Class which filters out ID3v1 and ID3v2 Metadata and provides only the audio data to the decoder. More...
#include <MetaDataFilter.h>
Inheritance diagram for MetaDataFilter:
Classes | |
| struct | ID3v2 |
| ID3 verion 2 TAG Header (10 bytes) More... | |
| struct | Range |
| Metadata range. More... | |
Public Member Functions | |
| MetaDataFilter ()=default | |
| Default Constructor. | |
| MetaDataFilter (AudioWriter &out) | |
| Constructor which assigns the decoder. | |
| MetaDataFilter (Print &out) | |
| Constructor which assigns the decoder. | |
| virtual void | addNotifyAudioChange (AudioInfoSupport &bi) |
| Adds target to be notified about audio changes. | |
| virtual 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 | |
| virtual int | availableForWrite () override |
| bool | begin () override |
| (Re)starts the processing | |
| virtual bool | begin (AudioInfo info) |
| virtual void | clearNotifyAudioChange () |
| Deletes all change notify subscriptions. | |
| void | end () override |
| virtual void | flush () |
| virtual bool | isDeletable () |
| If true we need to release the related memory in the destructor. | |
| bool | isNotifyActive () |
| Checks if the automatic AudioInfo update is active. | |
| virtual | operator bool () |
| virtual bool | removeNotifyAudioChange (AudioInfoSupport &bi) |
| Removes a target in order not to be notified about audio changes. | |
| virtual void | setAudioInfo (AudioInfo newInfo) override |
| Defines the input AudioInfo. | |
| void | setNotifyActive (bool flag) |
| Deactivate/Reactivate automatic AudioInfo updates: (default is active) | |
| void | setOutput (AudioWriter &out) |
| Defines the decoder to which we write the data. | |
| void | setOutput (Print &out) |
| Defines the decoder to which we write the data. | |
| size_t | write (const uint8_t *data, size_t len) override |
| Writes the data to the decoder. | |
| virtual size_t | write (uint8_t ch) override |
| virtual void | writeSilence (size_t len) |
Protected Types | |
| enum | MetaType { TAG , TAG_PLUS , ID3 } |
Protected Member Functions | |
| uint32_t | calcSizeID3v2 (uint8_t chars[4]) |
| bool | find (const char *str, size_t len, int &pos, MetaType &type) |
| find the tag position in the string; | |
| bool | findTag (const uint8_t *data, size_t len, int &pos_tag, int &meta_len) |
| determines if the data conatins a ID3v1 or ID3v2 tag | |
| void | notifyAudioChange (AudioInfo info) |
Protected Attributes | |
| int | _timeout = 10 |
| AudioInfo | cfg |
| int | current_pos = 0 |
| bool | is_active = false |
| bool | is_notify_active = true |
| struct audio_tools::MetaDataFilter::Range | metadata_range |
| Vector< AudioInfoSupport * > | notify_vector |
| Print * | p_out = nullptr |
| AudioWriter * | p_writer = nullptr |
| int | start = 0 |
| struct audio_tools::MetaDataFilter::ID3v2 | tagv2 |
| SingleBuffer< uint8_t > | tmp {MAX_SINGLE_CHARS} |
| int | tmpPos = 0 |
Detailed Description
Class which filters out ID3v1 and ID3v2 Metadata and provides only the audio data to the decoder.
- Copyright
- GPLv3
Member Function Documentation
◆ writeSilence()
|
inlinevirtualinherited |
Writes n 0 values (= silence)
- Parameters
-
len
The documentation for this class was generated from the following file:
- src/AudioTools/CoreAudio/AudioMetaData/MetaDataFilter.h
