Processes That Could Be Accelerated
Even though XvMC currently only supports hardware acceleration of motion compensation (mo comp) and inverse discrete cosine transform (iDCT), (and Variable-Length Decoding for VIA Unichrome GPU), additional video decoding processes could be passed on to modern GPUs which could be accelerated via GPU fragment programs. XvMC could be extended in the future to support the same processes as the newer competing hardware video acceleration APIs like VDPAU, XvBA, and VAAPI:
- Motion compensation (mo comp)
- Inverse discrete cosine transform (iDCT)
- Inverse telecine 3:2 and 2:2 pull-down correction
- Inverse modified discrete cosine transform (iMDCT)
- In-loop deblocking filter
- Intra-frame prediction
- Inverse quantization (IQ)
- Variable-length decoding (VLD), more commonly known as slice-level acceleration
- Spatial-temporal deinterlacing and automatic interlace/progressive source detection
- Bitstream processing (CAVLC/CABAC)
Read more about this topic: X-Video Motion Compensation
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