/* GStreamer unit tests for the audiointerleave element
 * Copyright (C) 2007 Tim-Philipp Müller <tim centricular net>
 * Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
 * with newer GLib versions (>= 2.31.0) */
#define GLIB_DISABLE_DEPRECATION_WARNINGS

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#ifdef HAVE_VALGRIND
# include <valgrind/valgrind.h>
#endif

#include <gst/check/gstcheck.h>
#include <gst/audio/audio.h>
#include <gst/audio/audio-enumtypes.h>

#include <gst/check/gstharness.h>

static void
gst_check_setup_events_audiointerleave (GstPad * srcpad, GstElement * element,
    GstCaps * caps, GstFormat format, const gchar * stream_id)
{
  GstSegment segment;

  gst_segment_init (&segment, format);

  fail_unless (gst_pad_push_event (srcpad,
          gst_event_new_stream_start (stream_id)));
  if (caps)
    fail_unless (gst_pad_push_event (srcpad, gst_event_new_caps (caps)));
  fail_unless (gst_pad_push_event (srcpad, gst_event_new_segment (&segment)));
}

GST_START_TEST (test_create_and_unref)
{
  GstElement *interleave;

  interleave = gst_element_factory_make ("audiointerleave", NULL);
  fail_unless (interleave != NULL);

  gst_element_set_state (interleave, GST_STATE_NULL);
  gst_object_unref (interleave);
}

GST_END_TEST;

GST_START_TEST (test_request_pads)
{
  GstElement *interleave;
  GstPad *pad1, *pad2;

  interleave = gst_element_factory_make ("audiointerleave", NULL);
  fail_unless (interleave != NULL);

  pad1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (pad1 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (pad1), "sink_0");

  pad2 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (pad2 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (pad2), "sink_1");

  gst_element_release_request_pad (interleave, pad2);
  gst_object_unref (pad2);
  gst_element_release_request_pad (interleave, pad1);
  gst_object_unref (pad1);

  gst_element_set_state (interleave, GST_STATE_NULL);
  gst_object_unref (interleave);
}

GST_END_TEST;

static GstPad **mysrcpads, *mysinkpad;
static GstBus *bus;
static GstElement *interleave;
static GMutex data_mutex;
static GCond data_cond;
static gint have_data;
static gfloat input[2];

static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("audio/x-raw, "
        "format = (string) " GST_AUDIO_NE (F32) ", "
        "channels = (int) 2, layout = (string) {interleaved, non-interleaved}, rate = (int) 48000"));

static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("audio/x-raw, "
        "format = (string) " GST_AUDIO_NE (F32) ", "
        "channels = (int) 1, layout = (string) interleaved, rate = (int) 48000"));

#define CAPS_48khz \
        "audio/x-raw, " \
        "format = (string) " GST_AUDIO_NE (F32) ", " \
        "channels = (int) 1, layout = (string) non-interleaved," \
        "rate = (int) 48000"

static GstFlowReturn
interleave_chain_func (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
  GstMapInfo map;
  gfloat *outdata;
  gint i;

  fail_unless (GST_IS_BUFFER (buffer));
  fail_unless (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_GAP));
  gst_buffer_map (buffer, &map, GST_MAP_READ);
  outdata = (gfloat *) map.data;
  fail_unless (outdata != NULL);

#ifdef HAVE_VALGRIND
  if (!(RUNNING_ON_VALGRIND))
#endif
    for (i = 0; i < map.size / sizeof (float); i += 2) {
      fail_unless_equals_float (outdata[i], input[0]);
      fail_unless_equals_float (outdata[i + 1], input[1]);
    }

  g_mutex_lock (&data_mutex);
  have_data += map.size;
  g_cond_signal (&data_cond);
  g_mutex_unlock (&data_mutex);

  gst_buffer_unmap (buffer, &map);
  gst_buffer_unref (buffer);


  return GST_FLOW_OK;
}

GST_START_TEST (test_audiointerleave_2ch)
{
  GstElement *queue;
  GstPad *sink0, *sink1, *src, *tmp;
  GstCaps *caps;
  gint i;
  GstBuffer *inbuf;
  gfloat *indata;
  GstMapInfo map;

  mysrcpads = g_new0 (GstPad *, 2);

  have_data = 0;

  interleave = gst_element_factory_make ("audiointerleave", NULL);
  fail_unless (interleave != NULL);

  g_object_set (interleave, "latency", GST_SECOND / 4, NULL);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);

  sink0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sink0 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (sink0), "sink_0");

  sink1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sink1 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (sink1), "sink_1");

  mysrcpads[0] = gst_pad_new_from_static_template (&srctemplate, "src0");
  fail_unless (mysrcpads[0] != NULL);

  caps = gst_caps_from_string (CAPS_48khz);
  gst_pad_set_active (mysrcpads[0], TRUE);
  gst_check_setup_events_audiointerleave (mysrcpads[0], interleave, caps,
      GST_FORMAT_TIME, "0");
  gst_pad_use_fixed_caps (mysrcpads[0]);

  mysrcpads[1] = gst_pad_new_from_static_template (&srctemplate, "src1");
  fail_unless (mysrcpads[1] != NULL);

  gst_pad_set_active (mysrcpads[1], TRUE);
  gst_check_setup_events_audiointerleave (mysrcpads[1], interleave, caps,
      GST_FORMAT_TIME, "1");
  gst_pad_use_fixed_caps (mysrcpads[1]);

  tmp = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (mysrcpads[0], tmp) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sink0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  fail_unless (gst_pad_link (mysrcpads[1], sink1) == GST_PAD_LINK_OK);

  mysinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
  fail_unless (mysinkpad != NULL);
  gst_pad_set_chain_function (mysinkpad, interleave_chain_func);
  gst_pad_set_active (mysinkpad, TRUE);

  src = gst_element_get_static_pad (interleave, "src");
  fail_unless (src != NULL);
  fail_unless (gst_pad_link (src, mysinkpad) == GST_PAD_LINK_OK);
  gst_object_unref (src);

  bus = gst_bus_new ();
  gst_element_set_bus (interleave, bus);

  fail_unless (gst_element_set_state (interleave,
          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);
  fail_unless (gst_element_set_state (queue,
          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);

  input[0] = -1.0;
  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  //GST_BUFFER_PTS (inbuf) = 0;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = -1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[0], inbuf) == GST_FLOW_OK);

  input[1] = 1.0;
  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  //GST_BUFFER_PTS (inbuf) = 0;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = 1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[1], inbuf) == GST_FLOW_OK);

  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  //GST_BUFFER_PTS (inbuf) = GST_SECOND;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = -1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[0], inbuf) == GST_FLOW_OK);

  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  //GST_BUFFER_PTS (inbuf) = GST_SECOND;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = 1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[1], inbuf) == GST_FLOW_OK);

  g_mutex_lock (&data_mutex);
  while (have_data < 48000 * 2 * 2 * sizeof (float))
    g_cond_wait (&data_cond, &data_mutex);
  g_mutex_unlock (&data_mutex);

  gst_bus_set_flushing (bus, TRUE);
  gst_element_set_state (interleave, GST_STATE_NULL);
  gst_element_set_state (queue, GST_STATE_NULL);

  gst_object_unref (mysrcpads[0]);
  gst_object_unref (mysrcpads[1]);
  gst_object_unref (mysinkpad);

  gst_element_release_request_pad (interleave, sink0);
  gst_object_unref (sink0);
  gst_element_release_request_pad (interleave, sink1);
  gst_object_unref (sink1);

  gst_object_unref (interleave);
  gst_object_unref (queue);
  gst_object_unref (bus);
  gst_caps_unref (caps);

  g_free (mysrcpads);
}

GST_END_TEST;

GST_START_TEST (test_audiointerleave_2ch_1eos)
{
  GstElement *queue;
  GstPad *sink0, *sink1, *src, *tmp;
  GstCaps *caps;
  gint i;
  GstBuffer *inbuf;
  gfloat *indata;
  GstMapInfo map;

  mysrcpads = g_new0 (GstPad *, 2);

  have_data = 0;

  interleave = gst_element_factory_make ("audiointerleave", NULL);
  fail_unless (interleave != NULL);

  g_object_set (interleave, "latency", GST_SECOND / 4, NULL);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);

  sink0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sink0 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (sink0), "sink_0");

  sink1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sink1 != NULL);
  fail_unless_equals_string (GST_OBJECT_NAME (sink1), "sink_1");

  mysrcpads[0] = gst_pad_new_from_static_template (&srctemplate, "src0");
  fail_unless (mysrcpads[0] != NULL);

  caps = gst_caps_from_string (CAPS_48khz);
  gst_pad_set_active (mysrcpads[0], TRUE);
  gst_check_setup_events_audiointerleave (mysrcpads[0], interleave, caps,
      GST_FORMAT_TIME, "0");
  gst_pad_use_fixed_caps (mysrcpads[0]);

  mysrcpads[1] = gst_pad_new_from_static_template (&srctemplate, "src1");
  fail_unless (mysrcpads[1] != NULL);

  gst_pad_set_active (mysrcpads[1], TRUE);
  gst_check_setup_events_audiointerleave (mysrcpads[1], interleave, caps,
      GST_FORMAT_TIME, "1");
  gst_pad_use_fixed_caps (mysrcpads[1]);

  tmp = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (mysrcpads[0], tmp) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sink0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  fail_unless (gst_pad_link (mysrcpads[1], sink1) == GST_PAD_LINK_OK);

  mysinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
  fail_unless (mysinkpad != NULL);
  gst_pad_set_chain_function (mysinkpad, interleave_chain_func);
  gst_pad_set_active (mysinkpad, TRUE);

  src = gst_element_get_static_pad (interleave, "src");
  fail_unless (src != NULL);
  fail_unless (gst_pad_link (src, mysinkpad) == GST_PAD_LINK_OK);
  gst_object_unref (src);

  bus = gst_bus_new ();
  gst_element_set_bus (interleave, bus);

  fail_unless (gst_element_set_state (interleave,
          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);
  fail_unless (gst_element_set_state (queue,
          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);

  input[0] = -1.0;
  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  GST_BUFFER_PTS (inbuf) = 0;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = -1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[0], inbuf) == GST_FLOW_OK);

  input[1] = 1.0;
  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  GST_BUFFER_PTS (inbuf) = 0;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = 1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[1], inbuf) == GST_FLOW_OK);

  g_mutex_lock (&data_mutex);
  /* 48000 samples per buffer * 2 sources * 2 buffers */
  while (have_data != 48000 * 2 * sizeof (float))
    g_cond_wait (&data_cond, &data_mutex);
  g_mutex_unlock (&data_mutex);

  input[0] = 0.0;
  gst_pad_push_event (mysrcpads[0], gst_event_new_eos ());

  input[1] = 1.0;
  inbuf = gst_buffer_new_and_alloc (48000 * sizeof (gfloat));
  GST_BUFFER_PTS (inbuf) = GST_SECOND;
  gst_buffer_map (inbuf, &map, GST_MAP_WRITE);
  indata = (gfloat *) map.data;
  for (i = 0; i < 48000; i++)
    indata[i] = 1.0;
  gst_buffer_unmap (inbuf, &map);
  fail_unless (gst_pad_push (mysrcpads[1], inbuf) == GST_FLOW_OK);

  g_mutex_lock (&data_mutex);
  /* 48000 samples per buffer * 2 sources * 2 buffers */
  while (have_data != 48000 * 2 * 2 * sizeof (float))
    g_cond_wait (&data_cond, &data_mutex);
  g_mutex_unlock (&data_mutex);

  gst_bus_set_flushing (bus, TRUE);
  gst_element_set_state (interleave, GST_STATE_NULL);
  gst_element_set_state (queue, GST_STATE_NULL);

  gst_object_unref (mysrcpads[0]);
  gst_object_unref (mysrcpads[1]);
  gst_object_unref (mysinkpad);

  gst_element_release_request_pad (interleave, sink0);
  gst_object_unref (sink0);
  gst_element_release_request_pad (interleave, sink1);
  gst_object_unref (sink1);

  gst_object_unref (interleave);
  gst_object_unref (queue);
  gst_object_unref (bus);
  gst_caps_unref (caps);

  g_free (mysrcpads);
}

GST_END_TEST;

static void
src_handoff_float32 (GstElement * element, GstBuffer * buffer, GstPad * pad,
    gboolean interleaved, gpointer user_data)
{
  gint n = GPOINTER_TO_INT (user_data);
  gfloat *data;
  gint i, num_samples;
  GstCaps *caps;
  guint64 mask;
  GstAudioChannelPosition pos;
  GstMapInfo map;

  fail_unless (gst_buffer_is_writable (buffer));

  switch (n) {
    case 0:
    case 1:
    case 2:
      pos = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
      break;
    case 3:
      pos = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
      break;
    default:
      pos = GST_AUDIO_CHANNEL_POSITION_INVALID;
      break;
  }

  mask = G_GUINT64_CONSTANT (1) << pos;

  caps = gst_caps_new_simple ("audio/x-raw",
      "format", G_TYPE_STRING, GST_AUDIO_NE (F32),
      "channels", G_TYPE_INT, 1,
      "layout", G_TYPE_STRING, interleaved ? "interleaved" : "non-interleaved",
      "channel-mask", GST_TYPE_BITMASK, mask, "rate", G_TYPE_INT, 48000, NULL);

  gst_pad_set_caps (pad, caps);
  gst_caps_unref (caps);

  fail_unless (gst_buffer_map (buffer, &map, GST_MAP_WRITE));
  fail_unless (map.size % sizeof (gfloat) == 0);

  fail_unless (map.size > 480);

  num_samples = map.size / sizeof (gfloat);
  data = (gfloat *) map.data;

  for (i = 0; i < num_samples; i++)
    data[i] = (n % 2 == 0) ? -1.0 : 1.0;

  gst_buffer_unmap (buffer, &map);
}

static void
src_handoff_float32_audiointerleaved (GstElement * element, GstBuffer * buffer,
    GstPad * pad, gpointer user_data)
{
  src_handoff_float32 (element, buffer, pad, TRUE, user_data);
}

static void
src_handoff_float32_non_audiointerleaved (GstElement * element,
    GstBuffer * buffer, GstPad * pad, gpointer user_data)
{
  src_handoff_float32 (element, buffer, pad, FALSE, user_data);
}

static void
sink_handoff_float32 (GstElement * element, GstBuffer * buffer, GstPad * pad,
    gpointer user_data)
{
  gint i;
  GstMapInfo map;
  gfloat *data;
  GstCaps *caps, *ccaps;
  gint n = GPOINTER_TO_INT (user_data);
  guint64 mask;

  fail_unless (GST_IS_BUFFER (buffer));
  gst_buffer_map (buffer, &map, GST_MAP_READ);
  data = (gfloat *) map.data;

  /* Give a little leeway for rounding errors */
  fail_unless (gst_util_uint64_scale (map.size, GST_SECOND,
          48000 * 2 * sizeof (gfloat)) <= GST_BUFFER_DURATION (buffer) + 1 ||
      gst_util_uint64_scale (map.size, GST_SECOND,
          48000 * 2 * sizeof (gfloat)) >= GST_BUFFER_DURATION (buffer) - 1);

  if (n == 0 || n == 3) {
    GstAudioChannelPosition pos[2] =
        { GST_AUDIO_CHANNEL_POSITION_NONE, GST_AUDIO_CHANNEL_POSITION_NONE };
    gst_audio_channel_positions_to_mask (pos, 2, FALSE, &mask);
  } else if (n == 1) {
    GstAudioChannelPosition pos[2] = { GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
      GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT
    };
    gst_audio_channel_positions_to_mask (pos, 2, FALSE, &mask);
  } else if (n == 2) {
    GstAudioChannelPosition pos[2] = { GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
      GST_AUDIO_CHANNEL_POSITION_REAR_CENTER
    };
    gst_audio_channel_positions_to_mask (pos, 2, FALSE, &mask);
  } else {
    g_assert_not_reached ();
  }

  if (pad) {
    caps = gst_caps_new_simple ("audio/x-raw",
        "format", G_TYPE_STRING, GST_AUDIO_NE (F32),
        "channels", G_TYPE_INT, 2, "rate", G_TYPE_INT, 48000,
        "layout", G_TYPE_STRING, "interleaved",
        "channel-mask", GST_TYPE_BITMASK, mask, NULL);

    ccaps = gst_pad_get_current_caps (pad);
    fail_unless (gst_caps_is_equal (caps, ccaps));
    gst_caps_unref (ccaps);
    gst_caps_unref (caps);
  }
#ifdef HAVE_VALGRIND
  if (!(RUNNING_ON_VALGRIND))
#endif
    for (i = 0; i < map.size / sizeof (float); i += 2) {
      fail_unless_equals_float (data[i], -1.0);
      if (n != 3)
        fail_unless_equals_float (data[i + 1], 1.0);
    }
  have_data += map.size;

  gst_buffer_unmap (buffer, &map);

}

static void
test_audiointerleave_2ch_pipeline (gboolean interleaved)
{
  GstElement *pipeline, *queue, *src1, *src2, *interleave, *sink;
  GstPad *sinkpad0, *sinkpad1, *tmp, *tmp2;
  GstMessage *msg;
  void *src_handoff_float32 =
      interleaved ? &src_handoff_float32_audiointerleaved :
      &src_handoff_float32_non_audiointerleaved;

  have_data = 0;

  pipeline = (GstElement *) gst_pipeline_new ("pipeline");
  fail_unless (pipeline != NULL);

  src1 = gst_element_factory_make ("fakesrc", "src1");
  fail_unless (src1 != NULL);
  g_object_set (src1, "num-buffers", 4, NULL);
  g_object_set (src1, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src1, "signal-handoffs", TRUE, NULL);
  g_object_set (src1, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src1, "handoff", G_CALLBACK (src_handoff_float32),
      GINT_TO_POINTER (0));
  gst_bin_add (GST_BIN (pipeline), src1);

  src2 = gst_element_factory_make ("fakesrc", "src2");
  fail_unless (src2 != NULL);
  g_object_set (src2, "num-buffers", 4, NULL);
  g_object_set (src2, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src2, "signal-handoffs", TRUE, NULL);
  g_object_set (src2, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src2, "handoff", G_CALLBACK (src_handoff_float32),
      GINT_TO_POINTER (1));
  gst_bin_add (GST_BIN (pipeline), src2);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);
  gst_bin_add (GST_BIN (pipeline), queue);

  interleave = gst_element_factory_make ("audiointerleave", "audiointerleave");
  fail_unless (interleave != NULL);
  gst_bin_add (GST_BIN (pipeline), gst_object_ref (interleave));

  sinkpad0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad0 != NULL);
  tmp = gst_element_get_static_pad (src1, "src");
  fail_unless (gst_pad_link (tmp, sinkpad0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sinkpad1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad1 != NULL);
  tmp = gst_element_get_static_pad (src2, "src");
  tmp2 = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sinkpad1) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sink = gst_element_factory_make ("fakesink", "sink");
  fail_unless (sink != NULL);
  g_object_set (sink, "signal-handoffs", TRUE, NULL);
  g_signal_connect (sink, "handoff", G_CALLBACK (sink_handoff_float32),
      GINT_TO_POINTER (0));
  gst_bin_add (GST_BIN (pipeline), sink);
  tmp = gst_element_get_static_pad (interleave, "src");
  tmp2 = gst_element_get_static_pad (sink, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  msg = gst_bus_poll (GST_ELEMENT_BUS (pipeline), GST_MESSAGE_EOS, -1);
  gst_message_unref (msg);

  /* 48000 samples per buffer * 2 sources * 4 buffers */
  fail_unless (have_data == 48000 * 2 * 4 * sizeof (gfloat));

  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_element_release_request_pad (interleave, sinkpad0);
  gst_object_unref (sinkpad0);
  gst_element_release_request_pad (interleave, sinkpad1);
  gst_object_unref (sinkpad1);
  gst_object_unref (interleave);
  gst_object_unref (pipeline);
}

GST_START_TEST (test_audiointerleave_2ch_pipeline_audiointerleaved)
{
  test_audiointerleave_2ch_pipeline (TRUE);
}

GST_END_TEST;

GST_START_TEST (test_audiointerleave_2ch_pipeline_non_audiointerleaved)
{
  test_audiointerleave_2ch_pipeline (FALSE);
}

GST_END_TEST;

GST_START_TEST (test_audiointerleave_2ch_pipeline_input_chanpos)
{
  GstElement *pipeline, *queue, *src1, *src2, *interleave, *sink;
  GstPad *sinkpad0, *sinkpad1, *tmp, *tmp2;
  GstMessage *msg;

  have_data = 0;

  pipeline = (GstElement *) gst_pipeline_new ("pipeline");
  fail_unless (pipeline != NULL);

  src1 = gst_element_factory_make ("fakesrc", "src1");
  fail_unless (src1 != NULL);
  g_object_set (src1, "num-buffers", 4, NULL);
  g_object_set (src1, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src1, "signal-handoffs", TRUE, NULL);
  g_object_set (src1, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src1, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (2));
  gst_bin_add (GST_BIN (pipeline), src1);

  src2 = gst_element_factory_make ("fakesrc", "src2");
  fail_unless (src2 != NULL);
  g_object_set (src2, "num-buffers", 4, NULL);
  g_object_set (src2, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src2, "signal-handoffs", TRUE, NULL);
  g_object_set (src2, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src2, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (3));
  gst_bin_add (GST_BIN (pipeline), src2);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);
  gst_bin_add (GST_BIN (pipeline), queue);

  interleave = gst_element_factory_make ("audiointerleave", "audiointerleave");
  fail_unless (interleave != NULL);
  g_object_set (interleave, "channel-positions-from-input", TRUE, NULL);
  gst_bin_add (GST_BIN (pipeline), gst_object_ref (interleave));

  sinkpad0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad0 != NULL);
  tmp = gst_element_get_static_pad (src1, "src");
  fail_unless (gst_pad_link (tmp, sinkpad0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sinkpad1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad1 != NULL);
  tmp = gst_element_get_static_pad (src2, "src");
  tmp2 = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sinkpad1) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sink = gst_element_factory_make ("fakesink", "sink");
  fail_unless (sink != NULL);
  g_object_set (sink, "signal-handoffs", TRUE, NULL);
  g_signal_connect (sink, "handoff", G_CALLBACK (sink_handoff_float32),
      GINT_TO_POINTER (1));
  gst_bin_add (GST_BIN (pipeline), sink);
  tmp = gst_element_get_static_pad (interleave, "src");
  tmp2 = gst_element_get_static_pad (sink, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  msg = gst_bus_poll (GST_ELEMENT_BUS (pipeline), GST_MESSAGE_EOS, -1);
  gst_message_unref (msg);

  /* 48000 samples per buffer * 2 sources * 4 buffers */
  fail_unless (have_data == 48000 * 2 * 4 * sizeof (gfloat));

  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_element_release_request_pad (interleave, sinkpad0);
  gst_object_unref (sinkpad0);
  gst_element_release_request_pad (interleave, sinkpad1);
  gst_object_unref (sinkpad1);
  gst_object_unref (interleave);
  gst_object_unref (pipeline);
}

GST_END_TEST;

GST_START_TEST (test_audiointerleave_2ch_pipeline_custom_chanpos)
{
  GstElement *pipeline, *queue, *src1, *src2, *interleave, *sink;
  GstPad *sinkpad0, *sinkpad1, *tmp, *tmp2;
  GstMessage *msg;
  GValueArray *arr;
  GValue val = { 0, };

  have_data = 0;

  pipeline = (GstElement *) gst_pipeline_new ("pipeline");
  fail_unless (pipeline != NULL);

  src1 = gst_element_factory_make ("fakesrc", "src1");
  fail_unless (src1 != NULL);
  g_object_set (src1, "num-buffers", 4, NULL);
  g_object_set (src1, "signal-handoffs", TRUE, NULL);
  g_object_set (src1, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src1, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src1, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (0));
  gst_bin_add (GST_BIN (pipeline), src1);

  src2 = gst_element_factory_make ("fakesrc", "src2");
  fail_unless (src2 != NULL);
  g_object_set (src2, "num-buffers", 4, NULL);
  g_object_set (src2, "signal-handoffs", TRUE, NULL);
  g_object_set (src2, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src2, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src2, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (1));
  gst_bin_add (GST_BIN (pipeline), src2);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);
  gst_bin_add (GST_BIN (pipeline), queue);

  interleave = gst_element_factory_make ("audiointerleave", "audiointerleave");
  fail_unless (interleave != NULL);
  g_object_set (interleave, "channel-positions-from-input", FALSE, NULL);
  arr = g_value_array_new (2);

  g_value_init (&val, GST_TYPE_AUDIO_CHANNEL_POSITION);
  g_value_set_enum (&val, GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER);
  g_value_array_append (arr, &val);
  g_value_reset (&val);
  g_value_set_enum (&val, GST_AUDIO_CHANNEL_POSITION_REAR_CENTER);
  g_value_array_append (arr, &val);
  g_value_unset (&val);

  g_object_set (interleave, "channel-positions", arr, NULL);
  g_value_array_free (arr);
  gst_bin_add (GST_BIN (pipeline), gst_object_ref (interleave));

  sinkpad0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad0 != NULL);
  tmp = gst_element_get_static_pad (src1, "src");
  fail_unless (gst_pad_link (tmp, sinkpad0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sinkpad1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad1 != NULL);
  tmp = gst_element_get_static_pad (src2, "src");
  tmp2 = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sinkpad1) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sink = gst_element_factory_make ("fakesink", "sink");
  fail_unless (sink != NULL);
  g_object_set (sink, "signal-handoffs", TRUE, NULL);
  g_signal_connect (sink, "handoff", G_CALLBACK (sink_handoff_float32),
      GINT_TO_POINTER (2));
  gst_bin_add (GST_BIN (pipeline), sink);
  tmp = gst_element_get_static_pad (interleave, "src");
  tmp2 = gst_element_get_static_pad (sink, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  msg = gst_bus_poll (GST_ELEMENT_BUS (pipeline), GST_MESSAGE_EOS, -1);
  gst_message_unref (msg);

  /* 48000 samples per buffer * 2 sources * 4 buffers */
  fail_unless (have_data == 48000 * 2 * 4 * sizeof (gfloat));

  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_element_release_request_pad (interleave, sinkpad0);
  gst_object_unref (sinkpad0);
  gst_element_release_request_pad (interleave, sinkpad1);
  gst_object_unref (sinkpad1);
  gst_object_unref (interleave);
  gst_object_unref (pipeline);
}

GST_END_TEST;

GST_START_TEST (test_audiointerleave_2ch_pipeline_no_chanpos)
{
  GstElement *pipeline, *queue, *src1, *src2, *interleave, *sink;
  GstPad *sinkpad0, *sinkpad1, *tmp, *tmp2;
  GstMessage *msg;

  have_data = 0;

  pipeline = (GstElement *) gst_pipeline_new ("pipeline");
  fail_unless (pipeline != NULL);

  src1 = gst_element_factory_make ("fakesrc", "src1");
  fail_unless (src1 != NULL);
  g_object_set (src1, "num-buffers", 4, NULL);
  g_object_set (src1, "signal-handoffs", TRUE, NULL);
  g_object_set (src1, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src1, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src1, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (0));
  gst_bin_add (GST_BIN (pipeline), src1);

  src2 = gst_element_factory_make ("fakesrc", "src2");
  fail_unless (src2 != NULL);
  g_object_set (src2, "num-buffers", 4, NULL);
  g_object_set (src2, "signal-handoffs", TRUE, NULL);
  g_object_set (src2, "sizetype", 2,
      "sizemax", (int) 48000 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_object_set (src2, "format", GST_FORMAT_TIME, NULL);
  g_signal_connect (src2, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (1));
  gst_bin_add (GST_BIN (pipeline), src2);

  queue = gst_element_factory_make ("queue", "queue");
  fail_unless (queue != NULL);
  gst_bin_add (GST_BIN (pipeline), queue);

  interleave = gst_element_factory_make ("audiointerleave", "audiointerleave");
  fail_unless (interleave != NULL);
  g_object_set (interleave, "channel-positions-from-input", FALSE, NULL);
  gst_bin_add (GST_BIN (pipeline), gst_object_ref (interleave));

  sinkpad0 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad0 != NULL);
  tmp = gst_element_get_static_pad (src1, "src");
  fail_unless (gst_pad_link (tmp, sinkpad0) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sinkpad1 = gst_element_request_pad_simple (interleave, "sink_%u");
  fail_unless (sinkpad1 != NULL);
  tmp = gst_element_get_static_pad (src2, "src");
  tmp2 = gst_element_get_static_pad (queue, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);
  tmp = gst_element_get_static_pad (queue, "src");
  fail_unless (gst_pad_link (tmp, sinkpad1) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);

  sink = gst_element_factory_make ("fakesink", "sink");
  fail_unless (sink != NULL);
  g_object_set (sink, "signal-handoffs", TRUE, NULL);
  g_signal_connect (sink, "handoff", G_CALLBACK (sink_handoff_float32),
      GINT_TO_POINTER (0));
  gst_bin_add (GST_BIN (pipeline), sink);
  tmp = gst_element_get_static_pad (interleave, "src");
  tmp2 = gst_element_get_static_pad (sink, "sink");
  fail_unless (gst_pad_link (tmp, tmp2) == GST_PAD_LINK_OK);
  gst_object_unref (tmp);
  gst_object_unref (tmp2);

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  msg = gst_bus_poll (GST_ELEMENT_BUS (pipeline), GST_MESSAGE_EOS, -1);
  gst_message_unref (msg);

  /* 48000 samples per buffer * 2 sources * 4 buffers */
  fail_unless (have_data == 48000 * 2 * 4 * sizeof (gfloat));

  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_element_release_request_pad (interleave, sinkpad0);
  gst_object_unref (sinkpad0);
  gst_element_release_request_pad (interleave, sinkpad1);
  gst_object_unref (sinkpad1);
  gst_object_unref (interleave);
  gst_object_unref (pipeline);
}

GST_END_TEST;

static void
forward_check_event (GstHarness * h, GstHarness * hsrc, GstEventType type)
{
  GstEvent *e;

  e = gst_harness_pull_event (hsrc);
  fail_unless (GST_EVENT_TYPE (e) == type);
  gst_harness_push_event (h, e);
}

GST_START_TEST (test_audiointerleave_2ch_smallbuf)
{
  GstElement *audiointerleave;
  GstHarness *hsrc;
  GstHarness *h;
  GstHarness *h2;
  GstBuffer *buffer;
  gint i;
  GstEvent *ev;
  GstCaps *ecaps, *caps;

  audiointerleave = gst_element_factory_make ("audiointerleave", NULL);

  g_object_set (audiointerleave, "latency", GST_SECOND / 2,
      "output-buffer-duration", GST_SECOND / 4, NULL);

  h = gst_harness_new_with_element (audiointerleave, "sink_0", "src");
  gst_harness_use_testclock (h);

  h2 = gst_harness_new_with_element (audiointerleave, "sink_1", NULL);
  gst_harness_set_src_caps_str (h2, "audio/x-raw, "
      "format=" GST_AUDIO_NE (F32) ", channels=(int)1,"
      " layout=interleaved, rate=48000, channel-mask=(bitmask)8");

  hsrc = gst_harness_new ("fakesrc");
  gst_harness_use_testclock (hsrc);
  g_object_set (hsrc->element,
      "is-live", TRUE,
      "sync", TRUE,
      "signal-handoffs", TRUE,
      "format", GST_FORMAT_TIME,
      "sizetype", 2,
      "sizemax", (int) 480 * sizeof (gfloat),
      "datarate", (int) 48000 * sizeof (gfloat), NULL);
  g_signal_connect (hsrc->element, "handoff",
      G_CALLBACK (src_handoff_float32_audiointerleaved), GINT_TO_POINTER (2));
  gst_harness_play (hsrc);

  gst_harness_crank_single_clock_wait (hsrc);
  forward_check_event (h, hsrc, GST_EVENT_STREAM_START);
  forward_check_event (h, hsrc, GST_EVENT_CAPS);
  forward_check_event (h, hsrc, GST_EVENT_SEGMENT);
  gst_harness_push (h, gst_harness_pull (hsrc));        /* buffer */

  for (i = 0; i < 24; i++) {
    gst_harness_crank_single_clock_wait (hsrc);
    forward_check_event (h, hsrc, GST_EVENT_CAPS);
    gst_harness_push (h, gst_harness_pull (hsrc));      /* buffer */
  }

  gst_harness_crank_single_clock_wait (h);


  gst_event_unref (gst_harness_pull_event (h)); /* stream-start */
  ev = gst_harness_pull_event (h);      /* caps */
  fail_unless_equals_int (GST_EVENT_CAPS, GST_EVENT_TYPE (ev));

  caps = gst_caps_new_simple ("audio/x-raw",
      "format", G_TYPE_STRING, GST_AUDIO_NE (F32),
      "channels", G_TYPE_INT, 2,
      "layout", G_TYPE_STRING, "interleaved",
      "rate", G_TYPE_INT, 48000, "channel-mask", GST_TYPE_BITMASK,
      (guint64) 0x9, NULL);

  gst_event_parse_caps (ev, &ecaps);
  gst_check_caps_equal (ecaps, caps);
  gst_caps_unref (caps);
  gst_event_unref (ev);

  /* eat the caps processing */
  gst_harness_crank_single_clock_wait (h);
  for (i = 0; i < 23; i++)
    gst_harness_crank_single_clock_wait (h);
  fail_unless_equals_uint64 (gst_clock_get_time (GST_ELEMENT_CLOCK
          (h->element)), 750 * GST_MSECOND);

  buffer = gst_harness_pull (h);
  sink_handoff_float32 (NULL, buffer, NULL, GUINT_TO_POINTER (3));
  gst_buffer_unref (buffer);
  fail_unless_equals_int (gst_harness_buffers_received (h), 1);

  for (i = 0; i < 50; i++) {
    gst_harness_crank_single_clock_wait (hsrc);
    forward_check_event (h, hsrc, GST_EVENT_CAPS);
    gst_harness_push (h, gst_harness_pull (hsrc));      /* buffer */
  }
  for (i = 0; i < 25; i++)
    gst_harness_crank_single_clock_wait (h);
  fail_unless_equals_uint64 (gst_clock_get_time (GST_ELEMENT_CLOCK
          (h->element)), 1000 * GST_MSECOND);
  buffer = gst_harness_pull (h);
  sink_handoff_float32 (NULL, buffer, NULL, GUINT_TO_POINTER (3));
  gst_buffer_unref (buffer);
  fail_unless_equals_int (gst_harness_buffers_received (h), 2);

  for (i = 0; i < 25; i++) {
    gst_harness_crank_single_clock_wait (hsrc);
    forward_check_event (h, hsrc, GST_EVENT_CAPS);
    gst_harness_push (h, gst_harness_pull (hsrc));      /* buffer */
  }
  for (i = 0; i < 25; i++)
    gst_harness_crank_single_clock_wait (h);
  fail_unless_equals_uint64 (gst_clock_get_time (GST_ELEMENT_CLOCK
          (h->element)), 1250 * GST_MSECOND);
  buffer = gst_harness_pull (h);
  sink_handoff_float32 (NULL, buffer, NULL, GUINT_TO_POINTER (3));
  gst_buffer_unref (buffer);
  fail_unless_equals_int (gst_harness_buffers_received (h), 3);

  gst_harness_push_event (h, gst_event_new_eos ());

  for (i = 0; i < 25; i++)
    gst_harness_crank_single_clock_wait (h);
  fail_unless_equals_uint64 (gst_clock_get_time (GST_ELEMENT_CLOCK
          (h->element)), 1500 * GST_MSECOND);
  buffer = gst_harness_pull (h);
  sink_handoff_float32 (NULL, buffer, NULL, GUINT_TO_POINTER (3));
  gst_buffer_unref (buffer);

  fail_unless_equals_int (gst_harness_buffers_received (h), 4);

  gst_harness_teardown (h2);
  gst_harness_teardown (h);
  gst_harness_teardown (hsrc);
  gst_object_unref (audiointerleave);
}

GST_END_TEST;

static Suite *
audiointerleave_suite (void)
{
  Suite *s = suite_create ("audiointerleave");
  TCase *tc_chain = tcase_create ("general");

  suite_add_tcase (s, tc_chain);
  tcase_set_timeout (tc_chain, 180);
  tcase_add_test (tc_chain, test_create_and_unref);
  tcase_add_test (tc_chain, test_request_pads);
  tcase_add_test (tc_chain, test_audiointerleave_2ch);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_1eos);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_pipeline_audiointerleaved);
  tcase_add_test (tc_chain,
      test_audiointerleave_2ch_pipeline_non_audiointerleaved);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_pipeline_input_chanpos);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_pipeline_custom_chanpos);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_pipeline_no_chanpos);
  tcase_add_test (tc_chain, test_audiointerleave_2ch_smallbuf);

  return s;
}

GST_CHECK_MAIN (audiointerleave);