On 06/11/2018 08:59, Maxime Jourdan wrote: > Hi everyone, > > This patch series adds support for the Amlogic video decoder, > as well as the corresponding dt bindings for GXBB/GXL/GXM chips. > > It features decoding for the following formats: > - MPEG 1 > - MPEG 2 > > The following formats will be added in future patches: > - MJPEG > - MPEG 4 (incl. Xvid, H.263) > - H.264 > - HEVC (incl. 10-bit) > > The following formats' development has still not started, but they are > supported by the hardware: > - VC1 > - VP9 > > The code was made in such a way to allow easy inclusion of those formats > in the future. > > The decoder is single instance. > > Files: > - vdec.c handles the V4L2 M2M logic > - esparser.c manages the hardware bitstream parser > - vdec_helpers.c provides helpers to DONE the dst buffers as well as > various common code used by the codecs > - vdec_1.c manages the VDEC_1 block of the vdec IP > - codec_mpeg12.c enables decoding for MPEG 1/2. > - vdec_platform.c links codec units with vdec units > (e.g vdec_1 with codec_mpeg12) and lists all the available > src/dst formats and requirements (max width/height, etc.), > per compatible chip. > > Firmwares are necessary to run the vdec. They can currently be found at: > https://github.com/chewitt/meson-firmware > There is an ongoing effort to bring those firmwares to linux-firmware > but they're not in yet, currently blocked by licensing issues. > > It was tested primarily with ffmpeg's v4l2-m2m implementation. For instance: > $ ffmpeg -c:v mpeg2_v4l2m2m -i sample_mpeg2.mkv -f null - Testing on Linux 4.20-rc1 with the proper DT patches using : - gstreamer 1.10.4 V4L2 Video Decoder support from gst-plugins-good - v4l2-compliance Tested-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> > > The v4l2-compliance results are available below the patch diff. > [...]
