avfilter: add VA-API variants of the stack filters

Include hstack_vaapi, vstack_vaapi and xstack_vaapi. They may accept
input streams with different sizes.  libva2 (VA-API 1.0+) is required.

Example:
$ ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -i input.h265 -filter_complex
"[0:v][0:v]hstack_vaapi" -c:v h264_vaapi out.h264

$ ffmpeg \
-hwaccel vaapi -hwaccel_output_format vaapi -i input.h264 \
-hwaccel vaapi -hwaccel_output_format vaapi -i input.h264 \
-hwaccel vaapi -hwaccel_output_format vaapi -i input.h264 \
-hwaccel vaapi -hwaccel_output_format vaapi -i input.h264 \
-filter_complex "[0:v][1:v][2:v][3:v]xstack_vaapi=inputs=4:fill=0x000000:layout=0_0_1920x1080|w0_0_1920x1080|0_h0_1920x1080|w0_h0_1920x1080" \
-c:v hevc_vaapi out.h265

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>

Changelog

@@ -33,6 +33,7 @@ version <next>:
 - CBD2 DPCM decoder
 - ssim360 video filter
 - ffmpeg CLI new options: -enc_stats_pre[_fmt], -enc_stats_post[_fmt]
+- hstack_vaapi, vstack_vaapi and xstack_vaapi filters
 
 
 version 5.1:

configure

@@ -3766,6 +3766,9 @@ xfade_opencl_filter_deps="opencl"
 yadif_cuda_filter_deps="ffnvcodec"
 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
 yadif_videotoolbox_filter_deps="metal corevideo videotoolbox"
+hstack_vaapi_filter_deps="vaapi_1"
+vstack_vaapi_filter_deps="vaapi_1"
+xstack_vaapi_filter_deps="vaapi_1"
 
 # examples
 avio_list_dir_deps="avformat avutil"

doc/filters.texi

@@ -14941,6 +14941,7 @@ Set the scaling dimension: @code{2} for @code{hq2x}, @code{3} for
 Default is @code{3}.
 @end table
 
+@anchor{hstack}
 @section hstack
 Stack input videos horizontally.
 
@@ -24392,6 +24393,7 @@ Example:
 ffmpeg -i ref.mpg -vf vmafmotion -f null -
 @end example
 
+@anchor{vstack}
 @section vstack
 Stack input videos vertically.
 
@@ -24873,6 +24875,7 @@ minimum values, and @code{1} maximum values.
 
 This filter supports all above options as @ref{commands}, excluding option @code{inputs}.
 
+@anchor{xstack}
 @section xstack
 Stack video inputs into custom layout.
 
@@ -26689,6 +26692,84 @@ tonemap_vaapi=format=p010:t=bt2020-10
 @end example
 @end itemize
 
+@section hstack_vaapi
+Stack input videos horizontally.
+
+This is the VA-API variant of the @ref{hstack} filter, each input stream may
+have different height, this filter will scale down/up each input stream while
+keeping the orignal aspect.
+
+It accepts the following options:
+
+@table @option
+@item inputs
+See @ref{hstack}.
+
+@item shortest
+See @ref{hstack}.
+
+@item height
+Set height of output. If set to 0, this filter will set height of output to
+height of the first input stream. Default value is 0.
+@end table
+
+@section vstack_vaapi
+Stack input videos vertically.
+
+This is the VA-API variant of the @ref{vstack} filter, each input stream may
+have different width, this filter will scale down/up each input stream while
+keeping the orignal aspect.
+
+It accepts the following options:
+
+@table @option
+@item inputs
+See @ref{vstack}.
+
+@item shortest
+See @ref{vstack}.
+
+@item width
+Set width of output. If set to 0, this filter will set width of output to
+width of the first input stream. Default value is 0.
+@end table
+
+@section xstack_vaapi
+Stack video inputs into custom layout.
+
+This is the VA-API variant of the @ref{xstack} filter,  each input stream may
+have different size, this filter will scale down/up each input stream to the
+given output size, or the size of the first input stream.
+
+It accepts the following options:
+
+@table @option
+@item inputs
+See @ref{xstack}.
+
+@item shortest
+See @ref{xstack}.
+
+@item layout
+See @ref{xstack}.
+Moreover, this permits the user to supply output size for each input stream.
+@example
+xstack_vaapi=inputs=4:layout=0_0_1920x1080|0_h0_1920x1080|w0_0_1920x1080|w0_h0_1920x1080
+@end example
+
+@item grid
+See @ref{xstack}.
+
+@item grid_tile_size
+Set output size for each input stream when @option{grid} is set. If this option
+is not set, this filter will set output size by default to the size of the
+first input stream. For the syntax of this option, check the
+@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}.
+
+@item fill
+See @ref{xstack}.
+@end table
+
 @c man end VAAPI VIDEO FILTERS
 
 @chapter Video Sources

libavfilter/Makefile

@@ -558,6 +558,9 @@ OBJS-$(CONFIG_YAEPBLUR_FILTER)               += vf_yaepblur.o
 OBJS-$(CONFIG_ZMQ_FILTER)                    += f_zmq.o
 OBJS-$(CONFIG_ZOOMPAN_FILTER)                += vf_zoompan.o
 OBJS-$(CONFIG_ZSCALE_FILTER)                 += vf_zscale.o
+OBJS-$(CONFIG_HSTACK_VAAPI_FILTER)           += vf_stack_vaapi.o framesync.o vaapi_vpp.o
+OBJS-$(CONFIG_VSTACK_VAAPI_FILTER)           += vf_stack_vaapi.o framesync.o vaapi_vpp.o
+OBJS-$(CONFIG_XSTACK_VAAPI_FILTER)           += vf_stack_vaapi.o framesync.o vaapi_vpp.o
 
 OBJS-$(CONFIG_ALLRGB_FILTER)                 += vsrc_testsrc.o
 OBJS-$(CONFIG_ALLYUV_FILTER)                 += vsrc_testsrc.o

libavfilter/allfilters.c

@@ -523,6 +523,9 @@ extern const AVFilter ff_vf_yaepblur;
 extern const AVFilter ff_vf_zmq;
 extern const AVFilter ff_vf_zoompan;
 extern const AVFilter ff_vf_zscale;
+extern const AVFilter ff_vf_hstack_vaapi;
+extern const AVFilter ff_vf_vstack_vaapi;
+extern const AVFilter ff_vf_xstack_vaapi;
 
 extern const AVFilter ff_vsrc_allrgb;
 extern const AVFilter ff_vsrc_allyuv;

libavfilter/version.h

@@ -31,7 +31,7 @@
 
 #include "version_major.h"
 
-#define LIBAVFILTER_VERSION_MINOR  55
+#define LIBAVFILTER_VERSION_MINOR  56
 #define LIBAVFILTER_VERSION_MICRO 100
 
 

libavfilter/vf_stack_vaapi.c

@@ -0,0 +1,574 @@
+/*
+ * 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
+ */
+
+/**
+ * @file
+ * Hardware accelerated hstack, vstack and xstack filters based on VA-API
+ */
+
+#include "config_components.h"
+
+#include "libavutil/opt.h"
+#include "libavutil/common.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/eval.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/avstring.h"
+#include "libavutil/avassert.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/mem.h"
+
+#include "internal.h"
+#include "filters.h"
+#include "formats.h"
+#include "video.h"
+#include "framesync.h"
+#include "vaapi_vpp.h"
+
+#define OFFSET(x) offsetof(StackVAAPIContext, x)
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
+
+enum {
+    STACK_VAAPI_H = 0,
+    STACK_VAAPI_V = 1,
+    STACK_VAAPI_X = 2
+};
+
+typedef struct StackVAAPIContext {
+    VAAPIVPPContext vppctx; /**< must be the first field */
+
+    FFFrameSync fs;
+    int mode;
+    VARectangle *rects;
+    uint8_t fillcolor[4];
+    int fillcolor_enable;
+
+    /* Options */
+    int nb_inputs;
+    int shortest;
+    int tile_width;
+    int tile_height;
+    int nb_grid_columns;
+    int nb_grid_rows;
+    char *layout;
+    char *fillcolor_str;
+} StackVAAPIContext;
+
+static int process_frame(FFFrameSync *fs)
+{
+    AVFilterContext *avctx = fs->parent;
+    AVFilterLink *outlink = avctx->outputs[0];
+    StackVAAPIContext *sctx = fs->opaque;
+    VAAPIVPPContext *vppctx = fs->opaque;
+    AVFrame *oframe, *iframe;
+    VAProcPipelineParameterBuffer *params = NULL;
+    VARectangle *irect = NULL;
+    int ret = 0;
+
+    if (vppctx->va_context == VA_INVALID_ID)
+        return AVERROR(EINVAL);
+
+    oframe = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+    if (!oframe)
+        return AVERROR(ENOMEM);
+
+    irect = av_calloc(avctx->nb_inputs, sizeof(*irect));
+    params = av_calloc(avctx->nb_inputs, sizeof(*params));
+    if (!irect || !params) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    for (int i = 0; i < avctx->nb_inputs; i++) {
+        ret = ff_framesync_get_frame(fs, i, &iframe, 0);
+        if (ret)
+            goto fail;
+
+        if (i == 0) {
+            ret = av_frame_copy_props(oframe, iframe);
+            if (ret < 0)
+                goto fail;
+        }
+
+        ret = ff_vaapi_vpp_init_params(avctx, &params[i], iframe, oframe);
+        if (ret)
+            goto fail;
+
+        av_log(avctx, AV_LOG_DEBUG, "stack input %d: %s, %ux%u (%"PRId64").\n",
+               i, av_get_pix_fmt_name(iframe->format),
+               iframe->width, iframe->height, iframe->pts);
+        irect[i].x = 0;
+        irect[i].y = 0;
+        irect[i].width = iframe->width;
+        irect[i].height = iframe->height;
+        params[i].surface_region = &irect[i];
+        params[i].surface = (VASurfaceID)(uintptr_t)iframe->data[3];
+        params[i].output_region = &sctx->rects[i];
+
+        if (sctx->fillcolor_enable)
+            params[i].output_background_color = (sctx->fillcolor[3] << 24 |
+                                                 sctx->fillcolor[0] << 16 |
+                                                 sctx->fillcolor[1] << 8 |
+                                                 sctx->fillcolor[2]);
+    }
+
+    oframe->pts = av_rescale_q(sctx->fs.pts, sctx->fs.time_base, outlink->time_base);
+    oframe->sample_aspect_ratio = outlink->sample_aspect_ratio;
+
+    ret = ff_vaapi_vpp_render_pictures(avctx, params, avctx->nb_inputs, oframe);
+    if (ret)
+        goto fail;
+
+    av_freep(&irect);
+    av_freep(&params);
+    return ff_filter_frame(outlink, oframe);
+
+fail:
+    av_freep(&irect);
+    av_freep(&params);
+    av_frame_free(&oframe);
+    return ret;
+}
+
+static int init_framesync(AVFilterContext *avctx)
+{
+    StackVAAPIContext *sctx = avctx->priv;
+    int ret;
+
+    ret = ff_framesync_init(&sctx->fs, avctx, avctx->nb_inputs);
+    if (ret < 0)
+        return ret;
+
+    sctx->fs.on_event = process_frame;
+    sctx->fs.opaque = sctx;
+
+    for (int i = 0; i < sctx->nb_inputs; i++) {
+        FFFrameSyncIn *in = &sctx->fs.in[i];
+
+        in->before = EXT_STOP;
+        in->after = sctx->shortest ? EXT_STOP : EXT_INFINITY;
+        in->sync = 1;
+        in->time_base = avctx->inputs[i]->time_base;
+    }
+
+    return ff_framesync_configure(&sctx->fs);
+}
+
+#define SET_INPUT_REGION(rect, rx, ry, rw, rh) do {     \
+        rect->x = rx;                                   \
+        rect->y = ry;                                   \
+        rect->width = rw;                               \
+        rect->height = rh;                              \
+    } while (0)
+
+static int config_output(AVFilterLink *outlink)
+{
+    AVFilterContext *avctx = outlink->src;
+    StackVAAPIContext *sctx = avctx->priv;
+    VAAPIVPPContext *vppctx = avctx->priv;
+    AVFilterLink *inlink0 = avctx->inputs[0];
+    AVHWFramesContext *hwfc0 = NULL;
+    int width, height, ret;
+
+    if (inlink0->format != AV_PIX_FMT_VAAPI || !inlink0->hw_frames_ctx || !inlink0->hw_frames_ctx->data) {
+        av_log(avctx, AV_LOG_ERROR, "Software pixel format is not supported.\n");
+        return AVERROR(EINVAL);
+    }
+
+    hwfc0 = (AVHWFramesContext *)inlink0->hw_frames_ctx->data;
+
+    for (int i = 1; i < sctx->nb_inputs; i++) {
+        AVFilterLink *inlink = avctx->inputs[i];
+        AVHWFramesContext *hwfc = NULL;
+
+        if (inlink->format != AV_PIX_FMT_VAAPI || !inlink->hw_frames_ctx || !inlink->hw_frames_ctx->data) {
+            av_log(avctx, AV_LOG_ERROR, "Software pixel format is not supported.\n");
+            return AVERROR(EINVAL);
+        }
+
+        hwfc = (AVHWFramesContext *)inlink->hw_frames_ctx->data;
+
+        if (hwfc0->sw_format != hwfc->sw_format) {
+            av_log(avctx, AV_LOG_ERROR, "All inputs should have the same underlying software pixel format.\n");
+            return AVERROR(EINVAL);
+        }
+
+        if (hwfc0->device_ctx != hwfc->device_ctx) {
+            av_log(avctx, AV_LOG_ERROR, "All inputs should have the same underlying vaapi devices.\n");
+            return AVERROR(EINVAL);
+        }
+    }
+
+    ff_vaapi_vpp_config_input(inlink0);
+    vppctx->output_format = hwfc0->sw_format;
+
+    if (sctx->mode == STACK_VAAPI_H) {
+        height = sctx->tile_height;
+        width = 0;
+
+        if (!height)
+            height = inlink0->h;
+
+        for (int i = 0; i < sctx->nb_inputs; i++) {
+            AVFilterLink *inlink = avctx->inputs[i];
+            VARectangle *rect = &sctx->rects[i];
+
+            SET_INPUT_REGION(rect, width, 0, av_rescale(height, inlink->w, inlink->h), height);
+            width += av_rescale(height, inlink->w, inlink->h);
+        }
+    } else if (sctx->mode == STACK_VAAPI_V) {
+        height = 0;
+        width = sctx->tile_width;
+
+        if (!width)
+            width = inlink0->w;
+
+        for (int i = 0; i < sctx->nb_inputs; i++) {
+            AVFilterLink *inlink = avctx->inputs[i];
+            VARectangle *rect = &sctx->rects[i];
+
+            SET_INPUT_REGION(rect, 0, height, width, av_rescale(width, inlink->h, inlink->w));
+            height += av_rescale(width, inlink->h, inlink->w);
+        }
+    } else if (sctx->nb_grid_rows && sctx->nb_grid_columns) {
+        int xpos = 0, ypos = 0;
+        int ow, oh, k = 0;
+
+        ow = sctx->tile_width;
+        oh = sctx->tile_height;
+
+        if (!ow || !oh) {
+            ow = avctx->inputs[0]->w;
+            oh = avctx->inputs[0]->h;
+        }
+
+        for (int i = 0; i < sctx->nb_grid_columns; i++) {
+            ypos = 0;
+
+            for (int j = 0; j < sctx->nb_grid_rows; j++) {
+                VARectangle *rect = &sctx->rects[k++];
+
+                SET_INPUT_REGION(rect, xpos, ypos, ow, oh);
+                ypos += oh;
+            }
+
+            xpos += ow;
+        }
+
+        width = ow * sctx->nb_grid_columns;
+        height = oh * sctx->nb_grid_rows;
+    } else {
+        char *arg, *p = sctx->layout, *saveptr = NULL;
+        char *arg2, *p2, *saveptr2 = NULL;
+        char *arg3, *p3, *saveptr3 = NULL;
+        int xpos, ypos, size;
+        int ow, oh;
+
+        width = avctx->inputs[0]->w;
+        height = avctx->inputs[0]->h;
+
+        for (int i = 0; i < sctx->nb_inputs; i++) {
+            AVFilterLink *inlink = avctx->inputs[i];
+            VARectangle *rect = &sctx->rects[i];
+
+            ow = inlink->w;
+            oh = inlink->h;
+
+            if (!(arg = av_strtok(p, "|", &saveptr)))
+                return AVERROR(EINVAL);
+
+            p = NULL;
+            p2 = arg;
+            xpos = ypos = 0;
+
+            for (int j = 0; j < 3; j++) {
+                if (!(arg2 = av_strtok(p2, "_", &saveptr2))) {
+                    if (j == 2)
+                        break;
+                    else
+                        return AVERROR(EINVAL);
+                }
+
+                p2 = NULL;
+                p3 = arg2;
+
+                if (j == 2) {
+                    if ((ret = av_parse_video_size(&ow, &oh, p3)) < 0) {
+                        av_log(avctx, AV_LOG_ERROR, "Invalid size '%s'\n", p3);
+                        return ret;
+                    }
+
+                    break;
+                }
+
+                while ((arg3 = av_strtok(p3, "+", &saveptr3))) {
+                    p3 = NULL;
+                    if (sscanf(arg3, "w%d", &size) == 1) {
+                        if (size == i || size < 0 || size >= sctx->nb_inputs)
+                            return AVERROR(EINVAL);
+
+                        if (!j)
+                            xpos += sctx->rects[size].width;
+                        else
+                            ypos += sctx->rects[size].width;
+                    } else if (sscanf(arg3, "h%d", &size) == 1) {
+                        if (size == i || size < 0 || size >= sctx->nb_inputs)
+                            return AVERROR(EINVAL);
+
+                        if (!j)
+                            xpos += sctx->rects[size].height;
+                        else
+                            ypos += sctx->rects[size].height;
+                    } else if (sscanf(arg3, "%d", &size) == 1) {
+                        if (size < 0)
+                            return AVERROR(EINVAL);
+
+                        if (!j)
+                            xpos += size;
+                        else
+                            ypos += size;
+                    } else {
+                        return AVERROR(EINVAL);
+                    }
+                }
+            }
+
+            SET_INPUT_REGION(rect, xpos, ypos, ow, oh);
+            width = FFMAX(width,  xpos + ow);
+            height = FFMAX(height, ypos + oh);
+        }
+
+    }
+
+    outlink->w = width;
+    outlink->h = height;
+    outlink->frame_rate = inlink0->frame_rate;
+    outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
+
+    for (int i = 1; i < sctx->nb_inputs; i++) {
+        AVFilterLink *inlink = avctx->inputs[i];
+        if (outlink->frame_rate.num != inlink->frame_rate.num ||
+            outlink->frame_rate.den != inlink->frame_rate.den) {
+            av_log(avctx, AV_LOG_VERBOSE,
+                    "Video inputs have different frame rates, output will be VFR\n");
+            outlink->frame_rate = av_make_q(1, 0);
+            break;
+        }
+    }
+
+    ret = init_framesync(avctx);
+    if (ret < 0)
+        return ret;
+
+    outlink->time_base = sctx->fs.time_base;
+
+    vppctx->output_width = width;
+    vppctx->output_height = height;
+
+    return ff_vaapi_vpp_config_output(outlink);
+}
+
+static int vaapi_stack_init(AVFilterContext *avctx)
+{
+    StackVAAPIContext *sctx = avctx->priv;
+    VAAPIVPPContext *vppctx = avctx->priv;
+    int ret;
+
+    if (!strcmp(avctx->filter->name, "hstack_vaapi"))
+        sctx->mode = STACK_VAAPI_H;
+    else if (!strcmp(avctx->filter->name, "vstack_vaapi"))
+        sctx->mode = STACK_VAAPI_V;
+    else {
+        int is_grid;
+
+        av_assert0(strcmp(avctx->filter->name, "xstack_vaapi") == 0);
+        sctx->mode = STACK_VAAPI_X;
+        is_grid = sctx->nb_grid_rows && sctx->nb_grid_columns;
+
+        if (sctx->layout && is_grid) {
+            av_log(avctx, AV_LOG_ERROR, "Both layout and grid were specified. Only one is allowed.\n");
+            return AVERROR(EINVAL);
+        }
+
+        if (!sctx->layout && !is_grid) {
+            if (sctx->nb_inputs == 2) {
+                sctx->nb_grid_rows = 1;
+                sctx->nb_grid_columns = 2;
+                is_grid = 1;
+            } else {
+                av_log(avctx, AV_LOG_ERROR, "No layout or grid specified.\n");
+                return AVERROR(EINVAL);
+            }
+        }
+
+        if (is_grid)
+            sctx->nb_inputs = sctx->nb_grid_rows * sctx->nb_grid_columns;
+
+        if (strcmp(sctx->fillcolor_str, "none") &&
+            av_parse_color(sctx->fillcolor, sctx->fillcolor_str, -1, avctx) >= 0) {
+            sctx->fillcolor_enable = 1;
+        } else {
+            sctx->fillcolor_enable = 0;
+        }
+    }
+
+    for (int i = 0; i < sctx->nb_inputs; i++) {
+        AVFilterPad pad = { 0 };
+
+        pad.type = AVMEDIA_TYPE_VIDEO;
+        pad.name = av_asprintf("input%d", i);
+
+        if (!pad.name)
+            return AVERROR(ENOMEM);
+
+        if ((ret = ff_append_inpad_free_name(avctx, &pad)) < 0)
+            return ret;
+    }
+
+    /* stack region */
+    sctx->rects = av_calloc(sctx->nb_inputs, sizeof(*sctx->rects));
+    if (!sctx->rects)
+        return AVERROR(ENOMEM);
+
+    ff_vaapi_vpp_ctx_init(avctx);
+    vppctx->output_format = AV_PIX_FMT_NONE;
+
+    return 0;
+}
+
+static av_cold void vaapi_stack_uninit(AVFilterContext *avctx)
+{
+    StackVAAPIContext *sctx = avctx->priv;
+
+    ff_framesync_uninit(&sctx->fs);
+    av_freep(&sctx->rects);
+}
+
+static int vaapi_stack_activate(AVFilterContext *avctx)
+{
+    StackVAAPIContext *sctx = avctx->priv;
+    return ff_framesync_activate(&sctx->fs);
+}
+
+static int vaapi_stack_query_formats(AVFilterContext *avctx)
+{
+    static const enum AVPixelFormat pixel_formats[] = {
+        AV_PIX_FMT_VAAPI,
+        AV_PIX_FMT_NONE,
+    };
+
+    return ff_set_common_formats_from_list(avctx, pixel_formats);
+}
+
+static const AVFilterPad vaapi_stack_outputs[] = {
+    {
+        .name          = "default",
+        .type          = AVMEDIA_TYPE_VIDEO,
+        .config_props  = config_output,
+    },
+};
+
+#define STACK_COMMON_OPTS \
+    { "inputs", "Set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 2, UINT16_MAX, .flags = FLAGS },                   \
+    { "shortest", "Force termination when the shortest input terminates", OFFSET(shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
+
+#if CONFIG_HSTACK_VAAPI_FILTER
+
+static const AVOption hstack_vaapi_options[] = {
+    STACK_COMMON_OPTS
+
+    { "height", "Set output height (0 to use the height of input 0)", OFFSET(tile_height), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, FLAGS },
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(hstack_vaapi);
+
+const AVFilter ff_vf_hstack_vaapi = {
+    .name           = "hstack_vaapi",
+    .description    = NULL_IF_CONFIG_SMALL("VA-API hstack."),
+    .priv_size      = sizeof(StackVAAPIContext),
+    .priv_class     = &hstack_vaapi_class,
+    .init           = vaapi_stack_init,
+    .uninit         = vaapi_stack_uninit,
+    .activate       = vaapi_stack_activate,
+    FILTER_QUERY_FUNC(vaapi_stack_query_formats),
+    FILTER_OUTPUTS(vaapi_stack_outputs),
+    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+    .flags          = AVFILTER_FLAG_DYNAMIC_INPUTS,
+};
+
+#endif
+
+#if CONFIG_VSTACK_VAAPI_FILTER
+
+static const AVOption vstack_vaapi_options[] = {
+    STACK_COMMON_OPTS
+
+    { "width",   "Set output width (0 to use the width of input 0)", OFFSET(tile_width), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, FLAGS },
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(vstack_vaapi);
+
+const AVFilter ff_vf_vstack_vaapi = {
+    .name           = "vstack_vaapi",
+    .description    = NULL_IF_CONFIG_SMALL("VA-API vstack."),
+    .priv_size      = sizeof(StackVAAPIContext),
+    .priv_class     = &vstack_vaapi_class,
+    .init           = vaapi_stack_init,
+    .uninit         = vaapi_stack_uninit,
+    .activate       = vaapi_stack_activate,
+    FILTER_QUERY_FUNC(vaapi_stack_query_formats),
+    FILTER_OUTPUTS(vaapi_stack_outputs),
+    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+    .flags          = AVFILTER_FLAG_DYNAMIC_INPUTS,
+};
+
+#endif
+
+#if CONFIG_XSTACK_VAAPI_FILTER
+
+static const AVOption xstack_vaapi_options[] = {
+    STACK_COMMON_OPTS
+
+    { "layout", "Set custom layout", OFFSET(layout), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, .flags = FLAGS },
+    { "grid",   "set fixed size grid layout", OFFSET(nb_grid_columns), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS },
+    { "grid_tile_size",   "set tile size in grid layout", OFFSET(tile_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS },
+    { "fill",   "Set the color for unused pixels", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = FLAGS },
+    { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(xstack_vaapi);
+
+const AVFilter ff_vf_xstack_vaapi = {
+    .name           = "xstack_vaapi",
+    .description    = NULL_IF_CONFIG_SMALL("VA-API xstack."),
+    .priv_size      = sizeof(StackVAAPIContext),
+    .priv_class     = &xstack_vaapi_class,
+    .init           = vaapi_stack_init,
+    .uninit         = vaapi_stack_uninit,
+    .activate       = vaapi_stack_activate,
+    FILTER_OUTPUTS(vaapi_stack_outputs),
+    FILTER_QUERY_FUNC(vaapi_stack_query_formats),
+    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+    .flags          = AVFILTER_FLAG_DYNAMIC_INPUTS,
+};
+
+#endif