/****************************************************** * gst_v4l2_set_frequency(): * set frequency * return value: TRUE on success, FALSE on error ******************************************************/ gboolean gst_v4l2_set_frequency (GstV4l2Object * v4l2object, gint tunernum, gulong frequency) { struct v4l2_frequency freq = { 0, }; GstTunerChannel *channel; GST_DEBUG_OBJECT (v4l2object->element, "setting current tuner frequency to %lu", frequency); if (!GST_V4L2_IS_OPEN (v4l2object)) return FALSE; channel = gst_tuner_get_channel (GST_TUNER (v4l2object->element)); freq.tuner = tunernum; /* fill in type - ignore error */ v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_FREQUENCY, &freq); freq.frequency = frequency / channel->freq_multiplicator; if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_S_FREQUENCY, &freq) < 0) goto freq_failed; return TRUE; /* ERRORS */ freq_failed: { GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS, (_("Failed to set current tuner frequency for device '%s' to %lu Hz."), v4l2object->videodev, frequency), GST_ERROR_SYSTEM); return FALSE; } }
static void run_options (char opt) { int res; switch (opt) { case 'f': { GstTuner *tuner = GST_TUNER (source); GstTunerChannel *channel; guint freq; channel = gst_tuner_get_channel (tuner); freq = gst_tuner_get_frequency (tuner, channel); printf ("\ntype the new frequency (current = %u) (-1 to cancel): ", freq); res = scanf ("%u", &freq); if (res != 1 || freq != -1) gst_tuner_set_frequency (tuner, channel, freq); } break; case 'n': { GstTuner *tuner = GST_TUNER (source); const GList *item, *list; const GstTunerNorm *current_norm; GstTunerNorm *norm = NULL; gint index, next_norm; list = gst_tuner_list_norms (tuner); current_norm = gst_tuner_get_norm (tuner); printf ("\nlist of norms:\n"); for (item = list, index = 0; item != NULL; item = item->next, ++index) { norm = item->data; if (current_norm == norm) { printf (" * %u - %s\n", index, norm->label); } else { printf (" %u - %s\n", index, norm->label); } } printf ("\ntype the number of norm you want (-1 to cancel): "); res = scanf ("%d", &next_norm); if (res != 1 || next_norm < 0) { break; } if (index <= next_norm) { printf ("Norm %d not available\n", next_norm); break; } for (item = list, index = 0; item != NULL && index <= next_norm; item = item->next, ++index) { norm = item->data; } if (norm) gst_tuner_set_norm (tuner, norm); } break; case 'i': { GstTuner *tuner = GST_TUNER (source); const GList *item, *list; const GstTunerChannel *current_channel; GstTunerChannel *channel = NULL; gint index, next_channel; list = gst_tuner_list_channels (tuner); current_channel = gst_tuner_get_channel (tuner); printf ("\nlist of inputs:\n"); for (item = list, index = 0; item != NULL; item = item->next, ++index) { channel = item->data; if (current_channel == channel) { printf (" * %u - %s\n", index, channel->label); } else { printf (" %u - %s\n", index, channel->label); } } printf ("\ntype the number of input you want (-1 to cancel): "); res = scanf ("%d", &next_channel); if (res != 1 || next_channel < 0) { break; } if (index <= next_channel) { printf ("Input %d not available\n", next_channel); break; } for (item = list, index = 0; item != NULL && index <= next_channel; item = item->next, ++index) { channel = item->data; } if (channel) gst_tuner_set_channel (tuner, channel); } break; case 'e': gst_element_set_state (pipeline, GST_STATE_NULL); g_main_loop_quit (loop); printf ("Bye\n"); g_thread_exit (0); break; case 'c': { GstColorBalance *balance = GST_COLOR_BALANCE (source); const GList *controls; GstColorBalanceChannel *channel; const GList *item; gint index, new_value; controls = gst_color_balance_list_channels (balance); printf ("\n"); if (controls == NULL) { printf ("There is no list of colorbalance controls\n"); goto done; } if (controls) { printf ("list of controls:\n"); for (item = controls, index = 0; item != NULL; item = item->next, ++index) { channel = item->data; printf (" %u - %s (%d - %d) = %d\n", index, channel->label, channel->min_value, channel->max_value, gst_color_balance_get_value (balance, channel)); } printf ("\ntype the number of color control you want (-1 to cancel): "); res = scanf ("%d", &new_value); if (res != 1 || new_value == -1) break; for (item = controls, index = 0; item != NULL && index <= new_value; item = item->next, ++index) { channel = item->data; } printf (" %u - %s (%d - %d) = %d, type the new value: ", index - 1, channel->label, channel->min_value, channel->max_value, gst_color_balance_get_value (balance, channel)); res = scanf ("%d", &new_value); if (res != 1 || new_value == -1) break; gst_color_balance_set_value (balance, channel, new_value); } } case 'v': { GstVideoOrientation *vidorient = GST_VIDEO_ORIENTATION (source); gboolean flip = FALSE; gint center = 0; printf ("\n"); if (gst_video_orientation_get_hflip (vidorient, &flip)) { gint new_value; printf ("Horizontal flip is %s\n", flip ? "on" : "off"); printf ("\ntype 1 to toggle (-1 to cancel): "); res = scanf ("%d", &new_value); if (res != 1 || new_value == 1) { flip = !flip; if (gst_video_orientation_set_hflip (vidorient, flip)) { gst_video_orientation_get_hflip (vidorient, &flip); printf ("Now horizontal flip is %s\n", flip ? "on" : "off"); } else { printf ("Error toggling horizontal flip\n"); } } else { } } else { printf ("Horizontal flip control not available\n"); } if (gst_video_orientation_get_vflip (vidorient, &flip)) { gint new_value; printf ("\nVertical flip is %s\n", flip ? "on" : "off"); printf ("\ntype 1 to toggle (-1 to cancel): "); res = scanf ("%d", &new_value); if (res != 1 || new_value == 1) { flip = !flip; if (gst_video_orientation_set_vflip (vidorient, flip)) { gst_video_orientation_get_vflip (vidorient, &flip); printf ("Now vertical flip is %s\n", flip ? "on" : "off"); } else { printf ("Error toggling vertical flip\n"); } } else { } } else { printf ("Vertical flip control not available\n"); } if (gst_video_orientation_get_hcenter (vidorient, ¢er)) { printf ("Horizontal center is %d\n", center); printf ("\ntype the new horizontal center value (-1 to cancel): "); res = scanf ("%d", ¢er); if (res != 1 || center != -1) { if (gst_video_orientation_set_hcenter (vidorient, center)) { gst_video_orientation_get_hcenter (vidorient, ¢er); printf ("Now horizontal center is %d\n", center); } else { printf ("Error setting horizontal center\n"); } } else { } } else { printf ("Horizontal center control not available\n"); } if (gst_video_orientation_get_vcenter (vidorient, ¢er)) { printf ("Vertical center is %d\n", center); printf ("\ntype the new vertical center value (-1 to cancel): "); res = scanf ("%d", ¢er); if (res != 1 || center != -1) { if (gst_video_orientation_set_vcenter (vidorient, center)) { gst_video_orientation_get_vcenter (vidorient, ¢er); printf ("Now vertical center is %d\n", center); } else { printf ("Error setting vertical center\n"); } } else { } } else { printf ("Vertical center control not available\n"); } } break; break; default: if (opt != 10) printf ("error: invalid option %c", opt); break; } done: return; }