mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
351 lines
9.3 KiB
C
351 lines
9.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
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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 <gst/gst.h>
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#include <gst/video/video.h>
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#include <windows.h>
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#include <string.h>
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#include "../key-handler.h"
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static GMainLoop *loop = NULL;
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static gboolean visible = FALSE;
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static gboolean test_reuse = FALSE;
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static HWND hwnd = NULL;
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typedef struct
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{
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GstElement *pipeline;
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GstElement *sink;
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gboolean fullscreen;
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gboolean force_aspect_ratio;
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} CallbackData;
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static LRESULT CALLBACK
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window_proc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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switch (message) {
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case WM_DESTROY:
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hwnd = NULL;
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g_print ("destroy\n");
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if (loop) {
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g_main_loop_quit (loop);
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}
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return 0;
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default:
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break;
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}
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return DefWindowProc (hWnd, message, wParam, lParam);
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}
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static void
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keyboard_cb (gchar input, gboolean is_ascii, CallbackData * data)
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{
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if (!is_ascii)
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return;
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switch (input) {
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case 'q':
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case 'Q':
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gst_element_send_event (data->pipeline, gst_event_new_eos ());
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if (hwnd)
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PostMessage (hwnd, WM_CLOSE, 0, 0);
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else
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g_main_loop_quit (loop);
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break;
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case 27: /* ESC */
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gst_element_send_event (data->pipeline, gst_event_new_eos ());
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if (hwnd)
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PostMessage (hwnd, WM_CLOSE, 0, 0);
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else
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g_main_loop_quit (loop);
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break;
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case ' ':
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data->fullscreen = !data->fullscreen;
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gst_print ("change to %s mode\n", data->fullscreen ?
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"fullscreen" : "windowed");
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g_object_set (data->sink, "fullscreen", data->fullscreen, NULL);
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break;
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case 'f':
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data->force_aspect_ratio = !data->force_aspect_ratio;
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g_object_set (data->sink,
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"force-aspect-ratio", data->force_aspect_ratio, NULL);
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break;
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default:
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break;
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}
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}
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static gboolean
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bus_msg (GstBus * bus, GstMessage * msg, CallbackData * data)
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{
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GstElement *pipeline = data->pipeline;
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_ASYNC_DONE:
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/* make window visible when we have something to show */
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if (!visible && hwnd) {
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ShowWindow (hwnd, SW_SHOW);
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visible = TRUE;
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}
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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break;
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case GST_MESSAGE_ERROR:{
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GError *err;
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gchar *dbg;
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gst_message_parse_error (msg, &err, &dbg);
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g_printerr ("ERROR %s \n", err->message);
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if (dbg != NULL)
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g_printerr ("ERROR debug information: %s\n", dbg);
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g_clear_error (&err);
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g_free (dbg);
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test_reuse = FALSE;
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g_main_loop_quit (loop);
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break;
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}
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case GST_MESSAGE_ELEMENT:
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{
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GstNavigationMessageType mtype = gst_navigation_message_get_type (msg);
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if (mtype == GST_NAVIGATION_MESSAGE_EVENT) {
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GstEvent *ev = NULL;
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if (gst_navigation_message_parse_event (msg, &ev)) {
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GstNavigationEventType e_type = gst_navigation_event_get_type (ev);
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if (e_type == GST_NAVIGATION_EVENT_KEY_PRESS) {
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const gchar *key;
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if (gst_navigation_event_parse_key_event (ev, &key)) {
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if (strcmp (key, "space") == 0 || strcmp (key, "Space") == 0) {
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keyboard_cb (' ', TRUE, data);
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} else {
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keyboard_cb (key[0], TRUE, data);
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}
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}
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}
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}
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if (ev)
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gst_event_unref (ev);
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}
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break;
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}
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default:
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break;
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}
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return TRUE;
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}
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static gboolean
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msg_cb (GIOChannel * source, GIOCondition condition, gpointer data)
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{
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MSG msg;
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if (!PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
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return G_SOURCE_CONTINUE;
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TranslateMessage (&msg);
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DispatchMessage (&msg);
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return G_SOURCE_CONTINUE;
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}
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static gboolean
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timeout_cb (gpointer user_data)
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{
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g_main_loop_quit ((GMainLoop *) user_data);
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return G_SOURCE_REMOVE;
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}
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static void
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print_keyboard_help (void)
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{
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static struct
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{
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const gchar *key_desc;
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const gchar *key_help;
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} key_controls[] = {
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{
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"q or ESC", "Quit"}, {
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"SPACE", "Toggle fullscreen mode"}, {
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"f", "Toggle force-aspect-ratio"}
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};
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guint i, chars_to_pad, desc_len, max_desc_len = 0;
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gst_print ("\n%s\n", "Keyboard controls:");
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for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
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desc_len = g_utf8_strlen (key_controls[i].key_desc, -1);
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max_desc_len = MAX (max_desc_len, desc_len);
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}
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++max_desc_len;
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for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
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chars_to_pad = max_desc_len - g_utf8_strlen (key_controls[i].key_desc, -1);
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gst_print ("\t%s", key_controls[i].key_desc);
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gst_print ("%-*s: ", chars_to_pad, "");
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gst_print ("%s\n", key_controls[i].key_help);
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}
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gst_print ("\n");
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}
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gint
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main (gint argc, gchar ** argv)
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{
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GstElement *pipeline, *src, *sink;
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GstStateChangeReturn sret;
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WNDCLASSEX wc = { 0, };
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HINSTANCE hinstance = GetModuleHandle (NULL);
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GIOChannel *msg_io_channel = NULL;
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GOptionContext *option_ctx;
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GError *error = NULL;
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RECT wr = { 0, 0, 320, 240 };
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gint exitcode = 0;
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gboolean ret;
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gboolean use_overlay = FALSE;
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gboolean start_fullscreen = FALSE;
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GOptionEntry options[] = {
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{"use-overlay", 0, 0, G_OPTION_ARG_NONE, &use_overlay,
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"Test reuse video sink element", NULL}
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,
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{"repeat", 0, 0, G_OPTION_ARG_NONE, &test_reuse,
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"Test reuse video sink element", NULL}
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,
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{"start-fullscreen", 0, 0, G_OPTION_ARG_NONE, &start_fullscreen,
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"Run pipeline in fullscreen mode", NULL}
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,
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{NULL}
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};
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gint num_repeat = 0;
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CallbackData cb_data = { 0, };
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option_ctx = g_option_context_new ("WIN32 video overlay example");
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g_option_context_add_main_entries (option_ctx, options, NULL);
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g_option_context_add_group (option_ctx, gst_init_get_option_group ());
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ret = g_option_context_parse (option_ctx, &argc, &argv, &error);
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g_option_context_free (option_ctx);
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if (!ret) {
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g_printerr ("option parsing failed: %s\n", error->message);
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g_clear_error (&error);
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exit (1);
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}
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print_keyboard_help ();
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loop = g_main_loop_new (NULL, FALSE);
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if (use_overlay) {
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/* prepare window */
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wc.cbSize = sizeof (WNDCLASSEX);
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wc.style = CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = (WNDPROC) window_proc;
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wc.hInstance = hinstance;
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wc.hCursor = LoadCursor (NULL, IDC_ARROW);
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wc.lpszClassName = "GstD3D11VideoSinkExample";
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RegisterClassEx (&wc);
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AdjustWindowRect (&wr, WS_OVERLAPPEDWINDOW, FALSE);
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hwnd = CreateWindowEx (0, wc.lpszClassName, "GstD3D11VideoSinkExample",
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WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW,
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CW_USEDEFAULT, CW_USEDEFAULT,
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wr.right - wr.left, wr.bottom - wr.top, (HWND) NULL, (HMENU) NULL,
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hinstance, NULL);
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msg_io_channel = g_io_channel_win32_new_messages (0);
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g_io_add_watch (msg_io_channel, G_IO_IN, msg_cb, NULL);
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}
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/* prepare the pipeline */
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pipeline = gst_pipeline_new ("d3d11videosink-pipeline");
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src = gst_element_factory_make ("videotestsrc", NULL);
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sink = gst_element_factory_make ("d3d11videosink", NULL);
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cb_data.fullscreen = start_fullscreen;
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cb_data.force_aspect_ratio = TRUE;
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cb_data.pipeline = pipeline;
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cb_data.sink = sink;
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g_object_set (sink, "fullscreen-toggle-mode", 0x2 | 0x4, NULL);
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_element_link (src, sink);
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gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), (GstBusFunc) bus_msg,
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&cb_data);
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set_key_handler ((KeyInputCallback) keyboard_cb, &cb_data);
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if (start_fullscreen)
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g_object_set (sink, "fullscreen", TRUE, NULL);
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do {
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gst_print ("Running loop %d\n", num_repeat++);
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if (use_overlay) {
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gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (sink),
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(guintptr) hwnd);
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}
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sret = gst_element_set_state (pipeline, GST_STATE_PAUSED);
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if (sret == GST_STATE_CHANGE_FAILURE) {
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g_printerr ("Pipeline doesn't want to pause\n");
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break;
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} else {
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/* add timer to repeat and reuse pipeline */
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if (test_reuse) {
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GSource *timeout_source = g_timeout_source_new_seconds (3);
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g_source_set_callback (timeout_source,
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(GSourceFunc) timeout_cb, loop, NULL);
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g_source_attach (timeout_source, NULL);
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g_source_unref (timeout_source);
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}
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g_main_loop_run (loop);
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}
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gst_element_set_state (pipeline, GST_STATE_NULL);
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visible = FALSE;
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} while (test_reuse);
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gst_bus_remove_watch (GST_ELEMENT_BUS (pipeline));
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terminate:
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unset_key_handler ();
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if (hwnd)
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DestroyWindow (hwnd);
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gst_object_unref (pipeline);
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if (msg_io_channel)
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g_io_channel_unref (msg_io_channel);
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g_main_loop_unref (loop);
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return exitcode;
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}
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