Test signal / silence is in the right place.

diff --git a/test/silence_padding_test.cc b/test/silence_padding_test.cc
index e3b0243e0bbe99b004a54c8a325ec4174ec0e0bd..e121065367585665653371e249d3f54b6aa8ac3c 100644 (file)
--- a/test/silence_padding_test.cc
+++ b/test/silence_padding_test.cc
@@ -20,6 +20,7 @@
 #include <libdcp/cpl.h>
 #include <libdcp/dcp.h>
 #include <libdcp/sound_asset.h>
+#include <libdcp/sound_frame.h>
 #include <libdcp/reel.h>
 #include "sndfile_content.h"
 
@@ -50,6 +51,59 @@ static void test_silence_padding (int channels)
        shared_ptr<const libdcp::SoundAsset> sound_asset = check.cpls().front()->reels().front()->main_sound ();
        BOOST_CHECK (sound_asset);
        BOOST_CHECK (sound_asset->channels () == channels);
+
+       /* Sample index in the DCP */
+       int n = 0;
+       /* DCP sound asset frame */
+       int frame = 0;
+
+       while (n < sound_asset->intrinsic_duration()) {
+               shared_ptr<const libdcp::SoundFrame> sound_frame = sound_asset->get_frame (frame++);
+               uint8_t const * d = sound_frame->data ();
+               
+               for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->channels())) {
+
+                       if (sound_asset->channels() > 0) {
+                               /* L should be silent */
+                               int const sample = d[i + 0] | (d[i + 1] << 8);
+                               BOOST_CHECK_EQUAL (sample, 0);
+                       }
+
+                       if (sound_asset->channels() > 1) {
+                               /* R should be silent */
+                               int const sample = d[i + 2] | (d[i + 3] << 8);
+                               BOOST_CHECK_EQUAL (sample, 0);
+                       }
+                       
+                       if (sound_asset->channels() > 2) {
+                               /* Mono input so it will appear on centre */
+                               int const sample = d[i + 7] | (d[i + 8] << 8);
+                               BOOST_CHECK_EQUAL (sample, n);
+                       }
+
+                       if (sound_asset->channels() > 3) {
+                               /* Lfe should be silent */
+                               int const sample = d[i + 9] | (d[i + 10] << 8);
+                               BOOST_CHECK_EQUAL (sample, 0);
+                       }
+
+                       if (sound_asset->channels() > 4) {
+                               /* Ls should be silent */
+                               int const sample = d[i + 11] | (d[i + 12] << 8);
+                               BOOST_CHECK_EQUAL (sample, 0);
+                       }
+
+
+                       if (sound_asset->channels() > 5) {
+                               /* Rs should be silent */
+                               int const sample = d[i + 13] | (d[i + 14] << 8);
+                               BOOST_CHECK_EQUAL (sample, 0);
+                       }
+
+                       ++n;
+               }
+       }
+       
 }
 
 BOOST_AUTO_TEST_CASE (silence_padding_test)