4 * Builds a pipeline with two audiotestsources mixed with adder. Assigns
5 * controller patterns to the audio generators and test various trick modes.
7 * There are currently several issues:
8 * - adder only work with flushing seeks
9 * - there is a gap of almost 4 seconds before backwards playback
10 * - it is "waiting for free space"
11 * - using sync=false on the sink does not help (but has some other weird effects)
12 * - using fakesink shows same behaviour
14 * GST_DEBUG_NO_COLOR=1 GST_DEBUG="*:2,default:3,*sink*:4,*ring*:4,*pulse*:5" ./audio-trickplay 2>log.txt
15 * GST_DEBUG_NO_COLOR=1 GST_DEBUG="*:2,default:3,*sink*:4,*ring*:4,*pulse*:5" ./audio-trickplay -a -f 2>log-af.txt
19 #include <gst/controller/gstcontroller.h>
20 #include <gst/controller/gstinterpolationcontrolsource.h>
23 check_position (GstElement * elem, GstQuery * pos, const gchar * info)
25 if (gst_element_query (elem, pos)) {
27 gst_query_parse_position (pos, NULL, &play_pos);
28 GST_INFO ("pos : %" GST_TIME_FORMAT " %s", GST_TIME_ARGS (play_pos), info);
30 GST_WARNING ("position query failed");
35 print_buffer_ts (GstPad * pad, GstBuffer * buffer, gpointer user_data)
37 GST_DEBUG_OBJECT (pad, " ts: %" GST_TIME_FORMAT,
38 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
43 main (gint argc, gchar ** argv)
46 GstElement *src, *mix = NULL, *sink;
49 GstInterpolationControlSource *csource1, *csource2;
52 GstClockReturn wait_ret;
54 GstEvent *pos_seek, *rate_seek1, *rate_seek2;
59 gboolean use_adder = FALSE;
60 gboolean use_flush = FALSE;
61 gboolean be_quiet = FALSE;
63 gst_init (&argc, &argv);
64 gst_controller_init (&argc, &argv);
68 for (arg = 0; arg < argc; arg++) {
69 if (!strcmp (argv[arg], "-a"))
71 else if (!strcmp (argv[arg], "-f"))
73 else if (!strcmp (argv[arg], "-q"))
79 bin = gst_pipeline_new ("pipeline");
80 clock = gst_pipeline_get_clock (GST_PIPELINE (bin));
81 src = gst_element_factory_make ("audiotestsrc", NULL);
83 GST_WARNING ("need audiotestsrc from gst-plugins-base");
87 mix = gst_element_factory_make ("adder", NULL);
89 GST_WARNING ("need adder from gst-plugins-base");
93 sink = gst_element_factory_make ((be_quiet ? "fakesink" : "autoaudiosink"),
96 GST_WARNING ("need autoaudiosink from gst-plugins-base");
101 gst_bin_add_many (GST_BIN (bin), src, mix, sink, NULL);
102 if (!gst_element_link_many (src, mix, sink, NULL)) {
103 GST_WARNING ("can't link elements");
107 gst_bin_add_many (GST_BIN (bin), src, sink, NULL);
108 if (!gst_element_link_many (src, sink, NULL)) {
109 GST_WARNING ("can't link elements");
114 /* use 10 buffers per second */
115 g_object_set (src, "samplesperbuffer", 44100 / 10, NULL);
118 g_object_set (sink, "sync", TRUE, NULL);
121 src_pad = gst_element_get_static_pad (src, "src");
122 gst_pad_add_buffer_probe (src_pad, G_CALLBACK (print_buffer_ts), NULL);
123 gst_object_unref (src_pad);
125 /* add a controller to the source */
126 if (!(ctrl = gst_controller_new (G_OBJECT (src), "freq", "volume", NULL))) {
127 GST_WARNING ("can't control source element");
131 csource1 = gst_interpolation_control_source_new ();
132 csource2 = gst_interpolation_control_source_new ();
134 gst_controller_set_control_source (ctrl, "volume",
135 GST_CONTROL_SOURCE (csource1));
136 gst_controller_set_control_source (ctrl, "freq",
137 GST_CONTROL_SOURCE (csource2));
139 /* Set interpolation mode */
141 gst_interpolation_control_source_set_interpolation_mode (csource1,
142 GST_INTERPOLATE_LINEAR);
143 gst_interpolation_control_source_set_interpolation_mode (csource2,
144 GST_INTERPOLATE_LINEAR);
146 /* set control values */
147 g_value_init (&vol, G_TYPE_DOUBLE);
148 g_value_set_double (&vol, 0.0);
149 gst_interpolation_control_source_set (csource1, 0 * GST_SECOND, &vol);
150 g_value_set_double (&vol, 1.0);
151 gst_interpolation_control_source_set (csource1, 5 * GST_SECOND, &vol);
153 g_object_unref (csource1);
155 g_value_set_double (&vol, 220.0);
156 gst_interpolation_control_source_set (csource2, 0 * GST_SECOND, &vol);
157 g_value_set_double (&vol, 3520.0);
158 gst_interpolation_control_source_set (csource2, 2 * GST_SECOND, &vol);
159 g_value_set_double (&vol, 440.0);
160 gst_interpolation_control_source_set (csource2, 6 * GST_SECOND, &vol);
162 g_object_unref (csource2);
165 flags = use_flush ? GST_SEEK_FLAG_FLUSH : GST_SEEK_FLAG_NONE;
166 pos_seek = gst_event_new_seek (1.0, GST_FORMAT_TIME, flags,
167 GST_SEEK_TYPE_SET, 3 * GST_SECOND,
168 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
169 rate_seek1 = gst_event_new_seek (0.5, GST_FORMAT_TIME, flags,
170 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE,
171 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
172 rate_seek2 = gst_event_new_seek (-1.0, GST_FORMAT_TIME, flags,
173 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE,
174 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
176 /* prepare queries */
177 pos = gst_query_new_position (GST_FORMAT_TIME);
181 if (gst_element_set_state (bin, GST_STATE_PAUSED) != GST_STATE_CHANGE_FAILURE) {
183 /* run for 5 seconds */
185 gst_clock_new_single_shot_id (clock,
186 gst_clock_get_time (clock) + (5 * GST_SECOND));
188 if (gst_element_set_state (bin,
189 GST_STATE_PLAYING) != GST_STATE_CHANGE_FAILURE) {
190 check_position (bin, pos, "start");
191 if ((wait_ret = gst_clock_id_wait (clock_id, NULL)) != GST_CLOCK_OK) {
192 GST_WARNING ("clock_id_wait returned: %d", wait_ret);
195 gst_clock_id_unref (clock_id);
197 check_position (bin, pos, "before seek to new pos");
199 /* seek to 3:00 sec (back 2 sec) */
200 if (!gst_element_send_event (sink, pos_seek)) {
201 GST_WARNING ("element failed to seek to new position");
204 check_position (bin, pos, "after seek to new pos");
206 /* run for 2 seconds */
208 gst_clock_new_single_shot_id (clock,
209 gst_clock_get_time (clock) + (2 * GST_SECOND));
210 if ((wait_ret = gst_clock_id_wait (clock_id, NULL)) != GST_CLOCK_OK) {
211 GST_WARNING ("clock_id_wait returned: %d", wait_ret);
213 gst_clock_id_unref (clock_id);
215 check_position (bin, pos, "before slow down rate change");
217 /* change playback rate to 0.5 */
218 if (!gst_element_send_event (sink, rate_seek1)) {
219 GST_WARNING ("element failed to change playback rate");
222 check_position (bin, pos, "after slow down rate change");
224 /* run for 4 seconds */
226 gst_clock_new_single_shot_id (clock,
227 gst_clock_get_time (clock) + (4 * GST_SECOND));
228 if ((wait_ret = gst_clock_id_wait (clock_id, NULL)) != GST_CLOCK_OK) {
229 GST_WARNING ("clock_id_wait returned: %d", wait_ret);
231 gst_clock_id_unref (clock_id);
233 check_position (bin, pos, "before reverse rate change");
235 /* change playback rate to -1.0 */
236 if (!gst_element_send_event (sink, rate_seek2)) {
237 GST_WARNING ("element failed to change playback rate");
240 check_position (bin, pos, "after reverse rate change");
242 /* run for 7 seconds */
244 gst_clock_new_single_shot_id (clock,
245 gst_clock_get_time (clock) + (7 * GST_SECOND));
246 if ((wait_ret = gst_clock_id_wait (clock_id, NULL)) != GST_CLOCK_OK) {
247 GST_WARNING ("clock_id_wait returned: %d", wait_ret);
249 gst_clock_id_unref (clock_id);
251 check_position (bin, pos, "done");
253 gst_element_set_state (bin, GST_STATE_NULL);
257 gst_query_unref (pos);
258 g_object_unref (G_OBJECT (ctrl));
259 gst_object_unref (G_OBJECT (clock));
260 gst_object_unref (G_OBJECT (bin));