mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
/* GStreamer command line playback testing utility - keyboard handling helpers
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*
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* Copyright (C) 2013 Tim-Philipp Müller <tim centricular net>
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* Copyright (C) 2013 Centricular Ltd
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "d3d11videosink-kb.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <windows.h>
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#include <io.h>
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#include <gst/gst.h>
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/* This is all not thread-safe, but doesn't have to be really */
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static GstD3D11VideoSinkKbFunc kb_callback;
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static gpointer kb_callback_data;
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typedef struct
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{
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GThread *thread;
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HANDLE event_handle;
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HANDLE console_handle;
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gboolean closing;
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GMutex lock;
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} Win32KeyHandler;
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static Win32KeyHandler *win32_handler = NULL;
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static gboolean
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gst_d3d11_video_sink_source_cb (Win32KeyHandler * handler)
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{
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HANDLE h_input = handler->console_handle;
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INPUT_RECORD buffer;
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DWORD n;
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if (PeekConsoleInput (h_input, &buffer, 1, &n) && n == 1) {
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ReadConsoleInput (h_input, &buffer, 1, &n);
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if (buffer.EventType == KEY_EVENT && buffer.Event.KeyEvent.bKeyDown) {
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if (buffer.Event.KeyEvent.wVirtualKeyCode == VK_SPACE) {
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kb_callback (' ', kb_callback_data);
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} else {
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kb_callback (buffer.Event.KeyEvent.uChar.AsciiChar, kb_callback_data);
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}
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}
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}
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return G_SOURCE_REMOVE;
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}
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static gpointer
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gst_d3d11_video_sink_kb_thread (gpointer user_data)
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{
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Win32KeyHandler *handler = (Win32KeyHandler *) user_data;
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HANDLE handles[2];
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handles[0] = handler->event_handle;
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handles[1] = handler->console_handle;
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if (!kb_callback)
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return NULL;
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while (TRUE) {
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DWORD ret = WaitForMultipleObjects (2, handles, FALSE, INFINITE);
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if (ret == WAIT_FAILED) {
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GST_WARNING ("WaitForMultipleObject Failed");
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return NULL;
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}
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g_mutex_lock (&handler->lock);
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if (handler->closing) {
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g_mutex_unlock (&handler->lock);
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return NULL;
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}
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g_mutex_unlock (&handler->lock);
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g_idle_add ((GSourceFunc) gst_d3d11_video_sink_source_cb, handler);
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}
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return NULL;
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}
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gboolean
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gst_d3d11_video_sink_kb_set_key_handler (GstD3D11VideoSinkKbFunc kb_func,
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gpointer user_data)
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{
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gint fd = _fileno (stdin);
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if (!_isatty (fd)) {
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GST_INFO ("stdin is not connected to a terminal");
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return FALSE;
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}
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if (win32_handler) {
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g_mutex_lock (&win32_handler->lock);
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win32_handler->closing = TRUE;
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g_mutex_unlock (&win32_handler->lock);
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SetEvent (win32_handler->event_handle);
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g_thread_join (win32_handler->thread);
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CloseHandle (win32_handler->event_handle);
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g_mutex_clear (&win32_handler->lock);
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g_free (win32_handler);
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win32_handler = NULL;
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}
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if (kb_func) {
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SECURITY_ATTRIBUTES sec_attrs;
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sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
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sec_attrs.lpSecurityDescriptor = NULL;
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sec_attrs.bInheritHandle = FALSE;
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win32_handler = g_new0 (Win32KeyHandler, 1);
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/* create cancellable event handle */
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win32_handler->event_handle = CreateEvent (&sec_attrs, TRUE, FALSE, NULL);
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if (!win32_handler->event_handle) {
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g_warning ("Couldn't create event handle\n");
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g_free (win32_handler);
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win32_handler = NULL;
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return FALSE;
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}
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win32_handler->console_handle = GetStdHandle (STD_INPUT_HANDLE);
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if (!win32_handler->console_handle) {
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g_warning ("Couldn't get console handle\n");
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CloseHandle (win32_handler->event_handle);
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g_free (win32_handler);
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win32_handler = NULL;
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return FALSE;
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}
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g_mutex_init (&win32_handler->lock);
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win32_handler->thread =
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g_thread_new ("gst-play-kb", gst_d3d11_video_sink_kb_thread,
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win32_handler);
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}
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kb_callback = kb_func;
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kb_callback_data = user_data;
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return TRUE;
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}
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