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-rw-r--r--gst/playondemand/demo-mp3.c36
-rw-r--r--gst/playondemand/filter.func52
-rw-r--r--gst/playondemand/gstplayondemand.c16
-rw-r--r--gst/playondemand/gstplayondemand.h17
4 files changed, 57 insertions, 64 deletions
diff --git a/gst/playondemand/demo-mp3.c b/gst/playondemand/demo-mp3.c
index 7161aae4..6e404a15 100644
--- a/gst/playondemand/demo-mp3.c
+++ b/gst/playondemand/demo-mp3.c
@@ -4,13 +4,14 @@
#include <gst/gst.h>
#define NUM_BEATS 12
+#define TICK_RATE(x) (x * 1e-6)
GtkWidget *window, *vbox, *beat_box, *button_box;
GtkWidget *play_button, *clear_button, *reset_button, *quit_button;
GtkWidget **beat_button;
GtkWidget *speed_scale;
GtkObject *speed_adj;
-GstElement *src, *mad, *conv, *pod, *sink, *pipeline;
+GstElement *src, *dec, *pod, *sink, *pipeline;
GstClock *element_clock;
guint32 *beats;
@@ -63,36 +64,33 @@ beat (GtkToggleButton *button, gpointer data)
void
speed (GtkAdjustment *adjustment, gpointer data)
{
- g_signal_stop_emission_by_name(G_OBJECT(pod), "deep-notify");
- g_object_set(G_OBJECT(pod), "tick-rate", adjustment->value, NULL);
+ /*g_signal_stop_emission_by_name(G_OBJECT(pod), "deep-notify");*/
+ g_object_set(G_OBJECT(pod), "tick-rate", TICK_RATE(adjustment->value), NULL);
/*gst_clock_set_speed(element_clock, adjustment->value);*/
}
void
setup_pipeline (gchar *filename)
{
- src = gst_element_factory_make("filesrc", "filesrc");
- mad = gst_element_factory_make("mad", "mad");
- conv = gst_element_factory_make("audioconvert", "audioconvert");
- pod = gst_element_factory_make("playondemand", "playondemand");
- sink = gst_element_factory_make("alsasink", "alsasink");
+ src = gst_element_factory_make("filesrc", "source");
+ dec = gst_element_factory_make("vorbisfile", "decoder");
+ pod = gst_element_factory_make("playondemand", "sequencer");
+ sink = gst_element_factory_make("alsasink", "sink");
- g_object_set(G_OBJECT(src), "location", filename, NULL);
- g_object_set(G_OBJECT(sink), "period-count", 64,
- "period-size", 512, NULL);
- g_object_set(G_OBJECT(pod), "total-ticks", NUM_BEATS,
- "tick-rate", 1.0,
- "max-plays", NUM_BEATS * 2, NULL);
+ g_object_set(G_OBJECT (src), "location", filename, NULL);
+ g_object_set(G_OBJECT (sink), "period-count", 64, "period-size", 512, NULL);
+ g_object_set(G_OBJECT (pod), "total-ticks", NUM_BEATS,
+ "tick-rate", 1.0e-6, "max-plays", NUM_BEATS * 2, NULL);
- g_object_get(G_OBJECT(pod), "ticks", &beats, NULL);
+ g_object_get(G_OBJECT (pod), "ticks", &beats, NULL);
pipeline = gst_pipeline_new("app");
- gst_bin_add_many(GST_BIN(pipeline), src, mad, conv, pod, sink, NULL);
- gst_element_link_many(src, mad, conv, pod, sink, NULL);
+ gst_bin_add_many(GST_BIN (pipeline), src, dec, pod, sink, NULL);
+ gst_element_link_many(src, dec, pod, sink, NULL);
- element_clock = gst_bin_get_clock(GST_BIN(pipeline));
- gst_element_set_clock(GST_ELEMENT(pod), element_clock);
+ element_clock = gst_element_get_clock(GST_ELEMENT (sink));
+ gst_element_set_clock(GST_ELEMENT (pod), element_clock);
}
void
diff --git a/gst/playondemand/filter.func b/gst/playondemand/filter.func
index a07edf4e..3f2755a0 100644
--- a/gst/playondemand/filter.func
+++ b/gst/playondemand/filter.func
@@ -6,37 +6,36 @@ filter_data = (_TYPE_ *) filter->buffer;
num_filter = filter->buffer_bytes / sizeof(_TYPE_);
do {
- if (in == NULL && ! filter->eos) in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
-
- /****************************************************************************/
/* see if we've got any events coming through ... */
- while (! filter->eos && GST_IS_EVENT(in)) {
- if (GST_EVENT_TYPE(in) == GST_EVENT_EOS) {
- gst_event_unref(in);
- gst_buffer_free(in);
+ while (! filter->eos && in != NULL && GST_IS_EVENT (in)) {
+ GstEvent *event = GST_EVENT (in);
+ if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+ gst_event_unref (event);
+ gst_data_free (in);
+ in = NULL;
filter->eos = TRUE;
- } else if ((GST_EVENT_TYPE(in) == GST_EVENT_SEEK) ||
- (GST_EVENT_TYPE(in) == GST_EVENT_FLUSH)) {
- gst_event_unref(in);
- gst_buffer_free(in);
+ } else if ((GST_EVENT_TYPE (event) == GST_EVENT_DISCONTINUOUS) ||
+ (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH)) {
+ gst_event_unref (event);
+ gst_data_free (in);
+ in = NULL;
filter->eos = FALSE;
filter->write = 0;
} else {
- gst_pad_push(filter->srcpad, GST_DATA (in));
+ gst_pad_push(filter->srcpad, in);
}
- in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
+ in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
}
- /****************************************************************************/
/* handle data from the input buffer. */
if (! filter->eos) {
register guint j, w = filter->write;
- data_in = (_TYPE_ *) GST_BUFFER_DATA(in);
- num_in = GST_BUFFER_SIZE(in) / sizeof(_TYPE_);
+ data_in = (_TYPE_ *) GST_BUFFER_DATA (GST_BUFFER (in));
+ num_in = GST_BUFFER_SIZE (in) / sizeof(_TYPE_);
for (j = 0; (j < num_in) && (w+j < num_filter); j++)
filter_data[w+j] = data_in[j];
@@ -45,14 +44,13 @@ do {
if (filter->write >= num_filter) filter->eos = TRUE;
- out = in;
+ out = GST_BUFFER (in);
} else {
out = gst_buffer_new_from_pool(filter->bufpool, 0, 0);
}
in = NULL;
- /****************************************************************************/
/* check to see if we have to add new play pointers. */
if (filter->clock) {
@@ -60,12 +58,8 @@ do {
guint total_ticks = filter->total_ticks;
guint current_tick = \
- ((guint) (gst_clock_get_time(filter->clock) * filter->tick_rate /
- GST_SECOND)) % total_ticks;
-
- /* for some reason modulo arithmetic isn't working for me here, i suspect
- some unsigned/signed voodoo. but it's probably safe to do this with an if
- statement since it doesn't happen all that often ... */
+ ((guint) (gst_clock_get_time(filter->clock) * \
+ filter->tick_rate / GST_SECOND)) % total_ticks;
tick_offset = current_tick - last_tick;
if (tick_offset < 0) tick_offset += total_ticks;
@@ -84,14 +78,13 @@ do {
last_tick = current_tick;
}
- /****************************************************************************/
/* handle output data. */
{
register guint k, p;
- data_out = (_TYPE_ *) GST_BUFFER_DATA(out);
- num_out = GST_BUFFER_SIZE(out) / sizeof(_TYPE_);
+ data_out = (_TYPE_ *) GST_BUFFER_DATA (out);
+ num_out = GST_BUFFER_SIZE (out) / sizeof(_TYPE_);
for (k = 0; k < num_out; k++) data_out[k] = zero;
@@ -111,11 +104,12 @@ do {
}
}
- /****************************************************************************/
- /* push out the buffer. */
+ /* push out the buffer and get a new buffer if we're allowed to loop. */
gst_pad_push(filter->srcpad, GST_DATA (out));
if (gst_element_interrupt (GST_ELEMENT (filter))) break;
+ in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
+
} while (TRUE);
diff --git a/gst/playondemand/gstplayondemand.c b/gst/playondemand/gstplayondemand.c
index afac7bdd..0c06bbd2 100644
--- a/gst/playondemand/gstplayondemand.c
+++ b/gst/playondemand/gstplayondemand.c
@@ -44,9 +44,9 @@
/* element factory information */
static GstElementDetails play_on_demand_details = {
"Play On Demand",
- "Filter/Audio/Effect",
- "Plays a stream at specific times, or when it receives a signal",
- "Leif Morgan Johnson <leif@ambient.2y.net>"
+ "Filter/Editor/Audio",
+ "Schedule a stream to play at specific times, or when a signal is received",
+ "Leif Morgan Johnson <leif@ambient.2y.net>",
};
@@ -218,18 +218,23 @@ play_on_demand_class_init (GstPlayOnDemandClass *klass)
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_MUTE,
g_param_spec_boolean("mute", "Silence output", "Do not output any sound",
FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_BUFFER_TIME,
g_param_spec_float("buffer-time", "Buffer length in seconds", "Number of seconds of audio the buffer holds",
0.0, G_MAXFLOAT, 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("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 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));
@@ -430,7 +435,8 @@ play_on_demand_loop (GstElement *elem)
{
GstPlayOnDemand *filter = GST_PLAYONDEMAND(elem);
guint num_in, num_out, num_filter;
- GstBuffer *in, *out;
+ GstData *in = NULL;
+ GstBuffer *out = NULL;
static guint last_tick = 0;
g_return_if_fail(filter != NULL);
@@ -442,7 +448,7 @@ play_on_demand_loop (GstElement *elem)
filter->bufpool = gst_buffer_pool_get_default(GST_POD_BUFPOOL_SIZE,
GST_POD_BUFPOOL_NUM);
- in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
+ in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
if (filter->format == GST_PLAYONDEMAND_FORMAT_INT) {
if (filter->width == 16) {
diff --git a/gst/playondemand/gstplayondemand.h b/gst/playondemand/gstplayondemand.h
index b73b5c2a..8c7fa212 100644
--- a/gst/playondemand/gstplayondemand.h
+++ b/gst/playondemand/gstplayondemand.h
@@ -22,21 +22,20 @@
#ifndef __GST_PLAYONDEMAND_H__
#define __GST_PLAYONDEMAND_H__
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include <gst/gst.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
+G_BEGIN_DECLS
#define GST_TYPE_PLAYONDEMAND \
(gst_play_on_demand_get_type())
#define GST_PLAYONDEMAND(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAYONDEMAND,GstPlayOnDemand))
#define GST_PLAYONDEMAND_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstPlayOnDemand))
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAYONDEMAND,GstPlayOnDemand))
#define GST_IS_PLAYONDEMAND(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAYONDEMAND))
#define GST_IS_PLAYONDEMAND_CLASS(obj) \
@@ -94,10 +93,6 @@ struct _GstPlayOnDemandClass {
GType gst_play_on_demand_get_type(void);
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
+G_END_DECLS
#endif /* __GST_PLAYONDEMAND_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-07 04:23:45 +0000