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