Reads and writes the lossless-compression FLAC audio format. More...
Inherits AudioFormat.
Public Member Functions | |
| FlacAudioFormat () | |
| ~FlacAudioFormat () | |
| const Array< int > | getPossibleSampleRates () |
| Returns a set of sample rates that the format can read and write. | |
| const Array< int > | getPossibleBitDepths () |
| Returns a set of bit depths that the format can read and write. | |
| bool | canDoStereo () |
| Returns true if the format can do 2-channel audio. | |
| bool | canDoMono () |
| Returns true if the format can do 1-channel audio. | |
| bool | isCompressed () |
| Returns true if the format uses compressed data. | |
| StringArray | getQualityOptions () |
| Returns a list of different qualities that can be used when writing. | |
| AudioFormatReader * | createReaderFor (InputStream *sourceStream, bool deleteStreamIfOpeningFails) |
| Tries to create an object that can read from a stream containing audio data in this format. | |
| AudioFormatWriter * | createWriterFor (OutputStream *streamToWriteTo, double sampleRateToUse, unsigned int numberOfChannels, int bitsPerSample, const StringPairArray &metadataValues, int qualityOptionIndex) |
| Tries to create an object that can write to a stream with this audio format. | |
Reads and writes the lossless-compression FLAC audio format.
To compile this, you'll need to set the JUCE_USE_FLAC flag in juce_Config.h, and make sure your include search path and library search path are set up to find the FLAC header files and static libraries.
| FlacAudioFormat::FlacAudioFormat | ( | ) |
| FlacAudioFormat::~FlacAudioFormat | ( | ) |
| const Array<int> FlacAudioFormat::getPossibleSampleRates | ( | ) | [virtual] |
Returns a set of sample rates that the format can read and write.
Implements AudioFormat.
| const Array<int> FlacAudioFormat::getPossibleBitDepths | ( | ) | [virtual] |
Returns a set of bit depths that the format can read and write.
Implements AudioFormat.
| bool FlacAudioFormat::canDoStereo | ( | ) | [virtual] |
Returns true if the format can do 2-channel audio.
Implements AudioFormat.
| bool FlacAudioFormat::canDoMono | ( | ) | [virtual] |
Returns true if the format can do 1-channel audio.
Implements AudioFormat.
| bool FlacAudioFormat::isCompressed | ( | ) | [virtual] |
Returns true if the format uses compressed data.
Reimplemented from AudioFormat.
| StringArray FlacAudioFormat::getQualityOptions | ( | ) | [virtual] |
Returns a list of different qualities that can be used when writing.
Non-compressed formats will just return an empty array, but for something like Ogg-Vorbis or MP3, it might return a list of bit-rates, etc.
When calling createWriterFor(), an index from this array is passed in to tell the format which option is required.
Reimplemented from AudioFormat.
| AudioFormatReader* FlacAudioFormat::createReaderFor | ( | InputStream * | sourceStream, |
| bool | deleteStreamIfOpeningFails | ||
| ) | [virtual] |
Tries to create an object that can read from a stream containing audio data in this format.
The reader object that is returned can be used to read from the stream, and should then be deleted by the caller.
| sourceStream | the stream to read from - the AudioFormatReader object that is returned will delete this stream when it no longer needs it. |
| deleteStreamIfOpeningFails | if no reader can be created, this determines whether this method should delete the stream object that was passed-in. (If a valid reader is returned, it will always be in charge of deleting the stream, so this parameter is ignored) |
Implements AudioFormat.
| AudioFormatWriter* FlacAudioFormat::createWriterFor | ( | OutputStream * | streamToWriteTo, |
| double | sampleRateToUse, | ||
| unsigned int | numberOfChannels, | ||
| int | bitsPerSample, | ||
| const StringPairArray & | metadataValues, | ||
| int | qualityOptionIndex | ||
| ) | [virtual] |
Tries to create an object that can write to a stream with this audio format.
The writer object that is returned can be used to write to the stream, and should then be deleted by the caller.
If the stream can't be created for some reason (e.g. the parameters passed in here aren't suitable), this will return 0.
| streamToWriteTo | the stream that the data will go to - this will be deleted by the AudioFormatWriter object when it's no longer needed. If no AudioFormatWriter can be created by this method, the stream will NOT be deleted, so that the caller can re-use it to try to open a different format, etc |
| sampleRateToUse | the sample rate for the file, which must be one of the ones returned by getPossibleSampleRates() |
| numberOfChannels | the number of channels - this must be either 1 or 2, and the choice will depend on the results of canDoMono() and canDoStereo() |
| bitsPerSample | the bits per sample to use - this must be one of the values returned by getPossibleBitDepths() |
| metadataValues | a set of metadata values that the writer should try to write to the stream. Exactly what these are depends on the format, and the subclass doesn't actually have to do anything with them if it doesn't want to. Have a look at the specific format implementation classes to see possible values that can be used |
| qualityOptionIndex | the index of one of compression qualities returned by the getQualityOptions() method. If there aren't any quality options for this format, just pass 0 in this parameter, as it'll be ignored |
Implements AudioFormat.
