34 #if defined _WIN32 && !defined __CYGWIN__
40 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
41 #include <sys/types.h>
45 #define __STDC_FORMAT_MACROS
49 #if defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__ || defined __EMX__
56 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
57 #if defined __BORLANDC__
60 #include <sys/utime.h>
63 #include <sys/types.h>
92 namespace FlacNamespace
94 #if JUCE_INCLUDE_FLAC_CODE || ! defined (JUCE_INCLUDE_FLAC_CODE)
97 #define VERSION "1.3.1"
99 #define FLAC__NO_DLL 1
102 #pragma warning (disable: 4267 4127 4244 4996 4100 4701 4702 4013 4133 4206 4312 4505 4365 4005 4334 181 111)
104 #define HAVE_LROUND 1
108 #define FLAC__SYS_DARWIN 1
112 #define SIZE_MAX 0xffffffff
116 #pragma clang diagnostic push
117 #pragma clang diagnostic ignored "-Wconversion"
118 #pragma clang diagnostic ignored "-Wshadow"
119 #pragma clang diagnostic ignored "-Wdeprecated-register"
120 #if __has_warning("-Wzero-as-null-pointer-constant")
121 #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
126 #pragma GCC diagnostic push
127 #pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
128 #pragma GCC diagnostic ignored "-Wconversion"
129 #pragma GCC diagnostic ignored "-Wsign-conversion"
134 #define FLAC__CPU_IA32 1
137 #define FLAC__CPU_X86_64 1
139 #define FLAC__HAS_X86INTRIN 1
142 #undef __STDC_LIMIT_MACROS
143 #define __STDC_LIMIT_MACROS 1
144 #define flac_max jmax
145 #define flac_min jmin
147 #include "flac/all.h"
148 #include "flac/libFLAC/bitmath.c"
149 #include "flac/libFLAC/bitreader.c"
150 #include "flac/libFLAC/bitwriter.c"
151 #include "flac/libFLAC/cpu.c"
152 #include "flac/libFLAC/crc.c"
153 #include "flac/libFLAC/fixed.c"
154 #include "flac/libFLAC/float.c"
155 #include "flac/libFLAC/format.c"
156 #include "flac/libFLAC/lpc_flac.c"
157 #include "flac/libFLAC/md5.c"
158 #include "flac/libFLAC/memory.c"
159 #include "flac/libFLAC/stream_decoder.c"
160 #include "flac/libFLAC/stream_encoder.c"
161 #include "flac/libFLAC/stream_encoder_framing.c"
162 #include "flac/libFLAC/window_flac.c"
165 #include <FLAC/all.h>
169 #pragma clang diagnostic pop
173 #pragma GCC diagnostic pop
181 static const char*
const flacFormatName =
"FLAC file";
185 class FlacReader :
public AudioFormatReader
188 FlacReader (InputStream* in) : AudioFormatReader (in, flacFormatName)
191 decoder = FlacNamespace::FLAC__stream_decoder_new();
193 ok = FLAC__stream_decoder_init_stream (decoder,
194 readCallback_, seekCallback_, tellCallback_, lengthCallback_,
195 eofCallback_, writeCallback_, metadataCallback_, errorCallback_,
196 this) == FlacNamespace::FLAC__STREAM_DECODER_INIT_STATUS_OK;
200 FLAC__stream_decoder_process_until_end_of_metadata (decoder);
202 if (lengthInSamples == 0 && sampleRate > 0)
206 scanningForLength =
true;
207 FLAC__stream_decoder_process_until_end_of_stream (decoder);
208 scanningForLength =
false;
209 auto tempLength = lengthInSamples;
211 FLAC__stream_decoder_reset (decoder);
212 FLAC__stream_decoder_process_until_end_of_metadata (decoder);
213 lengthInSamples = tempLength;
218 ~FlacReader()
override
220 FlacNamespace::FLAC__stream_decoder_delete (decoder);
223 void useMetadata (
const FlacNamespace::FLAC__StreamMetadata_StreamInfo& info)
225 sampleRate = info.sample_rate;
226 bitsPerSample = info.bits_per_sample;
227 lengthInSamples = (
unsigned int) info.total_samples;
228 numChannels = info.channels;
230 reservoir.setSize ((
int) numChannels, 2 * (int) info.max_blocksize,
false,
false,
true);
234 bool readSamples (
int** destSamples,
int numDestChannels,
int startOffsetInDestBuffer,
235 int64 startSampleInFile,
int numSamples)
override
240 while (numSamples > 0)
242 if (startSampleInFile >= reservoirStart
243 && startSampleInFile < reservoirStart + samplesInReservoir)
245 auto num = (int) jmin ((int64) numSamples,
246 reservoirStart + samplesInReservoir - startSampleInFile);
250 for (
int i = jmin (numDestChannels, reservoir.getNumChannels()); --i >= 0;)
251 if (destSamples[i] !=
nullptr)
252 memcpy (destSamples[i] + startOffsetInDestBuffer,
253 reservoir.getReadPointer (i, (
int) (startSampleInFile - reservoirStart)),
254 (
size_t) num * sizeof (
int));
256 startOffsetInDestBuffer += num;
257 startSampleInFile += num;
262 if (startSampleInFile >= lengthInSamples)
264 samplesInReservoir = 0;
266 else if (startSampleInFile < reservoirStart
267 || startSampleInFile > reservoirStart + jmax (samplesInReservoir, 511))
271 reservoirStart = (int) (startSampleInFile & ~511);
272 samplesInReservoir = 0;
273 FLAC__stream_decoder_seek_absolute (decoder, (FlacNamespace::FLAC__uint64) reservoirStart);
277 reservoirStart += samplesInReservoir;
278 samplesInReservoir = 0;
279 FLAC__stream_decoder_process_single (decoder);
282 if (samplesInReservoir == 0)
289 for (
int i = numDestChannels; --i >= 0;)
290 if (destSamples[i] !=
nullptr)
291 zeromem (destSamples[i] + startOffsetInDestBuffer, (
size_t) numSamples *
sizeof (
int));
297 void useSamples (
const FlacNamespace::FLAC__int32*
const buffer[],
int numSamples)
299 if (scanningForLength)
301 lengthInSamples += numSamples;
305 if (numSamples > reservoir.getNumSamples())
306 reservoir.setSize ((
int) numChannels, numSamples,
false,
false,
true);
308 auto bitsToShift = 32 - bitsPerSample;
310 for (
int i = 0; i < (int) numChannels; ++i)
312 auto* src = buffer[i];
315 while (src ==
nullptr && n > 0)
320 auto* dest =
reinterpret_cast<int*
> (reservoir.getWritePointer(i));
322 for (
int j = 0; j < numSamples; ++j)
323 dest[j] = src[j] << bitsToShift;
327 samplesInReservoir = numSamples;
332 static FlacNamespace::FLAC__StreamDecoderReadStatus readCallback_ (
const FlacNamespace::FLAC__StreamDecoder*, FlacNamespace::FLAC__byte buffer[],
size_t* bytes,
void* client_data)
334 *bytes = (size_t)
static_cast<const FlacReader*
> (client_data)->input->read (buffer, (
int) *bytes);
335 return FlacNamespace::FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
338 static FlacNamespace::FLAC__StreamDecoderSeekStatus seekCallback_ (
const FlacNamespace::FLAC__StreamDecoder*, FlacNamespace::FLAC__uint64 absolute_byte_offset,
void* client_data)
340 static_cast<const FlacReader*
> (client_data)->input->setPosition ((
int) absolute_byte_offset);
341 return FlacNamespace::FLAC__STREAM_DECODER_SEEK_STATUS_OK;
344 static FlacNamespace::FLAC__StreamDecoderTellStatus tellCallback_ (
const FlacNamespace::FLAC__StreamDecoder*, FlacNamespace::FLAC__uint64* absolute_byte_offset,
void* client_data)
346 *absolute_byte_offset = (uint64)
static_cast<const FlacReader*
> (client_data)->input->getPosition();
347 return FlacNamespace::FLAC__STREAM_DECODER_TELL_STATUS_OK;
350 static FlacNamespace::FLAC__StreamDecoderLengthStatus lengthCallback_ (
const FlacNamespace::FLAC__StreamDecoder*, FlacNamespace::FLAC__uint64* stream_length,
void* client_data)
352 *stream_length = (uint64)
static_cast<const FlacReader*
> (client_data)->input->getTotalLength();
353 return FlacNamespace::FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
356 static FlacNamespace::FLAC__bool eofCallback_ (
const FlacNamespace::FLAC__StreamDecoder*,
void* client_data)
358 return static_cast<const FlacReader*
> (client_data)->input->isExhausted();
361 static FlacNamespace::FLAC__StreamDecoderWriteStatus writeCallback_ (
const FlacNamespace::FLAC__StreamDecoder*,
362 const FlacNamespace::FLAC__Frame* frame,
363 const FlacNamespace::FLAC__int32*
const buffer[],
366 static_cast<FlacReader*
> (client_data)->useSamples (buffer, (
int) frame->header.blocksize);
367 return FlacNamespace::FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
370 static void metadataCallback_ (
const FlacNamespace::FLAC__StreamDecoder*,
371 const FlacNamespace::FLAC__StreamMetadata* metadata,
374 static_cast<FlacReader*
> (client_data)->useMetadata (metadata->data.stream_info);
377 static void errorCallback_ (
const FlacNamespace::FLAC__StreamDecoder*, FlacNamespace::FLAC__StreamDecoderErrorStatus,
void*)
382 FlacNamespace::FLAC__StreamDecoder* decoder;
383 AudioBuffer<float> reservoir;
384 int reservoirStart = 0, samplesInReservoir = 0;
385 bool ok =
false, scanningForLength =
false;
387 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FlacReader)
392 class FlacWriter :
public AudioFormatWriter
395 FlacWriter (OutputStream* out,
double rate, uint32 numChans, uint32 bits,
int qualityOptionIndex)
396 : AudioFormatWriter (out, flacFormatName, rate, numChans, bits),
397 streamStartPos (output != nullptr ? jmax (output->getPosition(), 0ll) : 0ll)
399 encoder = FlacNamespace::FLAC__stream_encoder_new();
401 if (qualityOptionIndex > 0)
402 FLAC__stream_encoder_set_compression_level (encoder, (uint32) jmin (8, qualityOptionIndex));
404 FLAC__stream_encoder_set_do_mid_side_stereo (encoder, numChannels == 2);
405 FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, numChannels == 2);
406 FLAC__stream_encoder_set_channels (encoder, numChannels);
407 FLAC__stream_encoder_set_bits_per_sample (encoder, jmin ((
unsigned int) 24, bitsPerSample));
408 FLAC__stream_encoder_set_sample_rate (encoder, (
unsigned int) sampleRate);
409 FLAC__stream_encoder_set_blocksize (encoder, 0);
410 FLAC__stream_encoder_set_do_escape_coding (encoder,
true);
412 ok = FLAC__stream_encoder_init_stream (encoder,
413 encodeWriteCallback, encodeSeekCallback,
414 encodeTellCallback, encodeMetadataCallback,
415 this) == FlacNamespace::FLAC__STREAM_ENCODER_INIT_STATUS_OK;
418 ~FlacWriter()
override
422 FlacNamespace::FLAC__stream_encoder_finish (encoder);
431 FlacNamespace::FLAC__stream_encoder_delete (encoder);
435 bool write (
const int** samplesToWrite,
int numSamples)
override
440 HeapBlock<int*> channels;
442 auto bitsToShift = 32 - (int) bitsPerSample;
446 temp.malloc (numChannels * (
size_t) numSamples);
447 channels.calloc (numChannels + 1);
449 for (
unsigned int i = 0; i < numChannels; ++i)
451 if (samplesToWrite[i] ==
nullptr)
454 auto* destData = temp.get() + i * (size_t) numSamples;
455 channels[i] = destData;
457 for (
int j = 0; j < numSamples; ++j)
458 destData[j] = (samplesToWrite[i][j] >> bitsToShift);
461 samplesToWrite =
const_cast<const int**
> (channels.get());
464 return FLAC__stream_encoder_process (encoder, (
const FlacNamespace::FLAC__int32**) samplesToWrite, (
unsigned) numSamples) != 0;
467 bool writeData (
const void*
const data,
const int size)
const
469 return output->write (data, (
size_t) size);
472 static void packUint32 (FlacNamespace::FLAC__uint32 val, FlacNamespace::FLAC__byte* b,
const int bytes)
476 for (
int i = 0; i < bytes; ++i)
478 *(--b) = (FlacNamespace::FLAC__byte) (val & 0xff);
483 void writeMetaData (
const FlacNamespace::FLAC__StreamMetadata* metadata)
485 using namespace FlacNamespace;
486 auto& info = metadata->data.stream_info;
488 unsigned char buffer[FLAC__STREAM_METADATA_STREAMINFO_LENGTH];
489 const unsigned int channelsMinus1 = info.channels - 1;
490 const unsigned int bitsMinus1 = info.bits_per_sample - 1;
492 packUint32 (info.min_blocksize, buffer, 2);
493 packUint32 (info.max_blocksize, buffer + 2, 2);
494 packUint32 (info.min_framesize, buffer + 4, 3);
495 packUint32 (info.max_framesize, buffer + 7, 3);
496 buffer[10] = (uint8) ((info.sample_rate >> 12) & 0xff);
497 buffer[11] = (uint8) ((info.sample_rate >> 4) & 0xff);
498 buffer[12] = (uint8) (((info.sample_rate & 0x0f) << 4) | (channelsMinus1 << 1) | (bitsMinus1 >> 4));
499 buffer[13] = (FLAC__byte) (((bitsMinus1 & 0x0f) << 4) | (
unsigned int) ((info.total_samples >> 32) & 0x0f));
500 packUint32 ((FLAC__uint32) info.total_samples, buffer + 14, 4);
501 memcpy (buffer + 18, info.md5sum, 16);
503 const bool seekOk = output->setPosition (streamStartPos + 4);
504 ignoreUnused (seekOk);
510 output->writeIntBigEndian (FLAC__STREAM_METADATA_STREAMINFO_LENGTH);
511 output->write (buffer, FLAC__STREAM_METADATA_STREAMINFO_LENGTH);
515 static FlacNamespace::FLAC__StreamEncoderWriteStatus encodeWriteCallback (
const FlacNamespace::FLAC__StreamEncoder*,
516 const FlacNamespace::FLAC__byte buffer[],
522 return static_cast<FlacWriter*
> (client_data)->writeData (buffer, (
int) bytes)
523 ? FlacNamespace::FLAC__STREAM_ENCODER_WRITE_STATUS_OK
524 : FlacNamespace::FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
527 static FlacNamespace::FLAC__StreamEncoderSeekStatus encodeSeekCallback (
const FlacNamespace::FLAC__StreamEncoder*, FlacNamespace::FLAC__uint64,
void*)
529 return FlacNamespace::FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED;
532 static FlacNamespace::FLAC__StreamEncoderTellStatus encodeTellCallback (
const FlacNamespace::FLAC__StreamEncoder*, FlacNamespace::FLAC__uint64* absolute_byte_offset,
void* client_data)
534 if (client_data ==
nullptr)
535 return FlacNamespace::FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED;
537 *absolute_byte_offset = (FlacNamespace::FLAC__uint64)
static_cast<FlacWriter*
> (client_data)->output->getPosition();
538 return FlacNamespace::FLAC__STREAM_ENCODER_TELL_STATUS_OK;
541 static void encodeMetadataCallback (
const FlacNamespace::FLAC__StreamEncoder*,
const FlacNamespace::FLAC__StreamMetadata* metadata,
void* client_data)
543 static_cast<FlacWriter*
> (client_data)->writeMetaData (metadata);
549 FlacNamespace::FLAC__StreamEncoder* encoder;
550 int64 streamStartPos;
552 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FlacWriter)
557 FlacAudioFormat::FlacAudioFormat() : AudioFormat (flacFormatName,
".flac") {}
558 FlacAudioFormat::~FlacAudioFormat() {}
560 Array<int> FlacAudioFormat::getPossibleSampleRates()
562 return { 8000, 11025, 12000, 16000, 22050, 32000, 44100, 48000,
563 88200, 96000, 176400, 192000, 352800, 384000 };
566 Array<int> FlacAudioFormat::getPossibleBitDepths()
571 bool FlacAudioFormat::canDoStereo() {
return true; }
572 bool FlacAudioFormat::canDoMono() {
return true; }
573 bool FlacAudioFormat::isCompressed() {
return true; }
575 AudioFormatReader* FlacAudioFormat::createReaderFor (InputStream* in,
const bool deleteStreamIfOpeningFails)
577 std::unique_ptr<FlacReader> r (
new FlacReader (in));
579 if (r->sampleRate > 0)
582 if (! deleteStreamIfOpeningFails)
588 AudioFormatWriter* FlacAudioFormat::createWriterFor (OutputStream* out,
590 unsigned int numberOfChannels,
592 const StringPairArray& ,
593 int qualityOptionIndex)
595 if (out !=
nullptr && getPossibleBitDepths().contains (bitsPerSample))
597 std::unique_ptr<FlacWriter> w (
new FlacWriter (out, sampleRate, numberOfChannels,
598 (uint32) bitsPerSample, qualityOptionIndex));
606 StringArray FlacAudioFormat::getQualityOptions()
608 return {
"0 (Fastest)",
"1",
"2",
"3",
"4",
"5 (Default)",
"6",
"7",
"8 (Highest quality)" };