Difference between revisions of "Component: WAV Library File (Audio Output)"
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''<span style="color:red;">No additional examples</span>'' | ''<span style="color:red;">No additional examples</span>'' | ||
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==Macro reference== | ==Macro reference== | ||
+ | ===EndOfFile=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''EndOfFile''' |
+ | |- | ||
+ | | colspan="2" | A simple check to see if we are at the end of the file. Returns 0 if we and not yet at the end fo the file. Returns 1 if we are at the end of the file. | ||
+ | |- | ||
|- | |- | ||
− | | | + | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-bool-icon.png]] - BOOL |
+ | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
+ | |} | ||
+ | |||
+ | |||
+ | ===GetBitsPerSample=== | ||
+ | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
+ | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
+ | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetBitsPerSample''' | ||
|- | |- | ||
− | | | + | | colspan="2" | Returns the number of bits per sample during playback. |
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE | ||
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+ | ===GetNextSample=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetNextSample''' |
|- | |- | ||
− | | colspan="2" | | + | | colspan="2" | Retreives the value for the next sample and auto increments the file pointer. Ideally this function should be called as part of a timer interrupt at the sample rate. The value returned should be passed onto a means of analogue output e.g. a DAC or PWM. |
|- | |- | ||
|- | |- | ||
− | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9- | + | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u16-icon.png]] - UINT |
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
+ | ===GetNumChannels=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetNumChannels''' |
|- | |- | ||
− | | colspan="2" | | + | | colspan="2" | Returns the number of audio channels stored in the WAV file during playback. |
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+ | ===ProcessBuffer=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''ProcessBuffer''' |
|- | |- | ||
− | | colspan="2" | | + | | colspan="2" | When Playing a WAV File - Fills the local data buffer from the SD card. When Recording a WAV File - Writes the local data buffer to the SD card. Must be called often enough to maintain playback or recording. Returns 0 for buffer OK 1 for buffer overrun |
|- | |- | ||
|- | |- | ||
− | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9- | + | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE |
| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
+ | ===PutNextSample=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
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+ | ===StartPlayback=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''StartPlayback''' |
+ | |- | ||
+ | | colspan="2" | Start playing a WAV file from the SD card. Use the GetNextSample and EndOfFile macros to read out the contents of the file. Use the ProcessBuffer macro to maintain the local buffer. Returns 1 if file found and opened, else returns 0. | ||
|- | |- | ||
− | |||
|- | |- | ||
+ | | width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING | ||
+ | | width="90%" | Filename | ||
+ | |- | ||
+ | | colspan="2" | WAV Filename e.g. "Test.wav" | ||
|- | |- | ||
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE | ||
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+ | ===StartRecording=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
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+ | ===StopRecording=== | ||
{| class="wikitable" style="width:60%; background-color:#FFFFFF;" | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | ||
|- | |- | ||
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
− | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | ''' | + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''StopRecording''' |
|- | |- | ||
− | | colspan="2" | | + | | colspan="2" | |
|- | |- | ||
|- | |- | ||
− | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9- | + | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID |
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| width="90%" style="border-top: 2px solid #000;" | ''Return'' | | width="90%" style="border-top: 2px solid #000;" | ''Return'' | ||
|} | |} | ||
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Latest revision as of 13:13, 7 February 2023
Author | Matrix TSL |
Version | 1.0 |
Category | Audio Output |
Contents
WAV Library File component
Allows WAV files to be played or recorded using a file component to provide the data. Complete with buffer to allow for uninterrupted playback when performing other tasks. Playback compatible with analogue outputs such as DAC or PWM. Recording compatible with analogue inputs such as a Microphone.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_WAV_Player_FAT.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_WAV_Player_FAT.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
EndOfFile
EndOfFile | |
A simple check to see if we are at the end of the file. Returns 0 if we and not yet at the end fo the file. Returns 1 if we are at the end of the file. | |
- BOOL | Return |
GetBitsPerSample
GetBitsPerSample | |
Returns the number of bits per sample during playback. | |
- BYTE | Return |
GetNextSample
GetNumChannels
GetNumChannels | |
Returns the number of audio channels stored in the WAV file during playback. | |
- BYTE | Return |
ProcessBuffer
PutNextSample
StartPlayback
StartRecording
StopRecording
StopRecording | |
- VOID | Return |