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README.md
SSTV Encoder 2
Image encoder for Slow-Scan Television (SSTV) audio signals
Modes
Supported SSTV modes:
- Martin Modes: Martin 1, Martin 2
- PD Modes: PD 50, PD 90, PD 120, PD 160, PD 180, PD 240, PD 290
- Robot Modes: Robot 36 Color, Robot 72 Color
- Scottie Modes: Scottie 1, Scottie 2, Scottie DX
- Wraase Modes: Wraase SC2 180
The mode specifications are taken from the Dayton Paper, JL Barber, "Proposal for SSTV Mode Specifications", 2000:
http://www.barberdsp.com/downloads/Dayton%20Paper.pdf
Image
To load an image:
- tap "Take Picture" or "Pick Picture" menu button, or
- use the Share option of an app like e.g. Gallery.
To keep the aspect ratio, black borders will be added if necessary.
Original image can be resend using another mode without reloading.
After image rotation or mode changing the image will be scaled to that mode's native size.
After closing the app the loaded image will not be stored.
Text Overlay
Actions for working with text overlays:
- Single tap to add a text overlay.
- Single tap on text overlay to edit it.
- Long press to move text overlay.
- Remove the text to remove a text overlay.
After closing the app all text overlays will be stored and reloaded when restarting.
Menu
Available menu options:
- "Play": Sends the image
- "Stop": Stops the current sending and empties the queue
- "Pick Picture": Opens an image viewer app to select a picture
- "Take Picture": Starts a camera app to take a picture
- "Save as WAVE File": Creates a wave file in the Music folder in SSTV Encoder album
- "Transform Image":
- "Rotate": Rotates the image by 90 degrees
- "Reset": Resets image rotation and scaling
- "Modes": Lists all supported modes
Installation
The working app "SSTV Encoder" can be installed
on Google Play:
https://play.google.com/store/apps/details?id=om.sstvencoder
or on F-Droid:
https://f-droid.org/packages/om.sstvencoder/
SSTV Image Decoder
Open Source Code:
https://github.com/xdsopl/robot36/tree/android
Installation
The working app "Robot36 - SSTV Image Decoder" can be installed
on Google Play:
https://play.google.com/store/apps/details?id=xdsopl.robot36
or on F-Droid:
https://f-droid.org/packages/xdsopl.robot36/