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/* GStreamer ReplayGain limiter
*
* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
*
* rglimiter.c: Unit test for the rglimiter element
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <gst/check/gstcheck.h>
#include <gst/audio/audio.h>
#include <math.h>
/* For ease of programming we use globals to keep refs for our floating
* src and sink pads we create; otherwise we always have to do get_pad,
* get_peer, and then remove references in every test function */
static GstPad *mysrcpad, *mysinkpad;
#define RG_LIMITER_CAPS_TEMPLATE_STRING \
"audio/x-raw, " \
"format = (string) "GST_AUDIO_NE (F32) ", " \
"layout = (string) interleaved, " \
"channels = (int) [ 1, MAX ], " \
"rate = (int) [ 1, MAX ]"
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (RG_LIMITER_CAPS_TEMPLATE_STRING)
);
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (RG_LIMITER_CAPS_TEMPLATE_STRING)
);
static GstElement *
setup_rglimiter (void)
{
GstElement *element;
GST_DEBUG ("setup_rglimiter");
element = gst_check_setup_element ("rglimiter");
mysrcpad = gst_check_setup_src_pad (element, &srctemplate);
mysinkpad = gst_check_setup_sink_pad (element, &sinktemplate);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
return element;
}
static void
cleanup_rglimiter (GstElement * element)
{
GST_DEBUG ("cleanup_rglimiter");
g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
g_list_free (buffers);
buffers = NULL;
gst_check_teardown_src_pad (element);
gst_check_teardown_sink_pad (element);
gst_check_teardown_element (element);
}
static void
set_playing_state (GstElement * element)
{
fail_unless (gst_element_set_state (element,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
"Could not set state to PLAYING");
}
static const gfloat test_input[] = {
-2.0, -1.0, -0.75, -0.5, -0.25, 0.0, 0.25, 0.5, 0.75, 1.0, 2.0
};
static const gfloat test_output[] = {
-0.99752737684336523, /* -2.0 */
-0.88079707797788243, /* -1.0 */
-0.7310585786300049, /* -0.75 */
-0.5, -0.25, 0.0, 0.25, 0.5,
0.7310585786300049, /* 0.75 */
0.88079707797788243, /* 1.0 */
0.99752737684336523, /* 2.0 */
};
static void
setup_events (GstElement * element)
{
GstCaps *caps;
caps = gst_caps_new_simple ("audio/x-raw",
"rate", G_TYPE_INT, 44100, "channels", G_TYPE_INT, 1,
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"layout", G_TYPE_STRING, "interleaved", NULL);
gst_check_setup_events (mysrcpad, element, caps, GST_FORMAT_TIME);
gst_caps_unref (caps);
}
static GstBuffer *
create_test_buffer (void)
{
GstBuffer *buf = gst_buffer_new_and_alloc (sizeof (test_input));
gst_buffer_fill (buf, 0, test_input, sizeof (test_input));
ASSERT_BUFFER_REFCOUNT (buf, "buf", 1);
return buf;
}
static void
verify_test_buffer (GstBuffer * buf)
{
GstMapInfo map;
gfloat *output;
gint i;
gst_buffer_map (buf, &map, GST_MAP_READ);
output = (gfloat *) map.data;
fail_unless (map.size == sizeof (test_output));
for (i = 0; i < G_N_ELEMENTS (test_input); i++)
fail_unless (ABS (output[i] - test_output[i]) < 1.e-6,
"Incorrect output value %.6f for input %.2f, expected %.6f",
output[i], test_input[i], test_output[i]);
gst_buffer_unmap (buf, &map);
}
/* Start of tests. */
GST_START_TEST (test_no_buffer)
{
GstElement *element = setup_rglimiter ();
set_playing_state (element);
cleanup_rglimiter (element);
}
GST_END_TEST;
GST_START_TEST (test_disabled)
{
GstElement *element = setup_rglimiter ();
GstBuffer *buf, *out_buf;
g_object_set (element, "enabled", FALSE, NULL);
set_playing_state (element);
setup_events (element);
buf = create_test_buffer ();
fail_unless (gst_pad_push (mysrcpad, buf) == GST_FLOW_OK);
fail_unless (g_list_length (buffers) == 1);
out_buf = buffers->data;
fail_if (out_buf == NULL);
buffers = g_list_remove (buffers, out_buf);
ASSERT_BUFFER_REFCOUNT (out_buf, "out_buf", 1);
fail_unless (buf == out_buf);
gst_buffer_unref (out_buf);
cleanup_rglimiter (element);
}
GST_END_TEST;
GST_START_TEST (test_limiting)
{
GstElement *element = setup_rglimiter ();
GstBuffer *buf, *out_buf;
set_playing_state (element);
setup_events (element);
/* Mutable variant. */
buf = create_test_buffer ();
GST_DEBUG ("push mutable buffer");
fail_unless (gst_pad_push (mysrcpad, buf) == GST_FLOW_OK);
fail_unless (g_list_length (buffers) == 1);
out_buf = buffers->data;
fail_if (out_buf == NULL);
ASSERT_BUFFER_REFCOUNT (out_buf, "out_buf", 1);
verify_test_buffer (out_buf);
/* Immutable variant. */
buf = create_test_buffer ();
/* Extra ref: */
gst_buffer_ref (buf);
ASSERT_BUFFER_REFCOUNT (buf, "buf", 2);
GST_DEBUG ("push immutable buffer");
fail_unless (gst_pad_push (mysrcpad, buf) == GST_FLOW_OK);
ASSERT_BUFFER_REFCOUNT (buf, "buf", 1);
fail_unless (g_list_length (buffers) == 2);
out_buf = g_list_last (buffers)->data;
fail_if (out_buf == NULL);
ASSERT_BUFFER_REFCOUNT (out_buf, "out_buf", 1);
fail_unless (buf != out_buf);
/* Drop our extra ref: */
gst_buffer_unref (buf);
verify_test_buffer (out_buf);
cleanup_rglimiter (element);
}
GST_END_TEST;
GST_START_TEST (test_gap)
{
GstElement *element = setup_rglimiter ();
GstBuffer *buf, *out_buf;
GstMapInfo m1, m2;
set_playing_state (element);
setup_events (element);
buf = create_test_buffer ();
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_GAP);
fail_unless (gst_pad_push (mysrcpad, buf) == GST_FLOW_OK);
fail_unless (g_list_length (buffers) == 1);
out_buf = buffers->data;
fail_if (out_buf == NULL);
ASSERT_BUFFER_REFCOUNT (out_buf, "out_buf", 1);
/* Verify that the baseclass does not lift the GAP flag: */
fail_unless (GST_BUFFER_FLAG_IS_SET (out_buf, GST_BUFFER_FLAG_GAP));
gst_buffer_map (out_buf, &m1, GST_MAP_READ);
gst_buffer_map (buf, &m2, GST_MAP_READ);
g_assert (m1.size == m2.size);
/* We cheated by passing an input buffer with non-silence that has the GAP
* flag set. The element cannot know that however and must have skipped
* adjusting the buffer because of the flag, which we can easily verify: */
fail_if (memcmp (m1.data, m2.data, m1.size) != 0);
gst_buffer_unmap (out_buf, &m1);
gst_buffer_unmap (buf, &m2);
cleanup_rglimiter (element);
}
GST_END_TEST;
static Suite *
rglimiter_suite (void)
{
Suite *s = suite_create ("rglimiter");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_no_buffer);
tcase_add_test (tc_chain, test_disabled);
tcase_add_test (tc_chain, test_limiting);
tcase_add_test (tc_chain, test_gap);
return s;
}
GST_CHECK_MAIN (rglimiter);