mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 21:28:45 +00:00
293 lines
7.2 KiB
C
293 lines
7.2 KiB
C
/* GStreamer command line playback testing utility - keyboard handling helpers
|
|
*
|
|
* Copyright (C) 2013 Tim-Philipp Müller <tim centricular net>
|
|
* Copyright (C) 2013 Centricular Ltd
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gst-play-kb.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#ifdef G_OS_UNIX
|
|
#include <unistd.h>
|
|
#include <termios.h>
|
|
#endif
|
|
|
|
#ifdef G_OS_WIN32
|
|
#include <windows.h>
|
|
#include <io.h>
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
|
|
/* This is all not thread-safe, but doesn't have to be really */
|
|
static GstPlayKbFunc kb_callback;
|
|
static gpointer kb_callback_data;
|
|
|
|
#ifdef G_OS_UNIX
|
|
static struct termios term_settings;
|
|
static gboolean term_settings_saved = FALSE;
|
|
static gulong io_watch_id;
|
|
|
|
static gboolean
|
|
gst_play_kb_io_cb (GIOChannel * ioc, GIOCondition cond, gpointer user_data)
|
|
{
|
|
GIOStatus status;
|
|
|
|
if (cond & G_IO_IN) {
|
|
gchar buf[16] = { 0, };
|
|
gsize read;
|
|
|
|
status = g_io_channel_read_chars (ioc, buf, sizeof (buf) - 1, &read, NULL);
|
|
if (status == G_IO_STATUS_ERROR)
|
|
return FALSE;
|
|
if (status == G_IO_STATUS_NORMAL) {
|
|
if (kb_callback)
|
|
kb_callback (buf, kb_callback_data);
|
|
}
|
|
}
|
|
|
|
return TRUE; /* call us again */
|
|
}
|
|
|
|
gboolean
|
|
gst_play_kb_set_key_handler (GstPlayKbFunc kb_func, gpointer user_data)
|
|
{
|
|
GIOChannel *ioc;
|
|
|
|
if (!isatty (STDIN_FILENO)) {
|
|
GST_INFO ("stdin is not connected to a terminal");
|
|
return FALSE;
|
|
}
|
|
|
|
if (io_watch_id > 0) {
|
|
g_source_remove (io_watch_id);
|
|
io_watch_id = 0;
|
|
}
|
|
|
|
if (kb_func == NULL && term_settings_saved) {
|
|
/* restore terminal settings */
|
|
if (tcsetattr (STDIN_FILENO, TCSAFLUSH, &term_settings) == 0)
|
|
term_settings_saved = FALSE;
|
|
else
|
|
g_warning ("could not restore terminal attributes");
|
|
|
|
setvbuf (stdin, NULL, _IOLBF, 0);
|
|
}
|
|
|
|
if (kb_func != NULL) {
|
|
struct termios new_settings;
|
|
|
|
if (!term_settings_saved) {
|
|
if (tcgetattr (STDIN_FILENO, &term_settings) != 0) {
|
|
g_warning ("could not save terminal attributes");
|
|
return FALSE;
|
|
}
|
|
term_settings_saved = TRUE;
|
|
|
|
/* Echo off, canonical mode off, extended input processing off */
|
|
new_settings = term_settings;
|
|
new_settings.c_lflag &= ~(ECHO | ICANON | IEXTEN);
|
|
new_settings.c_cc[VMIN] = 0;
|
|
new_settings.c_cc[VTIME] = 0;
|
|
|
|
if (tcsetattr (STDIN_FILENO, TCSAFLUSH, &new_settings) != 0) {
|
|
g_warning ("Could not set terminal state");
|
|
return FALSE;
|
|
}
|
|
setvbuf (stdin, NULL, _IONBF, 0);
|
|
}
|
|
}
|
|
|
|
ioc = g_io_channel_unix_new (STDIN_FILENO);
|
|
|
|
io_watch_id = g_io_add_watch_full (ioc, G_PRIORITY_DEFAULT, G_IO_IN,
|
|
(GIOFunc) gst_play_kb_io_cb, user_data, NULL);
|
|
g_io_channel_unref (ioc);
|
|
|
|
kb_callback = kb_func;
|
|
kb_callback_data = user_data;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#elif defined(G_OS_WIN32)
|
|
|
|
typedef struct
|
|
{
|
|
GThread *thread;
|
|
HANDLE event_handle;
|
|
HANDLE console_handle;
|
|
gboolean closing;
|
|
GMutex lock;
|
|
} Win32KeyHandler;
|
|
|
|
static Win32KeyHandler *win32_handler = NULL;
|
|
|
|
static gboolean
|
|
gst_play_kb_source_cb (Win32KeyHandler * handler)
|
|
{
|
|
HANDLE h_input = handler->console_handle;
|
|
INPUT_RECORD buffer;
|
|
DWORD n;
|
|
|
|
if (PeekConsoleInput (h_input, &buffer, 1, &n) && n == 1) {
|
|
ReadConsoleInput (h_input, &buffer, 1, &n);
|
|
|
|
if (buffer.EventType == KEY_EVENT && buffer.Event.KeyEvent.bKeyDown) {
|
|
gchar key_val[2] = { 0 };
|
|
|
|
switch (buffer.Event.KeyEvent.wVirtualKeyCode) {
|
|
case VK_RIGHT:
|
|
kb_callback (GST_PLAY_KB_ARROW_RIGHT, kb_callback_data);
|
|
break;
|
|
case VK_LEFT:
|
|
kb_callback (GST_PLAY_KB_ARROW_LEFT, kb_callback_data);
|
|
break;
|
|
case VK_UP:
|
|
kb_callback (GST_PLAY_KB_ARROW_UP, kb_callback_data);
|
|
break;
|
|
case VK_DOWN:
|
|
kb_callback (GST_PLAY_KB_ARROW_DOWN, kb_callback_data);
|
|
break;
|
|
default:
|
|
key_val[0] = buffer.Event.KeyEvent.uChar.AsciiChar;
|
|
kb_callback (key_val, kb_callback_data);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static gpointer
|
|
gst_play_kb_win32_thread (gpointer user_data)
|
|
{
|
|
Win32KeyHandler *handler = (Win32KeyHandler *) user_data;
|
|
HANDLE handles[2];
|
|
|
|
handles[0] = handler->event_handle;
|
|
handles[1] = handler->console_handle;
|
|
|
|
if (!kb_callback)
|
|
return NULL;
|
|
|
|
while (TRUE) {
|
|
DWORD ret = WaitForMultipleObjects (2, handles, FALSE, INFINITE);
|
|
|
|
if (ret == WAIT_FAILED) {
|
|
GST_WARNING ("WaitForMultipleObject Failed");
|
|
return NULL;
|
|
}
|
|
|
|
g_mutex_lock (&handler->lock);
|
|
if (handler->closing) {
|
|
g_mutex_unlock (&handler->lock);
|
|
|
|
return NULL;
|
|
}
|
|
g_mutex_unlock (&handler->lock);
|
|
|
|
g_idle_add ((GSourceFunc) gst_play_kb_source_cb, handler);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gboolean
|
|
gst_play_kb_set_key_handler (GstPlayKbFunc kb_func, gpointer user_data)
|
|
{
|
|
gint fd = _fileno (stdin);
|
|
|
|
if (!_isatty (fd)) {
|
|
GST_INFO ("stdin is not connected to a terminal");
|
|
return FALSE;
|
|
}
|
|
|
|
if (win32_handler) {
|
|
g_mutex_lock (&win32_handler->lock);
|
|
win32_handler->closing = TRUE;
|
|
g_mutex_unlock (&win32_handler->lock);
|
|
|
|
SetEvent (win32_handler->event_handle);
|
|
g_thread_join (win32_handler->thread);
|
|
CloseHandle (win32_handler->event_handle);
|
|
|
|
g_mutex_clear (&win32_handler->lock);
|
|
g_free (win32_handler);
|
|
win32_handler = NULL;
|
|
}
|
|
|
|
if (kb_func) {
|
|
SECURITY_ATTRIBUTES sec_attrs;
|
|
|
|
sec_attrs.nLength = sizeof (SECURITY_ATTRIBUTES);
|
|
sec_attrs.lpSecurityDescriptor = NULL;
|
|
sec_attrs.bInheritHandle = FALSE;
|
|
|
|
win32_handler = g_new0 (Win32KeyHandler, 1);
|
|
|
|
/* create cancellable event handle */
|
|
win32_handler->event_handle = CreateEvent (&sec_attrs, TRUE, FALSE, NULL);
|
|
|
|
if (!win32_handler->event_handle) {
|
|
GST_WARNING ("Couldn't create event handle");
|
|
g_free (win32_handler);
|
|
win32_handler = NULL;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
win32_handler->console_handle = GetStdHandle (STD_INPUT_HANDLE);
|
|
if (!win32_handler->console_handle) {
|
|
GST_WARNING ("Couldn't get console handle");
|
|
CloseHandle (win32_handler->event_handle);
|
|
g_free (win32_handler);
|
|
win32_handler = NULL;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
g_mutex_init (&win32_handler->lock);
|
|
win32_handler->thread =
|
|
g_thread_new ("gst-play-kb", gst_play_kb_win32_thread, win32_handler);
|
|
}
|
|
|
|
kb_callback = kb_func;
|
|
kb_callback_data = user_data;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#else
|
|
|
|
gboolean
|
|
gst_play_kb_set_key_handler (GstPlayKbFunc key_func, gpointer user_data)
|
|
{
|
|
GST_FIXME ("Keyboard handling for this OS needs to be implemented");
|
|
return FALSE;
|
|
}
|
|
|
|
#endif /* !G_OS_UNIX */
|