1 /*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2020 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 By using JUCE, you agree to the terms of both the JUCE 6 End-User License
11 Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
12
13 End User License Agreement: www.juce.com/juce-6-licence
14 Privacy Policy: www.juce.com/juce-privacy-policy
15
16 Or: You may also use this code under the terms of the GPL v3 (see
17 www.gnu.org/licenses).
18
19 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
20 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
21 DISCLAIMED.
22
23 ==============================================================================
24 */
25
26 namespace juce
27 {
28
29 static const char* const aiffFormatName = "AIFF file";
30
31 //==============================================================================
32 const char* const AiffAudioFormat::appleOneShot = "apple one shot";
33 const char* const AiffAudioFormat::appleRootSet = "apple root set";
34 const char* const AiffAudioFormat::appleRootNote = "apple root note";
35 const char* const AiffAudioFormat::appleBeats = "apple beats";
36 const char* const AiffAudioFormat::appleDenominator = "apple denominator";
37 const char* const AiffAudioFormat::appleNumerator = "apple numerator";
38 const char* const AiffAudioFormat::appleTag = "apple tag";
39 const char* const AiffAudioFormat::appleKey = "apple key";
40
41 //==============================================================================
42 namespace AiffFileHelpers
43 {
chunkName(const char * name)44 inline int chunkName (const char* name) noexcept { return (int) ByteOrder::littleEndianInt (name); }
45
46 #if JUCE_MSVC
47 #pragma pack (push, 1)
48 #endif
49
50 //==============================================================================
51 struct InstChunk
52 {
53 struct Loop
54 {
55 uint16 type; // these are different in AIFF and WAV
56 uint16 startIdentifier;
57 uint16 endIdentifier;
58 } JUCE_PACKED;
59
60 int8 baseNote;
61 int8 detune;
62 int8 lowNote;
63 int8 highNote;
64 int8 lowVelocity;
65 int8 highVelocity;
66 int16 gain;
67 Loop sustainLoop;
68 Loop releaseLoop;
69
copyTojuce::AiffFileHelpers::InstChunk70 void copyTo (std::map<String, String>& values) const
71 {
72 values.emplace ("MidiUnityNote", String (baseNote));
73 values.emplace ("Detune", String (detune));
74
75 values.emplace ("LowNote", String (lowNote));
76 values.emplace ("HighNote", String (highNote));
77 values.emplace ("LowVelocity", String (lowVelocity));
78 values.emplace ("HighVelocity", String (highVelocity));
79
80 values.emplace ("Gain", String ((int16) ByteOrder::swapIfLittleEndian ((uint16) gain)));
81
82 values.emplace ("NumSampleLoops", String (2)); // always 2 with AIFF, WAV can have more
83 values.emplace ("Loop0Type", String (ByteOrder::swapIfLittleEndian (sustainLoop.type)));
84 values.emplace ("Loop0StartIdentifier", String (ByteOrder::swapIfLittleEndian (sustainLoop.startIdentifier)));
85 values.emplace ("Loop0EndIdentifier", String (ByteOrder::swapIfLittleEndian (sustainLoop.endIdentifier)));
86 values.emplace ("Loop1Type", String (ByteOrder::swapIfLittleEndian (releaseLoop.type)));
87 values.emplace ("Loop1StartIdentifier", String (ByteOrder::swapIfLittleEndian (releaseLoop.startIdentifier)));
88 values.emplace ("Loop1EndIdentifier", String (ByteOrder::swapIfLittleEndian (releaseLoop.endIdentifier)));
89 }
90
getValue16juce::AiffFileHelpers::InstChunk91 static uint16 getValue16 (const StringPairArray& values, const char* name, const char* def)
92 {
93 return ByteOrder::swapIfLittleEndian ((uint16) values.getValue (name, def).getIntValue());
94 }
95
getValue8juce::AiffFileHelpers::InstChunk96 static int8 getValue8 (const StringPairArray& values, const char* name, const char* def)
97 {
98 return (int8) values.getValue (name, def).getIntValue();
99 }
100
createjuce::AiffFileHelpers::InstChunk101 static void create (MemoryBlock& block, const StringPairArray& values)
102 {
103 if (values.getAllKeys().contains ("MidiUnityNote", true))
104 {
105 block.setSize ((sizeof (InstChunk) + 3) & ~(size_t) 3, true);
106 auto& inst = *static_cast<InstChunk*> (block.getData());
107
108 inst.baseNote = getValue8 (values, "MidiUnityNote", "60");
109 inst.detune = getValue8 (values, "Detune", "0");
110 inst.lowNote = getValue8 (values, "LowNote", "0");
111 inst.highNote = getValue8 (values, "HighNote", "127");
112 inst.lowVelocity = getValue8 (values, "LowVelocity", "1");
113 inst.highVelocity = getValue8 (values, "HighVelocity", "127");
114 inst.gain = (int16) getValue16 (values, "Gain", "0");
115
116 inst.sustainLoop.type = getValue16 (values, "Loop0Type", "0");
117 inst.sustainLoop.startIdentifier = getValue16 (values, "Loop0StartIdentifier", "0");
118 inst.sustainLoop.endIdentifier = getValue16 (values, "Loop0EndIdentifier", "0");
119 inst.releaseLoop.type = getValue16 (values, "Loop1Type", "0");
120 inst.releaseLoop.startIdentifier = getValue16 (values, "Loop1StartIdentifier", "0");
121 inst.releaseLoop.endIdentifier = getValue16 (values, "Loop1EndIdentifier", "0");
122 }
123 }
124
125 } JUCE_PACKED;
126
127 //==============================================================================
128 struct BASCChunk
129 {
130 enum Key
131 {
132 minor = 1,
133 major = 2,
134 neither = 3,
135 both = 4
136 };
137
BASCChunkjuce::AiffFileHelpers::BASCChunk138 BASCChunk (InputStream& input)
139 {
140 zerostruct (*this);
141
142 flags = (uint32) input.readIntBigEndian();
143 numBeats = (uint32) input.readIntBigEndian();
144 rootNote = (uint16) input.readShortBigEndian();
145 key = (uint16) input.readShortBigEndian();
146 timeSigNum = (uint16) input.readShortBigEndian();
147 timeSigDen = (uint16) input.readShortBigEndian();
148 oneShot = (uint16) input.readShortBigEndian();
149 input.read (unknown, sizeof (unknown));
150 }
151
addToMetadatajuce::AiffFileHelpers::BASCChunk152 void addToMetadata (std::map<String, String>& metadata) const
153 {
154 const bool rootNoteSet = rootNote != 0;
155
156 setBoolFlag (metadata, AiffAudioFormat::appleOneShot, oneShot == 2);
157 setBoolFlag (metadata, AiffAudioFormat::appleRootSet, rootNoteSet);
158
159 if (rootNoteSet)
160 metadata.emplace (AiffAudioFormat::appleRootNote, String (rootNote));
161
162 metadata.emplace (AiffAudioFormat::appleBeats, String (numBeats));
163 metadata.emplace (AiffAudioFormat::appleDenominator, String (timeSigDen));
164 metadata.emplace (AiffAudioFormat::appleNumerator, String (timeSigNum));
165
166 const char* keyString = nullptr;
167
168 switch (key)
169 {
170 case minor: keyString = "minor"; break;
171 case major: keyString = "major"; break;
172 case neither: keyString = "neither"; break;
173 case both: keyString = "both"; break;
174 default: break;
175 }
176
177 if (keyString != nullptr)
178 metadata.emplace (AiffAudioFormat::appleKey, keyString);
179 }
180
setBoolFlagjuce::AiffFileHelpers::BASCChunk181 void setBoolFlag (std::map<String, String>& values,
182 const char* name,
183 bool shouldBeSet) const
184 {
185 values.emplace (name, shouldBeSet ? "1" : "0");
186 }
187
188 uint32 flags;
189 uint32 numBeats;
190 uint16 rootNote;
191 uint16 key;
192 uint16 timeSigNum;
193 uint16 timeSigDen;
194 uint16 oneShot;
195 uint8 unknown[66];
196 } JUCE_PACKED;
197
198 #if JUCE_MSVC
199 #pragma pack (pop)
200 #endif
201
202 //==============================================================================
203 namespace CATEChunk
204 {
isValidTag(const char * d)205 static bool isValidTag (const char* d) noexcept
206 {
207 return CharacterFunctions::isLetterOrDigit (d[0]) && CharacterFunctions::isUpperCase (static_cast<juce_wchar> (d[0]))
208 && CharacterFunctions::isLetterOrDigit (d[1]) && CharacterFunctions::isLowerCase (static_cast<juce_wchar> (d[1]))
209 && CharacterFunctions::isLetterOrDigit (d[2]) && CharacterFunctions::isLowerCase (static_cast<juce_wchar> (d[2]));
210 }
211
isAppleGenre(const String & tag)212 static bool isAppleGenre (const String& tag) noexcept
213 {
214 static const char* appleGenres[] =
215 {
216 "Rock/Blues",
217 "Electronic/Dance",
218 "Jazz",
219 "Urban",
220 "World/Ethnic",
221 "Cinematic/New Age",
222 "Orchestral",
223 "Country/Folk",
224 "Experimental",
225 "Other Genre"
226 };
227
228 for (int i = 0; i < numElementsInArray (appleGenres); ++i)
229 if (tag == appleGenres[i])
230 return true;
231
232 return false;
233 }
234
read(InputStream & input,const uint32 length)235 static String read (InputStream& input, const uint32 length)
236 {
237 MemoryBlock mb;
238 input.skipNextBytes (4);
239 input.readIntoMemoryBlock (mb, (ssize_t) length - 4);
240
241 StringArray tagsArray;
242
243 auto* data = static_cast<const char*> (mb.getData());
244 auto* dataEnd = data + mb.getSize();
245
246 while (data < dataEnd)
247 {
248 bool isGenre = false;
249
250 if (isValidTag (data))
251 {
252 auto tag = String (CharPointer_UTF8 (data), CharPointer_UTF8 (dataEnd));
253 isGenre = isAppleGenre (tag);
254 tagsArray.add (tag);
255 }
256
257 data += isGenre ? 118 : 50;
258
259 if (data < dataEnd && data[0] == 0)
260 {
261 if (data + 52 < dataEnd && isValidTag (data + 50)) data += 50;
262 else if (data + 120 < dataEnd && isValidTag (data + 118)) data += 118;
263 else if (data + 170 < dataEnd && isValidTag (data + 168)) data += 168;
264 }
265 }
266
267 return tagsArray.joinIntoString (";");
268 }
269 }
270
271 //==============================================================================
272 namespace MarkChunk
273 {
metaDataContainsZeroIdentifiers(const StringPairArray & values)274 static bool metaDataContainsZeroIdentifiers (const StringPairArray& values)
275 {
276 // (zero cue identifiers are valid for WAV but not for AIFF)
277 const String cueString ("Cue");
278 const String noteString ("CueNote");
279 const String identifierString ("Identifier");
280
281 for (auto& key : values.getAllKeys())
282 {
283 if (key.startsWith (noteString))
284 continue; // zero identifier IS valid in a COMT chunk
285
286 if (key.startsWith (cueString) && key.contains (identifierString))
287 if (values.getValue (key, "-1").getIntValue() == 0)
288 return true;
289 }
290
291 return false;
292 }
293
create(MemoryBlock & block,const StringPairArray & values)294 static void create (MemoryBlock& block, const StringPairArray& values)
295 {
296 auto numCues = values.getValue ("NumCuePoints", "0").getIntValue();
297
298 if (numCues > 0)
299 {
300 MemoryOutputStream out (block, false);
301 out.writeShortBigEndian ((short) numCues);
302
303 auto numCueLabels = values.getValue ("NumCueLabels", "0").getIntValue();
304 auto idOffset = metaDataContainsZeroIdentifiers (values) ? 1 : 0; // can't have zero IDs in AIFF
305
306 #if JUCE_DEBUG
307 Array<int> identifiers;
308 #endif
309
310 for (int i = 0; i < numCues; ++i)
311 {
312 auto prefixCue = "Cue" + String (i);
313 auto identifier = idOffset + values.getValue (prefixCue + "Identifier", "1").getIntValue();
314
315 #if JUCE_DEBUG
316 jassert (! identifiers.contains (identifier));
317 identifiers.add (identifier);
318 #endif
319
320 auto offset = values.getValue (prefixCue + "Offset", "0").getIntValue();
321 auto label = "CueLabel" + String (i);
322
323 for (int labelIndex = 0; labelIndex < numCueLabels; ++labelIndex)
324 {
325 auto prefixLabel = "CueLabel" + String (labelIndex);
326 auto labelIdentifier = idOffset + values.getValue (prefixLabel + "Identifier", "1").getIntValue();
327
328 if (labelIdentifier == identifier)
329 {
330 label = values.getValue (prefixLabel + "Text", label);
331 break;
332 }
333 }
334
335 out.writeShortBigEndian ((short) identifier);
336 out.writeIntBigEndian (offset);
337
338 auto labelLength = jmin ((size_t) 254, label.getNumBytesAsUTF8()); // seems to need null terminator even though it's a pstring
339 out.writeByte (static_cast<char> (labelLength + 1));
340 out.write (label.toUTF8(), labelLength);
341 out.writeByte (0);
342
343 if ((out.getDataSize() & 1) != 0)
344 out.writeByte (0);
345 }
346 }
347 }
348 }
349
350 //==============================================================================
351 namespace COMTChunk
352 {
create(MemoryBlock & block,const StringPairArray & values)353 static void create (MemoryBlock& block, const StringPairArray& values)
354 {
355 auto numNotes = values.getValue ("NumCueNotes", "0").getIntValue();
356
357 if (numNotes > 0)
358 {
359 MemoryOutputStream out (block, false);
360 out.writeShortBigEndian ((short) numNotes);
361
362 for (int i = 0; i < numNotes; ++i)
363 {
364 auto prefix = "CueNote" + String (i);
365
366 out.writeIntBigEndian (values.getValue (prefix + "TimeStamp", "0").getIntValue());
367 out.writeShortBigEndian ((short) values.getValue (prefix + "Identifier", "0").getIntValue());
368
369 auto comment = values.getValue (prefix + "Text", String());
370 auto commentLength = jmin (comment.getNumBytesAsUTF8(), (size_t) 65534);
371
372 out.writeShortBigEndian (static_cast<short> (commentLength + 1));
373 out.write (comment.toUTF8(), commentLength);
374 out.writeByte (0);
375
376 if ((out.getDataSize() & 1) != 0)
377 out.writeByte (0);
378 }
379 }
380 }
381 }
382 }
383
384 //==============================================================================
385 class AiffAudioFormatReader : public AudioFormatReader
386 {
387 public:
AiffAudioFormatReader(InputStream * in)388 AiffAudioFormatReader (InputStream* in)
389 : AudioFormatReader (in, aiffFormatName)
390 {
391 using namespace AiffFileHelpers;
392
393 std::map<String, String> metadataValuesMap;
394
395 for (int i = 0; i != metadataValues.size(); ++i)
396 {
397 metadataValuesMap.emplace (metadataValues.getAllKeys().getReference (i),
398 metadataValues.getAllValues().getReference (i));
399 }
400
401 // If this fails, there were duplicate keys in the metadata
402 jassert ((size_t) metadataValuesMap.size() == (size_t) metadataValues.size());
403
404 if (input->readInt() == chunkName ("FORM"))
405 {
406 auto len = input->readIntBigEndian();
407 auto end = input->getPosition() + len;
408 auto nextType = input->readInt();
409
410 if (nextType == chunkName ("AIFF") || nextType == chunkName ("AIFC"))
411 {
412 bool hasGotVer = false;
413 bool hasGotData = false;
414 bool hasGotType = false;
415
416 while (input->getPosition() < end)
417 {
418 auto type = input->readInt();
419 auto length = (uint32) input->readIntBigEndian();
420 auto chunkEnd = input->getPosition() + length;
421
422 if (type == chunkName ("FVER"))
423 {
424 hasGotVer = true;
425 auto ver = input->readIntBigEndian();
426
427 if (ver != 0 && ver != (int) 0xa2805140)
428 break;
429 }
430 else if (type == chunkName ("COMM"))
431 {
432 hasGotType = true;
433
434 numChannels = (unsigned int) input->readShortBigEndian();
435 lengthInSamples = input->readIntBigEndian();
436 bitsPerSample = (unsigned int) input->readShortBigEndian();
437 bytesPerFrame = (int) ((numChannels * bitsPerSample) >> 3);
438
439 unsigned char sampleRateBytes[10];
440 input->read (sampleRateBytes, 10);
441 const int byte0 = sampleRateBytes[0];
442
443 if ((byte0 & 0x80) != 0
444 || byte0 <= 0x3F || byte0 > 0x40
445 || (byte0 == 0x40 && sampleRateBytes[1] > 0x1C))
446 break;
447
448 auto sampRate = ByteOrder::bigEndianInt (sampleRateBytes + 2);
449 sampRate >>= (16414 - ByteOrder::bigEndianShort (sampleRateBytes));
450 sampleRate = (int) sampRate;
451
452 if (length <= 18)
453 {
454 // some types don't have a chunk large enough to include a compression
455 // type, so assume it's just big-endian pcm
456 littleEndian = false;
457 }
458 else
459 {
460 auto compType = input->readInt();
461
462 if (compType == chunkName ("NONE") || compType == chunkName ("twos"))
463 {
464 littleEndian = false;
465 }
466 else if (compType == chunkName ("sowt"))
467 {
468 littleEndian = true;
469 }
470 else if (compType == chunkName ("fl32") || compType == chunkName ("FL32"))
471 {
472 littleEndian = false;
473 usesFloatingPointData = true;
474 }
475 else
476 {
477 sampleRate = 0;
478 break;
479 }
480 }
481 }
482 else if (type == chunkName ("SSND"))
483 {
484 hasGotData = true;
485
486 auto offset = input->readIntBigEndian();
487 dataChunkStart = input->getPosition() + 4 + offset;
488 lengthInSamples = (bytesPerFrame > 0) ? jmin (lengthInSamples, ((int64) length) / (int64) bytesPerFrame) : 0;
489 }
490 else if (type == chunkName ("MARK"))
491 {
492 auto numCues = (uint16) input->readShortBigEndian();
493
494 // these two are always the same for AIFF-read files
495 metadataValuesMap.emplace ("NumCuePoints", String (numCues));
496 metadataValuesMap.emplace ("NumCueLabels", String (numCues));
497
498 for (uint16 i = 0; i < numCues; ++i)
499 {
500 auto identifier = (uint16) input->readShortBigEndian();
501 auto offset = (uint32) input->readIntBigEndian();
502 auto stringLength = (uint8) input->readByte();
503 MemoryBlock textBlock;
504 input->readIntoMemoryBlock (textBlock, stringLength);
505
506 // if the stringLength is even then read one more byte as the
507 // string needs to be an even number of bytes INCLUDING the
508 // leading length character in the pascal string
509 if ((stringLength & 1) == 0)
510 input->readByte();
511
512 auto prefixCue = "Cue" + String (i);
513 metadataValuesMap.emplace (prefixCue + "Identifier", String (identifier));
514 metadataValuesMap.emplace (prefixCue + "Offset", String (offset));
515
516 auto prefixLabel = "CueLabel" + String (i);
517 metadataValuesMap.emplace (prefixLabel + "Identifier", String (identifier));
518 metadataValuesMap.emplace (prefixLabel + "Text", textBlock.toString());
519 }
520 }
521 else if (type == chunkName ("COMT"))
522 {
523 auto numNotes = (uint16) input->readShortBigEndian();
524 metadataValuesMap.emplace ("NumCueNotes", String (numNotes));
525
526 for (uint16 i = 0; i < numNotes; ++i)
527 {
528 auto timestamp = (uint32) input->readIntBigEndian();
529 auto identifier = (uint16) input->readShortBigEndian(); // may be zero in this case
530 auto stringLength = (uint16) input->readShortBigEndian();
531
532 MemoryBlock textBlock;
533 input->readIntoMemoryBlock (textBlock, stringLength + (stringLength & 1));
534
535 auto prefix = "CueNote" + String (i);
536 metadataValuesMap.emplace (prefix + "TimeStamp", String (timestamp));
537 metadataValuesMap.emplace (prefix + "Identifier", String (identifier));
538 metadataValuesMap.emplace (prefix + "Text", textBlock.toString());
539 }
540 }
541 else if (type == chunkName ("INST"))
542 {
543 HeapBlock<InstChunk> inst;
544 inst.calloc (jmax ((size_t) length + 1, sizeof (InstChunk)), 1);
545 input->read (inst, (int) length);
546 inst->copyTo (metadataValuesMap);
547 }
548 else if (type == chunkName ("basc"))
549 {
550 AiffFileHelpers::BASCChunk (*input).addToMetadata (metadataValuesMap);
551 }
552 else if (type == chunkName ("cate"))
553 {
554 metadataValuesMap.emplace (AiffAudioFormat::appleTag,
555 AiffFileHelpers::CATEChunk::read (*input, length));
556 }
557 else if ((hasGotVer && hasGotData && hasGotType)
558 || chunkEnd < input->getPosition()
559 || input->isExhausted())
560 {
561 break;
562 }
563
564 input->setPosition (chunkEnd + (chunkEnd & 1)); // (chunks should be aligned to an even byte address)
565 }
566 }
567 }
568
569 if (metadataValuesMap.size() > 0)
570 metadataValuesMap.emplace ("MetaDataSource", "AIFF");
571
572 metadataValues.addMap (metadataValuesMap);
573 }
574
575 //==============================================================================
readSamples(int ** destSamples,int numDestChannels,int startOffsetInDestBuffer,int64 startSampleInFile,int numSamples)576 bool readSamples (int** destSamples, int numDestChannels, int startOffsetInDestBuffer,
577 int64 startSampleInFile, int numSamples) override
578 {
579 clearSamplesBeyondAvailableLength (destSamples, numDestChannels, startOffsetInDestBuffer,
580 startSampleInFile, numSamples, lengthInSamples);
581
582 if (numSamples <= 0)
583 return true;
584
585 input->setPosition (dataChunkStart + startSampleInFile * bytesPerFrame);
586
587 while (numSamples > 0)
588 {
589 const int tempBufSize = 480 * 3 * 4; // (keep this a multiple of 3)
590 char tempBuffer [tempBufSize];
591
592 const int numThisTime = jmin (tempBufSize / bytesPerFrame, numSamples);
593 const int bytesRead = input->read (tempBuffer, numThisTime * bytesPerFrame);
594
595 if (bytesRead < numThisTime * bytesPerFrame)
596 {
597 jassert (bytesRead >= 0);
598 zeromem (tempBuffer + bytesRead, (size_t) (numThisTime * bytesPerFrame - bytesRead));
599 }
600
601 if (littleEndian)
602 copySampleData<AudioData::LittleEndian> (bitsPerSample, usesFloatingPointData,
603 destSamples, startOffsetInDestBuffer, numDestChannels,
604 tempBuffer, (int) numChannels, numThisTime);
605 else
606 copySampleData<AudioData::BigEndian> (bitsPerSample, usesFloatingPointData,
607 destSamples, startOffsetInDestBuffer, numDestChannels,
608 tempBuffer, (int) numChannels, numThisTime);
609
610 startOffsetInDestBuffer += numThisTime;
611 numSamples -= numThisTime;
612 }
613
614 return true;
615 }
616
617 template <typename Endianness>
copySampleData(unsigned int numBitsPerSample,bool floatingPointData,int * const * destSamples,int startOffsetInDestBuffer,int numDestChannels,const void * sourceData,int numberOfChannels,int numSamples)618 static void copySampleData (unsigned int numBitsPerSample, bool floatingPointData,
619 int* const* destSamples, int startOffsetInDestBuffer, int numDestChannels,
620 const void* sourceData, int numberOfChannels, int numSamples) noexcept
621 {
622 switch (numBitsPerSample)
623 {
624 case 8: ReadHelper<AudioData::Int32, AudioData::Int8, Endianness>::read (destSamples, startOffsetInDestBuffer, numDestChannels, sourceData, numberOfChannels, numSamples); break;
625 case 16: ReadHelper<AudioData::Int32, AudioData::Int16, Endianness>::read (destSamples, startOffsetInDestBuffer, numDestChannels, sourceData, numberOfChannels, numSamples); break;
626 case 24: ReadHelper<AudioData::Int32, AudioData::Int24, Endianness>::read (destSamples, startOffsetInDestBuffer, numDestChannels, sourceData, numberOfChannels, numSamples); break;
627 case 32: if (floatingPointData) ReadHelper<AudioData::Float32, AudioData::Float32, Endianness>::read (destSamples, startOffsetInDestBuffer, numDestChannels, sourceData, numberOfChannels, numSamples);
628 else ReadHelper<AudioData::Int32, AudioData::Int32, Endianness>::read (destSamples, startOffsetInDestBuffer, numDestChannels, sourceData, numberOfChannels, numSamples);
629 break;
630 default: jassertfalse; break;
631 }
632 }
633
634 int bytesPerFrame;
635 int64 dataChunkStart;
636 bool littleEndian;
637
638 private:
639 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AiffAudioFormatReader)
640 };
641
642 //==============================================================================
643 class AiffAudioFormatWriter : public AudioFormatWriter
644 {
645 public:
AiffAudioFormatWriter(OutputStream * out,double rate,unsigned int numChans,unsigned int bits,const StringPairArray & metadataValues)646 AiffAudioFormatWriter (OutputStream* out, double rate,
647 unsigned int numChans, unsigned int bits,
648 const StringPairArray& metadataValues)
649 : AudioFormatWriter (out, aiffFormatName, rate, numChans, bits)
650 {
651 using namespace AiffFileHelpers;
652
653 if (metadataValues.size() > 0)
654 {
655 // The meta data should have been sanitised for the AIFF format.
656 // If it was originally sourced from a WAV file the MetaDataSource
657 // key should be removed (or set to "AIFF") once this has been done
658 jassert (metadataValues.getValue ("MetaDataSource", "None") != "WAV");
659
660 MarkChunk::create (markChunk, metadataValues);
661 COMTChunk::create (comtChunk, metadataValues);
662 InstChunk::create (instChunk, metadataValues);
663 }
664
665 headerPosition = out->getPosition();
666 writeHeader();
667 }
668
~AiffAudioFormatWriter()669 ~AiffAudioFormatWriter() override
670 {
671 if ((bytesWritten & 1) != 0)
672 output->writeByte (0);
673
674 writeHeader();
675 }
676
677 //==============================================================================
write(const int ** data,int numSamples)678 bool write (const int** data, int numSamples) override
679 {
680 jassert (numSamples >= 0);
681 jassert (data != nullptr && *data != nullptr); // the input must contain at least one channel!
682
683 if (writeFailed)
684 return false;
685
686 auto bytes = numChannels * (size_t) numSamples * bitsPerSample / 8;
687 tempBlock.ensureSize (bytes, false);
688
689 switch (bitsPerSample)
690 {
691 case 8: WriteHelper<AudioData::Int8, AudioData::Int32, AudioData::BigEndian>::write (tempBlock.getData(), (int) numChannels, data, numSamples); break;
692 case 16: WriteHelper<AudioData::Int16, AudioData::Int32, AudioData::BigEndian>::write (tempBlock.getData(), (int) numChannels, data, numSamples); break;
693 case 24: WriteHelper<AudioData::Int24, AudioData::Int32, AudioData::BigEndian>::write (tempBlock.getData(), (int) numChannels, data, numSamples); break;
694 case 32: WriteHelper<AudioData::Int32, AudioData::Int32, AudioData::BigEndian>::write (tempBlock.getData(), (int) numChannels, data, numSamples); break;
695 default: jassertfalse; break;
696 }
697
698 if (bytesWritten + bytes >= (size_t) 0xfff00000
699 || ! output->write (tempBlock.getData(), bytes))
700 {
701 // failed to write to disk, so let's try writing the header.
702 // If it's just run out of disk space, then if it does manage
703 // to write the header, we'll still have a useable file..
704 writeHeader();
705 writeFailed = true;
706 return false;
707 }
708
709 bytesWritten += bytes;
710 lengthInSamples += (uint64) numSamples;
711 return true;
712 }
713
714 private:
715 MemoryBlock tempBlock, markChunk, comtChunk, instChunk;
716 uint64 lengthInSamples = 0, bytesWritten = 0;
717 int64 headerPosition = 0;
718 bool writeFailed = false;
719
writeHeader()720 void writeHeader()
721 {
722 using namespace AiffFileHelpers;
723
724 const bool couldSeekOk = output->setPosition (headerPosition);
725 ignoreUnused (couldSeekOk);
726
727 // if this fails, you've given it an output stream that can't seek! It needs
728 // to be able to seek back to write the header
729 jassert (couldSeekOk);
730
731 auto headerLen = (int) (54 + (markChunk.getSize() > 0 ? markChunk.getSize() + 8 : 0)
732 + (comtChunk.getSize() > 0 ? comtChunk.getSize() + 8 : 0)
733 + (instChunk.getSize() > 0 ? instChunk.getSize() + 8 : 0));
734 auto audioBytes = (int) (lengthInSamples * ((bitsPerSample * numChannels) / 8));
735 audioBytes += (audioBytes & 1);
736
737 output->writeInt (chunkName ("FORM"));
738 output->writeIntBigEndian (headerLen + audioBytes - 8);
739 output->writeInt (chunkName ("AIFF"));
740 output->writeInt (chunkName ("COMM"));
741 output->writeIntBigEndian (18);
742 output->writeShortBigEndian ((short) numChannels);
743 output->writeIntBigEndian ((int) lengthInSamples);
744 output->writeShortBigEndian ((short) bitsPerSample);
745
746 uint8 sampleRateBytes[10] = {};
747
748 if (sampleRate <= 1)
749 {
750 sampleRateBytes[0] = 0x3f;
751 sampleRateBytes[1] = 0xff;
752 sampleRateBytes[2] = 0x80;
753 }
754 else
755 {
756 int mask = 0x40000000;
757 sampleRateBytes[0] = 0x40;
758
759 if (sampleRate >= mask)
760 {
761 jassertfalse;
762 sampleRateBytes[1] = 0x1d;
763 }
764 else
765 {
766 int n = (int) sampleRate;
767 int i;
768
769 for (i = 0; i <= 32 ; ++i)
770 {
771 if ((n & mask) != 0)
772 break;
773
774 mask >>= 1;
775 }
776
777 n = n << (i + 1);
778
779 sampleRateBytes[1] = (uint8) (29 - i);
780 sampleRateBytes[2] = (uint8) ((n >> 24) & 0xff);
781 sampleRateBytes[3] = (uint8) ((n >> 16) & 0xff);
782 sampleRateBytes[4] = (uint8) ((n >> 8) & 0xff);
783 sampleRateBytes[5] = (uint8) (n & 0xff);
784 }
785 }
786
787 output->write (sampleRateBytes, 10);
788
789 if (markChunk.getSize() > 0)
790 {
791 output->writeInt (chunkName ("MARK"));
792 output->writeIntBigEndian ((int) markChunk.getSize());
793 *output << markChunk;
794 }
795
796 if (comtChunk.getSize() > 0)
797 {
798 output->writeInt (chunkName ("COMT"));
799 output->writeIntBigEndian ((int) comtChunk.getSize());
800 *output << comtChunk;
801 }
802
803 if (instChunk.getSize() > 0)
804 {
805 output->writeInt (chunkName ("INST"));
806 output->writeIntBigEndian ((int) instChunk.getSize());
807 *output << instChunk;
808 }
809
810 output->writeInt (chunkName ("SSND"));
811 output->writeIntBigEndian (audioBytes + 8);
812 output->writeInt (0);
813 output->writeInt (0);
814
815 jassert (output->getPosition() == headerLen);
816 }
817
818 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AiffAudioFormatWriter)
819 };
820
821 //==============================================================================
822 class MemoryMappedAiffReader : public MemoryMappedAudioFormatReader
823 {
824 public:
MemoryMappedAiffReader(const File & f,const AiffAudioFormatReader & reader)825 MemoryMappedAiffReader (const File& f, const AiffAudioFormatReader& reader)
826 : MemoryMappedAudioFormatReader (f, reader, reader.dataChunkStart,
827 reader.bytesPerFrame * reader.lengthInSamples, reader.bytesPerFrame),
828 littleEndian (reader.littleEndian)
829 {
830 }
831
readSamples(int ** destSamples,int numDestChannels,int startOffsetInDestBuffer,int64 startSampleInFile,int numSamples)832 bool readSamples (int** destSamples, int numDestChannels, int startOffsetInDestBuffer,
833 int64 startSampleInFile, int numSamples) override
834 {
835 clearSamplesBeyondAvailableLength (destSamples, numDestChannels, startOffsetInDestBuffer,
836 startSampleInFile, numSamples, lengthInSamples);
837
838 if (map == nullptr || ! mappedSection.contains (Range<int64> (startSampleInFile, startSampleInFile + numSamples)))
839 {
840 jassertfalse; // you must make sure that the window contains all the samples you're going to attempt to read.
841 return false;
842 }
843
844 if (littleEndian)
845 AiffAudioFormatReader::copySampleData<AudioData::LittleEndian>
846 (bitsPerSample, usesFloatingPointData, destSamples, startOffsetInDestBuffer,
847 numDestChannels, sampleToPointer (startSampleInFile), (int) numChannels, numSamples);
848 else
849 AiffAudioFormatReader::copySampleData<AudioData::BigEndian>
850 (bitsPerSample, usesFloatingPointData, destSamples, startOffsetInDestBuffer,
851 numDestChannels, sampleToPointer (startSampleInFile), (int) numChannels, numSamples);
852
853 return true;
854 }
855
getSample(int64 sample,float * result) const856 void getSample (int64 sample, float* result) const noexcept override
857 {
858 auto num = (int) numChannels;
859
860 if (map == nullptr || ! mappedSection.contains (sample))
861 {
862 jassertfalse; // you must make sure that the window contains all the samples you're going to attempt to read.
863
864 zeromem (result, (size_t) num * sizeof (float));
865 return;
866 }
867
868 float** dest = &result;
869 const void* source = sampleToPointer (sample);
870
871 if (littleEndian)
872 {
873 switch (bitsPerSample)
874 {
875 case 8: ReadHelper<AudioData::Float32, AudioData::UInt8, AudioData::LittleEndian>::read (dest, 0, 1, source, 1, num); break;
876 case 16: ReadHelper<AudioData::Float32, AudioData::Int16, AudioData::LittleEndian>::read (dest, 0, 1, source, 1, num); break;
877 case 24: ReadHelper<AudioData::Float32, AudioData::Int24, AudioData::LittleEndian>::read (dest, 0, 1, source, 1, num); break;
878 case 32: if (usesFloatingPointData) ReadHelper<AudioData::Float32, AudioData::Float32, AudioData::LittleEndian>::read (dest, 0, 1, source, 1, num);
879 else ReadHelper<AudioData::Float32, AudioData::Int32, AudioData::LittleEndian>::read (dest, 0, 1, source, 1, num);
880 break;
881 default: jassertfalse; break;
882 }
883 }
884 else
885 {
886 switch (bitsPerSample)
887 {
888 case 8: ReadHelper<AudioData::Float32, AudioData::UInt8, AudioData::BigEndian>::read (dest, 0, 1, source, 1, num); break;
889 case 16: ReadHelper<AudioData::Float32, AudioData::Int16, AudioData::BigEndian>::read (dest, 0, 1, source, 1, num); break;
890 case 24: ReadHelper<AudioData::Float32, AudioData::Int24, AudioData::BigEndian>::read (dest, 0, 1, source, 1, num); break;
891 case 32: if (usesFloatingPointData) ReadHelper<AudioData::Float32, AudioData::Float32, AudioData::BigEndian>::read (dest, 0, 1, source, 1, num);
892 else ReadHelper<AudioData::Float32, AudioData::Int32, AudioData::BigEndian>::read (dest, 0, 1, source, 1, num);
893 break;
894 default: jassertfalse; break;
895 }
896 }
897 }
898
readMaxLevels(int64 startSampleInFile,int64 numSamples,Range<float> * results,int numChannelsToRead)899 void readMaxLevels (int64 startSampleInFile, int64 numSamples, Range<float>* results, int numChannelsToRead) override
900 {
901 numSamples = jmin (numSamples, lengthInSamples - startSampleInFile);
902
903 if (map == nullptr || numSamples <= 0 || ! mappedSection.contains (Range<int64> (startSampleInFile, startSampleInFile + numSamples)))
904 {
905 jassert (numSamples <= 0); // you must make sure that the window contains all the samples you're going to attempt to read.
906
907 for (int i = 0; i < numChannelsToRead; ++i)
908 results[i] = Range<float>();
909
910 return;
911 }
912
913 switch (bitsPerSample)
914 {
915 case 8: scanMinAndMax<AudioData::UInt8> (startSampleInFile, numSamples, results, numChannelsToRead); break;
916 case 16: scanMinAndMax<AudioData::Int16> (startSampleInFile, numSamples, results, numChannelsToRead); break;
917 case 24: scanMinAndMax<AudioData::Int24> (startSampleInFile, numSamples, results, numChannelsToRead); break;
918 case 32: if (usesFloatingPointData) scanMinAndMax<AudioData::Float32> (startSampleInFile, numSamples, results, numChannelsToRead);
919 else scanMinAndMax<AudioData::Int32> (startSampleInFile, numSamples, results, numChannelsToRead);
920 break;
921 default: jassertfalse; break;
922 }
923 }
924
925 using AudioFormatReader::readMaxLevels;
926
927 private:
928 const bool littleEndian;
929
930 template <typename SampleType>
scanMinAndMax(int64 startSampleInFile,int64 numSamples,Range<float> * results,int numChannelsToRead) const931 void scanMinAndMax (int64 startSampleInFile, int64 numSamples, Range<float>* results, int numChannelsToRead) const noexcept
932 {
933 for (int i = 0; i < numChannelsToRead; ++i)
934 results[i] = scanMinAndMaxForChannel<SampleType> (i, startSampleInFile, numSamples);
935 }
936
937 template <typename SampleType>
scanMinAndMaxForChannel(int channel,int64 startSampleInFile,int64 numSamples) const938 Range<float> scanMinAndMaxForChannel (int channel, int64 startSampleInFile, int64 numSamples) const noexcept
939 {
940 return littleEndian ? scanMinAndMaxInterleaved<SampleType, AudioData::LittleEndian> (channel, startSampleInFile, numSamples)
941 : scanMinAndMaxInterleaved<SampleType, AudioData::BigEndian> (channel, startSampleInFile, numSamples);
942 }
943
944 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MemoryMappedAiffReader)
945 };
946
947 //==============================================================================
AiffAudioFormat()948 AiffAudioFormat::AiffAudioFormat() : AudioFormat (aiffFormatName, ".aiff .aif") {}
~AiffAudioFormat()949 AiffAudioFormat::~AiffAudioFormat() {}
950
getPossibleSampleRates()951 Array<int> AiffAudioFormat::getPossibleSampleRates()
952 {
953 return { 22050, 32000, 44100, 48000, 88200, 96000, 176400, 192000 };
954 }
955
getPossibleBitDepths()956 Array<int> AiffAudioFormat::getPossibleBitDepths()
957 {
958 return { 8, 16, 24 };
959 }
960
canDoStereo()961 bool AiffAudioFormat::canDoStereo() { return true; }
canDoMono()962 bool AiffAudioFormat::canDoMono() { return true; }
963
964 #if JUCE_MAC
canHandleFile(const File & f)965 bool AiffAudioFormat::canHandleFile (const File& f)
966 {
967 if (AudioFormat::canHandleFile (f))
968 return true;
969
970 auto type = f.getMacOSType();
971
972 // (NB: written as hex to avoid four-char-constant warnings)
973 return type == 0x41494646 /* AIFF */ || type == 0x41494643 /* AIFC */
974 || type == 0x61696666 /* aiff */ || type == 0x61696663 /* aifc */;
975 }
976 #endif
977
createReaderFor(InputStream * sourceStream,bool deleteStreamIfOpeningFails)978 AudioFormatReader* AiffAudioFormat::createReaderFor (InputStream* sourceStream, bool deleteStreamIfOpeningFails)
979 {
980 std::unique_ptr<AiffAudioFormatReader> w (new AiffAudioFormatReader (sourceStream));
981
982 if (w->sampleRate > 0 && w->numChannels > 0)
983 return w.release();
984
985 if (! deleteStreamIfOpeningFails)
986 w->input = nullptr;
987
988 return nullptr;
989 }
990
createMemoryMappedReader(const File & file)991 MemoryMappedAudioFormatReader* AiffAudioFormat::createMemoryMappedReader (const File& file)
992 {
993 return createMemoryMappedReader (file.createInputStream().release());
994 }
995
createMemoryMappedReader(FileInputStream * fin)996 MemoryMappedAudioFormatReader* AiffAudioFormat::createMemoryMappedReader (FileInputStream* fin)
997 {
998 if (fin != nullptr)
999 {
1000 AiffAudioFormatReader reader (fin);
1001
1002 if (reader.lengthInSamples > 0)
1003 return new MemoryMappedAiffReader (fin->getFile(), reader);
1004 }
1005
1006 return nullptr;
1007 }
1008
createWriterFor(OutputStream * out,double sampleRate,unsigned int numberOfChannels,int bitsPerSample,const StringPairArray & metadataValues,int)1009 AudioFormatWriter* AiffAudioFormat::createWriterFor (OutputStream* out,
1010 double sampleRate,
1011 unsigned int numberOfChannels,
1012 int bitsPerSample,
1013 const StringPairArray& metadataValues,
1014 int /*qualityOptionIndex*/)
1015 {
1016 if (out != nullptr && getPossibleBitDepths().contains (bitsPerSample))
1017 return new AiffAudioFormatWriter (out, sampleRate, numberOfChannels,
1018 (unsigned int) bitsPerSample, metadataValues);
1019
1020 return nullptr;
1021 }
1022
1023 } // namespace juce
1024