ardour/livetrax
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Add test for a transparent region on top of (and enclosing) another.

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git-svn-id: svn://localhost/ardour2/branches/3.0@12409 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Carl Hetherington 2012-05-24 00:53:23 +00:00
parent 6b3b3dcced
commit ba56c4bd03
2 changed files with 73 additions and 0 deletions
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71
libs/ardour/test/playlist_read_test.cc
View File

@ -208,3 +208,74 @@ PlaylistReadTest::check_staircase (Sample* b, int offset, int N)
CPPUNIT_ASSERT_EQUAL (j, int (b[i]));
}
}
/* Check the case where we have
* |----------- Region A (transparent) ------------------|
* |---- Region B (opaque) --|
*
* The result should be a mix of the two during region B's time.
*/
void
PlaylistReadTest::enclosedTransparentReadTest ()
{
boost::shared_ptr<AudioRegion> ar0 = boost::dynamic_pointer_cast<AudioRegion> (_region[0]);
ar0->set_name ("ar0");
_apl->add_region (ar0, 256);
/* These calls will result in a 64-sample fade */
ar0->set_fade_in_length (0);
ar0->set_fade_out_length (0);
ar0->set_length (256);
boost::shared_ptr<AudioRegion> ar1 = boost::dynamic_pointer_cast<AudioRegion> (_region[1]);
ar1->set_name ("ar1");
_apl->add_region (ar1, 0);
/* These calls will result in a 64-sample fade */
ar1->set_fade_in_length (0);
ar1->set_fade_out_length (0);
ar1->set_length (1024);
ar1->set_opaque (false);
_apl->read (_buf, _mbuf, _gbuf, 0, 1024, 0);
/* First 64 samples should just be ar1, faded in */
for (int i = 0; i < 64; ++i) {
CPPUNIT_ASSERT_DOUBLES_EQUAL (float (i * float (i / 63.0)), _buf[i], 1e-16);
}
/* Then some of ar1 with no fade */
for (int i = 64; i < 256; ++i) {
CPPUNIT_ASSERT_DOUBLES_EQUAL (i, _buf[i], 1e-16);
}
/* Then ar1 + ar0 (faded in) for 64 samples */
for (int i = 256; i < (256 + 64); ++i) {
CPPUNIT_ASSERT_DOUBLES_EQUAL (i + float ((i - 256) * float ((i - 256) / 63.0)), _buf[i], 1e-16);
}
/* Then ar1 + ar0 for 128 samples */
for (int i = (256 + 64); i < (256 + 64 + 128); ++i) {
CPPUNIT_ASSERT_DOUBLES_EQUAL (i + i - (256 + 64) + 64, _buf[i], 1e-16);
}
/* Then ar1 + ar0 (faded out) for 64 samples */
for (int i = (256 + 64 + 128); i < 512; ++i) {
float const ar0_without_fade = i - 256;
/* See above regarding VERY_SMALL_SIGNAL SNAFU */
float const fade = (((double) 1 - 0.0000001) / 63) * (511 - i) + 0.0000001;
CPPUNIT_ASSERT_DOUBLES_EQUAL (i + float (ar0_without_fade * fade), _buf[i], 1e-16);
}
/* Then just ar1 for a while */
for (int i = 512; i < (1024 - 64); ++i) {
CPPUNIT_ASSERT_DOUBLES_EQUAL (i, _buf[i], 1e-16);
}
/* And finally ar1's fade out */
for (int i = (1024 - 64); i < 1024; ++i) {
/* See above regarding VERY_SMALL_SIGNAL SNAFU */
float const fade = (((double) 1 - 0.0000001) / 63) * (1023 - i) + 0.0000001;
CPPUNIT_ASSERT_DOUBLES_EQUAL (i * fade, _buf[i], 1e-16);
}
}

2
libs/ardour/test/playlist_read_test.h
View File

@ -7,6 +7,7 @@ class PlaylistReadTest : public TestNeedingPlaylistAndRegions
CPPUNIT_TEST (singleReadTest);
CPPUNIT_TEST (overlappingReadTest);
CPPUNIT_TEST (transparentReadTest);
CPPUNIT_TEST (enclosedTransparentReadTest);
CPPUNIT_TEST (miscReadTest);
CPPUNIT_TEST_SUITE_END ();
@ -17,6 +18,7 @@ public:
void singleReadTest ();
void overlappingReadTest ();
void transparentReadTest ();
void enclosedTransparentReadTest ();
void miscReadTest ();
private: