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SubjectRe: [PATCH v3 5/5] media: meson: vdec: add VP9 decoder support
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Le jeudi 06 février 2020 à 09:08 +0100, Neil Armstrong a écrit :
> On 03/02/2020 04:11, Nicolas Dufresne wrote:
> > Hi Neil,
> >
> > Le jeudi 16 janvier 2020 à 14:34 +0100, Neil Armstrong a écrit :
> > > From: Maxime Jourdan <mjourdan@baylibre.com>
> > >
> > > This adds VP9 decoding for the Amlogic GXL, G12A & SM1 SoCs, using
> > > the commong "HEVC" HW decoder.
> > >
> > > For G12A & SM1, it uses the IOMMU support from the firmware.
> > >
> > > For 10bit decoding, the firmware can only decode in the proprietary
> > > Amlogic Framebuffer Compression format, but can output in 8bit NV12
> > > buffer while writing the decoded frame.
> > >
> > > Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
> > > Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> > > ---
> > > drivers/staging/media/meson/vdec/Makefile | 2 +-
> > > drivers/staging/media/meson/vdec/codec_vp9.c | 2139 +++++++++++++++++
> > > drivers/staging/media/meson/vdec/codec_vp9.h | 13 +
> > > drivers/staging/media/meson/vdec/hevc_regs.h | 7 +
> > > drivers/staging/media/meson/vdec/vdec.c | 5 +
> > > .../staging/media/meson/vdec/vdec_helpers.c | 4 +
> > > .../staging/media/meson/vdec/vdec_platform.c | 38 +
> > > 7 files changed, 2207 insertions(+), 1 deletion(-)
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_vp9.c
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_vp9.h
> > >
>
> [...]
>
> > > diff --git a/drivers/staging/media/meson/vdec/vdec_platform.c b/drivers/staging/media/meson/vdec/vdec_platform.c
> > > index e9356a46828f..72a833b1cebd 100644
> > > --- a/drivers/staging/media/meson/vdec/vdec_platform.c
> > > +++ b/drivers/staging/media/meson/vdec/vdec_platform.c
> > > @@ -8,8 +8,10 @@
> > > #include "vdec.h"
> > >
> > > #include "vdec_1.h"
> > > +#include "vdec_hevc.h"
> > > #include "codec_mpeg12.h"
> > > #include "codec_h264.h"
> > > +#include "codec_vp9.h"
> > >
> > > static const struct amvdec_format vdec_formats_gxbb[] = {
> > > {
> > > @@ -51,6 +53,18 @@ static const struct amvdec_format vdec_formats_gxbb[] = {
> > >
> > > static const struct amvdec_format vdec_formats_gxl[] = {
> > > {
> > > + .pixfmt = V4L2_PIX_FMT_VP9,
> > > + .min_buffers = 16,
> > > + .max_buffers = 24,
> > > + .max_width = 3840,
> > > + .max_height = 2160,
> > > + .vdec_ops = &vdec_hevc_ops,
> > > + .codec_ops = &codec_vp9_ops,
> > > + .firmware_path = "meson/vdec/gxl_vp9.bin",
> >
> > Is there a pull request pending for this firmware ? I could not test as
> > this firmware was missing. Note that it could be nice to remove the
> > format from the enumeration in that case, as it's very confusing
> > initially.
>
> It has been merged yesterday, sorry for the delay.
>
> With maxime's patch, we tested it using ffmpeg master, mpv master with drm-prime
> rendering. We have a buildroot repo with the changed needed :
>
> https://gitlab.com/baylibre/amlogic/atv/buildroot-yukawa
>
> I will respin a v4 with the small fix from maxime.

Ok, I see it now. I've given a try, the output was corrupted with this
file from Android CTS + GStreamer 1.16.1 (Fedora 31 build).

Profile_0_8bit/buf/crowd_run_1080X512_fr30_bd8_8buf_l3.webm

Looking forward Maxime's patches. Just like the H264 case, seeking with
kmssink lead to stalls, but this time, the kernel give only one
message:

[498230.951737] meson-vdec c8820000.video-codec: No dst buffer available

And now I remember a comment, I guess it was Maxime about increasing
the some number of buffers from 2 to 3. So I'll try and find time to
get V4 and test again. Quite some improvement over my last series of
test with GStreamer. It has this particularity of running input/output
and capture QBUF on potentially 3 different threads.

>
> Neil
>
>
> > > + .pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
> > > + .flags = V4L2_FMT_FLAG_COMPRESSED |
> > > + V4L2_FMT_FLAG_DYN_RESOLUTION,
> > > + }, {
> > > .pixfmt = V4L2_PIX_FMT_H264,
> > > .min_buffers = 2,
> > > .max_buffers = 24,
> > > @@ -127,6 +141,18 @@ static const struct amvdec_format vdec_formats_gxm[] = {
> > >
> > > static const struct amvdec_format vdec_formats_g12a[] = {
> > > {
> > > + .pixfmt = V4L2_PIX_FMT_VP9,
> > > + .min_buffers = 16,
> > > + .max_buffers = 24,
> > > + .max_width = 3840,
> > > + .max_height = 2160,
> > > + .vdec_ops = &vdec_hevc_ops,
> > > + .codec_ops = &codec_vp9_ops,
> > > + .firmware_path = "meson/vdec/g12a_vp9.bin",
> > > + .pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
> > > + .flags = V4L2_FMT_FLAG_COMPRESSED |
> > > + V4L2_FMT_FLAG_DYN_RESOLUTION,
> > > + }, {
> > > .pixfmt = V4L2_PIX_FMT_H264,
> > > .min_buffers = 2,
> > > .max_buffers = 24,
> > > @@ -165,6 +191,18 @@ static const struct amvdec_format vdec_formats_g12a[] = {
> > >
> > > static const struct amvdec_format vdec_formats_sm1[] = {
> > > {
> > > + .pixfmt = V4L2_PIX_FMT_VP9,
> > > + .min_buffers = 16,
> > > + .max_buffers = 24,
> > > + .max_width = 3840,
> > > + .max_height = 2160,
> > > + .vdec_ops = &vdec_hevc_ops,
> > > + .codec_ops = &codec_vp9_ops,
> > > + .firmware_path = "meson/vdec/g12a_vp9.bin",
> > > + .pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
> > > + .flags = V4L2_FMT_FLAG_COMPRESSED |
> > > + V4L2_FMT_FLAG_DYN_RESOLUTION,
> > > + }, {
> > > .pixfmt = V4L2_PIX_FMT_H264,
> > > .min_buffers = 2,
> > > .max_buffers = 24,

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