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gstreamer/gst/vaapi/gstvaapipluginutil.c
Gwenole Beauchesne 6118e76b62 plugins: add support for headless pipelines.
2012-08-01 16:40:17 +02:00

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/*
* gstvaapipluginutil.h - VA-API plugin helpers
*
* Copyright (C) 2011-2012 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 <string.h>
#include <gst/video/videocontext.h>
#if USE_DRM
# include <gst/vaapi/gstvaapidisplay_drm.h>
#endif
#if USE_X11
# include <gst/vaapi/gstvaapidisplay_x11.h>
#endif
#if USE_GLX
# include <gst/vaapi/gstvaapidisplay_glx.h>
#endif
#if USE_WAYLAND
# include <gst/vaapi/gstvaapidisplay_wayland.h>
#endif
#include "gstvaapipluginutil.h"
/* Preferred first */
static const char *display_types[] = {
"gst-vaapi-display",
"vaapi-display",
#if USE_WAYLAND
"wl-display",
"wl-display-name",
#endif
#if USE_X11
"x11-display",
"x11-display-name",
#endif
#if USE_DRM
"drm-device",
"drm-device-path",
#endif
NULL
};
typedef struct {
const gchar *type_str;
GstVaapiDisplayType type;
GstVaapiDisplay * (*create_display)(const gchar *);
} DisplayMap;
static const DisplayMap g_display_map[] = {
#if USE_WAYLAND
{ "wayland",
GST_VAAPI_DISPLAY_TYPE_WAYLAND,
gst_vaapi_display_wayland_new },
#endif
#if USE_X11
{ "x11",
GST_VAAPI_DISPLAY_TYPE_X11,
gst_vaapi_display_x11_new },
#endif
#if USE_GLX
{ "glx",
GST_VAAPI_DISPLAY_TYPE_GLX,
gst_vaapi_display_glx_new },
#endif
#if USE_DRM
{ "drm",
GST_VAAPI_DISPLAY_TYPE_DRM,
gst_vaapi_display_drm_new },
#endif
{ NULL, }
};
gboolean
gst_vaapi_ensure_display(
gpointer element,
GstVaapiDisplayType display_type,
GstVaapiDisplay **display_ptr
)
{
GstVaapiDisplay *display;
GstVideoContext *context;
const DisplayMap *m;
g_return_val_if_fail(GST_IS_VIDEO_CONTEXT(element), FALSE);
g_return_val_if_fail(display_ptr != NULL, FALSE);
/* Already exist ? */
display = *display_ptr;
if (display)
return TRUE;
context = GST_VIDEO_CONTEXT(element);
g_return_val_if_fail(context != NULL, FALSE);
gst_video_context_prepare(context, display_types);
/* Neighbour found and it updated the display */
if (*display_ptr)
return TRUE;
/* If no neighboor, or application not interested, use system default */
for (m = g_display_map; m->type_str != NULL; m++) {
if (display_type != GST_VAAPI_DISPLAY_TYPE_ANY &&
display_type != m->type)
continue;
display = m->create_display(NULL);
if (display) {
/* FIXME: allocator should return NULL if an error occurred */
if (gst_vaapi_display_get_display(display)) {
display_type = m->type;
break;
}
g_object_unref(display);
display = NULL;
}
if (display_type != GST_VAAPI_DISPLAY_TYPE_ANY)
break;
}
if (display_ptr)
*display_ptr = display;
return display != NULL;
}
void
gst_vaapi_set_display(
const gchar *type,
const GValue *value,
GstVaapiDisplay **display
)
{
GstVaapiDisplay *dpy = NULL;
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 USE_DRM
else if (!strcmp(type, "drm-device")) {
gint device;
g_return_if_fail(G_VALUE_HOLDS_INT(value));
device = g_value_get_int(value);
dpy = gst_vaapi_display_drm_new_with_device(device);
}
else if (!strcmp(type, "drm-device-path")) {
const gchar *device_path;
g_return_if_fail(G_VALUE_HOLDS_STRING(value));
device_path = g_value_get_string(value);
dpy = gst_vaapi_display_drm_new(device_path);
}
#endif
#if USE_X11
else if (!strcmp(type, "x11-display-name")) {
g_return_if_fail(G_VALUE_HOLDS_STRING(value));
#if USE_GLX
dpy = gst_vaapi_display_glx_new(g_value_get_string(value));
#endif
if (!dpy)
dpy = gst_vaapi_display_x11_new(g_value_get_string(value));
}
else if (!strcmp(type, "x11-display")) {
g_return_if_fail(G_VALUE_HOLDS_POINTER(value));
#if USE_GLX
dpy = gst_vaapi_display_glx_new_with_display(g_value_get_pointer(value));
#endif
if (!dpy)
dpy = gst_vaapi_display_x11_new_with_display(g_value_get_pointer(value));
}
#endif
#if USE_WAYLAND
else if (!strcmp(type, "wl-display")) {
struct wl_display *wl_display;
g_return_if_fail(G_VALUE_HOLDS_POINTER(value));
wl_display = g_value_get_pointer(value);
dpy = gst_vaapi_display_wayland_new_with_display(wl_display);
}
else if (!strcmp(type, "wl-display-name")) {
const gchar *display_name;
g_return_if_fail(G_VALUE_HOLDS_STRING(value));
display_name = g_value_get_string(value);
dpy = gst_vaapi_display_wayland_new(display_name);
}
#endif
if (dpy) {
if (*display)
g_object_unref(*display);
*display = dpy;
}
}
gboolean
gst_vaapi_reply_to_query(GstQuery *query, GstVaapiDisplay *display)
{
GstVaapiDisplayType display_type;
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;
display_type = gst_vaapi_display_get_display_type(display);
for (i = 0; types[i] && !res; i++) {
type = types[i];
res = TRUE;
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 {
switch (display_type) {
#if USE_DRM
case GST_VAAPI_DISPLAY_TYPE_DRM: {
GstVaapiDisplayDRM * const drm_dpy =
GST_VAAPI_DISPLAY_DRM(display);
if (!strcmp(type, "drm-device-path"))
gst_video_context_query_set_string(query, type,
gst_vaapi_display_drm_get_device_path(drm_dpy));
#if 0
/* XXX: gst_video_context_query_set_int() does not exist yet */
else if (!strcmp(type, "drm-device"))
gst_video_context_query_set_int(query, type,
gst_vaapi_display_drm_get_device(drm_dpy));
#endif
else
res = FALSE;
break;
}
#endif
#if USE_X11
#if USE_GLX
case GST_VAAPI_DISPLAY_TYPE_GLX:
#endif
case GST_VAAPI_DISPLAY_TYPE_X11: {
GstVaapiDisplayX11 * const xvadpy =
GST_VAAPI_DISPLAY_X11(display);
Display * const x11dpy =
gst_vaapi_display_x11_get_display(xvadpy);
if (!strcmp(type, "x11-display"))
gst_video_context_query_set_pointer(query, type, x11dpy);
else if (!strcmp(type, "x11-display-name"))
gst_video_context_query_set_string(query, type,
DisplayString(x11dpy));
else
res = FALSE;
break;
}
#endif
#if USE_WAYLAND
case GST_VAAPI_DISPLAY_TYPE_WAYLAND: {
GstVaapiDisplayWayland * const wlvadpy =
GST_VAAPI_DISPLAY_WAYLAND(display);
struct wl_display * const wldpy =
gst_vaapi_display_wayland_get_display(wlvadpy);
if (!strcmp(type, "wl-display"))
gst_video_context_query_set_pointer(query, type, wldpy);
else
res = FALSE;
break;
}
#endif
default:
res = FALSE;
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;
}
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