes of the data tree which hold an |
145 |
* arbitrary amount of subchunks (can be both, list chunks and/or ordinary |
146 |
* chunks) |
147 |
*/ |
148 |
namespace RIFF { |
149 |
|
150 |
/* just symbol prototyping */ |
151 |
class Chunk; |
152 |
class List; |
153 |
class File; |
154 |
|
155 |
typedef std::string String; |
156 |
|
157 |
/** Type used by libgig for handling file positioning during file I/O tasks. */ |
158 |
typedef uint64_t file_offset_t; |
159 |
|
160 |
/** Whether file stream is open in read or in read/write mode. */ |
161 |
enum stream_mode_t { |
162 |
stream_mode_read = 0, |
163 |
stream_mode_read_write = 1, |
164 |
stream_mode_closed = 2 |
165 |
}; |
166 |
|
167 |
/** Current state of the file stream. */ |
168 |
enum stream_state_t { |
169 |
stream_ready = 0, |
170 |
stream_end_reached = 1, |
171 |
stream_closed = 2 |
172 |
}; |
173 |
|
174 |
/** File stream position dependent to these relations. */ |
175 |
enum stream_whence_t { |
176 |
stream_start = 0, |
177 |
stream_curpos = 1, |
178 |
stream_backward = 2, |
179 |
stream_end = 3 |
180 |
}; |
181 |
|
182 |
/** Alignment of data bytes in memory (system dependant). */ |
183 |
enum endian_t { |
184 |
endian_little = 0, |
185 |
endian_big = 1, |
186 |
endian_native = 2 |
187 |
}; |
188 |
|
189 |
/** General RIFF chunk structure of a RIFF file. */ |
190 |
enum layout_t { |
191 |
layout_standard = 0, ///< Standard RIFF file layout: First chunk in file is a List chunk which contains all other chunks and there are no chunks outside the scope of that very first (List) chunk. |
192 |
layout_flat = 1 ///< Not a "real" RIFF file: First chunk in file is an ordinary data chunk, not a List chunk, and there might be other chunks after that first chunk. |
193 |
}; |
194 |
|
195 |
/** Size of RIFF file offsets used in all RIFF chunks' headers. @see File::GetFileOffsetSize() */ |
196 |
enum offset_size_t { |
197 |
offset_size_auto = 0, ///< Use 32 bit offsets for files smaller than 4 GB, use 64 bit offsets for files equal or larger than 4 GB. |
198 |
offset_size_32bit = 4, ///< Always use 32 bit offsets (even for files larger than 4 GB). |
199 |
offset_size_64bit = 8 ///< Always use 64 bit offsets (even for files smaller than 4 GB). |
200 |
}; |
201 |
|
202 |
/** |
203 |
* @brief Used for indicating the progress of a certain task. |
204 |
* |
205 |
* The function pointer argument has to be supplied with a valid |
206 |
* function of the given signature which will then be called on |
207 |
* progress changes. An equivalent progress_t structure will be passed |
208 |
* back as argument to the callback function on each progress change. |
209 |
* The factor field of the supplied progress_t structure will then |
210 |
* reflect the current progress as value between 0.0 and 1.0. You might |
211 |
* want to use the custom field for data needed in your callback |
212 |
* function. |
213 |
*/ |
214 |
struct progress_t { |
215 |
void (*callback)(progress_t*); ///< Callback function pointer which has to be assigned to a function for progress notification. |
216 |
float factor; ///< Reflects current progress as value between 0.0 and 1.0. |
217 |
void* custom; ///< This pointer can be used for arbitrary data. |
218 |
float __range_min; ///< Only for internal usage, do not modify! |
219 |
float __range_max; ///< Only for internal usage, do not modify! |
220 |
progress_t(); |
221 |
std::vector<progress_t> subdivide(int iSubtasks); |
222 |
}; |
223 |
|
224 |
/** @brief Ordinary RIFF Chunk |
225 |
* |
226 |
* Provides convenient methods to access data of ordinary RIFF chunks |
227 |
* in general. |
228 |
*/ |
229 |
class Chunk { |
230 |
public: |
231 |
Chunk(File* pFile, file_offset_t StartPos, List* Parent); |
232 |
String GetChunkIDString() const; |
233 |
uint32_t GetChunkID() const { return ChunkID; } ///< Chunk ID in unsigned integer representation. |
234 |
File* GetFile() const { return pFile; } ///< Returns pointer to the chunk's File object. |
235 |
List* GetParent() const { return pParent; } ///< Returns pointer to the chunk's parent list chunk. |
236 |
file_offset_t GetSize() const { return ullCurrentChunkSize; } ///< Chunk size in bytes (without header, thus the chunk data body) |
237 |
file_offset_t GetNewSize() const { return ullNewChunkSize; } ///< New chunk size if it was modified with Resize(), otherwise value returned will be equal to GetSize(). |
238 |
file_offset_t GetPos() const { return ullPos; } ///< Position within the chunk data body (starting with 0). |
239 |
file_offset_t GetFilePos() const { return ullStartPos + ullPos; } ///< Current, actual offset of chunk data body start in file. |
240 |
file_offset_t SetPos(file_offset_t Where, stream_whence_t Whence = stream_start); |
241 |
file_offset_t RemainingBytes() const; |
242 |
stream_state_t GetState() const; |
243 |
file_offset_t Read(void* pData, file_offset_t WordCount, file_offset_t WordSize); |
244 |
file_offset_t ReadInt8(int8_t* pData, file_offset_t WordCount = 1); |
245 |
file_offset_t ReadUint8(uint8_t* pData, file_offset_t WordCount = 1); |
246 |
file_offset_t ReadInt16(int16_t* pData, file_offset_t WordCount = 1); |
247 |
file_offset_t ReadUint16(uint16_t* pData, file_offset_t WordCount = 1); |
248 |
file_offset_t ReadInt32(int32_t* pData, file_offset_t WordCount = 1); |
249 |
file_offset_t ReadUint32(uint32_t* pData, file_offset_t WordCount = 1); |
250 |
int8_t ReadInt8(); |
251 |
uint8_t ReadUint8(); |
252 |
int16_t ReadInt16(); |
253 |
uint16_t ReadUint16(); |
254 |
int32_t ReadInt32(); |
255 |
uint32_t ReadUint32(); |
256 |
void ReadString(String& s, int size); |
257 |
file_offset_t Write(void* pData, file_offset_t WordCount, file_offset_t WordSize); |
258 |
file_offset_t WriteInt8(int8_t* pData, file_offset_t WordCount = 1); |
259 |
file_offset_t WriteUint8(uint8_t* pData, file_offset_t WordCount = 1); |
260 |
file_offset_t WriteInt16(int16_t* pData, file_offset_t WordCount = 1); |
261 |
file_offset_t WriteUint16(uint16_t* pData, file_offset_t WordCount = 1); |
262 |
file_offset_t WriteInt32(int32_t* pData, file_offset_t WordCount = 1); |
263 |
file_offset_t WriteUint32(uint32_t* pData, file_offset_t WordCount = 1); |
264 |
void* LoadChunkData(); |
265 |
void ReleaseChunkData(); |
266 |
void Resize(file_offset_t NewSize); |
267 |
virtual ~Chunk(); |
268 |
protected: |
269 |
uint32_t ChunkID; |
270 |
file_offset_t ullCurrentChunkSize; /* in bytes */ |
271 |
file_offset_t ullNewChunkSize; /* in bytes (if chunk was scheduled to be resized) */ |
272 |
List* pParent; |
273 |
File* pFile; |
274 |
file_offset_t ullStartPos; /* actual position in file where chunk data (without header) starts */ |
275 |
file_offset_t ullPos; /* # of bytes from ulStartPos */ |
276 |
uint8_t* pChunkData; |
277 |
file_offset_t ullChunkDataSize; |
278 |
|
279 |
Chunk(File* pFile); |
280 |
Chunk(File* pFile, List* pParent, uint32_t uiChunkID, file_offset_t ullBodySize); |
281 |
void ReadHeader(file_offset_t filePos); |
282 |
void WriteHeader(file_offset_t filePos); |
283 |
file_offset_t ReadSceptical(void* pData, file_offset_t WordCount, file_offset_t WordSize); |
284 |
inline static String convertToString(uint32_t word) { |
285 |
String result; |
286 |
for (int i = 0; i < 4; i++) { |
287 |
uint8_t byte = *((uint8_t*)(&word) + i); |
288 |
char c = byte; |
289 |
result += c; |
290 |
} |
291 |
return result; |
292 |
} |
293 |
virtual file_offset_t RequiredPhysicalSize(int fileOffsetSize); |
294 |
virtual file_offset_t WriteChunk(file_offset_t ullWritePos, file_offset_t ullCurrentDataOffset, progress_t* pProgress = NULL); |
295 |
virtual void __resetPos(); ///< Sets Chunk's read/write position to zero. |
296 |
|
297 |
friend class List; |
298 |
}; |
299 |
|
300 |
/** @brief RIFF List Chunk |
301 |
* |
302 |
* Provides convenient methods to access data of RIFF list chunks and |
303 |
* their subchunks. |
304 |
*/ |
305 |
class List : public Chunk { |
306 |
public: |
307 |
List(File* pFile, file_offset_t StartPos, List* Parent); |
308 |
String GetListTypeString() const; |
309 |
uint32_t GetListType() const { return ListType; } ///< Returns unsigned integer representation of the list's ID |
310 |
Chunk* GetSubChunk(uint32_t ChunkID); |
311 |
List* GetSubList(uint32_t ListType); |
312 |
Chunk* GetFirstSubChunk(); |
313 |
Chunk* GetNextSubChunk(); |
314 |
List* GetFirstSubList(); |
315 |
List* GetNextSubList(); |
316 |
size_t CountSubChunks(); |
317 |
size_t CountSubChunks(uint32_t ChunkID); |
318 |
size_t CountSubLists(); |
319 |
size_t CountSubLists(uint32_t ListType); |
320 |
Chunk* AddSubChunk(uint32_t uiChunkID, file_offset_t ullBodySize); |
321 |
List* AddSubList(uint32_t uiListType); |
322 |
void DeleteSubChunk(Chunk* pSubChunk); |
323 |
void MoveSubChunk(Chunk* pSrc, Chunk* pDst); // read API doc comments !!! |
324 |
void MoveSubChunk(Chunk* pSrc, List* pNewParent); |
325 |
virtual ~List(); |
326 |
protected: |
327 |
typedef std::map<uint32_t, RIFF::Chunk*> ChunkMap; |
328 |
typedef std::list<Chunk*> ChunkList; |
329 |
typedef std::set<Chunk*> ChunkSet; |
330 |
|
331 |
uint32_t ListType; |
332 |
ChunkList* pSubChunks; |
333 |
ChunkMap* pSubChunksMap; |
334 |
ChunkList::iterator ChunksIterator; |
335 |
ChunkList::iterator ListIterator; |
336 |
|
337 |
List(File* pFile); |
338 |
List(File* pFile, List* pParent, uint32_t uiListID); |
339 |
void ReadHeader(file_offset_t filePos); |
340 |
void WriteHeader(file_offset_t filePos); |
341 |
void LoadSubChunks(progress_t* pProgress = NULL); |
342 |
void LoadSubChunksRecursively(progress_t* pProgress = NULL); |
343 |
virtual file_offset_t RequiredPhysicalSize(int fileOffsetSize); |
344 |
virtual file_offset_t WriteChunk(file_offset_t ullWritePos, file_offset_t ullCurrentDataOffset, progress_t* pProgress = NULL); |
345 |
virtual void __resetPos(); ///< Sets List Chunk's read/write position to zero and causes all sub chunks to do the same. |
346 |
void DeleteChunkList(); |
347 |
}; |
348 |
|
349 |
/** @brief RIFF File |
350 |
* |
351 |
* Handles arbitrary RIFF files and provides together with its base |
352 |
* classes convenient methods to walk through, read and modify the |
353 |
* file's RIFF tree. |
354 |
*/ |
355 |
class File : public List { |
356 |
public: |
357 |
File(uint32_t FileType); |
358 |
File(const String& path); |
359 |
File(const String& path, uint32_t FileType, endian_t Endian, layout_t layout, offset_size_t fileOffsetSize = offset_size_auto); |
360 |
stream_mode_t GetMode() const; |
361 |
bool SetMode(stream_mode_t NewMode); |
362 |
void SetByteOrder(endian_t Endian); |
363 |
String GetFileName() const; |
364 |
void SetFileName(const String& path); |
365 |
bool IsNew() const; |
366 |
layout_t GetLayout() const; |
367 |
file_offset_t GetCurrentFileSize() const; |
368 |
file_offset_t GetRequiredFileSize(); |
369 |
file_offset_t GetRequiredFileSize(offset_size_t fileOffsetSize); |
370 |
int GetFileOffsetSize() const; |
371 |
int GetRequiredFileOffsetSize(); |
372 |
|
373 |
virtual void Save(progress_t* pProgress = NULL); |
374 |
virtual void Save(const String& path, progress_t* pProgress = NULL); |
375 |
virtual ~File(); |
376 |
protected: |
377 |
#if POSIX |
378 |
int hFileRead; ///< handle / descriptor for reading from file |
379 |
int hFileWrite; ///< handle / descriptor for writing to (some) file |
380 |
#elif defined(WIN32) |
381 |
HANDLE hFileRead; ///< handle / descriptor for reading from file |
382 |
HANDLE hFileWrite; ///< handle / descriptor for writing to (some) file |
383 |
#else |
384 |
FILE* hFileRead; ///< handle / descriptor for reading from file |
385 |
FILE* hFileWrite; ///< handle / descriptor for writing to (some) file |
386 |
#endif // POSIX |
387 |
String Filename; |
388 |
bool bEndianNative; |
389 |
bool bIsNewFile; |
390 |
layout_t Layout; ///< An ordinary RIFF file is always set to layout_standard. |
391 |
offset_size_t FileOffsetPreference; |
392 |
int FileOffsetSize; ///< Size of file offsets (in bytes) when this file was opened (or saved the last time). |
393 |
|
394 |
friend class Chunk; |
395 |
friend class List; |
396 |
private: |
397 |
stream_mode_t Mode; |
398 |
|
399 |
void __openExistingFile(const String& path, uint32_t* FileType = NULL); |
400 |
void ResizeFile(file_offset_t ullNewSize); |
401 |
#if POSIX |
402 |
file_offset_t __GetFileSize(int hFile) const; |
403 |
#elif defined(WIN32) |
404 |
file_offset_t __GetFileSize(HANDLE hFile) const; |
405 |
#else |
406 |
file_offset_t __GetFileSize(FILE* hFile) const; |
407 |
#endif |
408 |
int FileOffsetSizeFor(file_offset_t fileSize) const; |
409 |
void Cleanup(); |
410 |
}; |
411 |
|
412 |
/** |
413 |
* Will be thrown whenever an error occurs while handling a RIFF file. |
414 |
*/ |
415 |
class Exception { |
416 |
public: |
417 |
String Message; |
418 |
|
419 |
Exception(String format, ...); |
420 |
Exception(String format, va_list arg); |
421 |
void PrintMessage(); |
422 |
virtual ~Exception() {} |
423 |
|
424 |
protected: |
425 |
Exception(); |
426 |
static String assemble(String format, va_list arg); |
427 |
}; |
428 |
|
429 |
String libraryName(); |
430 |
String libraryVersion(); |
431 |
|
432 |
} // namespace RIFF |
433 |
#endif // __RIFF_H__ |