It would be useful to be able to consume frames from Macadam's Decklink Capture direct into HTML5 canvas. Canvas only supports RGBA frames, but Decklink can provide BGRA, ARGB, YUV chroma-subsample and 10-bit HDR forms of those.
I propose an additional option outputRGBA that will convert Decklink frames of any color space into RGBA when using the Capture functionality. For RGB-based formats we can do basic byte swap for a rough initial implementation, and for YUV we can use Decklink's built-in IDeckLinkVideoConversion to convert from the source YUV to BGRA, then perform the byte-swap. I don't have a plan on how to maintain the HDR in these conversions- suggestions welcome.
Ideally (eventually) the byte swap could be accelerated with SIMD I think.
It would be useful to be able to consume frames from Macadam's Decklink Capture direct into HTML5 canvas. Canvas only supports RGBA frames, but Decklink can provide BGRA, ARGB, YUV chroma-subsample and 10-bit HDR forms of those.
I propose an additional option
outputRGBAthat will convert Decklink frames of any color space into RGBA when using the Capture functionality. For RGB-based formats we can do basic byte swap for a rough initial implementation, and for YUV we can use Decklink's built-in IDeckLinkVideoConversion to convert from the source YUV to BGRA, then perform the byte-swap. I don't have a plan on how to maintain the HDR in these conversions- suggestions welcome.Ideally (eventually) the byte swap could be accelerated with SIMD I think.
Work in progress is at https://github.com/rezonant/macadam/commits/feat/color-conversion