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Merge branch 'gst-launch-win32-dpi' into 'main'

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gst-launch: Add support for Windows process DPI awareness setting

See merge request gstreamer/gstreamer!4293
This commit is contained in:
Seungha Yang 2024-05-03 19:37:00 +00:00
parent 66c1383051 c4d3187024
commit cfad4f3e8d
2 changed files with 74 additions and 0 deletions
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71
subprojects/gstreamer/tools/gst-launch.c
View file

@ -49,6 +49,9 @@
#ifdef HAVE_WINMM
#include <mmsystem.h>
#endif
#ifdef HAVE_SHELLSCALINGAPI_H
#include <shellscalingapi.h>
#endif
#ifdef __APPLE__
#include <TargetConditionals.h>
@ -1075,6 +1078,62 @@ clear_winmm_timer_resolution (guint resolution)
}
#endif
#ifdef HAVE_SHELLSCALINGAPI_H
typedef HRESULT (__stdcall *
SetProcessDpiAwareness_Fn) (PROCESS_DPI_AWARENESS value);
/* APIs in shellscalingapi.h require Windows 8.1 or newer.
* Use LoadLibrary instead of linking symbols at build time */
static gboolean
set_win32_dpi_awareness (const gchar * awareness)
{
DWORD old_mode;
BOOL suppressed;
PROCESS_DPI_AWARENESS dpi = PROCESS_DPI_UNAWARE;
HRESULT hr;
HMODULE module = NULL;
SetProcessDpiAwareness_Fn setProcessDpiAwareness;
if (!awareness)
return FALSE;
if (g_strcmp0 (awareness, "unaware") == 0)
dpi = PROCESS_DPI_UNAWARE;
else if (g_strcmp0 (awareness, "system") == 0)
dpi = PROCESS_SYSTEM_DPI_AWARE;
else if (g_strcmp0 (awareness, "per-monitor") == 0)
dpi = PROCESS_PER_MONITOR_DPI_AWARE;
else
return FALSE;
suppressed =
SetThreadErrorMode (SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS,
&old_mode);
module = LoadLibraryW (L"shcore.dll");
if (suppressed)
SetThreadErrorMode (old_mode, NULL);
if (!module) {
g_warning ("Couldn't load shcore.dll");
return FALSE;
}
(FARPROC) setProcessDpiAwareness =
GetProcAddress (module, "SetProcessDpiAwareness");
if (!setProcessDpiAwareness) {
g_warning ("Couldn't get SetProcessDpiAwareness symbol");
FreeLibrary (module);
return FALSE;
}
hr = setProcessDpiAwareness (dpi);
return SUCCEEDED (hr);
}
#endif
static int
real_main (int argc, char *argv[])
{
@ -1087,6 +1146,9 @@ real_main (int argc, char *argv[])
gchar *savefile = NULL;
gboolean no_position = FALSE;
gboolean force_position = FALSE;
#ifdef HAVE_SHELLSCALINGAPI_H
gchar *dpi_awareness = NULL;
#endif
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"tags", 't', 0, G_OPTION_ARG_NONE, &tags,
@ -1126,6 +1188,11 @@ real_main (int argc, char *argv[])
"stdout is not a TTY. This option has no effect if "
"the \"no-position\" option is specified"),
NULL},
#ifdef HAVE_SHELLSCALINGAPI_H
{"dpi-awareness", '\0', 0, G_OPTION_ARG_STRING, &dpi_awareness,
N_("Process DPI awareness value to use. Supported values are "
"\"unaware\", \"system\", and \"per-monitor\""), NULL},
#endif
{NULL}
};
GOptionContext *ctx;
@ -1191,6 +1258,10 @@ real_main (int argc, char *argv[])
#ifdef G_OS_WIN32
argc = g_strv_length (argv);
#endif
#ifdef HAVE_SHELLSCALINGAPI_H
if (set_win32_dpi_awareness (dpi_awareness))
PRINT (_("Configured process DPI awareness: \"%s\"\n"), dpi_awareness);
#endif
gst_tools_print_version ();

3
subprojects/gstreamer/tools/meson.build
View file

@ -14,6 +14,9 @@ if gst_parse
extra_launch_dep += [winmm_lib]
extra_launch_arg += ['-DHAVE_WINMM']
endif
if cc.has_header('shellscalingapi.h')
extra_launch_arg += ['-DHAVE_SHELLSCALINGAPI_H']
endif
endif
tools += ['gst-launch']