A simple WAVDecoder: We parse the header data on the first record to determine the format. If no AudioDecoderExt is specified we just write the PCM data to the output that is defined by calling setOutput(). You can define a ADPCM decoder to decode WAV files that contain ADPCM data. Please note that you need to call begin() everytime you process a new file to let the decoder know that we start with a new header. More...
#include <CodecWAV.h>
Public Member Functions | |
| WAVDecoder ()=default | |
| Construct a new WAVDecoder object for PCM data. | |
| WAVDecoder (AudioDecoderExt &dec, AudioFormat fmt) | |
| Construct a new WAVDecoder object for ADPCM data. | |
| virtual void | addNotifyAudioChange (AudioInfoSupport &bi) |
| Adds target to be notified about audio changes. | |
| AudioInfo | audioInfo () override |
| provides the actual input AudioInfo | |
| WAVAudioInfo & | audioInfoEx () |
| virtual AudioInfo | audioInfoOut () |
| provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream | |
| bool | begin () override |
| virtual bool | begin (AudioInfo info) override |
| virtual void | clearNotifyAudioChange () |
| Deletes all change notify subscriptions. | |
| void | end () override |
| bool | isNotifyActive () |
| Checks if the automatic AudioInfo update is active. | |
| virtual bool | isResultPCM () |
| Returns true to indicate that the decoding result is PCM data. | |
| const char * | mime () |
| virtual | operator bool () override |
| 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 | setDecoder (AudioDecoderExt &dec, AudioFormat fmt) |
| Defines an optional decoder if the format is not PCM. | |
| 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. | |
| void | setOutput (Print &out_stream) override |
| Defines the output Stream. | |
| virtual size_t | write (const uint8_t *data, size_t len) override |
Public Attributes | |
| int | id |
| custom id to be used by application | |
Protected Member Functions | |
| int | decodeHeader (uint8_t *in_ptr, size_t in_size) |
| Decodes the header data: Returns the start pos of the data. | |
| int32_t | interpret24bitAsInt32 (uint8_t *byteArray) |
| void | notifyAudioChange (AudioInfo info) |
| Print & | out () |
| void | setupEncodedAudio () |
| virtual size_t | write_out (const uint8_t *in_ptr, size_t in_size) |
| size_t | write_out_24 (const uint8_t *in_ptr, size_t in_size) |
| void | writeBlocking (Print *out, uint8_t *data, size_t len) |
Protected Attributes | |
| bool | active = false |
| SingleBuffer< uint8_t > | buffer24 |
| EncodedAudioOutput | dec_out |
| AudioFormat | decoder_format = AudioFormat::PCM |
| WAVHeader | header |
| AudioInfo | info |
| bool | is_notify_active = true |
| bool | isFirst = true |
| bool | isValid = true |
| Vector< AudioInfoSupport * > | notify_vector |
| AudioDecoderExt * | p_decoder = nullptr |
| Print * | p_print = nullptr |
Detailed Description
A simple WAVDecoder: We parse the header data on the first record to determine the format. If no AudioDecoderExt is specified we just write the PCM data to the output that is defined by calling setOutput(). You can define a ADPCM decoder to decode WAV files that contain ADPCM data. Please note that you need to call begin() everytime you process a new file to let the decoder know that we start with a new header.
- Copyright
- GPLv3
The documentation for this class was generated from the following file:
- src/AudioTools/AudioCodecs/CodecWAV.h
