gstreamer/gst-libs/gst/vaapi/gstvaapidisplay_x11.c

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/*
* gstvaapidisplay_x11.c - VA/X11 display abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
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* Copyright (C) 2011-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
* 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.
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*
* This library is distributed in the hope that it will be useful,
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* 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.
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*
* 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
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*/
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/**
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* SECTION:gstvaapidisplay_x11
* @short_description: VA/X11 display abstraction
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*/
#include "sysdeps.h"
#include <string.h>
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#include "gstvaapiutils.h"
#include "gstvaapidisplay_priv.h"
#include "gstvaapidisplay_x11.h"
#include "gstvaapidisplay_x11_priv.h"
#include "gstvaapiwindow_x11.h"
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#ifdef HAVE_XRANDR
# include <X11/extensions/Xrandr.h>
#endif
#ifdef HAVE_XRENDER
# include <X11/extensions/Xrender.h>
#endif
#define DEBUG_VAAPI_DISPLAY 1
#include "gstvaapidebug.h"
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#define _do_init \
G_ADD_PRIVATE (GstVaapiDisplayX11);
G_DEFINE_TYPE_WITH_CODE (GstVaapiDisplayX11, gst_vaapi_display_x11,
GST_TYPE_VAAPI_DISPLAY, _do_init);
static const guint g_display_types = 1U << GST_VAAPI_DISPLAY_TYPE_X11;
static gboolean
parse_display_name (const gchar * name, guint * len_ptr, guint * id_ptr,
guint * screen_ptr)
{
gulong len, id = 0, screen = 0;
gchar *end;
end = strchr (name, ':');
len = end ? end - name : strlen (name);
if (end) {
id = strtoul (&end[1], &end, 10);
if (*end == '.')
screen = strtoul (&end[1], &end, 10);
if (*end != '\0')
return FALSE;
}
if (len_ptr)
*len_ptr = len;
if (id_ptr)
*id_ptr = id;
if (screen_ptr)
*screen_ptr = screen;
return TRUE;
}
static gint
compare_display_name (gconstpointer a, gconstpointer b)
{
const GstVaapiDisplayInfo *const info = a;
const gchar *const cached_name = info->display_name;
const gchar *const tested_name = b;
guint cached_name_length, cached_id;
guint tested_name_length, tested_id;
g_return_val_if_fail (cached_name, FALSE);
g_return_val_if_fail (tested_name, FALSE);
if (!parse_display_name (cached_name, &cached_name_length, &cached_id, NULL))
return FALSE;
if (!parse_display_name (tested_name, &tested_name_length, &tested_id, NULL))
return FALSE;
if (cached_name_length != tested_name_length)
return FALSE;
if (strncmp (cached_name, tested_name, cached_name_length) != 0)
return FALSE;
if (cached_id != tested_id)
return FALSE;
return TRUE;
}
static inline const gchar *
get_default_display_name (void)
{
static const gchar *g_display_name;
if (!g_display_name)
g_display_name = getenv ("DISPLAY");
return g_display_name;
}
/* Reconstruct a display name without our prefix */
static const gchar *
get_display_name (GstVaapiDisplayX11 * display)
{
GstVaapiDisplayX11Private *const priv = display->priv;
const gchar *display_name = priv->display_name;
if (!display_name || *display_name == '\0')
return NULL;
return display_name;
}
/* Mangle display name with our prefix */
static gboolean
set_display_name (GstVaapiDisplayX11 * display, const gchar * display_name)
{
GstVaapiDisplayX11Private *const priv = display->priv;
g_free (priv->display_name);
if (!display_name) {
display_name = get_default_display_name ();
if (!display_name)
display_name = "";
}
priv->display_name = g_strdup (display_name);
return priv->display_name != NULL;
}
/* Set synchronous behavious on the underlying X11 display */
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static void
set_synchronous (GstVaapiDisplayX11 * display, gboolean synchronous)
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{
GstVaapiDisplayX11Private *const priv = display->priv;
if (priv->synchronous != synchronous) {
priv->synchronous = synchronous;
if (priv->x11_display) {
GST_VAAPI_DISPLAY_LOCK (display);
XSynchronize (priv->x11_display, synchronous);
GST_VAAPI_DISPLAY_UNLOCK (display);
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}
}
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}
/* Check for display server extensions */
static void
check_extensions (GstVaapiDisplayX11 * display)
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{
GstVaapiDisplayX11Private *const priv = display->priv;
int evt_base, err_base;
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#ifdef HAVE_XRANDR
priv->use_xrandr = XRRQueryExtension (priv->x11_display,
&evt_base, &err_base);
#endif
#ifdef HAVE_XRENDER
priv->has_xrender = XRenderQueryExtension (priv->x11_display,
&evt_base, &err_base);
#endif
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}
static gboolean
gst_vaapi_display_x11_bind_display (GstVaapiDisplay * base_display,
gpointer native_display)
{
GstVaapiDisplayX11 *const display = GST_VAAPI_DISPLAY_X11_CAST (base_display);
GstVaapiDisplayX11Private *const priv = display->priv;
priv->x11_display = native_display;
priv->x11_screen = DefaultScreen (native_display);
priv->use_foreign_display = TRUE;
check_extensions (display);
if (!set_display_name (display, XDisplayString (priv->x11_display)))
return FALSE;
return TRUE;
}
static gboolean
gst_vaapi_display_x11_open_display (GstVaapiDisplay * base_display,
const gchar * name)
{
GstVaapiDisplayX11 *const display = GST_VAAPI_DISPLAY_X11_CAST (base_display);
GstVaapiDisplayX11Private *const priv = display->priv;
GstVaapiDisplayCache *const cache = GST_VAAPI_DISPLAY_CACHE (display);
const GstVaapiDisplayInfo *info;
if (!set_display_name (display, name))
return FALSE;
info = gst_vaapi_display_cache_lookup_custom (cache, compare_display_name,
priv->display_name, g_display_types);
if (info) {
priv->x11_display = info->native_display;
priv->use_foreign_display = TRUE;
} else {
priv->x11_display = XOpenDisplay (get_display_name (display));
if (!priv->x11_display)
return FALSE;
priv->use_foreign_display = FALSE;
}
priv->x11_screen = DefaultScreen (priv->x11_display);
check_extensions (display);
return TRUE;
}
static void
gst_vaapi_display_x11_close_display (GstVaapiDisplay * display)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
if (priv->pixmap_formats) {
g_array_free (priv->pixmap_formats, TRUE);
priv->pixmap_formats = NULL;
}
if (priv->x11_display) {
if (!priv->use_foreign_display)
XCloseDisplay (priv->x11_display);
priv->x11_display = NULL;
}
if (priv->display_name) {
g_free (priv->display_name);
priv->display_name = NULL;
}
}
static void
gst_vaapi_display_x11_sync (GstVaapiDisplay * display)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
if (priv->x11_display) {
GST_VAAPI_DISPLAY_LOCK (display);
XSync (priv->x11_display, False);
GST_VAAPI_DISPLAY_UNLOCK (display);
}
}
static void
gst_vaapi_display_x11_flush (GstVaapiDisplay * display)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
if (priv->x11_display) {
GST_VAAPI_DISPLAY_LOCK (display);
XFlush (priv->x11_display);
GST_VAAPI_DISPLAY_UNLOCK (display);
}
}
static gboolean
gst_vaapi_display_x11_get_display_info (GstVaapiDisplay * display,
GstVaapiDisplayInfo * info)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
GstVaapiDisplayCache *const cache = GST_VAAPI_DISPLAY_CACHE (display);
const GstVaapiDisplayInfo *cached_info;
/* Return any cached info even if child has its own VA display */
cached_info = gst_vaapi_display_cache_lookup_by_native_display (cache,
priv->x11_display, g_display_types);
if (cached_info) {
*info = *cached_info;
return TRUE;
}
/* Otherwise, create VA display if there is none already */
info->native_display = priv->x11_display;
info->display_name = priv->display_name;
if (!info->va_display) {
info->va_display = vaGetDisplay (priv->x11_display);
if (!info->va_display)
return FALSE;
info->display_type = GST_VAAPI_DISPLAY_TYPE_X11;
}
return TRUE;
}
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static void
gst_vaapi_display_x11_get_size (GstVaapiDisplay * display,
guint * pwidth, guint * pheight)
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{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
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if (!priv->x11_display)
return;
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if (pwidth)
*pwidth = DisplayWidth (priv->x11_display, priv->x11_screen);
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if (pheight)
*pheight = DisplayHeight (priv->x11_display, priv->x11_screen);
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}
static void
gst_vaapi_display_x11_get_size_mm (GstVaapiDisplay * display,
guint * pwidth, guint * pheight)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
guint width_mm, height_mm;
if (!priv->x11_display)
return;
width_mm = DisplayWidthMM (priv->x11_display, priv->x11_screen);
height_mm = DisplayHeightMM (priv->x11_display, priv->x11_screen);
#ifdef HAVE_XRANDR
/* XXX: fix up physical size if the display is rotated */
if (priv->use_xrandr) {
XRRScreenConfiguration *xrr_config = NULL;
XRRScreenSize *xrr_sizes;
Window win;
int num_xrr_sizes, size_id, screen;
Rotation rotation;
do {
win = DefaultRootWindow (priv->x11_display);
screen = XRRRootToScreen (priv->x11_display, win);
xrr_config = XRRGetScreenInfo (priv->x11_display, win);
if (!xrr_config)
break;
size_id = XRRConfigCurrentConfiguration (xrr_config, &rotation);
if (rotation == RR_Rotate_0 || rotation == RR_Rotate_180)
break;
xrr_sizes = XRRSizes (priv->x11_display, screen, &num_xrr_sizes);
if (!xrr_sizes || size_id >= num_xrr_sizes)
break;
width_mm = xrr_sizes[size_id].mheight;
height_mm = xrr_sizes[size_id].mwidth;
} while (0);
if (xrr_config)
XRRFreeScreenConfigInfo (xrr_config);
}
#endif
if (pwidth)
*pwidth = width_mm;
if (pheight)
*pheight = height_mm;
}
static GstVaapiWindow *
gst_vaapi_display_x11_create_window (GstVaapiDisplay * display, GstVaapiID id,
guint width, guint height)
{
return id != GST_VAAPI_ID_INVALID ?
gst_vaapi_window_x11_new_with_xid (display, id) :
gst_vaapi_window_x11_new (display, width, height);
}
void
gst_vaapi_display_x11_class_init (GstVaapiDisplayX11Class * klass)
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{
GstVaapiDisplayClass *const dpy_class = GST_VAAPI_DISPLAY_CLASS (klass);
dpy_class->display_type = GST_VAAPI_DISPLAY_TYPE_X11;
dpy_class->bind_display = gst_vaapi_display_x11_bind_display;
dpy_class->open_display = gst_vaapi_display_x11_open_display;
dpy_class->close_display = gst_vaapi_display_x11_close_display;
dpy_class->sync = gst_vaapi_display_x11_sync;
dpy_class->flush = gst_vaapi_display_x11_flush;
dpy_class->get_display = gst_vaapi_display_x11_get_display_info;
dpy_class->get_size = gst_vaapi_display_x11_get_size;
dpy_class->get_size_mm = gst_vaapi_display_x11_get_size_mm;
dpy_class->create_window = gst_vaapi_display_x11_create_window;
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}
static void
gst_vaapi_display_x11_init (GstVaapiDisplayX11 * display)
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{
GstVaapiDisplayX11Private *const priv =
gst_vaapi_display_x11_get_instance_private (display);
display->priv = priv;
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}
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/**
* gst_vaapi_display_x11_new:
* @display_name: the X11 display name
*
* Opens an X11 #Display using @display_name and returns a newly
* allocated #GstVaapiDisplay object. The X11 display will be cloed
* when the reference count of the object reaches zero.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_x11_new (const gchar * display_name)
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{
return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL),
GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME, (gpointer) display_name);
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}
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/**
* gst_vaapi_display_x11_new_with_display:
* @x11_display: an X11 #Display
*
* Creates a #GstVaapiDisplay based on the X11 @x11_display
* display. The caller still owns the display and must call
* XCloseDisplay() when all #GstVaapiDisplay references are
* released. Doing so too early can yield undefined behaviour.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_x11_new_with_display (Display * x11_display)
{
g_return_val_if_fail (x11_display, NULL);
return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL),
GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, x11_display);
}
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/**
* gst_vaapi_display_x11_get_display:
* @display: a #GstVaapiDisplayX11
*
* Returns the underlying X11 #Display that was created by
* gst_vaapi_display_x11_new() or that was bound from
* gst_vaapi_display_x11_new_with_display().
*
* Return value: the X11 #Display attached to @display
*/
Display *
gst_vaapi_display_x11_get_display (GstVaapiDisplayX11 * display)
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{
g_return_val_if_fail (GST_VAAPI_IS_DISPLAY_X11 (display), NULL);
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return GST_VAAPI_DISPLAY_XDISPLAY (display);
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}
/**
* gst_vaapi_display_x11_get_screen:
* @display: a #GstVaapiDisplayX11
*
* Returns the default X11 screen that was created by
* gst_vaapi_display_x11_new() or that was bound from
* gst_vaapi_display_x11_new_with_display().
*
* Return value: the X11 #Display attached to @display
*/
int
gst_vaapi_display_x11_get_screen (GstVaapiDisplayX11 * display)
{
g_return_val_if_fail (GST_VAAPI_IS_DISPLAY_X11 (display), -1);
return GST_VAAPI_DISPLAY_XSCREEN (display);
}
/**
* gst_vaapi_display_x11_set_synchronous:
* @display: a #GstVaapiDisplayX11
* @synchronous: boolean value that indicates whether to enable or
* disable synchronization
*
* If @synchronous is %TRUE, gst_vaapi_display_x11_set_synchronous()
* turns on synchronous behaviour on the underlying X11
* display. Otherwise, synchronous behaviour is disabled if
* @synchronous is %FALSE.
*/
void
gst_vaapi_display_x11_set_synchronous (GstVaapiDisplayX11 * display,
gboolean synchronous)
{
g_return_if_fail (GST_VAAPI_IS_DISPLAY_X11 (display));
set_synchronous (display, synchronous);
}
typedef struct _GstVaapiPixmapFormatX11 GstVaapiPixmapFormatX11;
struct _GstVaapiPixmapFormatX11
{
GstVideoFormat format;
gint depth;
gint bpp;
};
static GstVideoFormat
pix_fmt_to_video_format (gint depth, gint bpp)
{
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
switch (bpp) {
case 16:
if (depth == 15)
format = GST_VIDEO_FORMAT_RGB15;
else if (depth == 16)
format = GST_VIDEO_FORMAT_RGB16;
break;
case 24:
if (depth == 24)
format = GST_VIDEO_FORMAT_RGB;
break;
case 32:
if (depth == 24 || depth == 32)
format = GST_VIDEO_FORMAT_xRGB;
break;
}
return format;
}
static gboolean
ensure_pix_fmts (GstVaapiDisplayX11 * display)
{
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
XPixmapFormatValues *pix_fmts;
int i, n, num_pix_fmts;
if (priv->pixmap_formats)
return TRUE;
GST_VAAPI_DISPLAY_LOCK (display);
pix_fmts = XListPixmapFormats (GST_VAAPI_DISPLAY_XDISPLAY (display),
&num_pix_fmts);
GST_VAAPI_DISPLAY_UNLOCK (display);
if (!pix_fmts)
return FALSE;
priv->pixmap_formats = g_array_sized_new (FALSE, FALSE,
sizeof (GstVaapiPixmapFormatX11), num_pix_fmts);
if (!priv->pixmap_formats) {
XFree (pix_fmts);
return FALSE;
}
for (i = 0, n = 0; i < num_pix_fmts; i++) {
GstVaapiPixmapFormatX11 *const pix_fmt =
&g_array_index (priv->pixmap_formats, GstVaapiPixmapFormatX11, n);
pix_fmt->depth = pix_fmts[i].depth;
pix_fmt->bpp = pix_fmts[i].bits_per_pixel;
pix_fmt->format = pix_fmt_to_video_format (pix_fmt->depth, pix_fmt->bpp);
if (pix_fmt->format != GST_VIDEO_FORMAT_UNKNOWN)
n++;
}
priv->pixmap_formats->len = n;
return TRUE;
}
/* Determine the GstVideoFormat based on a supported Pixmap depth */
GstVideoFormat
gst_vaapi_display_x11_get_pixmap_format (GstVaapiDisplayX11 * display,
guint depth)
{
if (ensure_pix_fmts (display)) {
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
guint i;
for (i = 0; i < priv->pixmap_formats->len; i++) {
GstVaapiPixmapFormatX11 *const pix_fmt =
&g_array_index (priv->pixmap_formats, GstVaapiPixmapFormatX11, i);
if (pix_fmt->depth == depth)
return pix_fmt->format;
}
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
/* Determine the Pixmap depth based on a GstVideoFormat */
guint
gst_vaapi_display_x11_get_pixmap_depth (GstVaapiDisplayX11 * display,
GstVideoFormat format)
{
if (ensure_pix_fmts (display)) {
GstVaapiDisplayX11Private *const priv =
GST_VAAPI_DISPLAY_X11_PRIVATE (display);
guint i;
for (i = 0; i < priv->pixmap_formats->len; i++) {
GstVaapiPixmapFormatX11 *const pix_fmt =
&g_array_index (priv->pixmap_formats, GstVaapiPixmapFormatX11, i);
if (pix_fmt->format == format)
return pix_fmt->depth;
}
}
return 0;
}