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examples: facedetect: make volume control optional

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This commit is contained in:
Luis de Bethencourt 2015-08-10 16:51:17 +01:00
parent b7777b9181
commit 53a9374eb5
1 changed files with 44 additions and 23 deletions
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67
tests/examples/opencv/gstfacedetect_test.c
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@ -29,6 +29,7 @@
GstElement *playbin, *pipeline;
GstElement *v4l2src, *videoscale, *videoconvert_in, *facedetect,
*videoconvert_out, *autovideosink;
static gboolean ctrlvol = FALSE;
static GstBusSyncReply
bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
@ -42,7 +43,6 @@ bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
gchar *contents;
gint i;
guint size = 0;
gdouble volume = 0.0;
/* select msg */
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT ||
@ -81,13 +81,6 @@ bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
if (size != 0) {
GstState state;
faces_value = gst_value_list_get_value (value, 0);
faces_structure = gst_value_get_structure (faces_value);
have_mouth_y = gst_structure_has_field (faces_structure, "mouth->y");
have_mouth_x = gst_structure_has_field (faces_structure, "mouth->x");
have_nose_y = gst_structure_has_field (faces_structure, "nose->y");
have_nose_x = gst_structure_has_field (faces_structure, "nose->x");
/* if paused, set to playing */
gst_element_get_state (GST_ELEMENT (playbin), &state, NULL,
GST_CLOCK_TIME_NONE);
@ -95,22 +88,33 @@ bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
gst_element_set_state (GST_ELEMENT (playbin), GST_STATE_PLAYING);
}
/* get the volume value */
g_object_get (G_OBJECT (playbin), "volume", &volume, NULL);
if (ctrlvol) {
gdouble volume;
/* media operation - hide your mouth for down the volume of the video */
if (have_mouth_y == 0 && have_mouth_x == 0) {
volume = volume - 0.5;
if (volume <= 0.5)
volume = 0.0;
g_object_set (G_OBJECT (playbin), "volume", volume, NULL);
}
/* media operation - hide your nose for up the volume of the video */
if (have_nose_y == 0 && have_nose_x == 0) {
volume = volume + 0.5;
if (volume >= 9.5)
volume = 10.0;
g_object_set (G_OBJECT (playbin), "volume", volume, NULL);
faces_value = gst_value_list_get_value (value, 0);
faces_structure = gst_value_get_structure (faces_value);
have_mouth_y = gst_structure_has_field (faces_structure, "mouth->y");
have_mouth_x = gst_structure_has_field (faces_structure, "mouth->x");
have_nose_y = gst_structure_has_field (faces_structure, "nose->y");
have_nose_x = gst_structure_has_field (faces_structure, "nose->x");
/* get the volume value */
g_object_get (G_OBJECT (playbin), "volume", &volume, NULL);
/* media operation - hide your mouth for down the volume of the video */
if (have_mouth_y == 0 && have_mouth_x == 0) {
volume = volume - 0.5;
if (volume <= 0.5)
volume = 0.0;
g_object_set (G_OBJECT (playbin), "volume", volume, NULL);
}
/* media operation - hide your nose for up the volume of the video */
if (have_nose_y == 0 && have_nose_x == 0) {
volume = volume + 0.5;
if (volume >= 9.5)
volume = 10.0;
g_object_set (G_OBJECT (playbin), "volume", volume, NULL);
}
}
/* if face is not detected */
} else {
@ -130,6 +134,23 @@ main (gint argc, gchar ** argv)
GstBus *bus;
gchar *uri;
GOptionEntry options[] = {
{"control-volume", 'c', 0, G_OPTION_ARG_NONE, &ctrlvol,
"Control the volume by hiding the nose or mouth", NULL},
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
ctx = g_option_context_new ("<video file>\n\nfacedetect test application.");
g_option_context_add_main_entries (ctx, options, NULL);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", err->message);
exit (1);
}
g_option_context_free (ctx);
if (argc < 2) {
fprintf (stderr, "oops, please give a file to play\n");
return -1;