libavfilter/vf_deinterlace_vaapi.c - manifest_repos/ffmpeg - Git at Google

 /*
  * 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/common.h"
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"

 #include "avfilter.h"
 #include "formats.h"
 #include "internal.h"
 #include "video.h"
 #include "vaapi_vpp.h"

 #define MAX_REFERENCES 8

 typedef struct DeintVAAPIContext {
     VAAPIVPPContext vpp_ctx; // must be the first field

     int                mode;
     int                field_rate;
     int                auto_enable;

     VAProcFilterCapDeinterlacing
                        deint_caps[VAProcDeinterlacingCount];
     int             nb_deint_caps;
     VAProcPipelineCaps pipeline_caps;

     int                queue_depth;
     int                queue_count;
     AVFrame           *frame_queue[MAX_REFERENCES];
     int                extra_delay_for_timestamps;
 } DeintVAAPIContext;

 static const char *deint_vaapi_mode_name(int mode)
 {
     switch (mode) {
 #define D(name) case VAProcDeinterlacing ## name: return #name
         D(Bob);
         D(Weave);
         D(MotionAdaptive);
         D(MotionCompensated);
 #undef D
     default:
         return "Invalid";
     }
 }

 static void deint_vaapi_pipeline_uninit(AVFilterContext *avctx)
 {
     DeintVAAPIContext *ctx   = avctx->priv;
     int i;

     for (i = 0; i < ctx->queue_count; i++)
         av_frame_free(&ctx->frame_queue[i]);
     ctx->queue_count = 0;

     ff_vaapi_vpp_pipeline_uninit(avctx);
 }

 static int deint_vaapi_build_filter_params(AVFilterContext *avctx)
 {
     VAAPIVPPContext *vpp_ctx = avctx->priv;
     DeintVAAPIContext *ctx   = avctx->priv;
     VAStatus vas;
     VAProcFilterParameterBufferDeinterlacing params;
     int i;

     ctx->nb_deint_caps = VAProcDeinterlacingCount;
     vas = vaQueryVideoProcFilterCaps(vpp_ctx->hwctx->display,
                                      vpp_ctx->va_context,
                                      VAProcFilterDeinterlacing,
                                      &ctx->deint_caps,
                                      &ctx->nb_deint_caps);
     if (vas != VA_STATUS_SUCCESS) {
         av_log(avctx, AV_LOG_ERROR, "Failed to query deinterlacing "
                "caps: %d (%s).\n", vas, vaErrorStr(vas));
         return AVERROR(EIO);
     }

     if (ctx->mode == VAProcDeinterlacingNone) {
         for (i = 0; i < ctx->nb_deint_caps; i++) {
             if (ctx->deint_caps[i].type > ctx->mode)
                 ctx->mode = ctx->deint_caps[i].type;
         }
         av_log(avctx, AV_LOG_VERBOSE, "Picking %d (%s) as default "
                "deinterlacing mode.\n", ctx->mode,
                deint_vaapi_mode_name(ctx->mode));
     } else {
         for (i = 0; i < ctx->nb_deint_caps; i++) {
             if (ctx->deint_caps[i].type == ctx->mode)
                 break;
         }
         if (i >= ctx->nb_deint_caps) {
             av_log(avctx, AV_LOG_ERROR, "Deinterlacing mode %d (%s) is "
                    "not supported.\n", ctx->mode,
                    deint_vaapi_mode_name(ctx->mode));
             return AVERROR(EINVAL);
         }
     }

     params.type      = VAProcFilterDeinterlacing;
     params.algorithm = ctx->mode;
     params.flags     = 0;

     vas = ff_vaapi_vpp_make_param_buffers(avctx,
                                           VAProcFilterParameterBufferType,
                                           &params,
                                           sizeof(params),
                                           1);
     if (vas)
         return vas;

     vas = vaQueryVideoProcPipelineCaps(vpp_ctx->hwctx->display,
                                        vpp_ctx->va_context,
                                        &vpp_ctx->filter_buffers[0], 1,
                                        &ctx->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);
     }

     ctx->extra_delay_for_timestamps = ctx->field_rate == 2 &&
         ctx->pipeline_caps.num_backward_references == 0;

     ctx->queue_depth = ctx->pipeline_caps.num_backward_references +
                        ctx->pipeline_caps.num_forward_references +
                        ctx->extra_delay_for_timestamps + 1;
     if (ctx->queue_depth > MAX_REFERENCES) {
         av_log(avctx, AV_LOG_ERROR, "Pipeline requires too many "
                "references (%u forward, %u back).\n",
                ctx->pipeline_caps.num_forward_references,
                ctx->pipeline_caps.num_backward_references);
         return AVERROR(ENOSYS);
     }

     return 0;
 }

 static int deint_vaapi_config_output(AVFilterLink *outlink)
 {
     AVFilterLink *inlink = outlink->src->inputs[0];
     AVFilterContext *avctx = outlink->src;
     DeintVAAPIContext *ctx = avctx->priv;
     int err;

     err = ff_vaapi_vpp_config_output(outlink);
     if (err < 0)
         return err;
     outlink->time_base  = av_mul_q(inlink->time_base,
                                    (AVRational) { 1, ctx->field_rate });
     outlink->frame_rate = av_mul_q(inlink->frame_rate,
                                    (AVRational) { ctx->field_rate, 1 });

     return 0;
 }

 static int deint_vaapi_filter_frame(AVFilterLink *inlink, AVFrame *input_frame)
 {
     AVFilterContext   *avctx = inlink->dst;
     AVFilterLink    *outlink = avctx->outputs[0];
     VAAPIVPPContext *vpp_ctx = avctx->priv;
     DeintVAAPIContext *ctx   = avctx->priv;
     AVFrame *output_frame    = NULL;
     VASurfaceID input_surface;
     VASurfaceID backward_references[MAX_REFERENCES];
     VASurfaceID forward_references[MAX_REFERENCES];
     VAProcPipelineParameterBuffer params;
     VAProcFilterParameterBufferDeinterlacing *filter_params;
     VAStatus vas;
     void *filter_params_addr = NULL;
     int err, i, field, current_frame_index;

     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 (ctx->queue_count < ctx->queue_depth) {
         ctx->frame_queue[ctx->queue_count++] = input_frame;
         if (ctx->queue_count < ctx->queue_depth) {
             // Need more reference surfaces before we can continue.
             return 0;
         }
     } else {
         av_frame_free(&ctx->frame_queue[0]);
         for (i = 0; i + 1 < ctx->queue_count; i++)
             ctx->frame_queue[i] = ctx->frame_queue[i + 1];
         ctx->frame_queue[i] = input_frame;
     }

     current_frame_index = ctx->pipeline_caps.num_forward_references;

     input_frame = ctx->frame_queue[current_frame_index];
     input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
     for (i = 0; i < ctx->pipeline_caps.num_forward_references; i++)
         forward_references[i] = (VASurfaceID)(uintptr_t)
             ctx->frame_queue[current_frame_index - i - 1]->data[3];
     for (i = 0; i < ctx->pipeline_caps.num_backward_references; i++)
         backward_references[i] = (VASurfaceID)(uintptr_t)
             ctx->frame_queue[current_frame_index + i + 1]->data[3];

     av_log(avctx, AV_LOG_DEBUG, "Using surface %#x for "
            "deinterlace input.\n", input_surface);
     av_log(avctx, AV_LOG_DEBUG, "Backward references:");
     for (i = 0; i < ctx->pipeline_caps.num_backward_references; i++)
         av_log(avctx, AV_LOG_DEBUG, " %#x", backward_references[i]);
     av_log(avctx, AV_LOG_DEBUG, "\n");
     av_log(avctx, AV_LOG_DEBUG, "Forward  references:");
     for (i = 0; i < ctx->pipeline_caps.num_forward_references; i++)
         av_log(avctx, AV_LOG_DEBUG, " %#x", forward_references[i]);
     av_log(avctx, AV_LOG_DEBUG, "\n");

     for (field = 0; field < ctx->field_rate; field++) {
         output_frame = ff_get_video_buffer(outlink, vpp_ctx->output_width,
                                            vpp_ctx->output_height);
         if (!output_frame) {
             err = AVERROR(ENOMEM);
             goto fail;
         }

         err = av_frame_copy_props(output_frame, input_frame);
         if (err < 0)
             goto fail;

         err = ff_vaapi_vpp_init_params(avctx, &params,
                                        input_frame, output_frame);
         if (err < 0)
             goto fail;

         if (!ctx->auto_enable || input_frame->interlaced_frame) {
             vas = vaMapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0],
                               &filter_params_addr);
             if (vas != VA_STATUS_SUCCESS) {
                 av_log(avctx, AV_LOG_ERROR, "Failed to map filter parameter "
                        "buffer: %d (%s).\n", vas, vaErrorStr(vas));
                 err = AVERROR(EIO);
                 goto fail;
             }
             filter_params = filter_params_addr;
             filter_params->flags = 0;
             if (input_frame->top_field_first) {
                 filter_params->flags |= field ? VA_DEINTERLACING_BOTTOM_FIELD : 0;
             } else {
                 filter_params->flags |= VA_DEINTERLACING_BOTTOM_FIELD_FIRST;
                 filter_params->flags |= field ? 0 : VA_DEINTERLACING_BOTTOM_FIELD;
             }
             filter_params_addr = NULL;
             vas = vaUnmapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0]);
             if (vas != VA_STATUS_SUCCESS)
                 av_log(avctx, AV_LOG_ERROR, "Failed to unmap filter parameter "
                        "buffer: %d (%s).\n", vas, vaErrorStr(vas));

             params.filters     = &vpp_ctx->filter_buffers[0];
             params.num_filters = 1;

             params.forward_references = forward_references;
             params.num_forward_references =
                 ctx->pipeline_caps.num_forward_references;
             params.backward_references = backward_references;
             params.num_backward_references =
                 ctx->pipeline_caps.num_backward_references;

         } else {
             params.filters     = NULL;
             params.num_filters = 0;
         }

         err = ff_vaapi_vpp_render_picture(avctx, &params, output_frame);
         if (err < 0)
             goto fail;

         if (ctx->field_rate == 2) {
             if (field == 0)
                 output_frame->pts = 2 * input_frame->pts;
             else
                 output_frame->pts = input_frame->pts +
                     ctx->frame_queue[current_frame_index + 1]->pts;
         }
         output_frame->interlaced_frame = 0;

         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);

         err = ff_filter_frame(outlink, output_frame);
         if (err < 0)
             break;
     }

     return err;

 fail:
     if (filter_params_addr)
         vaUnmapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0]);
     av_frame_free(&output_frame);
     return err;
 }

 static av_cold int deint_vaapi_init(AVFilterContext *avctx)
 {
     VAAPIVPPContext *vpp_ctx = avctx->priv;

     ff_vaapi_vpp_ctx_init(avctx);
     vpp_ctx->pipeline_uninit     = deint_vaapi_pipeline_uninit;
     vpp_ctx->build_filter_params = deint_vaapi_build_filter_params;
     vpp_ctx->output_format       = AV_PIX_FMT_NONE;

     return 0;
 }

 #define OFFSET(x) offsetof(DeintVAAPIContext, x)
 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
 static const AVOption deint_vaapi_options[] = {
     { "mode", "Deinterlacing mode",
       OFFSET(mode), AV_OPT_TYPE_INT, { .i64 = VAProcDeinterlacingNone },
       VAProcDeinterlacingNone, VAProcDeinterlacingCount - 1, FLAGS, "mode" },
     { "default", "Use the highest-numbered (and therefore possibly most advanced) deinterlacing algorithm",
       0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingNone }, 0, 0, FLAGS, "mode" },
     { "bob", "Use the bob deinterlacing algorithm",
       0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingBob }, 0, 0, FLAGS, "mode" },
     { "weave", "Use the weave deinterlacing algorithm",
       0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingWeave }, 0, 0, FLAGS,  "mode" },
     { "motion_adaptive", "Use the motion adaptive deinterlacing algorithm",
       0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingMotionAdaptive }, 0, 0, FLAGS, "mode" },
     { "motion_compensated", "Use the motion compensated deinterlacing algorithm",
       0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingMotionCompensated }, 0, 0, FLAGS, "mode" },

     { "rate", "Generate output at frame rate or field rate",
       OFFSET(field_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 2, FLAGS, "rate" },
     { "frame", "Output at frame rate (one frame of output for each field-pair)",
       0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "rate" },
     { "field", "Output at field rate (one frame of output for each field)",
       0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, FLAGS, "rate" },

     { "auto", "Only deinterlace fields, passing frames through unchanged",
       OFFSET(auto_enable), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

     { NULL },
 };

 static const AVClass deint_vaapi_class = {
     .class_name = "deinterlace_vaapi",
     .item_name  = av_default_item_name,
     .option     = deint_vaapi_options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 static const AVFilterPad deint_vaapi_inputs[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_VIDEO,
         .filter_frame = &deint_vaapi_filter_frame,
         .config_props = &ff_vaapi_vpp_config_input,
     },
     { NULL }
 };

 static const AVFilterPad deint_vaapi_outputs[] = {
     {
         .name = "default",
         .type = AVMEDIA_TYPE_VIDEO,
         .config_props = &deint_vaapi_config_output,
     },
     { NULL }
 };

 AVFilter ff_vf_deinterlace_vaapi = {
     .name           = "deinterlace_vaapi",
     .description    = NULL_IF_CONFIG_SMALL("Deinterlacing of VAAPI surfaces"),
     .priv_size      = sizeof(DeintVAAPIContext),
     .init           = &deint_vaapi_init,
     .uninit         = &ff_vaapi_vpp_ctx_uninit,
     .query_formats  = &ff_vaapi_vpp_query_formats,
     .inputs         = deint_vaapi_inputs,
     .outputs        = deint_vaapi_outputs,
     .priv_class     = &deint_vaapi_class,
     .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
 };
	/*
	* 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/common.h"
	#include "libavutil/mem.h"
	#include "libavutil/opt.h"
	#include "libavutil/pixdesc.h"

	#include "avfilter.h"
	#include "formats.h"
	#include "internal.h"
	#include "video.h"
	#include "vaapi_vpp.h"

	#define MAX_REFERENCES 8

	typedef struct DeintVAAPIContext {
	VAAPIVPPContext vpp_ctx; // must be the first field

	int mode;
	int field_rate;
	int auto_enable;

	VAProcFilterCapDeinterlacing
	deint_caps[VAProcDeinterlacingCount];
	int nb_deint_caps;
	VAProcPipelineCaps pipeline_caps;

	int queue_depth;
	int queue_count;
	AVFrame *frame_queue[MAX_REFERENCES];
	int extra_delay_for_timestamps;
	} DeintVAAPIContext;

	static const char *deint_vaapi_mode_name(int mode)
	{
	switch (mode) {
	#define D(name) case VAProcDeinterlacing ## name: return #name
	D(Bob);
	D(Weave);
	D(MotionAdaptive);
	D(MotionCompensated);
	#undef D
	default:
	return "Invalid";
	}
	}

	static void deint_vaapi_pipeline_uninit(AVFilterContext *avctx)
	{
	DeintVAAPIContext *ctx = avctx->priv;
	int i;

	for (i = 0; i < ctx->queue_count; i++)
	av_frame_free(&ctx->frame_queue[i]);
	ctx->queue_count = 0;

	ff_vaapi_vpp_pipeline_uninit(avctx);
	}

	static int deint_vaapi_build_filter_params(AVFilterContext *avctx)
	{
	VAAPIVPPContext *vpp_ctx = avctx->priv;
	DeintVAAPIContext *ctx = avctx->priv;
	VAStatus vas;
	VAProcFilterParameterBufferDeinterlacing params;
	int i;

	ctx->nb_deint_caps = VAProcDeinterlacingCount;
	vas = vaQueryVideoProcFilterCaps(vpp_ctx->hwctx->display,
	vpp_ctx->va_context,
	VAProcFilterDeinterlacing,
	&ctx->deint_caps,
	&ctx->nb_deint_caps);
	if (vas != VA_STATUS_SUCCESS) {
	av_log(avctx, AV_LOG_ERROR, "Failed to query deinterlacing "
	"caps: %d (%s).\n", vas, vaErrorStr(vas));
	return AVERROR(EIO);
	}

	if (ctx->mode == VAProcDeinterlacingNone) {
	for (i = 0; i < ctx->nb_deint_caps; i++) {
	if (ctx->deint_caps[i].type > ctx->mode)
	ctx->mode = ctx->deint_caps[i].type;
	}
	av_log(avctx, AV_LOG_VERBOSE, "Picking %d (%s) as default "
	"deinterlacing mode.\n", ctx->mode,
	deint_vaapi_mode_name(ctx->mode));
	} else {
	for (i = 0; i < ctx->nb_deint_caps; i++) {
	if (ctx->deint_caps[i].type == ctx->mode)
	break;
	}
	if (i >= ctx->nb_deint_caps) {
	av_log(avctx, AV_LOG_ERROR, "Deinterlacing mode %d (%s) is "
	"not supported.\n", ctx->mode,
	deint_vaapi_mode_name(ctx->mode));
	return AVERROR(EINVAL);
	}
	}

	params.type = VAProcFilterDeinterlacing;
	params.algorithm = ctx->mode;
	params.flags = 0;

	vas = ff_vaapi_vpp_make_param_buffers(avctx,
	VAProcFilterParameterBufferType,
	&params,
	sizeof(params),
	1);
	if (vas)
	return vas;

	vas = vaQueryVideoProcPipelineCaps(vpp_ctx->hwctx->display,
	vpp_ctx->va_context,
	&vpp_ctx->filter_buffers[0], 1,
	&ctx->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);
	}

	ctx->extra_delay_for_timestamps = ctx->field_rate == 2 &&
	ctx->pipeline_caps.num_backward_references == 0;

	ctx->queue_depth = ctx->pipeline_caps.num_backward_references +
	ctx->pipeline_caps.num_forward_references +
	ctx->extra_delay_for_timestamps + 1;
	if (ctx->queue_depth > MAX_REFERENCES) {
	av_log(avctx, AV_LOG_ERROR, "Pipeline requires too many "
	"references (%u forward, %u back).\n",
	ctx->pipeline_caps.num_forward_references,
	ctx->pipeline_caps.num_backward_references);
	return AVERROR(ENOSYS);
	}

	return 0;
	}

	static int deint_vaapi_config_output(AVFilterLink *outlink)
	{
	AVFilterLink *inlink = outlink->src->inputs[0];
	AVFilterContext *avctx = outlink->src;
	DeintVAAPIContext *ctx = avctx->priv;
	int err;

	err = ff_vaapi_vpp_config_output(outlink);
	if (err < 0)
	return err;
	outlink->time_base = av_mul_q(inlink->time_base,
	(AVRational) { 1, ctx->field_rate });
	outlink->frame_rate = av_mul_q(inlink->frame_rate,
	(AVRational) { ctx->field_rate, 1 });

	return 0;
	}

	static int deint_vaapi_filter_frame(AVFilterLink inlink, AVFrame input_frame)
	{
	AVFilterContext *avctx = inlink->dst;
	AVFilterLink *outlink = avctx->outputs[0];
	VAAPIVPPContext *vpp_ctx = avctx->priv;
	DeintVAAPIContext *ctx = avctx->priv;
	AVFrame *output_frame = NULL;
	VASurfaceID input_surface;
	VASurfaceID backward_references[MAX_REFERENCES];
	VASurfaceID forward_references[MAX_REFERENCES];
	VAProcPipelineParameterBuffer params;
	VAProcFilterParameterBufferDeinterlacing *filter_params;
	VAStatus vas;
	void *filter_params_addr = NULL;
	int err, i, field, current_frame_index;

	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 (ctx->queue_count < ctx->queue_depth) {
	ctx->frame_queue[ctx->queue_count++] = input_frame;
	if (ctx->queue_count < ctx->queue_depth) {
	// Need more reference surfaces before we can continue.
	return 0;
	}
	} else {
	av_frame_free(&ctx->frame_queue[0]);
	for (i = 0; i + 1 < ctx->queue_count; i++)
	ctx->frame_queue[i] = ctx->frame_queue[i + 1];
	ctx->frame_queue[i] = input_frame;
	}

	current_frame_index = ctx->pipeline_caps.num_forward_references;

	input_frame = ctx->frame_queue[current_frame_index];
	input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
	for (i = 0; i < ctx->pipeline_caps.num_forward_references; i++)
	forward_references[i] = (VASurfaceID)(uintptr_t)
	ctx->frame_queue[current_frame_index - i - 1]->data[3];
	for (i = 0; i < ctx->pipeline_caps.num_backward_references; i++)
	backward_references[i] = (VASurfaceID)(uintptr_t)
	ctx->frame_queue[current_frame_index + i + 1]->data[3];

	av_log(avctx, AV_LOG_DEBUG, "Using surface %#x for "
	"deinterlace input.\n", input_surface);
	av_log(avctx, AV_LOG_DEBUG, "Backward references:");
	for (i = 0; i < ctx->pipeline_caps.num_backward_references; i++)
	av_log(avctx, AV_LOG_DEBUG, " %#x", backward_references[i]);
	av_log(avctx, AV_LOG_DEBUG, "\n");
	av_log(avctx, AV_LOG_DEBUG, "Forward references:");
	for (i = 0; i < ctx->pipeline_caps.num_forward_references; i++)
	av_log(avctx, AV_LOG_DEBUG, " %#x", forward_references[i]);
	av_log(avctx, AV_LOG_DEBUG, "\n");

	for (field = 0; field < ctx->field_rate; field++) {
	output_frame = ff_get_video_buffer(outlink, vpp_ctx->output_width,
	vpp_ctx->output_height);
	if (!output_frame) {
	err = AVERROR(ENOMEM);
	goto fail;
	}

	err = av_frame_copy_props(output_frame, input_frame);
	if (err < 0)
	goto fail;

	err = ff_vaapi_vpp_init_params(avctx, &params,
	input_frame, output_frame);
	if (err < 0)
	goto fail;

	if (!ctx->auto_enable \|\| input_frame->interlaced_frame) {
	vas = vaMapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0],
	&filter_params_addr);
	if (vas != VA_STATUS_SUCCESS) {
	av_log(avctx, AV_LOG_ERROR, "Failed to map filter parameter "
	"buffer: %d (%s).\n", vas, vaErrorStr(vas));
	err = AVERROR(EIO);
	goto fail;
	}
	filter_params = filter_params_addr;
	filter_params->flags = 0;
	if (input_frame->top_field_first) {
	filter_params->flags \|= field ? VA_DEINTERLACING_BOTTOM_FIELD : 0;
	} else {
	filter_params->flags \|= VA_DEINTERLACING_BOTTOM_FIELD_FIRST;
	filter_params->flags \|= field ? 0 : VA_DEINTERLACING_BOTTOM_FIELD;
	}
	filter_params_addr = NULL;
	vas = vaUnmapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0]);
	if (vas != VA_STATUS_SUCCESS)
	av_log(avctx, AV_LOG_ERROR, "Failed to unmap filter parameter "
	"buffer: %d (%s).\n", vas, vaErrorStr(vas));

	params.filters = &vpp_ctx->filter_buffers[0];
	params.num_filters = 1;

	params.forward_references = forward_references;
	params.num_forward_references =
	ctx->pipeline_caps.num_forward_references;
	params.backward_references = backward_references;
	params.num_backward_references =
	ctx->pipeline_caps.num_backward_references;

	} else {
	params.filters = NULL;
	params.num_filters = 0;
	}

	err = ff_vaapi_vpp_render_picture(avctx, &params, output_frame);
	if (err < 0)
	goto fail;

	if (ctx->field_rate == 2) {
	if (field == 0)
	output_frame->pts = 2 * input_frame->pts;
	else
	output_frame->pts = input_frame->pts +
	ctx->frame_queue[current_frame_index + 1]->pts;
	}
	output_frame->interlaced_frame = 0;

	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);

	err = ff_filter_frame(outlink, output_frame);
	if (err < 0)
	break;
	}

	return err;

	fail:
	if (filter_params_addr)
	vaUnmapBuffer(vpp_ctx->hwctx->display, vpp_ctx->filter_buffers[0]);
	av_frame_free(&output_frame);
	return err;
	}

	static av_cold int deint_vaapi_init(AVFilterContext *avctx)
	{
	VAAPIVPPContext *vpp_ctx = avctx->priv;

	ff_vaapi_vpp_ctx_init(avctx);
	vpp_ctx->pipeline_uninit = deint_vaapi_pipeline_uninit;
	vpp_ctx->build_filter_params = deint_vaapi_build_filter_params;
	vpp_ctx->output_format = AV_PIX_FMT_NONE;

	return 0;
	}

	#define OFFSET(x) offsetof(DeintVAAPIContext, x)
	#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM)
	static const AVOption deint_vaapi_options[] = {
	{ "mode", "Deinterlacing mode",
	OFFSET(mode), AV_OPT_TYPE_INT, { .i64 = VAProcDeinterlacingNone },
	VAProcDeinterlacingNone, VAProcDeinterlacingCount - 1, FLAGS, "mode" },
	{ "default", "Use the highest-numbered (and therefore possibly most advanced) deinterlacing algorithm",
	0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingNone }, 0, 0, FLAGS, "mode" },
	{ "bob", "Use the bob deinterlacing algorithm",
	0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingBob }, 0, 0, FLAGS, "mode" },
	{ "weave", "Use the weave deinterlacing algorithm",
	0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingWeave }, 0, 0, FLAGS, "mode" },
	{ "motion_adaptive", "Use the motion adaptive deinterlacing algorithm",
	0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingMotionAdaptive }, 0, 0, FLAGS, "mode" },
	{ "motion_compensated", "Use the motion compensated deinterlacing algorithm",
	0, AV_OPT_TYPE_CONST, { .i64 = VAProcDeinterlacingMotionCompensated }, 0, 0, FLAGS, "mode" },

	{ "rate", "Generate output at frame rate or field rate",
	OFFSET(field_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 2, FLAGS, "rate" },
	{ "frame", "Output at frame rate (one frame of output for each field-pair)",
	0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "rate" },
	{ "field", "Output at field rate (one frame of output for each field)",
	0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, FLAGS, "rate" },

	{ "auto", "Only deinterlace fields, passing frames through unchanged",
	OFFSET(auto_enable), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

	{ NULL },
	};

	static const AVClass deint_vaapi_class = {
	.class_name = "deinterlace_vaapi",
	.item_name = av_default_item_name,
	.option = deint_vaapi_options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	static const AVFilterPad deint_vaapi_inputs[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	.filter_frame = &deint_vaapi_filter_frame,
	.config_props = &ff_vaapi_vpp_config_input,
	},
	{ NULL }
	};

	static const AVFilterPad deint_vaapi_outputs[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	.config_props = &deint_vaapi_config_output,
	},
	{ NULL }
	};

	AVFilter ff_vf_deinterlace_vaapi = {
	.name = "deinterlace_vaapi",
	.description = NULL_IF_CONFIG_SMALL("Deinterlacing of VAAPI surfaces"),
	.priv_size = sizeof(DeintVAAPIContext),
	.init = &deint_vaapi_init,
	.uninit = &ff_vaapi_vpp_ctx_uninit,
	.query_formats = &ff_vaapi_vpp_query_formats,
	.inputs = deint_vaapi_inputs,
	.outputs = deint_vaapi_outputs,
	.priv_class = &deint_vaapi_class,
	.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
	};