+/*
+ 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);
+ }
+ }
+}