lavf/vf_deinterlace_qsv: Enable the qsv deinterlace vpp

The current qsv deinterlace module does not work at all because MSDK needs user to pass
extra parameters to enable hint functions,such as denoise,deinterlace,composition and so on.

Usage:-hwaccel qsv -r 25 -c:v h264_qsv -i in -vf deinterlace_qsv=bob -b 2M
      -maxrate 3M -c:v h264_qsv -y out.h264
Signed-off-by: ChaoX A Liu <chaox.a.liu@gmail.com>
Signed-off-by: Zhengxu Huang <zhengxu.maxwell@gmail.com>
Signed-off-by: Andrew Zhang <huazh407@gmail.com>
Change-Id: I9e7ddcf884f2788c2820f6c98affacfb9d8f3287
Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>

libavfilter/vf_deinterlace_qsv.c

@@ -68,7 +68,9 @@ typedef struct QSVDeintContext {
     int             nb_surface_ptrs;
 
     mfxExtOpaqueSurfaceAlloc opaque_alloc;
-    mfxExtBuffer            *ext_buffers[1];
+    mfxExtVPPDeinterlacing   deint_conf;
+    mfxExtBuffer            *ext_buffers[2];
+    int                      num_ext_buffers;
 
     QSVFrame *work_frames;
 
@@ -76,6 +78,9 @@ typedef struct QSVDeintContext {
 
     int got_output_frame;
     int eof;
+
+    /* option for Deinterlacing algorithm to be used */
+    int mode;
 } QSVDeintContext;
 
 static void qsvdeint_uninit(AVFilterContext *ctx)
@@ -211,6 +216,12 @@ static int init_out_session(AVFilterContext *ctx)
 
     memset(&par, 0, sizeof(par));
 
+    s->deint_conf.Header.BufferId = MFX_EXTBUFF_VPP_DEINTERLACING;
+    s->deint_conf.Header.BufferSz = sizeof(s->deint_conf);
+    s->deint_conf.Mode = s->mode;
+
+    s->ext_buffers[s->num_ext_buffers++] = (mfxExtBuffer *)&s->deint_conf;
+
     if (opaque) {
         s->surface_ptrs = av_mallocz_array(hw_frames_hwctx->nb_surfaces,
                                            sizeof(*s->surface_ptrs));
@@ -229,10 +240,7 @@ static int init_out_session(AVFilterContext *ctx)
         s->opaque_alloc.Header.BufferId = MFX_EXTBUFF_OPAQUE_SURFACE_ALLOCATION;
         s->opaque_alloc.Header.BufferSz = sizeof(s->opaque_alloc);
 
-        s->ext_buffers[0] = (mfxExtBuffer*)&s->opaque_alloc;
-
-        par.ExtParam    = s->ext_buffers;
-        par.NumExtParam = FF_ARRAY_ELEMS(s->ext_buffers);
+        s->ext_buffers[s->num_ext_buffers++] = (mfxExtBuffer *)&s->opaque_alloc;
 
         par.IOPattern = MFX_IOPATTERN_IN_OPAQUE_MEMORY | MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
     } else {
@@ -260,6 +268,9 @@ static int init_out_session(AVFilterContext *ctx)
         par.IOPattern = MFX_IOPATTERN_IN_VIDEO_MEMORY | MFX_IOPATTERN_OUT_VIDEO_MEMORY;
     }
 
+    par.ExtParam    = s->ext_buffers;
+    par.NumExtParam = s->num_ext_buffers;
+
     par.AsyncDepth = 1;    // TODO async
 
     par.vpp.In = hw_frames_hwctx->surfaces[0].Info;
@@ -534,6 +545,9 @@ static int qsvdeint_request_frame(AVFilterLink *outlink)
 #define OFFSET(x) offsetof(QSVDeintContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_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 },
 };