libs: profilecaps: move caps config into a new file

Implement all the appending of frame size restrictions in caps, for
encoders and decoders, in a new source file.

1 files changed, 118 insertions, 0 deletions

diff --git a/gst-libs/gst/vaapi/gstvaapiprofilecaps.c b/gst-libs/gst/vaapi/gstvaapiprofilecaps.c
new file mode 100644
index 00000000..b786b77b
--- /dev/null
+++ b/gst-libs/gst/vaapi/gstvaapiprofilecaps.c
@@ -0,0 +1,118 @@
+/*
+ *  gstvaapiprofilecaps.h - VA config attributes as gstreamer capabilities
+ *
+ *  Copyright (C) 2019 Igalia, S.L.
+ *    Author: Víctor Jáquez <vjaquez@igalia.com>
+ *
+ *  This library 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.
+ *
+ *  This library 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 this library; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301 USA
+ */
+
+/**
+ * SECTION:gstvaapiprofilecaps
+ * @short_description: VA config attributes as gstreamer capabilities
+ */
+
+#include "sysdeps.h"
+#include "gstvaapicompat.h"
+#include "gstvaapicontext.h"
+#include "gstvaapiprofilecaps.h"
+#include "gstvaapiutils.h"
+
+static gboolean
+init_context_info (GstVaapiDisplay * display, GstVaapiContextInfo * cip)
+{
+  guint value = 0;
+
+  /* XXX: Only try a context from he first RTFormat in config. */
+  if (!gst_vaapi_get_config_attribute (display,
+          gst_vaapi_profile_get_va_profile (cip->profile),
+          gst_vaapi_entrypoint_get_va_entrypoint (cip->entrypoint),
+          VAConfigAttribRTFormat, &value)) {
+    return FALSE;
+  }
+
+  cip->chroma_type = to_GstVaapiChromaType (value);
+  return cip->chroma_type != 0;
+}
+
+static GstVaapiContext *
+create_context (GstVaapiDisplay * display, GstVaapiContextInfo * cip)
+{
+  if (!init_context_info (display, cip))
+    return NULL;
+  return gst_vaapi_context_new (display, cip);
+}
+
+static gboolean
+append_caps (GstVaapiContext * context, GstStructure * structure)
+{
+  GstVaapiConfigSurfaceAttributes attribs = { 0, };
+
+  if (!gst_vaapi_context_get_surface_attributes (context, &attribs))
+    return FALSE;
+
+  if (attribs.min_width >= attribs.max_width ||
+      attribs.min_height >= attribs.max_height)
+    return FALSE;
+
+  gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, attribs.min_width,
+      attribs.max_width, "height", GST_TYPE_INT_RANGE, attribs.min_height,
+      attribs.max_height, NULL);
+
+  return TRUE;
+}
+
+/**
+ * gst_vaapi_decoder_add_profile_caps:
+ * @display: a #GstVaapiDisplay
+ * @profile: a #GstVaapiProfile
+ * @structure: a #GstStructure
+ *
+ * Extracts the config's surface attributes, from @profile, in an
+ * decoder context, and transforms it into a caps formats and appended
+ * into @structure.
+ *
+ * Returns: %TRUE if the capabilities could be extracted and appended
+ * into @structure; otherwise %FALSE
+ **/
+gboolean
+gst_vaapi_profile_caps_append_decoder (GstVaapiDisplay * display,
+    GstVaapiProfile profile, GstStructure * structure)
+{
+  GstVaapiContext *context;
+  GstVaapiContextInfo cip = {
+    GST_VAAPI_CONTEXT_USAGE_DECODE, profile, GST_VAAPI_ENTRYPOINT_VLD, 0,
+  };
+  gboolean ret;
+
+  g_return_val_if_fail (display != NULL, FALSE);
+  g_return_val_if_fail (structure != NULL, FALSE);
+
+  context = create_context (display, &cip);
+  if (!context)
+    return FALSE;
+
+  ret = append_caps (context, structure);
+  gst_vaapi_object_unref (context);
+  return ret;
+}
+
+gboolean
+gst_vaapi_profile_caps_append_encoder (GstVaapiDisplay * display,
+    GstVaapiProfile profile, GstStructure * structure)
+{
+  return TRUE;
+}