android h264 hardware encoding

[Sebastian Dröge]

On Mi, 2013-10-23 at 09:17 +0800, cee1 wrote:

> Hi slomo,
> What are differences among

They are not the same unfortunately, you will need to configure exactly
the value that is supported by the hardware. The values supported by the
hardware should be included in the MediaCodecList.

> COLOR_FormatYUV420SemiPlanar,
> COLOR_TI_FormatYUV420PackedSemiPlanar,
> COLOR_TI_FormatYUV420PackedSemiPlanarInterlaced,
> COLOR_QCOM_FormatYUV420SemiPlanar and

These are more or less the same and only differ in the way how cropping
is handled (well, and one is for interlaced video apparently).

> COLOR_QCOM_FormatYUV420PackedSemiPlanar64x32Tile2m8ka?

This one here is like NV12 but stored differently, in 64x32 tiles. Take
a look at the conversion code for this in gstamcviddec.c to understand
how it basically works, or check Google for tiled color formats.

> Will it be fine if I use a NV12 source for an encoder claimed support
> of COLOR_TI_FormatYUV420PackedSemiPlanar?

Yes, but you need to configure the encoder with the value it supports
and handle the data accordingly.

-- 
Sebastian Dröge <sebastian at centricular.com>
Centricular Ltd - http://www.centricular.com
Expertise, Straight from the Source
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