arduino-audio-tools
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MP3 and AAC Decoder using libhelix: https://github.com/pschatzmann/arduino-libhelix. We dynamically create a MP3 or AAC decoder dependent on the provided audio format. More...
#include <CodecHelix.h>
Public Member Functions | |
DecoderHelix (Print &out_stream) | |
DecoderHelix (Print &out_stream, AudioInfoSupport &bi) | |
virtual void | addNotifyAudioChange (AudioInfoSupport &bi) |
Adds target to be notified about audio changes. | |
AudioInfo | audioInfo () override |
provides the actual input AudioInfo | |
virtual AudioInfo | audioInfoOut () |
provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream | |
bool | begin () |
Starts the processing. | |
virtual bool | begin (AudioInfo info) override |
virtual void | clearNotifyAudioChange () |
Deletes all change notify subscriptions. | |
void | end () |
Releases the reserved memory. | |
bool | isNotifyActive () |
Checks if the automatic AudioInfo update is active. | |
virtual bool | isResultPCM () |
Returns true to indicate that the decoding result is PCM data. | |
operator bool () | |
checks if the class is active | |
virtual bool | removeNotifyAudioChange (AudioInfoSupport &bi) |
Removes a target in order not to be notified about audio changes. | |
virtual void | setAudioInfo (AudioInfo from) override |
for most decoders this is not needed | |
void | setNotifyActive (bool flag) |
Deactivate/Reactivate automatic AudioInfo updates: (default is active) | |
virtual void | setOutput (AudioOutput &out_stream) |
Defines where the decoded result is written to. | |
virtual void | setOutput (AudioStream &out_stream) |
Defines where the decoded result is written to. | |
virtual void | setOutput (Print &outStream) |
Defines the output Stream. | |
size_t | write (const uint8_t *data, size_t len) |
Write mp3 data to decoder. | |
Public Attributes | |
int | id |
custom id to be used by application | |
Protected Member Functions | |
void | notifyAudioChange (AudioInfo info) |
void | resetDecoder () |
Deletes the decoder. | |
void | setupDecoder (const byte *start) |
Defines the decoder based on the audio format. | |
void | writeBlocking (Print *out, uint8_t *data, size_t len) |
Protected Attributes | |
AudioInfo | info |
bool | is_notify_active = true |
AudioInfo | noInfo |
Vector< AudioInfoSupport * > | notify_vector |
AudioInfoSupport * | p_bi = nullptr |
AudioDecoder * | p_decoder = nullptr |
Print * | p_out_stream = nullptr |
Print * | p_print = nullptr |
MP3 and AAC Decoder using libhelix: https://github.com/pschatzmann/arduino-libhelix. We dynamically create a MP3 or AAC decoder dependent on the provided audio format.
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inlinevirtualinherited |
Adds target to be notified about audio changes.
Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.
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inlineoverridevirtual |
provides the actual input AudioInfo
Reimplemented from AudioDecoder.
provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
Reimplemented in PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, and ResampleStream.
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inlinevirtual |
Starts the processing.
Reimplemented from AudioDecoder.
Reimplemented from AudioWriter.
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inlinevirtual |
Releases the reserved memory.
Reimplemented from AudioDecoder.
Returns true to indicate that the decoding result is PCM data.
Reimplemented in CopyDecoder, and GGWaveDecoder.
checks if the class is active
Implements AudioWriter.
for most decoders this is not needed
Implements AudioWriter.
Reimplemented in GGWaveDecoder, DecoderL8, OpusAudioDecoder, CodecNOP, AACDecoderHelix, and G7xxDecoder.
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inlinevirtualinherited |
Defines where the decoded result is written to.
Reimplemented in MetaDataFilterDecoder.
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inlinevirtualinherited |
Defines where the decoded result is written to.
Reimplemented in MetaDataFilterDecoder.
Defines the output Stream.
Reimplemented from AudioDecoder.
Write mp3 data to decoder.
Implements AudioWriter.