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overlay: fix build without advanced GstVideoOverlayFormatFlags.

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Check for global-alpha support in GstVideoOverlayComposition API.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Holger Kaelberer 2012-07-20 12:36:33 +02:00 committed by Gwenole Beauchesne
parent bfc4e6e4f6
commit 082a56599b
5 changed files with 48 additions and 1 deletions
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31
configure.ac
View file

@ -200,7 +200,8 @@ AC_CACHE_CHECK([for GstVideoOverlayComposition],
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <gst/video/video-overlay-composition.h>]],
[[GstVideoOverlayComposition *c = gst_video_overlay_composition_new(0);]])],
[[GstVideoOverlayComposition *c;
c = gst_video_overlay_composition_new(0);]])],
[ac_cv_have_gst_video_overlay_composition="yes"],
[ac_cv_have_gst_video_overlay_composition="no"]
)
@ -211,6 +212,34 @@ if test "$ac_cv_have_gst_video_overlay_composition" != "yes"; then
AC_MSG_ERROR([GstVideoOverlayComposition is not available])
fi
AC_CACHE_CHECK([... with advanced format flags],
ac_cv_have_gst_video_overlay_hwcaps, [
saved_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $GST_CFLAGS $GST_VIDEO_CFLAGS"
saved_LIBS="$LIBS"
LIBS="$LIBS $GST_LIBS $GST_VIDEO_LIBS"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <gst/video/video-overlay-composition.h>]],
[[GstVideoOverlayRectangle *rect;
const guint w = 64, h = 64;
guint flags = (
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA|
GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA);
rect = gst_video_overlay_rectangle_new_argb(NULL, w, h, w * 4,
0, 0, w, h, flags);
gst_video_overlay_rectangle_set_global_alpha(rect, 0.5f);]])],
[ac_cv_have_gst_video_overlay_hwcaps="yes"],
[ac_cv_have_gst_video_overlay_hwcaps="no"]
)
CPPFLAGS="$saved_CPPFLAGS"
LIBS="$saved_LIBS"
])
if test "$ac_cv_have_gst_video_overlay_hwcaps" = "yes"; then
AC_DEFINE_UNQUOTED([HAVE_GST_VIDEO_OVERLAY_HWCAPS], 1,
[Defined to 1 if GstVideoOverlayComposition API supports HW hints.])
fi
dnl ... GstVideoDecoder (gstreamer-video)
AC_CACHE_CHECK([for GstVideoDecoder],
ac_cv_have_gst_video_decoder, [

2
gst-libs/gst/vaapi/gstvaapicontext.c
View file

@ -295,9 +295,11 @@ static inline gboolean
overlay_rectangle_update_global_alpha(GstVaapiOverlayRectangle *overlay,
GstVideoOverlayRectangle *rect)
{
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
const guint flags = gst_video_overlay_rectangle_get_flags(rect);
if (!(flags & GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA))
return TRUE;
#endif
return gst_vaapi_subpicture_set_global_alpha(overlay->subpicture,
gst_video_overlay_rectangle_get_global_alpha(rect));
}

4
gst-libs/gst/vaapi/gstvaapiutils.c
View file

@ -260,10 +260,12 @@ from_GstVideoOverlayFormatFlags(guint ovl_flags)
{
guint flags = 0;
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
if (ovl_flags & GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA)
flags |= GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA;
if (ovl_flags & GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA)
flags |= GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA;
#endif
return flags;
}
@ -280,10 +282,12 @@ to_GstVideoOverlayFormatFlags(guint flags)
{
guint ovl_flags = 0;
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
if (flags & GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA)
ovl_flags |= GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA;
if (flags & GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA)
ovl_flags |= GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA;
#endif
return ovl_flags;
}

6
gst-libs/gst/vaapi/sysdeps.h
View file

@ -28,4 +28,10 @@
#include "glibcompat.h"
/* <gst/video/video-overlay-composition.h> compatibility glue */
#ifndef HAVE_GST_VIDEO_OVERLAY_HWCAPS
# define gst_video_overlay_rectangle_get_flags(rect) (0)
# define gst_video_overlay_rectangle_get_global_alpha(rect) (1.0f)
#endif
#endif /* SYSDEPS_H */

6
tests/test-subpicture.c
View file

@ -41,10 +41,12 @@ static GOptionEntry g_options[] = {
0,
G_OPTION_ARG_STRING, &g_codec_str,
"codec to test", NULL },
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
{ "global-alpha", 'g',
0,
G_OPTION_ARG_DOUBLE, &g_global_alpha,
"global-alpha value", NULL },
#endif
{ NULL, }
};
@ -82,8 +84,10 @@ main(int argc, char *argv[])
if (!video_output_init(&argc, argv, g_options))
g_error("failed to initialize video output subsystem");
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
if (g_global_alpha != 1.0)
flags |= GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA;
#endif
g_print("Test subpicture\n");
@ -123,8 +127,10 @@ main(int argc, char *argv[])
g_error("could not create video overlay");
gst_buffer_unref(buffer);
#ifdef HAVE_GST_VIDEO_OVERLAY_HWCAPS
if (flags & GST_VIDEO_OVERLAY_FORMAT_FLAG_GLOBAL_ALPHA)
gst_video_overlay_rectangle_set_global_alpha(overlay, g_global_alpha);
#endif
compo = gst_video_overlay_composition_new(overlay);
if (!compo)