[FFmpeg-devel] [PATCH V2] libavfilter/vaapi: enable vaapi rotation feature via call Intel iHD driver

mypopy at gmail.com mypopy at gmail.com
Mon Oct 29 03:58:28 EET 2018


On Fri, Oct 26, 2018 at 11:26 PM Paul B Mahol <onemda at gmail.com> wrote:
>
> On 10/26/18, Zhou, Zachary <zachary.zhou at intel.com> wrote:
> >
> >
> >> -----Original Message-----
> >> From: ffmpeg-devel [mailto:ffmpeg-devel-bounces at ffmpeg.org] On Behalf Of
> >> Rostislav Pehlivanov
> >> Sent: Friday, October 26, 2018 9:02 PM
> >> To: FFmpeg development discussions and patches <ffmpeg-devel at ffmpeg.org>
> >> Subject: Re: [FFmpeg-devel] [PATCH V2] libavfilter/vaapi: enable vaapi
> >> rotation feature via call Intel iHD driver
> >>
> >> On Fri, 26 Oct 2018 at 04:10, Zhou, Zachary <zachary.zhou at intel.com>
> >> wrote:
> >>
> >> >
> >> >
> >> > > -----Original Message-----
> >> > > From: ffmpeg-devel [mailto:ffmpeg-devel-bounces at ffmpeg.org] On
> >> > > Behalf Of sean darcy
> >> > > Sent: Thursday, October 25, 2018 11:51 PM
> >> > > To: ffmpeg-devel at ffmpeg.org
> >> > > Subject: Re: [FFmpeg-devel] [PATCH V2] libavfilter/vaapi: enable
> >> > > vaapi rotation feature via call Intel iHD driver
> >> > >
> >> > > On 10/25/18 2:52 AM, Zachary Zhou wrote:
> >> > > > It supports clockwise rotation by 0/90/180/270 degrees defined in
> >> > > > va/va_vpp.h, tested following command line on SKL platform
> >> > > >
> >> > > > dir=0 for 0   degree
> >> > > > dir=1 for 90  degree
> >> > > > dir=2 for 180 degree
> >> > > > dir=3 for 270 degree
> >> > > >
> >> > > > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128
> >> > > > -hwaccel_output_format vaapi -i input.264 -vf
> >> > > > "rotation_vaapi=dir=1"
> >> > > > -c:v h264_vaapi output.h264
> >> > > >
> >> > > > Signed-off-by: Zachary Zhou <zachary.zhou at intel.com>
> >> > > > ---
> >> > > >   configure                     |   3 +
> >> > > >   libavfilter/Makefile          |   1 +
> >> > > >   libavfilter/allfilters.c      |   1 +
> >> > > >   libavfilter/vaapi_vpp.h       |   1 +
> >> > > >   libavfilter/vf_rotate_vaapi.c | 252
> >> > ++++++++++++++++++++++++++++++++++
> >> > > >   5 files changed, 258 insertions(+)
> >> > > >   create mode 100644 libavfilter/vf_rotate_vaapi.c
> >> > > >
> >> > > > diff --git a/configure b/configure index 85d5dd5962..33aced3d78
> >> > > > 100755
> >> > > > --- a/configure
> >> > > > +++ b/configure
> >> > > > @@ -6390,6 +6390,9 @@ if enabled vaapi; then
> >> > > >       fi
> >> > > >
> >> > > >       check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0,
> >> 0)"
> >> > > > +    if ! check_struct "va/va.h" "struct _VAProcPipelineCaps"
> >> > rotation_flags;
> >> > > then
> >> > > > +        disable rotation_vaapi_filter
> >> > > > +    fi
> >> > > >   fi
> >> > > >
> >> > > >   if enabled_all opencl libdrm ; then diff --git
> >> > > > a/libavfilter/Makefile b/libavfilter/Makefile index
> >> > > > 108a2f87d7..534650364a 100644
> >> > > > --- a/libavfilter/Makefile
> >> > > > +++ b/libavfilter/Makefile
> >> > > > @@ -349,6 +349,7 @@ OBJS-$(CONFIG_SETRANGE_FILTER)               +=
> >> > > vf_setparams.o
> >> > > >   OBJS-$(CONFIG_SETSAR_FILTER)                 += vf_aspect.o
> >> > > >   OBJS-$(CONFIG_SETTB_FILTER)                  += settb.o
> >> > > >   OBJS-$(CONFIG_SHARPNESS_VAAPI_FILTER)        += vf_misc_vaapi.o
> >> > > vaapi_vpp.o
> >> > > > +OBJS-$(CONFIG_ROTATION_VAAPI_FILTER)         += vf_rotate_vaapi.o
> >> > > vaapi_vpp.o
> >> > > >   OBJS-$(CONFIG_SHOWINFO_FILTER)               += vf_showinfo.o
> >> > > >   OBJS-$(CONFIG_SHOWPALETTE_FILTER)            += vf_showpalette.o
> >> > > >   OBJS-$(CONFIG_SHUFFLEFRAMES_FILTER)          +=
> >> > > > vf_shuffleframes.o
> >> > > > diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> >> > > > index
> >> > > > 557590850b..4b90a7f440 100644
> >> > > > --- a/libavfilter/allfilters.c
> >> > > > +++ b/libavfilter/allfilters.c
> >> > > > @@ -333,6 +333,7 @@ extern AVFilter ff_vf_setrange;
> >> > > >   extern AVFilter ff_vf_setsar;
> >> > > >   extern AVFilter ff_vf_settb;
> >> > > >   extern AVFilter ff_vf_sharpness_vaapi;
> >> > > > +extern AVFilter ff_vf_rotation_vaapi;
> >> > > >   extern AVFilter ff_vf_showinfo;
> >> > > >   extern AVFilter ff_vf_showpalette;
> >> > > >   extern AVFilter ff_vf_shuffleframes; diff --git
> >> > > > a/libavfilter/vaapi_vpp.h b/libavfilter/vaapi_vpp.h index
> >> > > > 0bc31018d4..cfe19b689f 100644
> >> > > > --- a/libavfilter/vaapi_vpp.h
> >> > > > +++ b/libavfilter/vaapi_vpp.h
> >> > > > @@ -44,6 +44,7 @@ typedef struct VAAPIVPPContext {
> >> > > >       int output_width;   // computed width
> >> > > >       int output_height;  // computed height
> >> > > >
> >> > > > +    int rotation_state;
> >> > > >       VABufferID         filter_buffers[VAProcFilterCount];
> >> > > >       int                nb_filter_buffers;
> >> > > >
> >> > > > diff --git a/libavfilter/vf_rotate_vaapi.c
> >> > > > b/libavfilter/vf_rotate_vaapi.c new file mode 100644 index
> >> > > > 0000000000..34c270e9c7
> >> > > > --- /dev/null
> >> > > > +++ b/libavfilter/vf_rotate_vaapi.c
> >> > > > @@ -0,0 +1,252 @@
> >> > > > +/*
> >> > > > + * This file is part of FFmpeg.
> >> > > > + *
> >> > > > + * FFmpeg is free software; you can redistribute it and/or
> >> > > > + * modify it under the terms of the GNU Lesser General Public
> >> > > > + * License as published by the Free Software Foundation; either
> >> > > > + * version 2.1 of the License, or (at your option) any later
> >> > > > version.
> >> > > > + *
> >> > > > + * FFmpeg is distributed in the hope that it will be useful,
> >> > > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >> > > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> >> > > GNU
> >> > > > + * Lesser General Public License for more details.
> >> > > > + *
> >> > > > + * You should have received a copy of the GNU Lesser General
> >> > > > +Public
> >> > > > + * License along with FFmpeg; if not, write to the Free Software
> >> > > > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> >> > > > +02110-1301 USA  */ #include <string.h>
> >> > > > +
> >> > > > +#include "libavutil/avassert.h"
> >> > > > +#include "libavutil/mem.h"
> >> > > > +#include "libavutil/opt.h"
> >> > > > +#include "libavutil/pixdesc.h"
> >> > > > +
> >> > > > +#include "avfilter.h"
> >> > > > +#include "formats.h"
> >> > > > +#include "internal.h"
> >> > > > +#include "vaapi_vpp.h"
> >> > > > +
> >> > > > +// Rotation angle values
> >> > > > +enum RotationAngle {
> >> > > > +    ROTATION_0   = 0,
> >> > > > +    ROTATION_90  = 1,
> >> > > > +    ROTATION_180 = 2,
> >> > > > +    ROTATION_270 = 3,
> >> > > > +
> >> > > > +    ROTATION_MIN     = ROTATION_0,
> >> > > > +    ROTATION_MAX     = ROTATION_270,
> >> > > > +    ROTATION_DEFAULT = ROTATION_0, };
> >> > > > +
> >> > > > +typedef struct RotationVAAPIContext {
> >> > > > +    VAAPIVPPContext vpp_ctx; // must be the first field
> >> > > > +
> >> > > > +    int rotation;        // enable rotation.
> >> > > > +} RotationVAAPIContext;
> >> > > > +
> >> > > > +static int rotation_vaapi_build_filter_params(AVFilterContext
> >> > > > +*avctx) {
> >> > > > +    VAAPIVPPContext *vpp_ctx  = avctx->priv;
> >> > > > +    RotationVAAPIContext *ctx = avctx->priv;
> >> > > > +
> >> > > > +    VAStatus vas;
> >> > > > +    int support_flag;
> >> > > > +
> >> > > > +    VAProcPipelineCaps pipeline_caps;
> >> > > > +
> >> > > > +    memset(&pipeline_caps, 0, sizeof(pipeline_caps));
> >> > > > +    vas = vaQueryVideoProcPipelineCaps(vpp_ctx->hwctx->display,
> >> > > > +                                       vpp_ctx->va_context,
> >> > > > +                                       NULL, 0,
> >> > > > +                                       &pipeline_caps);
> >> > > > +    if (vas != VA_STATUS_SUCCESS) {
> >> > > > +        av_log(avctx, AV_LOG_ERROR, "Failed to query pipeline "
> >> > > > +               "caps: %d (%s).\n", vas, vaErrorStr(vas));
> >> > > > +        return AVERROR(EIO);
> >> > > > +    }
> >> > > > +
> >> > > > +    if (!pipeline_caps.rotation_flags) {
> >> > > > +        av_log(avctx, AV_LOG_ERROR, "VAAPI driver doesn't support
> >> > > rotation\n");
> >> > > > +        return AVERROR(EINVAL);
> >> > > > +    }
> >> > > > +
> >> > > > +    switch (ctx->rotation) {
> >> > > > +    case ROTATION_0:
> >> > > > +        vpp_ctx->rotation_state = VA_ROTATION_NONE;
> >> > > > +        break;
> >> > > > +    case ROTATION_90:
> >> > > > +        vpp_ctx->rotation_state = VA_ROTATION_90;
> >> > > > +        break;
> >> > > > +    case ROTATION_180:
> >> > > > +        vpp_ctx->rotation_state = VA_ROTATION_180;
> >> > > > +        break;
> >> > > > +    case ROTATION_270:
> >> > > > +        vpp_ctx->rotation_state = VA_ROTATION_270;
> >> > > > +        break;
> >> > > > +    default:
> >> > > > +        av_log(avctx, AV_LOG_ERROR, "Failed to set rotation_state
> >> > > > + to
> >> > %d. "
> >> > > > +               "Clockwise %d, %d, %d and %d are only supported\n",
> >> > > > +               ctx->rotation,
> >> > > > +               ROTATION_0, ROTATION_90, ROTATION_180,
> >> > > > ROTATION_270);
> >> > > > +        return AVERROR(EINVAL);
> >> > > > +    }
> >> > > > +
> >> > > > +    support_flag = pipeline_caps.rotation_flags &
> >> > > > +                   (1 << vpp_ctx->rotation_state);
> >> > > > +    if (!support_flag) {
> >> > > > +        av_log(avctx, AV_LOG_ERROR, "VAAPI driver doesn't support
> >> > %d\n",
> >> > > > +               ctx->rotation);
> >> > > > +        return AVERROR(EINVAL);
> >> > > > +    }
> >> > > > +
> >> > > > +    return 0;
> >> > > > +}
> >> > > > +
> >> > > > +static int rotation_vaapi_filter_frame(AVFilterLink *inlink,
> >> > > > +AVFrame
> >> > > > +*input_frame) {
> >> > > > +    AVFilterContext *avctx   = inlink->dst;
> >> > > > +    AVFilterLink *outlink    = avctx->outputs[0];
> >> > > > +    VAAPIVPPContext *vpp_ctx = avctx->priv;
> >> > > > +    AVFrame *output_frame    = NULL;
> >> > > > +    VASurfaceID input_surface, output_surface;
> >> > > > +    VARectangle input_region;
> >> > > > +
> >> > > > +    VAProcPipelineParameterBuffer params;
> >> > > > +    int err;
> >> > > > +
> >> > > > +    av_log(avctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u
> >> > (%"PRId64").\n",
> >> > > > +           av_get_pix_fmt_name(input_frame->format),
> >> > > > +           input_frame->width, input_frame->height,
> >> > > > + input_frame->pts);
> >> > > > +
> >> > > > +    if (vpp_ctx->va_context == VA_INVALID_ID)
> >> > > > +        return AVERROR(EINVAL);
> >> > > > +
> >> > > > +    input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
> >> > > > +    av_log(avctx, AV_LOG_DEBUG, "Using surface %#x for misc vpp
> >> > input.\n",
> >> > > > +           input_surface);
> >> > > > +
> >> > > > +    output_frame = ff_get_video_buffer(outlink,
> >> > > > vpp_ctx->output_width,
> >> > > > +                                       vpp_ctx->output_height);
> >> > > > +    if (!output_frame) {
> >> > > > +        err = AVERROR(ENOMEM);
> >> > > > +        goto fail;
> >> > > > +    }
> >> > > > +
> >> > > > +    output_surface =
> >> > > > (VASurfaceID)(uintptr_t)output_frame->data[3];
> >> > > > +    av_log(avctx, AV_LOG_DEBUG, "Using surface %#x for misc vpp
> >> > > output.\n",
> >> > > > +           output_surface);
> >> > > > +    memset(&params, 0, sizeof(params));
> >> > > > +    input_region = (VARectangle) {
> >> > > > +        .x      = 0,
> >> > > > +        .y      = 0,
> >> > > > +        .width  = input_frame->width,
> >> > > > +        .height = input_frame->height,
> >> > > > +    };
> >> > > > +
> >> > > > +    switch (vpp_ctx->rotation_state) {
> >> > > > +    case VA_ROTATION_NONE:
> >> > > > +    case VA_ROTATION_90:
> >> > > > +    case VA_ROTATION_180:
> >> > > > +    case VA_ROTATION_270:
> >> > > > +        params.rotation_state = vpp_ctx->rotation_state;
> >> > > > +        break;
> >> > > > +    default:
> >> > > > +        av_log(avctx, AV_LOG_ERROR, "VAAPI doesn't support %d\n",
> >> > > > +               vpp_ctx->rotation_state);
> >> > > > +        goto fail;
> >> > > > +    }
> >> > > > +
> >> > > > +    if (vpp_ctx->nb_filter_buffers) {
> >> > > > +        params.filters     = &vpp_ctx->filter_buffers[0];
> >> > > > +        params.num_filters = vpp_ctx->nb_filter_buffers;
> >> > > > +    }
> >> > > > +    params.surface = input_surface;
> >> > > > +    params.surface_region = &input_region;
> >> > > > +    params.surface_color_standard =
> >> > > > +        ff_vaapi_vpp_colour_standard(input_frame->colorspace);
> >> > > > +
> >> > > > +    params.output_region = NULL;
> >> > > > +    params.output_background_color = 0xff000000;
> >> > > > +    params.output_color_standard = params.surface_color_standard;
> >> > > > +
> >> > > > +    params.pipeline_flags = 0;
> >> > > > +    params.filter_flags = VA_FRAME_PICTURE;
> >> > > > +
> >> > > > +    err = ff_vaapi_vpp_render_picture(avctx, &params,
> >> > > > output_surface);
> >> > > > +    if (err < 0)
> >> > > > +        goto fail;
> >> > > > +
> >> > > > +    err = av_frame_copy_props(output_frame, input_frame);
> >> > > > +    if (err < 0)
> >> > > > +        goto fail;
> >> > > > +    av_frame_free(&input_frame);
> >> > > > +
> >> > > > +    av_log(avctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u
> >> > > (%"PRId64").\n",
> >> > > > +           av_get_pix_fmt_name(output_frame->format),
> >> > > > +           output_frame->width, output_frame->height,
> >> > > > + output_frame->pts);
> >> > > > +
> >> > > > +    return ff_filter_frame(outlink, output_frame);
> >> > > > +
> >> > > > +fail:
> >> > > > +    av_frame_free(&input_frame);
> >> > > > +    av_frame_free(&output_frame);
> >> > > > +    return err;
> >> > > > +}
> >> > > > +
> >> > > > +static av_cold int rotation_vaapi_init(AVFilterContext *avctx) {
> >> > > > +    VAAPIVPPContext *vpp_ctx = avctx->priv;
> >> > > > +
> >> > > > +    ff_vaapi_vpp_ctx_init(avctx);
> >> > > > +    vpp_ctx->pipeline_uninit     = ff_vaapi_vpp_pipeline_uninit;
> >> > > > +    vpp_ctx->build_filter_params =
> >> > > > rotation_vaapi_build_filter_params;
> >> > > > +    vpp_ctx->output_format       = AV_PIX_FMT_NONE;
> >> > > > +
> >> > > > +    return 0;
> >> > > > +}
> >> > > > +
> >> > > > +#define ROFFSET(x) offsetof(RotationVAAPIContext, x) #define
> >> > > > +FLAGS (AV_OPT_FLAG_VIDEO_PARAM |
> >> AV_OPT_FLAG_FILTERING_PARAM)
> >> > > > +static
> >> > > const
> >> > > > +AVOption rotation_vaapi_options[] = {
> >> > > > +    { "dir", "set roation direction", ROFFSET(rotation),
> >> > AV_OPT_TYPE_INT,
> >> > > { .i64 = ROTATION_MIN }, ROTATION_MIN, ROTATION_MAX, FLAGS, "dir" },
> >> > > > +        { "clock_0",   "rotate clockwise 0 degrees",   0,
> >> > AV_OPT_TYPE_CONST,
> >> > > { .i64 = ROTATION_0 },   .flags=FLAGS, .unit = "dir" },
> >> > > > +        { "clock_90",  "rotate clockwise 90 degrees",  0,
> >> > AV_OPT_TYPE_CONST,
> >> > > { .i64 = ROTATION_90},   .flags=FLAGS, .unit = "dir" },
> >> > > > +        { "clock_180", "rotate clockwise 180 degrees", 0,
> >> > AV_OPT_TYPE_CONST,
> >> > > { .i64 = ROTATION_180 }, .flags=FLAGS, .unit = "dir" },
> >> > > > +        { "clock_270", "rotate clockwise 270 degrees", 0,
> >> > AV_OPT_TYPE_CONST,
> >> > > { .i64 = ROTATION_270 }, .flags=FLAGS, .unit = "dir" },
> >> > > > +    { NULL },
> >> > > > +};
> >> > > > +
> >> > > > +AVFILTER_DEFINE_CLASS(rotation_vaapi);
> >> > > > +
> >> > > > +static const AVFilterPad rotation_vaapi_inputs[] = {
> >> > > > +    {
> >> > > > +        .name         = "default",
> >> > > > +        .type         = AVMEDIA_TYPE_VIDEO,
> >> > > > +        .filter_frame = &rotation_vaapi_filter_frame,
> >> > > > +        .config_props = &ff_vaapi_vpp_config_input,
> >> > > > +    },
> >> > > > +    { NULL }
> >> > > > +};
> >> > > > +
> >> > > > +static const AVFilterPad rotation_vaapi_outputs[] = {
> >> > > > +    {
> >> > > > +        .name = "default",
> >> > > > +        .type = AVMEDIA_TYPE_VIDEO,
> >> > > > +        .config_props = &ff_vaapi_vpp_config_output,
> >> > > > +    },
> >> > > > +    { NULL }
> >> > > > +};
> >> > > > +
> >> > > > +AVFilter ff_vf_rotation_vaapi = {
> >> > > > +    .name          = "rotation_vaapi",
> >> > > > +    .description   = NULL_IF_CONFIG_SMALL("VAAPI VPP for
> >> > > > rotation"),
> >> > > > +    .priv_size     = sizeof(RotationVAAPIContext),
> >> > > > +    .init          = &rotation_vaapi_init,
> >> > > > +    .uninit        = &ff_vaapi_vpp_ctx_uninit,
> >> > > > +    .query_formats = &ff_vaapi_vpp_query_formats,
> >> > > > +    .inputs        = rotation_vaapi_inputs,
> >> > > > +    .outputs       = rotation_vaapi_outputs,
> >> > > > +    .priv_class    = &rotation_vaapi_class,
> >> > > > +    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, };
> >> > > >
> >> > > How about:
> >> > >
> >> > > deg=0 for 0   degree
> >> > > deg=90 for 90  degree
> >> > > deg=180 for 180 degree
> >> > > deg=270 for 270 degree
> >> > >
> >> > > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128
> >> > >   -hwaccel_output_format vaapi -i input.264 -vf
> >> > > "rotation_vaapi=deg=90"
> >> > >   -c:v h264_vaapi output.h264
> >> > >
> >> > > The rotation is in degrees , not direction. And using the actual
> >> > > degrees
> >> > instead
> >> > > of magic numbers makes it more obvious for the user.
> >> >
> >> >
> >> > My first version of the
> >> > patch(https://patchwork.ffmpeg.org/patch/10754/)
> >> > just like this.
> >> >
> >> > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128
> >> > -hwaccel_output_format vaapi -i input.264 -vf "rotation_vaapi=angle=90"
> >> > -c:v h264_vaapi output.h264
> >> >
> >> > And I got comments to add sub-options. the sub-options are clock_0,
> >> > clock_90, clock_180, clock_270, the command line likes this.
> >> >
> >> > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128
> >> > -hwaccel_output_format vaapi -i input.264 -vf "rotation_vaapi=
> >> > clock_270"
> >> > -c:v h264_vaapi output.h264
> >> >
> >> >
> >> > >
> >> > > _______________________________________________
> >> > > ffmpeg-devel mailing list
> >> > > ffmpeg-devel at ffmpeg.org
> >> > > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >> > _______________________________________________
> >> > ffmpeg-devel mailing list
> >> > ffmpeg-devel at ffmpeg.org
> >> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >>
> >>
> >> Please, call it transpose_vaapi, and make it accept the same options as
> >> the
> >> transpose filter we have.
> >> transpose != rotation.
> >
> > Actually, I want to change back to "rotation_vaapi=angle=90", I agree  "sean
> > darcy <seandarcy2 at gmail.com>" comments, and I think this filter is different
> > with transpose.
> >
> > 1. This filter no vflip/hflip support, but transpose has vflip/hflip, in
> > VAAPI another feature Mirroring, hflip/vflip are supported by using
> > VAProcPipelineParameterBuffer::mirror_state. I was planning enable VAAPI
> > mirroring in another patch.
> > 2. Currently VAAPI rotation only support 0/90/180/270 degrees, not sure
> > VAAPI will add more degrees in future, so I want to keep the name
> > rotation_vaapi to align VAAPI.
> > 3. I don't want to put VAAPI rotation and VAAPI mirroring together to enable
> > a similar but not same with transpose currently, Because the same options
> > and the different functions may call people confuse.
> >
> > My first version patch has already included  the discussion regarding the
> > filter name and options. https://patchwork.ffmpeg.org/patch/10754/
> >
>
> Why we need yet another rotation filter that does not do rotation but
> does rotation in 4 fixed ways?
> Seriously? This needs some serious quality control.
> _______________________________________________
>
I know Mark have given a openCL rotation filter implement with any
angle support, so I didn't submitted the patch even I have implement
the VA-API rotation filter in last year.


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