From 82f11ffb3088b8f5e6905a462a4990526767857b Mon Sep 17 00:00:00 2001
From: Holger Kaelberer <holger.k@elberer.de>
Date: Tue, 7 Feb 2012 15:54:15 +0100
Subject: [PATCH] decoder: maintain caps for interlaced streams.

Extend GstVaapiDecoder base object to maintain caps with "interlaced"
property.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
---
 gst-libs/gst/vaapi/gstvaapidecoder.c      | 22 ++++++++++++++++++++++
 gst-libs/gst/vaapi/gstvaapidecoder_priv.h |  5 +++++
 2 files changed, 27 insertions(+)

diff --git a/gst-libs/gst/vaapi/gstvaapidecoder.c b/gst-libs/gst/vaapi/gstvaapidecoder.c
index b316a8a58e..d47bea6a63 100644
--- a/gst-libs/gst/vaapi/gstvaapidecoder.c
+++ b/gst-libs/gst/vaapi/gstvaapidecoder.c
@@ -162,6 +162,7 @@ set_caps(GstVaapiDecoder *decoder, GstCaps *caps)
     GstVaapiProfile profile;
     const GValue *v_codec_data;
     gint v1, v2;
+    gboolean b;
 
     profile = gst_vaapi_profile_from_caps(caps);
     if (!profile)
@@ -188,6 +189,9 @@ set_caps(GstVaapiDecoder *decoder, GstCaps *caps)
         priv->par_d = v2;
     }
 
+    if (gst_structure_get_boolean(structure, "interlaced", &b))
+        priv->is_interlaced = b;
+
     v_codec_data = gst_structure_get_value(structure, "codec_data");
     if (v_codec_data)
         set_codec_data(decoder, gst_value_get_buffer(v_codec_data));
@@ -346,6 +350,7 @@ gst_vaapi_decoder_init(GstVaapiDecoder *decoder)
     priv->par_d                 = 0;
     priv->buffers               = g_queue_new();
     priv->surfaces              = g_queue_new();
+    priv->is_interlaced         = FALSE;
 }
 
 /**
@@ -503,6 +508,23 @@ gst_vaapi_decoder_set_pixel_aspect_ratio(
     }
 }
 
+void
+gst_vaapi_decoder_set_interlaced(GstVaapiDecoder *decoder, gboolean interlaced)
+{
+    GstVaapiDecoderPrivate * const priv = decoder->priv;
+
+    if (priv->is_interlaced != interlaced) {
+        GST_DEBUG("interlaced changed to %s", interlaced ? "true" : "false");
+        priv->is_interlaced = interlaced;
+        gst_caps_set_simple(
+            priv->caps,
+            "interlaced", G_TYPE_BOOLEAN, interlaced,
+            NULL
+        );
+        g_object_notify(G_OBJECT(decoder), "caps");
+    }
+}
+
 gboolean
 gst_vaapi_decoder_ensure_context(
     GstVaapiDecoder    *decoder,
diff --git a/gst-libs/gst/vaapi/gstvaapidecoder_priv.h b/gst-libs/gst/vaapi/gstvaapidecoder_priv.h
index 45478d47e7..6e153e594b 100644
--- a/gst-libs/gst/vaapi/gstvaapidecoder_priv.h
+++ b/gst-libs/gst/vaapi/gstvaapidecoder_priv.h
@@ -125,6 +125,7 @@ struct _GstVaapiDecoderPrivate {
     guint               par_d;
     GQueue             *buffers;
     GQueue             *surfaces;
+    guint               is_interlaced   : 1;
 };
 
 void
@@ -148,6 +149,10 @@ gst_vaapi_decoder_set_pixel_aspect_ratio(
     guint               par_d
 ) attribute_hidden;
 
+void
+gst_vaapi_decoder_set_interlaced(GstVaapiDecoder *decoder, gboolean interlaced)
+    attribute_hidden;
+
 gboolean
 gst_vaapi_decoder_ensure_context(
     GstVaapiDecoder    *decoder,