gstreamer/gst/vaapi/gstvaapipluginutil.c

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/*
* gstvaapipluginutil.h - VA-API plugin helpers
*
* Copyright (C) 2011 Intel Corporation
* Copyright (C) 2011 Collabora
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
*
* 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstvaapipluginutil.h"
#include <string.h>
#ifdef USE_VAAPI_GLX
#include <gst/vaapi/gstvaapidisplay_glx.h>
#else
#include <gst/vaapi/gstvaapidisplay_x11.h>
#endif
/* Preferred first */
static const char *display_types[] = {
"gst-vaapi-display",
"vaapi-display",
"x11-display",
"x11-display-name",
NULL
};
gboolean
gst_vaapi_ensure_display (gpointer element, GstVaapiDisplay **display)
{
GstVideoContext *context;
g_return_val_if_fail (GST_IS_VIDEO_CONTEXT (element), FALSE);
g_return_val_if_fail (display != NULL, FALSE);
/* Already exist ? */
if (*display)
return TRUE;
context = GST_VIDEO_CONTEXT (element);
gst_video_context_prepare (context, display_types);
/* If no neighboor, or application not interested, use system default */
if (!*display)
#if USE_VAAPI_GLX
*display = gst_vaapi_display_glx_new (NULL);
#else
*display = gst_vaapi_display_x11_new (NULL);
#endif
/* FIXME allocator should return NULL in case of failure */
if (*display && !gst_vaapi_display_get_display(*display)) {
g_object_unref (*display);
*display = NULL;
}
return (*display != NULL);
}
void
gst_vaapi_set_display (const gchar *type,
const GValue *value,
GstVaapiDisplay **display)
{
GstVaapiDisplay *dpy = NULL;
if (!strcmp (type, "x11-display-name")) {
g_return_if_fail (G_VALUE_HOLDS_STRING (value));
#if USE_VAAPI_GLX
dpy = gst_vaapi_display_glx_new (g_value_get_string (value));
#else
dpy = gst_vaapi_display_x11_new (g_value_get_string (value));
#endif
} else if (!strcmp (type, "x11-display")) {
g_return_if_fail (G_VALUE_HOLDS_POINTER (value));
#if USE_VAAPI_GLX
dpy = gst_vaapi_display_glx_new_with_display (g_value_get_pointer (value));
#else
dpy = gst_vaapi_display_x11_new_with_display (g_value_get_pointer (value));
#endif
} else if (!strcmp (type, "vaapi-display")) {
g_return_if_fail (G_VALUE_HOLDS_POINTER (value));
dpy = gst_vaapi_display_new_with_display (g_value_get_pointer (value));
} else if (!strcmp (type, "gst-vaapi-display")) {
g_return_if_fail (G_VALUE_HOLDS_OBJECT (value));
dpy = g_value_dup_object (value);
}
if (dpy) {
if (*display)
g_object_unref (*display);
*display = dpy;
}
}
gboolean
gst_vaapi_reply_to_query (GstQuery *query, GstVaapiDisplay *display)
{
const gchar **types;
const gchar *type;
gint i;
gboolean res = FALSE;
if (!display)
return FALSE;
types = gst_video_context_query_get_supported_types (query);
if (!types)
return FALSE;
for (i = 0; types[i]; i++) {
type = types[i];
if (!strcmp (type, "gst-vaapi-display")) {
gst_video_context_query_set_object (query, type, G_OBJECT (display));
} else if (!strcmp (type, "vaapi-display")) {
VADisplay vadpy = gst_vaapi_display_get_display(display);
gst_video_context_query_set_pointer (query, type, vadpy);
} else if (!strcmp (type, "x11-display") &&
GST_VAAPI_IS_DISPLAY_X11(display)) {
GstVaapiDisplayX11 *xvadpy = GST_VAAPI_DISPLAY_X11 (display);
Display *x11dpy = gst_vaapi_display_x11_get_display (xvadpy);
gst_video_context_query_set_pointer (query, type, x11dpy);
} else if (!strcmp (type, "x11-display-name") &&
GST_VAAPI_IS_DISPLAY_X11(display)) {
GstVaapiDisplayX11 *xvadpy = GST_VAAPI_DISPLAY_X11 (display);
Display *x11dpy = gst_vaapi_display_x11_get_display (xvadpy);
gst_video_context_query_set_string (query, type, DisplayString(x11dpy));
} else {
continue;
}
res = TRUE;
break;
}
return res;
}
gboolean
gst_vaapi_append_surface_caps (GstCaps *out_caps, GstCaps *in_caps)
{
GstStructure *structure;
const GValue *v_width, *v_height, *v_framerate, *v_par;
guint i, n_structures;
structure = gst_caps_get_structure (in_caps, 0);
v_width = gst_structure_get_value (structure, "width");
v_height = gst_structure_get_value (structure, "height");
v_framerate = gst_structure_get_value (structure, "framerate");
v_par = gst_structure_get_value (structure, "pixel-aspect-ratio");
if (!v_width || !v_height)
return FALSE;
n_structures = gst_caps_get_size (out_caps);
for (i = 0; i < n_structures; i++) {
structure = gst_caps_get_structure (out_caps, i);
gst_structure_set_value (structure, "width", v_width);
gst_structure_set_value (structure, "height", v_height);
if (v_framerate)
gst_structure_set_value (structure, "framerate", v_framerate);
if (v_par)
gst_structure_set_value (structure, "pixel-aspect-ratio", v_par);
}
return TRUE;
}