gstreamer/subprojects/gst-plugins-good/tests/interactive/equalizer-test.c

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/* GStreamer test for the equalizer element
* Copyright (C) 2007 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* Will tests the equalizer by fading all bands in and out one by one and
* finaly all together.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/gst.h>
#include <stdlib.h>
#include <math.h>
GST_DEBUG_CATEGORY_STATIC (equalizer_test_debug);
#define GST_CAT_DEFAULT equalizer_test_debug
static GstBus *pipeline_bus;
static gboolean
check_bus (GstClockTime max_wait_time)
{
GstMessage *msg;
msg = gst_bus_poll (pipeline_bus, GST_MESSAGE_ERROR | GST_MESSAGE_EOS,
max_wait_time);
if (msg == NULL)
return FALSE;
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR) {
GError *err = NULL;
gchar *debug = NULL;
g_assert (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR);
gst_message_parse_error (msg, &err, &debug);
GST_ERROR ("ERROR: %s [%s]", err->message, debug);
g_print ("\n===========> ERROR: %s\n%s\n\n", err->message, debug);
g_clear_error (&err);
g_free (debug);
}
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_EOS) {
g_print ("\n === EOS ===\n\n");
}
gst_message_unref (msg);
return TRUE;
}
// fix below
static void
equalizer_set_band_value (GstElement * eq, guint band, gdouble val)
{
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GObject *child;
child = gst_child_proxy_get_child_by_index (GST_CHILD_PROXY (eq), band);
g_object_set (child, "gain", val, NULL);
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g_object_unref (child);
g_print ("Band %2d: %.2f\n", band, val);
}
static void
equalizer_set_all_band_values (GstElement * eq, guint num, gdouble val)
{
gint i;
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GObject *child;
for (i = 0; i < num; i++) {
child = gst_child_proxy_get_child_by_index (GST_CHILD_PROXY (eq), i);
g_object_set (child, "gain", val, NULL);
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g_object_unref (child);
}
g_print ("All bands: %.2f\n", val);
}
// fix above
static gboolean
equalizer_set_band_value_and_wait (GstElement * eq, guint band, gdouble val)
{
equalizer_set_band_value (eq, band, val);
return check_bus (100 * GST_MSECOND);
}
static gboolean
equalizer_set_all_band_values_and_wait (GstElement * eq, guint num, gdouble val)
{
equalizer_set_all_band_values (eq, num, val);
return check_bus (100 * GST_MSECOND);
}
static void
do_slider_fiddling (GstElement * playbin, GstElement * eq)
{
gboolean stop;
guint num_bands, i;
gdouble d, step = 0.5;
stop = FALSE;
g_object_get (eq, "num-bands", &num_bands, NULL);
g_print ("%u bands.\n", num_bands);
while (!stop) {
for (i = 0; !stop && i < num_bands; ++i) {
d = -24.0;
while (!stop && d <= 12.0) {
stop = equalizer_set_band_value_and_wait (eq, i, d);
d += step;
}
d = 12.0;
while (!stop && d >= -24.0) {
stop = equalizer_set_band_value_and_wait (eq, i, d);
d -= step;
}
d = -24.0;
while (!stop && d <= 12.0) {
stop = equalizer_set_band_value_and_wait (eq, i, d);
d += step;
}
}
d = 0.0;
while (!stop && d <= 12.0) {
stop = equalizer_set_all_band_values_and_wait (eq, num_bands, d);
d += step;
}
d = 12.0;
while (!stop && d >= -24.0) {
stop = equalizer_set_all_band_values_and_wait (eq, num_bands, d);
d -= step;
}
d = -24.0;
while (!stop && d <= 0.0) {
stop = equalizer_set_all_band_values_and_wait (eq, num_bands, d);
d += step;
}
}
}
int
main (int argc, char **argv)
{
gchar *opt_audiosink_str = NULL;
gchar **filenames = NULL;
const GOptionEntry test_goptions[] = {
{"audiosink", '\0', 0, G_OPTION_ARG_STRING, &opt_audiosink_str,
"audiosink to use (default: autoaudiosink)", NULL},
{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL},
{NULL, '\0', 0, 0, NULL, NULL, NULL}
};
GOptionContext *ctx;
GError *opt_err = NULL;
GstStateChangeReturn ret;
GstElement *playbin, *sink, *bin, *eq, *auconv;
GstPad *eq_sinkpad;
gchar *uri;
/* command line option parsing */
ctx = g_option_context_new ("FILENAME");
g_option_context_add_group (ctx, gst_init_get_option_group ());
g_option_context_add_main_entries (ctx, test_goptions, NULL);
if (!g_option_context_parse (ctx, &argc, &argv, &opt_err)) {
g_error ("Error parsing command line options: %s", opt_err->message);
g_option_context_free (ctx);
g_clear_error (&opt_err);
return -1;
}
g_option_context_free (ctx);
GST_DEBUG_CATEGORY_INIT (equalizer_test_debug, "equalizertest", 0, "eqtest");
if (filenames == NULL || *filenames == NULL) {
g_printerr ("Please specify a file to play back\n");
return -1;
}
playbin = gst_element_factory_make ("playbin", "playbin");
if (playbin == NULL) {
g_error ("Couldn't create 'playbin' element");
return -1;
}
if (opt_audiosink_str) {
g_print ("Trying audiosink '%s' ...", opt_audiosink_str);
sink = gst_element_factory_make (opt_audiosink_str, "sink");
g_print ("%s\n", (sink) ? "ok" : "element couldn't be created");
} else {
sink = NULL;
}
if (sink == NULL) {
g_print ("Trying audiosink '%s' ...", "autoaudiosink");
sink = gst_element_factory_make ("autoaudiosink", "sink");
g_print ("%s\n", (sink) ? "ok" : "element couldn't be created");
}
if (sink == NULL) {
g_print ("Trying audiosink '%s' ...", "alsasink");
sink = gst_element_factory_make ("alsasink", "sink");
g_print ("%s\n", (sink) ? "ok" : "element couldn't be created");
}
if (sink == NULL) {
g_print ("Trying audiosink '%s' ...", "osssink");
sink = gst_element_factory_make ("osssink", "sink");
g_print ("%s\n", (sink) ? "ok" : "element couldn't be created");
}
g_assert (sink != NULL);
bin = gst_bin_new ("ausinkbin");
g_assert (bin != NULL);
eq = gst_element_factory_make ("equalizer-nbands", "equalizer");
g_assert (eq != NULL);
auconv = gst_element_factory_make ("audioconvert", "eqauconv");
g_assert (auconv != NULL);
gst_bin_add_many (GST_BIN (bin), eq, auconv, sink, NULL);
if (!gst_element_link (eq, auconv))
g_error ("Failed to link equalizer to audioconvert");
if (!gst_element_link (auconv, sink))
g_error ("Failed to link audioconvert to audio sink");
eq_sinkpad = gst_element_get_static_pad (eq, "sink");
g_assert (eq_sinkpad != NULL);
gst_element_add_pad (bin, gst_ghost_pad_new (NULL, eq_sinkpad));
gst_object_unref (eq_sinkpad);
g_object_set (playbin, "audio-sink", bin, NULL);
/* won't work: uri = gst_uri_construct ("file", filenames[0]); */
uri = g_strdup_printf ("file://%s", filenames[0]);
g_object_set (playbin, "uri", uri, NULL);
g_free (uri);
pipeline_bus = GST_ELEMENT_BUS (playbin);
ret = gst_element_set_state (playbin, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
g_printerr ("Failed to set playbin to PLAYING\n");
check_bus (1 * GST_SECOND);
return -1;
}
ret = gst_element_get_state (playbin, NULL, NULL, 5 * GST_SECOND);
if (ret == GST_STATE_CHANGE_ASYNC) {
g_printerr ("Failed to go to PLAYING in 5 seconds, bailing out\n");
return -1;
} else if (ret != GST_STATE_CHANGE_SUCCESS) {
g_printerr ("State change to PLAYING failed\n");
check_bus (1 * GST_SECOND);
return -1;
}
g_print ("Playing ...\n");
do_slider_fiddling (playbin, eq);
gst_element_set_state (playbin, GST_STATE_NULL);
gst_object_unref (playbin);
return 0;
}