mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-03 17:22:29 +00:00
+ simplifying the filter's structure, but it's still not working perfectly + starting to wonder if/how midi integrati...
Original commit message from CVS: + simplifying the filter's structure, but it's still not working perfectly + starting to wonder if/how midi integration is possible ...
This commit is contained in:
Leif Johnson
parent
bea8637738
commit
7e761258c1
4 changed files with 199 additions and 216 deletions
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@ -3,24 +3,29 @@
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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#define NUM_BEATS 16
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#define SPEED 1e-9
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#define NUM_BEATS 12
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GtkWidget *window, *vbox, *beat_box, *button_box;
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GtkWidget *play_button, *clear_button, *reset_button, *quit_button;
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GtkWidget **beat_button;
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GtkWidget *speed_scale;
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GtkObject *speed_adj;
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GstElement *src, *mad, *pod, *osssink, *pipeline;
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GstElement *src, *mad, *pod, *sink, *pipeline;
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GstClock *element_clock;
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GSList *beats;
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guint32 *beats;
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void
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played (GstElement *pod, gpointer data)
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{
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g_print("Played beat at %u\n",
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((guint) (gst_clock_get_time(element_clock) *
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(GTK_ADJUSTMENT(speed_adj))->value * SPEED)) % NUM_BEATS);
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gint i;
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g_print("Played beat at %02u, beats are ",
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(guint) (gst_clock_get_time(element_clock) / GST_SECOND *
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(GTK_ADJUSTMENT(speed_adj))->value) % NUM_BEATS);
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for (i = 0; i <= NUM_BEATS / 32; i++) g_print ("%08x ", beats[i]);
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g_print("\n");
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}
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void
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@ -47,18 +52,19 @@ reset (GtkButton *button, gpointer data)
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void
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beat (GtkToggleButton *button, gpointer data)
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{
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guint b = GPOINTER_TO_UINT(data);
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if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button)))
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beats = g_slist_append(beats, data);
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beats[b / 32] |= 1 << (b % 32);
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else
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beats = g_slist_remove(beats, data);
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g_object_set(G_OBJECT(pod), "tick-list", beats, NULL);
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beats[b / 32] &= ~ (1 << (b % 32));
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}
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void
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speed (GtkAdjustment *adjustment, gpointer data)
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{
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g_object_set(G_OBJECT(pod), "clock-speed", adjustment->value * SPEED, NULL);
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/*gst_clock_set_speed(element_clock, adjustment->value * SPEED);*/
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g_object_set(G_OBJECT(pod), "tick-rate", adjustment->value, NULL);
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/*gst_clock_set_speed(element_clock, adjustment->value);*/
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}
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void
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@ -67,17 +73,21 @@ setup_pipeline (gchar *filename)
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src = gst_element_factory_make("filesrc", "filesrc");
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mad = gst_element_factory_make("mad", "mad");
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pod = gst_element_factory_make("playondemand", "playondemand");
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osssink = gst_element_factory_make("osssink", "osssink");
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sink = gst_element_factory_make("alsasink", "alsasink");
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g_object_set(G_OBJECT(src), "location", filename, NULL);
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g_object_set(G_OBJECT(osssink), "fragment", 0x00180008, NULL);
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g_object_set(G_OBJECT(sink), "period-count", 32,
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"period-size", 512, NULL);
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g_object_set(G_OBJECT(pod), "total-ticks", NUM_BEATS,
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"clock-speed", SPEED, NULL);
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"tick-rate", 1.0,
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"max-plays", NUM_BEATS * 2, NULL);
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g_object_get(G_OBJECT(pod), "ticks", &beats, NULL);
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pipeline = gst_pipeline_new("app");
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gst_bin_add_many(GST_BIN(pipeline), src, mad, pod, osssink, NULL);
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gst_element_link_many(src, mad, pod, osssink, NULL);
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gst_bin_add_many(GST_BIN(pipeline), src, mad, pod, sink, NULL);
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gst_element_link_many(src, mad, pod, sink, NULL);
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element_clock = gst_bin_get_clock(GST_BIN(pipeline));
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gst_element_set_clock(GST_ELEMENT(pod), element_clock);
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@ -106,9 +116,9 @@ setup_gui (void)
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quit_button = gtk_button_new_with_label("Quit");
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for (i = 0; i < NUM_BEATS; i++)
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beat_button[i] = gtk_toggle_button_new_with_label(g_strdup_printf("%2d", i));
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beat_button[i] = gtk_toggle_button_new_with_label(g_strdup_printf("%2d", i+1));
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speed_adj = gtk_adjustment_new(1, 0.0, 2, 0.01, 0.1, 0.0);
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speed_adj = gtk_adjustment_new(1, 0.0, 10.0, 0.1, 1.0, 0.0);
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speed_scale = gtk_hscale_new(GTK_ADJUSTMENT(speed_adj));
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gtk_scale_set_digits(GTK_SCALE(speed_scale), 4);
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gtk_range_set_update_policy(GTK_RANGE(speed_scale), GTK_UPDATE_DISCONTINUOUS);
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@ -140,19 +150,7 @@ setup_gui (void)
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g_signal_connect(G_OBJECT(beat_button[i]), "toggled", G_CALLBACK(beat), GUINT_TO_POINTER(i));
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/* show the gui. */
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gtk_widget_show(play_button);
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gtk_widget_show(clear_button);
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gtk_widget_show(reset_button);
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gtk_widget_show(quit_button);
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for (i = 0; i < NUM_BEATS; i++)
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gtk_widget_show(beat_button[i]);
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gtk_widget_show(beat_box);
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gtk_widget_show(button_box);
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gtk_widget_show(speed_scale);
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gtk_widget_show(vbox);
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gtk_widget_show(window);
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gtk_widget_show_all(window);
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gtk_idle_add((GtkFunction)gst_bin_iterate, pipeline);
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}
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@ -5,18 +5,23 @@ _TYPE_ *data_in, *data_out, *filter_data;
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filter_data = (_TYPE_ *) filter->buffer;
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num_filter = filter->buffer_bytes / sizeof(_TYPE_);
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/******************************************************************************/
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/* see if we've got any events coming through ... */
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do {
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while (GST_IS_EVENT(in)) {
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/****************************************************************************/
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/* see if we've got any events coming through ... */
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while (! filter->eos && GST_IS_EVENT(in)) {
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if (GST_EVENT_TYPE(in) == GST_EVENT_EOS) {
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gst_event_unref(in);
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filter->eos = TRUE;
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} else if ((GST_EVENT_TYPE(in) == GST_EVENT_SEEK) ||
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(GST_EVENT_TYPE(in) == GST_EVENT_FLUSH)) {
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filter->eos = FALSE;
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filter->write = 0;
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} else {
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if ((GST_EVENT_TYPE(in) == GST_EVENT_SEEK) ||
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(GST_EVENT_TYPE(in) == GST_EVENT_FLUSH))
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filter->write = 0;
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gst_pad_push(filter->srcpad, in);
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}
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@ -24,76 +29,81 @@ do {
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}
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/****************************************************************************/
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/* first handle data from the input buffer. */
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/* handle data from the input buffer. */
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/* only update the input if there hasn't been an eos yet. */
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if (! filter->eos) {
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register guint j, w = filter->write;
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data_in = (_TYPE_ *) GST_BUFFER_DATA(in);
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num_in = GST_BUFFER_SIZE(in) / sizeof(_TYPE_);
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w = filter->write;
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for (j = 0; (j < num_in) && (w+j < num_filter); j++)
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filter_data[w+j] = data_in[j];
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/* copy the input data to the filter's internal buffer. */
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for (j = 0; (j < num_in) && ((w + j) < num_filter); j++)
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filter_data[(w + j) % num_filter] = data_in[j];
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filter->write += j;
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filter->write = (w + j) % num_filter;
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if ((w + j) >= num_filter)
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filter->eos = TRUE;
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if (filter->write >= num_filter) filter->eos = TRUE;
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out = in;
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} else {
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j = num_filter;
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w = 0;
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out = gst_buffer_new_from_pool(filter->bufpool, 0, 0);
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}
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/****************************************************************************/
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/* check to see if we have to add a new play pointer. */
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/* check to see if we have to add new play pointers. */
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if (filter->clock) {
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current_tick = ((guint) (gst_clock_get_time(filter->clock) *
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filter->clock_speed)) % filter->total_ticks;
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register gint t, tick_offset;
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if (current_tick != last_tick) {
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/* now we go through the tick list and play samples */
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tick_list = filter->tick_list;
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while (tick_list) {
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tick = GPOINTER_TO_UINT(tick_list->data);
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if (current_tick == tick)
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play_on_demand_add_play_pointer(filter, 0);
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else if (GST_POD_TICK_ELAPSED(tick, current_tick, last_tick))
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play_on_demand_add_play_pointer(filter, GST_POD_SAMPLE_OFFSET(filter, current_tick - tick));
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tick_list = g_slist_next(tick_list);
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}
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last_tick = current_tick;
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guint total_ticks = filter->total_ticks;
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guint current_tick = \
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((guint) (gst_clock_get_time(filter->clock) * filter->tick_rate /
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GST_SECOND)) % total_ticks;
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/* for some reason modulo arithmetic isn't working for me here, i suspect
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some unsigned/signed voodoo. but it's probably safe to do this with an if
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statement since it doesn't happen all that often ... */
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tick_offset = current_tick - last_tick;
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if (tick_offset < 0) tick_offset += total_ticks;
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for (tick_offset -= 1, t = current_tick - tick_offset;
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tick_offset >= 0;
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tick_offset--, t--) {
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if (t < 0) t += total_ticks;
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if (filter->ticks[t / 32] & (1 << t % 32))
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play_on_demand_add_play_pointer(
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filter, filter->rate * tick_offset / filter->tick_rate);
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}
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last_tick = current_tick;
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}
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/****************************************************************************/
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/* now handle output data. */
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/* handle output data. */
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data_out = (_TYPE_ *) GST_BUFFER_DATA(out);
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num_out = GST_BUFFER_SIZE(out) / sizeof(_TYPE_);
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{
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register guint k, p;
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for (k = 0; k < num_out; k++)
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data_out[k] = zero;
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data_out = (_TYPE_ *) GST_BUFFER_DATA(out);
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num_out = GST_BUFFER_SIZE(out) / sizeof(_TYPE_);
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/* output play pointer data. */
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if (! filter->mute)
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for (t = 0; t < filter->max_plays; t++) {
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offset = filter->plays[t];
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for (k = 0; k < num_out; k++) data_out[k] = zero;
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for (p = 0; p < filter->max_plays; p++) {
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guint offset = filter->plays[p];
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if (offset != G_MAXUINT) {
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for (k = 0; (k < num_out) && (offset + k < num_filter); k++)
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data_out[k] = CLAMP(data_out[k] + filter_data[offset + k], min, max);
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if ((offset + k) == num_filter)
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filter->plays[t] = G_MAXUINT;
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else
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filter->plays[t] = offset + k;
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/* only copy audio data if the element's not muted. */
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if (! filter->mute)
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for (k = 0; (k < num_out) && (offset+k < num_filter); k++)
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data_out[k] = CLAMP(data_out[k] + filter_data[offset+k], min, max);
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/* update the play pointer. k > 0 even if the filter is muted. */
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filter->plays[p] = (offset+k >= num_filter) ? G_MAXUINT : offset + k;
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}
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}
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@ -102,9 +112,8 @@ do {
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gst_pad_push(filter->srcpad, out);
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if (! filter->eos)
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in = gst_pad_pull(filter->sinkpad);
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in = (! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
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gst_element_interrupt (GST_ELEMENT (filter));
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if (gst_element_interrupt (GST_ELEMENT (filter))) break;
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} while (TRUE);
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@ -24,11 +24,14 @@
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#include "gstplayondemand.h"
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/* in these files, a 'tick' is a discrete unit of time, usually around the 1ms
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* range. a tick is not divisible into smaller units of time. 1ms is probably
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* way beyond what a real computer can actually keep track of, but hey ... */
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/* some default values */
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#define GST_POD_MAX_PLAYS 100 /* maximum simultaneous plays */
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#define GST_POD_BUFFER_TIME 5.0 /* buffer length in seconds */
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#define GST_POD_CLOCK_SPEED 1e-8 /* 0.1 sec/tick default */
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#define GST_POD_TICK_RATE 1e-6 /* ticks per second */
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/* buffer pool fallback values ... use if no buffer pool is available */
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#define GST_POD_BUFPOOL_SIZE 4096
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@ -88,6 +91,7 @@ static void play_on_demand_class_init (GstPlayOnDemandClass *klass);
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static void play_on_demand_init (GstPlayOnDemand *filter);
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static void play_on_demand_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void play_on_demand_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void play_on_demand_dispose (GObject *object);
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/* GStreamer functionality */
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static GstBufferPool* play_on_demand_get_bufferpool (GstPad *pad);
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@ -144,9 +148,9 @@ enum {
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PROP_MUTE,
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PROP_BUFFER_TIME,
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PROP_MAX_PLAYS,
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PROP_CLOCK_SPEED,
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PROP_TICK_RATE,
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PROP_TOTAL_TICKS,
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PROP_TICK_LIST,
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PROP_TICKS,
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};
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static guint gst_pod_filter_signals[LAST_SIGNAL] = { 0 };
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@ -163,40 +167,24 @@ play_on_demand_class_init (GstPlayOnDemandClass *klass)
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gstelement_class = (GstElementClass *) klass;
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gst_pod_filter_signals[PLAYED_SIGNAL] =
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g_signal_new("played",
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G_TYPE_FROM_CLASS(klass),
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G_SIGNAL_RUN_LAST,
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g_signal_new("played", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET(GstPlayOnDemandClass, played),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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gst_pod_filter_signals[PLAY_SIGNAL] =
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g_signal_new("play",
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G_TYPE_FROM_CLASS(klass),
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G_SIGNAL_RUN_LAST,
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g_signal_new("play", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET(GstPlayOnDemandClass, play),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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gst_pod_filter_signals[CLEAR_SIGNAL] =
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g_signal_new("clear",
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G_TYPE_FROM_CLASS(klass),
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G_SIGNAL_RUN_LAST,
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g_signal_new("clear", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET(GstPlayOnDemandClass, clear),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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gst_pod_filter_signals[RESET_SIGNAL] =
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g_signal_new("reset",
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G_TYPE_FROM_CLASS(klass),
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G_SIGNAL_RUN_LAST,
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g_signal_new("reset", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET(GstPlayOnDemandClass, reset),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
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klass->play = play_on_demand_play_handler;
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klass->clear = play_on_demand_clear_handler;
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@ -206,45 +194,33 @@ play_on_demand_class_init (GstPlayOnDemandClass *klass)
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gobject_class->set_property = play_on_demand_set_property;
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gobject_class->get_property = play_on_demand_get_property;
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gobject_class->dispose = play_on_demand_dispose;
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gstelement_class->set_clock = play_on_demand_set_clock;
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g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_MUTE,
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g_param_spec_boolean("mute", "Silence output",
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"Do not output any sound",
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FALSE, G_PARAM_READWRITE));
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g_param_spec_boolean("mute", "Silence output", "Do not output any sound",
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FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_BUFFER_TIME,
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g_param_spec_float("buffer-time", "Buffer length in seconds",
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"Number of seconds of audio the buffer holds",
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0.0, G_MAXUINT - 2, GST_POD_BUFFER_TIME, G_PARAM_READWRITE));
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g_param_spec_float("buffer-time", "Buffer length in seconds", "Number of seconds of audio the buffer holds",
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0.0, G_MAXUINT / GST_AUDIO_MAX_RATE - 10, GST_POD_BUFFER_TIME, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_MAX_PLAYS,
|
||||
g_param_spec_uint("plays", "Maximum simultaneous playback",
|
||||
"Maximum allowed number of simultaneous plays from the buffer",
|
||||
1, G_MAXUINT, GST_POD_MAX_PLAYS, G_PARAM_READWRITE));
|
||||
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_CLOCK_SPEED,
|
||||
g_param_spec_float("clock-speed", "Clock speed (ticks/second)",
|
||||
"The relative speed of a musical tick",
|
||||
0, G_MAXFLOAT, 1, G_PARAM_READWRITE));
|
||||
|
||||
g_param_spec_uint("max-plays", "Maximum simultaneous playbacks", "Maximum allowed number of simultaneous plays from the buffer",
|
||||
1, G_MAXUINT, GST_POD_MAX_PLAYS, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TICK_RATE,
|
||||
g_param_spec_float("tick-rate", "Tick rate (ticks/second)", "The rate of musical ticks, the smallest time unit in a song",
|
||||
0, G_MAXFLOAT, GST_POD_TICK_RATE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TOTAL_TICKS,
|
||||
g_param_spec_uint("total-ticks", "Total number of ticks",
|
||||
"Total number of ticks (only relevant for tick lists)",
|
||||
1, G_MAXUINT, 1, G_PARAM_READWRITE));
|
||||
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TICK_LIST,
|
||||
g_param_spec_pointer("tick-list", "List of ticks to play",
|
||||
"A list of ticks (musical times) at which to play the sample",
|
||||
G_PARAM_WRITABLE));
|
||||
g_param_spec_uint("total-ticks", "Total number of ticks", "Total number of ticks in the tick array",
|
||||
1, G_MAXUINT, 1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
|
||||
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TICKS,
|
||||
g_param_spec_pointer("ticks", "Ticks to play sample on", "An array of ticks (musical times) at which to play the sample",
|
||||
G_PARAM_READWRITE));
|
||||
}
|
||||
|
||||
static void
|
||||
play_on_demand_init (GstPlayOnDemand *filter)
|
||||
{
|
||||
guint i;
|
||||
|
||||
filter->srcpad = gst_pad_new_from_template(play_on_demand_src_factory(), "src");
|
||||
filter->sinkpad = gst_pad_new_from_template(play_on_demand_sink_factory(), "sink");
|
||||
|
||||
|
|
@ -258,23 +234,14 @@ play_on_demand_init (GstPlayOnDemand *filter)
|
|||
|
||||
filter->clock = NULL;
|
||||
|
||||
/* filter properties */
|
||||
filter->mute = FALSE;
|
||||
filter->buffer_time = GST_POD_BUFFER_TIME;
|
||||
filter->max_plays = GST_POD_MAX_PLAYS;
|
||||
filter->clock_speed = GST_POD_CLOCK_SPEED;
|
||||
filter->total_ticks = 1;
|
||||
filter->tick_list = NULL;
|
||||
filter->rate = 0;
|
||||
|
||||
filter->ticks = g_new(guint32, filter->total_ticks / 32 + 1);
|
||||
filter->plays = g_new(guint, filter->max_plays);
|
||||
|
||||
/* internal buffer stuff */
|
||||
play_on_demand_resize_buffer(filter);
|
||||
filter->eos = FALSE;
|
||||
|
||||
/* play pointers, stored as an array of buffer offsets */
|
||||
filter->write = 0;
|
||||
filter->plays = g_new(guint, filter->max_plays);
|
||||
for (i = 0; i < filter->max_plays; i++)
|
||||
filter->plays[i] = G_MAXUINT;
|
||||
play_on_demand_clear_handler(GST_ELEMENT(filter));
|
||||
play_on_demand_reset_handler(GST_ELEMENT(filter));
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -284,6 +251,7 @@ play_on_demand_set_property (GObject *object, guint prop_id,
|
|||
GstPlayOnDemand *filter;
|
||||
register guint i;
|
||||
guint new_size, min_size, *new_plays;
|
||||
guint *new_ticks;
|
||||
|
||||
g_return_if_fail(GST_IS_PLAYONDEMAND(object));
|
||||
filter = GST_PLAYONDEMAND(object);
|
||||
|
|
@ -296,10 +264,9 @@ play_on_demand_set_property (GObject *object, guint prop_id,
|
|||
filter->buffer_time = g_value_get_float(value);
|
||||
play_on_demand_resize_buffer(filter);
|
||||
|
||||
/* clear out now-invalid play pointers, if there are any. */
|
||||
/* clear out now-invalid play pointers */
|
||||
for (i = 0; i < filter->max_plays; i++)
|
||||
if (filter->plays[i] > filter->buffer_bytes)
|
||||
filter->plays[i] = G_MAXUINT;
|
||||
filter->plays[i] = G_MAXUINT;
|
||||
|
||||
break;
|
||||
case PROP_MAX_PLAYS:
|
||||
|
|
@ -308,21 +275,35 @@ play_on_demand_set_property (GObject *object, guint prop_id,
|
|||
|
||||
new_plays = g_new(guint, new_size);
|
||||
for (i = 0; i < min_size; i++) new_plays[i] = filter->plays[i];
|
||||
for (i = min_size; i < filter->max_plays; i++) new_plays[i] = G_MAXUINT;
|
||||
for (i = min_size; i < new_size; i++) new_plays[i] = G_MAXUINT;
|
||||
|
||||
g_free(filter->plays);
|
||||
filter->plays = new_plays;
|
||||
filter->max_plays = new_size;
|
||||
|
||||
break;
|
||||
case PROP_CLOCK_SPEED:
|
||||
filter->clock_speed = g_value_get_float(value);
|
||||
case PROP_TICK_RATE:
|
||||
filter->tick_rate = g_value_get_float(value);
|
||||
break;
|
||||
case PROP_TOTAL_TICKS:
|
||||
filter->total_ticks = g_value_get_uint(value);
|
||||
new_size = g_value_get_uint(value);
|
||||
min_size = (new_size < filter->total_ticks) ? new_size : filter->total_ticks;
|
||||
|
||||
new_ticks = g_new(guint32, new_size / 32 + 1);
|
||||
for (i = 0; i <= min_size / 32; i++) new_ticks[i] = filter->ticks[i];
|
||||
for (i = min_size / 32 + 1; i <= new_size / 32; i++) new_ticks[i] = 0;
|
||||
|
||||
g_free(filter->ticks);
|
||||
filter->ticks = new_ticks;
|
||||
filter->total_ticks = new_size;
|
||||
|
||||
break;
|
||||
case PROP_TICK_LIST:
|
||||
filter->tick_list = (GSList *) g_value_get_pointer(value);
|
||||
case PROP_TICKS:
|
||||
new_ticks = (guint *) g_value_get_pointer(value);
|
||||
if (new_ticks) {
|
||||
g_free(filter->ticks);
|
||||
filter->ticks = new_ticks;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
@ -348,18 +329,33 @@ play_on_demand_get_property (GObject *object, guint prop_id,
|
|||
case PROP_MAX_PLAYS:
|
||||
g_value_set_uint(value, filter->max_plays);
|
||||
break;
|
||||
case PROP_CLOCK_SPEED:
|
||||
g_value_set_float(value, filter->clock_speed);
|
||||
case PROP_TICK_RATE:
|
||||
g_value_set_float(value, filter->tick_rate);
|
||||
break;
|
||||
case PROP_TOTAL_TICKS:
|
||||
g_value_set_uint(value, filter->total_ticks);
|
||||
break;
|
||||
case PROP_TICKS:
|
||||
g_value_set_pointer(value, (gpointer) filter->ticks);
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
play_on_demand_dispose (GObject *object)
|
||||
{
|
||||
GstPlayOnDemand *filter = GST_PLAYONDEMAND (object);
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose (object);
|
||||
|
||||
g_free (filter->ticks);
|
||||
g_free (filter->plays);
|
||||
g_free (filter->buffer);
|
||||
}
|
||||
|
||||
static GstBufferPool*
|
||||
play_on_demand_get_bufferpool (GstPad *pad)
|
||||
{
|
||||
|
|
@ -380,7 +376,7 @@ play_on_demand_pad_link (GstPad *pad, GstCaps *caps)
|
|||
filter = GST_PLAYONDEMAND(GST_PAD_PARENT(pad));
|
||||
|
||||
gst_caps_get_string(caps, "format", &format);
|
||||
gst_caps_get_int(caps, "rate", &filter->rate);
|
||||
gst_caps_get_int(caps, "rate", &filter->rate);
|
||||
gst_caps_get_int(caps, "channels", &filter->channels);
|
||||
|
||||
if (strcmp(format, "int") == 0) {
|
||||
|
|
@ -397,21 +393,22 @@ play_on_demand_pad_link (GstPad *pad, GstCaps *caps)
|
|||
return GST_PAD_LINK_DELAYED;
|
||||
}
|
||||
|
||||
/* clock check macros. in these macros,
|
||||
f == filter
|
||||
t == tick in question
|
||||
c == current tick (from the clock)
|
||||
l == last tick (last tick when clock was checked)
|
||||
dt == ticks between c and t */
|
||||
#define GST_POD_SAMPLE_OFFSET(f, dt) \
|
||||
((guint) (dt * (f)->rate / (f)->clock_speed))
|
||||
inline static void
|
||||
play_on_demand_add_play_pointer (GstPlayOnDemand *filter, guint pos)
|
||||
{
|
||||
register guint i;
|
||||
|
||||
/* play a sample if the tick in question came between the last time we checked
|
||||
the clock and the current clock time. only looks complicated because the last
|
||||
clock time could have been at the end of the total_ticks, so the clock might
|
||||
have wrapped around ... */
|
||||
#define GST_POD_TICK_ELAPSED(t, c, l) \
|
||||
(((l < c) && (l < t) && (t < c)) || ((l > c) && ((l < t) || (t < c))))
|
||||
if (filter->rate && ((filter->buffer_time * filter->rate) > pos)) {
|
||||
for (i = 0; i < filter->max_plays; i++) {
|
||||
if (filter->plays[i] == G_MAXUINT) {
|
||||
filter->plays[i] = pos;
|
||||
/* emit a signal to indicate a sample being played */
|
||||
g_signal_emit(filter, gst_pod_filter_signals[PLAYED_SIGNAL], 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
play_on_demand_loop (GstElement *elem)
|
||||
|
|
@ -419,37 +416,30 @@ play_on_demand_loop (GstElement *elem)
|
|||
GstPlayOnDemand *filter = GST_PLAYONDEMAND(elem);
|
||||
guint num_in, num_out, num_filter;
|
||||
GstBuffer *in, *out;
|
||||
register guint j, k, t;
|
||||
guint w, offset;
|
||||
|
||||
/* variables for clock check. */
|
||||
static guint last_tick = 0;
|
||||
GSList *tick_list;
|
||||
guint tick, current_tick;
|
||||
|
||||
g_return_if_fail(filter != NULL);
|
||||
g_return_if_fail(GST_IS_PLAYONDEMAND(filter));
|
||||
|
||||
filter->bufpool = gst_pad_get_bufferpool(filter->srcpad);
|
||||
|
||||
if (filter->bufpool == NULL) {
|
||||
if (filter->bufpool == NULL)
|
||||
filter->bufpool = gst_buffer_pool_get_default(GST_POD_BUFPOOL_SIZE,
|
||||
GST_POD_BUFPOOL_NUM);
|
||||
}
|
||||
|
||||
in = gst_pad_pull(filter->sinkpad);
|
||||
|
||||
if (filter->format == GST_PLAYONDEMAND_FORMAT_INT) {
|
||||
if (filter->width == 16) {
|
||||
gint16 min = -32768;
|
||||
gint16 max = 32767;
|
||||
gint16 min = 0xffff;
|
||||
gint16 max = 0x7fff;
|
||||
gint16 zero = 0;
|
||||
#define _TYPE_ gint16
|
||||
#include "filter.func"
|
||||
#undef _TYPE_
|
||||
} else if (filter->width == 8) {
|
||||
gint8 min = -128;
|
||||
gint8 max = 127;
|
||||
gint8 min = 0xff;
|
||||
gint8 max = 0x7f;
|
||||
gint8 zero = 0;
|
||||
#define _TYPE_ gint8
|
||||
#include "filter.func"
|
||||
|
|
@ -493,6 +483,7 @@ static void
|
|||
play_on_demand_clear_handler (GstElement *elem)
|
||||
{
|
||||
GstPlayOnDemand *filter;
|
||||
register guint i;
|
||||
|
||||
g_return_if_fail(elem != NULL);
|
||||
g_return_if_fail(GST_IS_PLAYONDEMAND(elem));
|
||||
|
|
@ -500,6 +491,9 @@ play_on_demand_clear_handler (GstElement *elem)
|
|||
|
||||
filter->write = 0;
|
||||
filter->eos = FALSE;
|
||||
|
||||
for (i = 0; i < filter->max_plays; i++) filter->plays[i] = G_MAXUINT;
|
||||
for (i = 0; i < filter->buffer_bytes; i++) filter->buffer[i] = 0;
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -508,39 +502,21 @@ play_on_demand_reset_handler (GstElement *elem)
|
|||
GstPlayOnDemand *filter;
|
||||
register guint i;
|
||||
|
||||
play_on_demand_clear_handler (elem);
|
||||
|
||||
g_return_if_fail(elem != NULL);
|
||||
g_return_if_fail(GST_IS_PLAYONDEMAND(elem));
|
||||
filter = GST_PLAYONDEMAND(elem);
|
||||
|
||||
for (i = 0; i < filter->max_plays; i++) {
|
||||
filter->plays[i] = G_MAXUINT;
|
||||
}
|
||||
|
||||
filter->write = 0;
|
||||
filter->eos = FALSE;
|
||||
}
|
||||
|
||||
static void
|
||||
play_on_demand_add_play_pointer (GstPlayOnDemand *filter, guint pos)
|
||||
{
|
||||
register guint i;
|
||||
|
||||
if (filter->rate && ((filter->buffer_time * filter->rate) > pos))
|
||||
for (i = 0; i < filter->max_plays; i++)
|
||||
if (filter->plays[i] == G_MAXUINT) {
|
||||
filter->plays[i] = pos;
|
||||
/* emit a signal to indicate a sample being played */
|
||||
g_signal_emit(filter, gst_pod_filter_signals[PLAYED_SIGNAL], 0);
|
||||
return;
|
||||
}
|
||||
for (i = 0; i <= filter->total_ticks / 32; i++) filter->ticks[i] = 0;
|
||||
}
|
||||
|
||||
static void
|
||||
play_on_demand_resize_buffer (GstPlayOnDemand *filter)
|
||||
{
|
||||
register guint i;
|
||||
guint new_size, min_size;
|
||||
gchar *new_buffer;
|
||||
register guint i;
|
||||
guint new_size, min_size;
|
||||
gchar *new_buffer;
|
||||
|
||||
/* use a default sample rate of 44100, 1 channel, 1 byte per sample if caps
|
||||
haven't been set yet */
|
||||
|
|
@ -557,7 +533,7 @@ play_on_demand_resize_buffer (GstPlayOnDemand *filter)
|
|||
|
||||
new_buffer = g_new(gchar, new_size);
|
||||
for (i = 0; i < min_size; i++) new_buffer[i] = filter->buffer[i];
|
||||
for (i = min_size; i < filter->buffer_bytes; i++) new_buffer[i] = 0;
|
||||
for (i = min_size; i < new_size; i++) new_buffer[i] = 0;
|
||||
|
||||
g_free(filter->buffer);
|
||||
filter->buffer = new_buffer;
|
||||
|
|
|
|||
|
|
@ -63,9 +63,9 @@ struct _GstPlayOnDemand {
|
|||
gboolean mute;
|
||||
gfloat buffer_time;
|
||||
guint max_plays;
|
||||
gfloat clock_speed;
|
||||
gfloat tick_rate;
|
||||
guint total_ticks;
|
||||
GSList *tick_list;
|
||||
guint32 *ticks;
|
||||
|
||||
/* internal buffer info */
|
||||
gchar *buffer;
|
||||
|
|
|
|||
Loading…
Reference in a new issue