iqa does not take buffer formats into account
Submitted by LRN
How to reproduce:
- Take two video streams, put them through iqa.
- Observe the result.
- Put videoconvert elements and capsfilters before iqa sinkpads and convert one stream into I420, the other to, say, BGRA.
- Observe that the result is different now.
iqa refuses to compare streams with different formats
iqa internally (by itself or inside dssim library) converts streams into the same format as needed
iqa passes buffers from both streams to dssim, claiming that the streams have RGBA format, regardless of the actual stream format