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#include <stdio.h>
#include <string.h>
#include <gst/gst.h>
#include <gst/video/video.h>
static gboolean use_postproc;
static GOptionEntry g_options[] = {
{"postproc", 'p', 0, G_OPTION_ARG_NONE, &use_postproc,
"use vaapipostproc to rotate rather than vaapisink", NULL},
{NULL,}
};
typedef struct _CustomData
{
GstElement *pipeline;
GstElement *rotator;
GMainLoop *loop;
gboolean orient_automatic;
} AppData;
static void
send_rotate_event (AppData * data)
{
gboolean res = FALSE;
GstEvent *event;
static gint counter = 0;
const static gchar *tags[] = { "rotate-90", "rotate-180", "rotate-270",
"rotate-0", "flip-rotate-0", "flip-rotate-90", "flip-rotate-180",
"flip-rotate-270",
};
event = gst_event_new_tag (gst_tag_list_new (GST_TAG_IMAGE_ORIENTATION,
tags[counter++ % G_N_ELEMENTS (tags)], NULL));
/* Send the event */
g_print ("Sending event %" GST_PTR_FORMAT ": ", event);
res = gst_element_send_event (data->pipeline, event);
g_print ("%s\n", res ? "ok" : "failed");
}
static void
keyboard_cb (const gchar * key, AppData * data)
{
switch (g_ascii_tolower (key[0])) {
case 'r':
send_rotate_event (data);
break;
case 's':{
if (use_postproc) {
g_object_set (G_OBJECT (data->rotator), "video-direction",
GST_VIDEO_ORIENTATION_AUTO, NULL);
} else {
/* rotation=360 means auto for vaapisnk */
g_object_set (G_OBJECT (data->rotator), "rotation", 360, NULL);
}
break;
}
case 'q':
g_main_loop_quit (data->loop);
break;
default:
break;
}
}
static gboolean
bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
{
AppData *data = user_data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_ELEMENT:
{
GstNavigationMessageType mtype = gst_navigation_message_get_type (msg);
if (mtype == GST_NAVIGATION_MESSAGE_EVENT) {
GstEvent *ev = NULL;
if (gst_navigation_message_parse_event (msg, &ev)) {
GstNavigationEventType type = gst_navigation_event_get_type (ev);
if (type == GST_NAVIGATION_EVENT_KEY_PRESS) {
const gchar *key;
if (gst_navigation_event_parse_key_event (ev, &key))
keyboard_cb (key, data);
}
}
if (ev)
gst_event_unref (ev);
}
break;
}
default:
break;
}
return TRUE;
}
/* Process keyboard input */
static gboolean
handle_keyboard (GIOChannel * source, GIOCondition cond, AppData * data)
{
gchar *str = NULL;
if (g_io_channel_read_line (source, &str, NULL, NULL,
NULL) != G_IO_STATUS_NORMAL) {
return TRUE;
}
keyboard_cb (str, data);
g_free (str);
return TRUE;
}
int
main (int argc, char *argv[])
{
AppData data;
GstStateChangeReturn ret;
GIOChannel *io_stdin;
GOptionContext *ctx;
GError *err = NULL;
guint srcid;
/* Initialize GStreamer */
ctx = g_option_context_new ("- test options");
if (!ctx)
return -1;
g_option_context_add_group (ctx, gst_init_get_option_group ());
g_option_context_add_main_entries (ctx, g_options, NULL);
if (!g_option_context_parse (ctx, &argc, &argv, NULL))
return -1;
g_option_context_free (ctx);
/* Print usage map */
g_print ("USAGE: Choose one of the following options, then press enter:\n"
" 'r' to send image-orientation tag event\n"
" 's' to set orient-automatic\n" " 'Q' to quit\n");
if (use_postproc) {
data.pipeline =
gst_parse_launch ("videotestsrc ! vaapipostproc name=pp ! xvimagesink",
&err);
} else {
data.pipeline =
gst_parse_launch ("videotestsrc ! vaapisink name=sink", &err);
}
if (err) {
g_printerr ("failed to create pipeline: %s\n", err->message);
g_error_free (err);
return -1;
}
if (use_postproc)
data.rotator = gst_bin_get_by_name (GST_BIN (data.pipeline), "pp");
else
data.rotator = gst_bin_get_by_name (GST_BIN (data.pipeline), "sink");
srcid = gst_bus_add_watch (GST_ELEMENT_BUS (data.pipeline), bus_msg, &data);
/* Add a keyboard watch so we get notified of keystrokes */
io_stdin = g_io_channel_unix_new (fileno (stdin));
g_io_add_watch (io_stdin, G_IO_IN, (GIOFunc) handle_keyboard, &data);
/* Start playing */
ret = gst_element_set_state (data.pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
g_printerr ("Unable to set the pipeline to the playing state.\n");
goto bail;
}
/* Create a GLib Main Loop and set it to run */
data.loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (data.loop);
gst_element_set_state (data.pipeline, GST_STATE_NULL);
bail:
/* Free resources */
g_source_remove (srcid);
g_main_loop_unref (data.loop);
g_io_channel_unref (io_stdin);
gst_object_unref (data.rotator);
gst_object_unref (data.pipeline);
return 0;
}
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