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gst-play: Add support for interacting console input on Windows

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Add Windows keyboard input handler. This could make gst-play UX
consistent between *nix and Windows.
This commit is contained in:
Seungha Yang 2019-09-24 15:05:30 +09:00
parent 96c6f581ae
commit f1d3307e03
1 changed files with 83 additions and 6 deletions
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89
tools/gst-play-kb.c
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@ -34,16 +34,19 @@
#include <termios.h>
#endif
#ifdef G_OS_WIN32
#include <windows.h>
#endif
#include <gst/gst.h>
/* This is all not thread-safe, but doesn't have to be really */
#ifdef G_OS_UNIX
static struct termios term_settings;
static gboolean term_settings_saved = FALSE;
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
@ -128,7 +131,81 @@ gst_play_kb_set_key_handler (GstPlayKbFunc kb_func, gpointer user_data)
return TRUE;
}
#else /* !G_OS_UNIX */
#elif defined(G_OS_WIN32)
static GSource *source = NULL;
static gboolean
gst_play_kb_source_cb (gpointer user_data)
{
HANDLE h_input = GetStdHandle (STD_INPUT_HANDLE);
INPUT_RECORD buffer;
DWORD n;
if (PeekConsoleInput (h_input, &buffer, 1, &n) && n == 1) {
ReadConsoleInput (h_input, &buffer, 1, &n);
if (!kb_callback)
return G_SOURCE_REMOVE;
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_CONTINUE;
}
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 (source) {
g_source_destroy (source);
g_source_unref (source);
source = NULL;
}
if (kb_func) {
/* check input per 50 ms */
source = g_timeout_source_new (50);
g_source_set_callback (source,
(GSourceFunc) gst_play_kb_source_cb, NULL, NULL);
g_source_attach (source, NULL);
}
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)