Hi Hans, On Thu, 2016-09-08 at 09:21 +0200, Hans Verkuil wrote: > Hi Tiffany, > > On 09/07/2016 08:56 AM, Tiffany Lin wrote: > > This patch series add Mediatek compressed block format V4L2_PIX_FMT_MT21C, the > > decoder driver will decoded bitstream to V4L2_PIX_FMT_MT21C format. > > > > User space applications could use MT8173 MDP driver to convert V4L2_PIX_FMT_MT21C to > > V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M and V4L2_PIX_FMT_YVU420. > > > > MDP driver[1] is stand alone driver. > > > > Usage: > > MT21C -> MT8173 MDP -> NV12M/YUV420M/YVU420 > > NV12M/NV21M/YUV420M/YVU420M -> mt8173 Encoder -> H264/VP8 > > H264/VP8/VP9 -> mtk8173 Decoder -> MT21C > > > > When encode with MT21 source, the pipeline will be: > > MT21C -> MDP driver-> NV12M/NV21M/YUV420M/YVU420M -> Encoder -> H264/VP8 > > > > When playback, the pipeline will be: > > H264/VP8/VP9 -> Decoder driver -> MT21C -> MDP Driver -> DRM > > > > [1]https://patchwork.kernel.org/patch/9305329/ > > > > Tiffany Lin (4): > > v4l: add Mediatek compressed video block format > > docs-rst: Add compressed video formats used on MT8173 codec driver > > vcodec: mediatek: Add V4L2_PIX_FMT_MT21C support for v4l2 decoder > > arm64: dts: mediatek: Add Video Decoder for MT8173 > > > > Documentation/media/uapi/v4l/pixfmt-reserved.rst | 6 +++ > > arch/arm64/boot/dts/mediatek/mt8173.dtsi | 44 ++++++++++++++++++++ > > drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 7 +++- > > drivers/media/v4l2-core/v4l2-ioctl.c | 1 + > > include/uapi/linux/videodev2.h | 1 + > > 5 files changed, 58 insertions(+), 1 deletion(-) > > > > So basically the video decoder is useless without support for this format and > without the MDP driver, right? > Yes. It also require new vpu firmware. Andrew will help release new vpu firmware include encode/decode/mdp capability. best regards, Tiffany > I'm wondering if I should hold off on merging the decoder driver until these two > are in. What is the timeline for v6 of the MDP driver? > > If a v6 is posted early next week, then I have time to review and (assuming it is > OK) I can make a pull request for both this driver and the MDP driver. > > If it takes longer, then there is a good chance that it will slip to 4.10. I will > have very little time in the period September 20 - October 14. > > Regards, > > Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
