Various fixes so that audio_delay_test works again.

1 files changed, 165 insertions, 0 deletions

diff --git a/test/audio_decoder_test.cc b/test/audio_decoder_test.cc
new file mode 100644
index 000000000..46f9d5ac6
--- /dev/null
+++ b/test/audio_decoder_test.cc
@@ -0,0 +1,165 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file  test/audio_decoder_test.cc
+ *  @brief Tests of the AudioDecoder class.
+ */
+
+#include <cassert>
+#include <boost/test/unit_test.hpp>
+#include "test.h"
+#include "lib/audio_decoder.h"
+#include "lib/audio_content.h"
+
+using std::string;
+using std::cout;
+using std::min;
+using boost::shared_ptr;
+
+class TestAudioDecoder : public AudioDecoder
+{
+public:
+	TestAudioDecoder (shared_ptr<AudioContent> content)
+		: AudioDecoder (content)
+		, _position (0)
+	{}
+
+	bool pass ()
+	{
+		AudioFrame const N = min (
+			AudioFrame (2000),
+			_audio_content->audio_length().frames (_audio_content->output_audio_frame_rate ()) - _position
+			);
+
+		shared_ptr<AudioBuffers> buffers (new AudioBuffers (_audio_content->audio_channels(), N));
+		for (int i = 0; i < _audio_content->audio_channels(); ++i) {
+			for (int j = 0; j < N; ++j) {
+				buffers->data(i)[j] = j + _position;
+			}
+		}
+
+		audio (buffers, ContentTime::from_frames (_position, _audio_content->output_audio_frame_rate ()));
+		_position += N;
+
+		return N < 2000;
+	}
+
+	void seek (ContentTime t, bool accurate)
+	{
+		AudioDecoder::seek (t, accurate);
+		_position = t.frames (_audio_content->output_audio_frame_rate ());
+	}
+
+private:
+	AudioFrame _position;
+};
+
+class TestAudioContent : public AudioContent
+{
+public:
+	TestAudioContent (shared_ptr<Film> film)
+		: Content (film)
+		, AudioContent (film, DCPTime ())
+	{}
+
+	string summary () const {
+		return "";
+	}
+
+	string information () const {
+		return "";
+	}
+
+	DCPTime full_length () const {
+		return DCPTime (audio_length().get ());
+	}
+
+	int audio_channels () const {
+		return 2;
+	}
+
+	ContentTime audio_length () const {
+		return ContentTime::from_seconds (61.2942);
+	}
+
+	int content_audio_frame_rate () const {
+		return 48000;
+	}
+
+	int output_audio_frame_rate () const {
+		return 48000;
+	}
+
+	AudioMapping audio_mapping () const {
+		return AudioMapping (audio_channels ());
+	}
+
+	void set_audio_mapping (AudioMapping) {}
+};
+
+shared_ptr<TestAudioContent> content;
+shared_ptr<TestAudioDecoder> decoder;
+
+static shared_ptr<ContentAudio>
+get (AudioFrame from, AudioFrame length)
+{
+	decoder->seek (ContentTime::from_frames (from, content->output_audio_frame_rate ()), true);
+	shared_ptr<ContentAudio> ca = decoder->get_audio (from, length, true);
+	BOOST_CHECK_EQUAL (ca->frame, from);
+	return ca;
+}
+
+static void
+check (AudioFrame from, AudioFrame length)
+{
+	shared_ptr<ContentAudio> ca = get (from, length);
+	for (int i = 0; i < content->audio_channels(); ++i) {
+		for (int j = 0; j < length; ++j) {
+			BOOST_CHECK_EQUAL (ca->audio->data(i)[j], j + from);
+			assert (ca->audio->data(i)[j] == j + from);
+		}
+	}
+}
+
+/** Check the logic in AudioDecoder::get_audio */
+BOOST_AUTO_TEST_CASE (audio_decoder_get_audio_test)
+{
+	shared_ptr<Film> film = new_test_film ("audio_decoder_test");
+
+	content.reset (new TestAudioContent (film));
+	decoder.reset (new TestAudioDecoder (content));
+	
+	/* Simple reads */
+	check (0, 48000);
+	check (44, 9123);
+	check (9991, 22);
+
+	/* Read off the end */
+
+	AudioFrame const from = content->output_audio_frame_rate() * 61;
+	AudioFrame const length = content->output_audio_frame_rate() * 4;
+	shared_ptr<ContentAudio> ca = get (from, length);
+	
+	for (int i = 0; i < content->audio_channels(); ++i) {
+		for (int j = 0; j < ca->audio->frames(); ++j) {
+			BOOST_CHECK_EQUAL (ca->audio->data(i)[j], j + from);
+			assert (ca->audio->data(i)[j] == j + from);
+		}
+	}
+}