Catalog · How the catalog works
libvpx-Delphi
Provides Delphi bindings for libvpx v1.14.1 the WebM Project VP8/VP9 codec implementation.
- ★ 12 on GitHub
Anyone may press Interesting, signed in or not. It helps others find this project.
README
libvpx-Delphi
Library for encoding 32 bits bitmap images using VP8 or VP9 codecs and decoding IVF files to 32 bits bitmap images. The main headers of libvpx by Google have been converted.
This works binding the libvpx and libyuv dynamic link library.
The necessary DLL files are made available in this repository.
Usage
- Add to your project the
codecfolder. - Add DLL files from the
binfolder in the same location as the executable. - Add to your main unit the
VPXEncoder.pasandVPXDecoder.pas
uses
VPXEncoder,VPXDecoder;Encoding
var
Encoder: TVpxEncoder;
EncodedStream: TMemoryStream;
Bitmap: TBitmap;
begin
Encoder := TVpxEncoder.Create(vctVP8); //vctVP9 for VP9
try
Bitmap := TBitmap.Create;
try
Bitmap.LoadFromFile('C:\temp\sample.bmp');
EncodedStream := Encoder.Encode(Bitmap);
try
EncodedStream.SaveToFile('C:\temp\output.ivf');
finally
EncodedStream.Free;
end;
finally
Bitmap.Free;
end;
finally
Encoder.Free;
end;Decoding
var
Decoder: TVpxDecoder;
InputStream: TMemoryStream;
OutputBitmap: TBitmap;
begin
Decoder := TVpxDecoder.Create;
try
InputStream := TMemoryStream.Create;
try
InputStream.LoadFromFile('C:\temp\output.ivf');
OutputBitmap := Decoder.Decode(InputStream);
if Assigned(OutputBitmap) then
begin
try
OutputBitmap.SaveToFile('C:\temp\output.bmp');
finally
OutputBitmap.Free;
end;
end;
finally
InputStream.Free;
end;
finally
Decoder.Free;
end;Demo
In the demo folder a GUI example to encode screen capture to IVF and decode the IVF to bitmap.
WebM documentation
https://www.webmproject.org/docs/
Contributing
Contributions are welcome! If you have suggestions or bug fixes, please fork the repository and submit a pull request.
Made with ❤️ using Delphi RAD Studio