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Remove deinterlacing stuff. This is a Color Balance tutorial from now on.

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This commit is contained in:
Xavi Artigas 2012-06-25 17:31:35 +02:00
parent 87b9d58e95
commit 989e16d366
1 changed files with 5 additions and 42 deletions
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47
gst-sdk/tutorials/playback-tutorial-5.c
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@ -7,11 +7,6 @@ typedef struct _CustomData {
GMainLoop *loop;
} CustomData;
/* playbin2 flags */
typedef enum {
GST_PLAY_FLAG_DEINTERLACE = (1 << 9)
} GstPlayFlags;
/* Process a color balance command */
static void update_color_channel (const gchar *channel_name, gboolean increase, GstColorBalance *cb) {
gdouble step;
@ -38,42 +33,17 @@ static void update_color_channel (const gchar *channel_name, gboolean increase,
if (increase) {
value = (gint)(value + step);
if (value > channel->max_value)
value = channel->max_value;
value = channel->max_value;
} else {
value = (gint)(value - step);
if (value < channel->min_value)
value = channel->min_value;
value = channel->min_value;
}
gst_color_balance_set_value (cb, channel, value);
}
/* Toggle the deinterlacing flag */
static void toggle_deinterlace (GstElement *pipeline) {
gint flags;
gint64 current_position = GST_CLOCK_TIME_NONE;
GstFormat format = GST_FORMAT_TIME;
/* Find current position, since it will be lost when we stop */
gst_element_query_position (pipeline, &format, &current_position);
/* Stop */
gst_element_set_state (pipeline, GST_STATE_READY);
/* Toggle deinterlacing flag (it will be ignored while PLAYING) */
g_object_get (pipeline, "flags", &flags, NULL);
flags ^= GST_PLAY_FLAG_DEINTERLACE;
g_object_set (pipeline, "flags", flags, NULL);
/* Resume */
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Wait until the state change takes effect */
gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);
/* Set current position, if we were able to recover it previously */
if (GST_CLOCK_TIME_IS_VALID (current_position)) {
gst_element_seek_simple (pipeline, format, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, current_position);
}
}
/* Output the current values of all Color Balance channels and the Deinterlace flag */
/* Output the current values of all Color Balance channels */
static void print_current_values (GstElement *pipeline) {
gint flags;
const GList *channels, *l;
/* Output Color Balance values */
@ -84,10 +54,7 @@ static void print_current_values (GstElement *pipeline) {
g_print ("%s: %3d%% ", channel->label,
100 * (value - channel->min_value) / (channel->max_value - channel->min_value));
}
/* Output Deinterlace flag value */
g_object_get (pipeline, "flags", &flags, NULL);
g_print ("Deinterlacing: %s\n", flags & GST_PLAY_FLAG_DEINTERLACE ? "ON" : "OFF");
g_print ("\n");
}
/* Process keyboard input */
@ -111,9 +78,6 @@ static gboolean handle_keyboard (GIOChannel *source, GIOCondition cond, CustomDa
case 's':
update_color_channel ("SATURATION", g_ascii_isupper (str[0]), GST_COLOR_BALANCE (data->pipeline));
break;
case 'd':
toggle_deinterlace (data->pipeline);
break;
case 'q':
g_main_loop_quit (data->loop);
break;
@ -146,11 +110,10 @@ int main(int argc, char *argv[]) {
" 'B' to increase brightness, 'b' to decrease brightness\n"
" 'H' to increase hue, 'h' to decrease hue\n"
" 'S' to increase saturation, 's' to decrease saturation\n"
" 'D' to toggle deinterlacing ON and OFF\n"
" 'Q' to quit\n");
/* Build the pipeline */
data.pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480i.avi", NULL);
data.pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
/* Add a keyboard watch so we get notified of keystrokes */
#ifdef _WIN32