[FFmpeg-devel] [PATCH v4 18/21] lavfi/deinterlace_qsv: re-use VPPContext for deinterlace_qsv filter

Haihao Xiang haihao.xiang at intel.com
Thu Jul 29 08:25:06 EEST 2021


All features are implemented in vpp_qsv filter now, so deinterlace_qsv
can be taken as a specical case of vpp_qsv filter, we re-use VPPContext
with a different option array and pix formats for deinterlace_qsv filter

A new option -rate is used to control the output frame rate, by default
it will output frame for each field
---
 libavfilter/Makefile             |   2 +-
 libavfilter/vf_deinterlace_qsv.c | 179 -------------------------------
 libavfilter/vf_vpp_qsv.c         |  34 +++++-
 3 files changed, 34 insertions(+), 181 deletions(-)
 delete mode 100644 libavfilter/vf_deinterlace_qsv.c

diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 760099ba2c..dafd0c610c 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -230,7 +230,7 @@ OBJS-$(CONFIG_DECONVOLVE_FILTER)             += vf_convolve.o framesync.o
 OBJS-$(CONFIG_DEDOT_FILTER)                  += vf_dedot.o
 OBJS-$(CONFIG_DEFLATE_FILTER)                += vf_neighbor.o
 OBJS-$(CONFIG_DEFLICKER_FILTER)              += vf_deflicker.o
-OBJS-$(CONFIG_DEINTERLACE_QSV_FILTER)        += vf_deinterlace_qsv.o
+OBJS-$(CONFIG_DEINTERLACE_QSV_FILTER)        += vf_vpp_qsv.o
 OBJS-$(CONFIG_DEINTERLACE_VAAPI_FILTER)      += vf_deinterlace_vaapi.o vaapi_vpp.o
 OBJS-$(CONFIG_DEJUDDER_FILTER)               += vf_dejudder.o
 OBJS-$(CONFIG_DELOGO_FILTER)                 += vf_delogo.o
diff --git a/libavfilter/vf_deinterlace_qsv.c b/libavfilter/vf_deinterlace_qsv.c
deleted file mode 100644
index 50ff553e6a..0000000000
--- a/libavfilter/vf_deinterlace_qsv.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * 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
- * deinterlace video filter - QSV
- */
-
-#include <mfx/mfxvideo.h>
-
-#include <stdio.h>
-#include <string.h>
-
-#include "libavutil/avstring.h"
-#include "libavutil/common.h"
-#include "libavutil/hwcontext.h"
-#include "libavutil/hwcontext_qsv.h"
-#include "libavutil/internal.h"
-#include "libavutil/mathematics.h"
-#include "libavutil/opt.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/time.h"
-#include "libavfilter/qsvvpp.h"
-
-#include "avfilter.h"
-#include "formats.h"
-#include "internal.h"
-#include "video.h"
-
-typedef struct QSVDeintContext {
-    QSVVPPContext qsv;
-
-    mfxExtVPPDeinterlacing deint_conf;
-
-    /* option for Deinterlacing algorithm to be used */
-    int mode;
-} QSVDeintContext;
-
-static av_cold void qsvdeint_uninit(AVFilterContext *ctx)
-{
-    ff_qsvvpp_close(ctx);
-}
-
-static int qsvdeint_query_formats(AVFilterContext *ctx)
-{
-    static const enum AVPixelFormat pixel_formats[] = {
-        AV_PIX_FMT_QSV, AV_PIX_FMT_NONE,
-    };
-    AVFilterFormats *pix_fmts  = ff_make_format_list(pixel_formats);
-    int ret;
-
-    if ((ret = ff_set_common_formats(ctx, pix_fmts)) < 0)
-        return ret;
-
-    return 0;
-}
-
-static int qsvdeint_config_props(AVFilterLink *outlink)
-{
-    AVFilterContext *ctx = outlink->src;
-    AVFilterLink *inlink = ctx->inputs[0];
-    QSVDeintContext   *s = ctx->priv;
-    QSVVPPParam    param = { NULL };
-    mfxExtBuffer *ext_buf[1];
-    enum AVPixelFormat in_format;
-
-    qsvdeint_uninit(ctx);
-
-    outlink->w          = inlink->w;
-    outlink->h          = inlink->h;
-    outlink->frame_rate = av_mul_q(inlink->frame_rate,
-                                   (AVRational){ 2, 1 });
-    outlink->time_base  = av_mul_q(inlink->time_base,
-                                   (AVRational){ 1, 2 });
-
-    if (inlink->format == AV_PIX_FMT_QSV) {
-        if (!inlink->hw_frames_ctx || !inlink->hw_frames_ctx->data)
-            return AVERROR(EINVAL);
-        else
-            in_format = ((AVHWFramesContext*)inlink->hw_frames_ctx->data)->sw_format;
-    } else
-        in_format = inlink->format;
-
-    param.out_sw_format = in_format;
-    param.ext_buf       = ext_buf;
-
-    memset(&s->deint_conf, 0, sizeof(mfxExtVPPDeinterlacing));
-    s->deint_conf.Header.BufferId      = MFX_EXTBUFF_VPP_DEINTERLACING;
-    s->deint_conf.Header.BufferSz      = sizeof(s->deint_conf);
-    s->deint_conf.Mode                 = s->mode;
-    param.ext_buf[param.num_ext_buf++] = (mfxExtBuffer*)&s->deint_conf;
-
-    return ff_qsvvpp_init(ctx, &param);
-}
-
-static int qsvdeint_filter_frame(AVFilterLink *link, AVFrame *in)
-{
-    AVFilterContext  *ctx = link->dst;
-    QSVVPPContext    *qsv = ctx->priv;
-    int               ret = 0;
-
-    ret = ff_qsvvpp_filter_frame(qsv, link, in);
-    av_frame_free(&in);
-
-    return ret;
-}
-
-static int qsvdeint_request_frame(AVFilterLink *outlink)
-{
-    AVFilterContext *ctx = outlink->src;
-
-    return ff_request_frame(ctx->inputs[0]);
-}
-
-#define OFFSET(x) offsetof(QSVDeintContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
-static const AVOption options[] = {
-    { "mode", "set deinterlace mode", OFFSET(mode),   AV_OPT_TYPE_INT, {.i64 = MFX_DEINTERLACING_ADVANCED}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
-    { "bob",   "bob algorithm",                  0, AV_OPT_TYPE_CONST,      {.i64 = MFX_DEINTERLACING_BOB}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
-    { "advanced", "Motion adaptive algorithm",   0, AV_OPT_TYPE_CONST, {.i64 = MFX_DEINTERLACING_ADVANCED}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
-    { NULL },
-};
-
-static const AVClass qsvdeint_class = {
-    .class_name = "deinterlace_qsv",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-static const AVFilterPad qsvdeint_inputs[] = {
-    {
-        .name         = "default",
-        .type         = AVMEDIA_TYPE_VIDEO,
-        .filter_frame = qsvdeint_filter_frame,
-    },
-    { NULL }
-};
-
-static const AVFilterPad qsvdeint_outputs[] = {
-    {
-        .name          = "default",
-        .type          = AVMEDIA_TYPE_VIDEO,
-        .config_props  = qsvdeint_config_props,
-        .request_frame = qsvdeint_request_frame,
-    },
-    { NULL }
-};
-
-const AVFilter ff_vf_deinterlace_qsv = {
-    .name      = "deinterlace_qsv",
-    .description = NULL_IF_CONFIG_SMALL("QuickSync video deinterlacing"),
-
-    .uninit        = qsvdeint_uninit,
-    .query_formats = qsvdeint_query_formats,
-
-    .priv_size = sizeof(QSVDeintContext),
-    .priv_class = &qsvdeint_class,
-
-    .inputs    = qsvdeint_inputs,
-    .outputs   = qsvdeint_outputs,
-
-    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
-};
diff --git a/libavfilter/vf_vpp_qsv.c b/libavfilter/vf_vpp_qsv.c
index 704db8fdaf..59bf83d7af 100644
--- a/libavfilter/vf_vpp_qsv.c
+++ b/libavfilter/vf_vpp_qsv.c
@@ -102,6 +102,7 @@ typedef struct VPPContext{
     char *output_format_str;
 
     int scaling_mode;
+    int field_rate;
 } VPPContext;
 
 static const char *const var_names[] = {
@@ -226,6 +227,7 @@ static av_cold int vpp_preinit(AVFilterContext *ctx)
     vpp->saturation = 1.0;
     vpp->contrast = 1.0;
     vpp->transpose = -1;
+    vpp->field_rate = 1;
 
     return 0;
 }
@@ -257,7 +259,10 @@ static int config_input(AVFilterLink *inlink)
     if (vpp->framerate.den == 0 || vpp->framerate.num == 0)
         vpp->framerate = inlink->frame_rate;
 
-    if (av_cmp_q(vpp->framerate, inlink->frame_rate))
+    if (vpp->field_rate == 2)
+        vpp->framerate = av_mul_q(inlink->frame_rate,
+                                  (AVRational){ 2, 1 });
+    else if (av_cmp_q(vpp->framerate, inlink->frame_rate))
         vpp->use_frc = 1;
 
     ret = eval_expr(ctx);
@@ -701,3 +706,30 @@ static const AVOption qsvscale_options[] = {
 };
 
 DEFINE_QSV_FILTER(qsvscale, scale, "scaling and format conversion")
+
+static const AVOption qsvdeint_options[] = {
+    { "mode", "set deinterlace mode", OFFSET(deinterlace),   AV_OPT_TYPE_INT, {.i64 = MFX_DEINTERLACING_ADVANCED}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
+    { "bob",   "bob algorithm",                  0, AV_OPT_TYPE_CONST,      {.i64 = MFX_DEINTERLACING_BOB}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
+    { "advanced", "Motion adaptive algorithm",   0, AV_OPT_TYPE_CONST, {.i64 = MFX_DEINTERLACING_ADVANCED}, MFX_DEINTERLACING_BOB, MFX_DEINTERLACING_ADVANCED, FLAGS, "mode"},
+
+    { "rate", "Generate output at frame rate or field rate",
+      OFFSET(field_rate), AV_OPT_TYPE_INT, { .i64 = 2 }, 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" },
+
+    { NULL },
+};
+
+static int qsvdeint_query_formats(AVFilterContext *ctx)
+{
+    static const enum AVPixelFormat pixel_formats[] = {
+        AV_PIX_FMT_QSV, AV_PIX_FMT_NONE,
+    };
+    AVFilterFormats *pix_fmts  = ff_make_format_list(pixel_formats);
+
+    return ff_set_common_formats(ctx, pix_fmts);
+}
+
+DEFINE_QSV_FILTER(qsvdeint, deinterlace, "deinterlacing")
\ No newline at end of file
-- 
2.17.1



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