/* GStreamer

 *

 * unit test for videorate

 *

 * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot 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.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <gst/check/gstcheck.h>

/* For ease of programming we use globals to keep refs for our floating

 * src and sink pads we create; otherwise we always have to do get_pad,

 * get_peer, and then remove references in every test function */

static GstPad *mysrcpad, *mysinkpad;

#define VIDEO_CAPS_TEMPLATE_STRING     \

    "video/x-raw"

#define VIDEO_CAPS_STRING               \

    "video/x-raw, "                 \

    "width = (int) 320, "               \

    "height = (int) 240, "              \

    "framerate = (fraction) 25/1 , "    \

    "format = (string) I420"

#define VIDEO_CAPS_FORCE_VARIABLE_FRAMERATE_STRING \

    "video/x-raw, "                 \

    "framerate = (fraction) 0/1"

#define VIDEO_CAPS_NO_FRAMERATE_STRING  \

    "video/x-raw, "                 \

    "width = (int) 320, "               \

    "height = (int) 240, "              \

    "format = (string) I420"

#define VIDEO_CAPS_NEWSIZE_STRING       \

    "video/x-raw, "                 \

    "width = (int) 240, "               \

    "height = (int) 120, "              \

    "framerate = (fraction) 25/1 , "	\

    "format = (string) I420"

#define VIDEO_CAPS_UNUSUAL_FRAMERATE    \

    "video/x-raw, "                 \

    "width = (int) 240, "               \

    "height = (int) 120, "              \

    "framerate = (fraction) 999/7 , "	\

    "format = (string) I420"

static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",

    GST_PAD_SINK,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS (VIDEO_CAPS_TEMPLATE_STRING)

    );

static GstStaticPadTemplate downstreamsinktemplate =

GST_STATIC_PAD_TEMPLATE ("sink",

    GST_PAD_SINK,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS (VIDEO_CAPS_STRING)

    );

static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",

    GST_PAD_SRC,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS (VIDEO_CAPS_TEMPLATE_STRING)

    );

static GstStaticPadTemplate force_variable_rate_template =

GST_STATIC_PAD_TEMPLATE ("sink",

    GST_PAD_SINK,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS (VIDEO_CAPS_FORCE_VARIABLE_FRAMERATE_STRING)

    );

static void

assert_videorate_stats (GstElement * videorate, const gchar * reason,

    guint64 xin, guint64 xout, guint64 xdropped, guint64 xduplicated)

{

  guint64 in, out, dropped, duplicated;

  g_object_get (videorate, "in", &in, "out", &out, "drop", &dropped,

      "duplicate", &duplicated, NULL);

#define _assert_equals_uint64(a, b)                                     \

G_STMT_START {                                                          \

  guint64 first = a;                                                    \

  guint64 second = b;                                                   \

  fail_unless(first == second,                                          \

    "%s: '" #a "' (%" G_GUINT64_FORMAT ") is not equal to "		\

    "expected '" #a"' (%" G_GUINT64_FORMAT ")", reason, first, second); \

} G_STMT_END;

  _assert_equals_uint64 (in, xin);

  _assert_equals_uint64 (out, xout);

  _assert_equals_uint64 (dropped, xdropped);

  _assert_equals_uint64 (duplicated, xduplicated);

}

static GstElement *

setup_videorate_full (GstStaticPadTemplate * srctemplate,

    GstStaticPadTemplate * sinktemplate)

{

  GstElement *videorate;

  GST_DEBUG ("setup_videorate");

  videorate = gst_check_setup_element ("videorate");

  mysrcpad = gst_check_setup_src_pad (videorate, srctemplate);

  mysinkpad = gst_check_setup_sink_pad (videorate, sinktemplate);

  gst_pad_set_active (mysrcpad, TRUE);

  gst_pad_set_active (mysinkpad, TRUE);

  return videorate;

}

static GstElement *

setup_videorate (void)

{

  return setup_videorate_full (&srctemplate, &sinktemplate);

}

static void

cleanup_videorate (GstElement * videorate)

{

  GST_DEBUG ("cleanup_videorate");

  g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);

  g_list_free (buffers);

  buffers = NULL;

  gst_element_set_state (videorate, GST_STATE_NULL);

  gst_element_get_state (videorate, NULL, NULL, GST_CLOCK_TIME_NONE);

  gst_pad_set_active (mysrcpad, FALSE);

  gst_pad_set_active (mysinkpad, FALSE);

  gst_check_teardown_src_pad (videorate);

  gst_check_teardown_sink_pad (videorate);

  gst_check_teardown_element (videorate);

}

static guint8

buffer_get_byte (GstBuffer * buffer, gint offset)

{

  guint8 res;

  gst_buffer_extract (buffer, offset, &res, 1);

  return res;

}

GST_START_TEST (test_one)

{

  GstElement *videorate;

  GstBuffer *inbuffer;

  GstCaps *caps;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  inbuffer = gst_buffer_new_and_alloc (4);

  gst_buffer_memset (inbuffer, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  GST_BUFFER_TIMESTAMP (inbuffer) = 0;

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

  /* ... and it is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

  fail_unless_equals_int (g_list_length (buffers), 0);

  /* cleanup */

  cleanup_videorate (videorate);

}

GST_END_TEST;

GST_START_TEST (test_more)

{

  GstElement *videorate;

  GstBuffer *first, *second, *third, *outbuffer;

  GList *l;

  GstCaps *caps;

  GRand *rand;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  assert_videorate_stats (videorate, "creation", 0, 0, 0, 0);

  rand = g_rand_new ();

  /* first buffer */

  first = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (first) = 0;

  /* it shouldn't matter what the offsets are, videorate produces perfect

     streams */

  GST_BUFFER_OFFSET (first) = g_rand_int (rand);

  GST_BUFFER_OFFSET_END (first) = g_rand_int (rand);

  gst_buffer_memset (first, 0, 1, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  gst_buffer_ref (first);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, first) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  fail_unless_equals_int (g_list_length (buffers), 0);

  assert_videorate_stats (videorate, "first buffer", 1, 0, 0, 0);

  /* second buffer; inbetween second and third output frame's timestamp */

  second = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (second) = GST_SECOND * 3 / 50;

  GST_BUFFER_OFFSET (second) = g_rand_int (rand);

  GST_BUFFER_OFFSET_END (second) = g_rand_int (rand);

  gst_buffer_memset (second, 0, 2, 4);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  gst_buffer_ref (second);

  /* pushing gives away one of my references ... */

  fail_unless (gst_pad_push (mysrcpad, second) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  /* ... and the first one is pushed out, with timestamp 0 */

  fail_unless_equals_int (g_list_length (buffers), 1);

  assert_videorate_stats (videorate, "second buffer", 2, 1, 0, 0);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  outbuffer = buffers->data;

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (outbuffer), 0);

  /* third buffer */

  third = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (third) = GST_SECOND * 12 / 50;

  GST_BUFFER_OFFSET (third) = g_rand_int (rand);

  GST_BUFFER_OFFSET_END (third) = g_rand_int (rand);

  gst_buffer_memset (third, 0, 3, 4);

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  gst_buffer_ref (third);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, third) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  /* submitting the third buffer has triggered flushing of three more frames */

  assert_videorate_stats (videorate, "third buffer", 3, 4, 0, 2);

  /* check timestamp and source correctness */

  l = buffers;

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (l->data), 0);

  fail_unless_equals_int (buffer_get_byte (l->data, 0), 1);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET (l->data), 0);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET_END (l->data), 1);

  l = g_list_next (l);

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (l->data), GST_SECOND / 25);

  fail_unless_equals_int (buffer_get_byte (l->data, 0), 2);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET (l->data), 1);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET_END (l->data), 2);

  l = g_list_next (l);

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (l->data),

      GST_SECOND * 2 / 25);

  fail_unless_equals_int (buffer_get_byte (l->data, 0), 2);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET (l->data), 2);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET_END (l->data), 3);

  l = g_list_next (l);

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (l->data),

      GST_SECOND * 3 / 25);

  fail_unless_equals_int (buffer_get_byte (l->data, 0), 2);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET (l->data), 3);

  fail_unless_equals_uint64 (GST_BUFFER_OFFSET_END (l->data), 4);

  fail_unless_equals_int (g_list_length (buffers), 4);

  /* one held by us, three held by each output frame taken from the second */

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  /* now send EOS */

  fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_eos ()));

  /* submitting eos should flush out two more frames for tick 8 and 10 */

  /* FIXME: right now it only flushes out one, so out is 5 instead of 6 ! */

  assert_videorate_stats (videorate, "eos", 3, 5, 0, 2);

  fail_unless_equals_int (g_list_length (buffers), 5);

  /* cleanup */

  g_rand_free (rand);

  gst_buffer_unref (first);

  gst_buffer_unref (second);

  gst_buffer_unref (third);

  cleanup_videorate (videorate);

}

GST_END_TEST;

/* frames at 1, 0, 2 -> second one should be ignored */

GST_START_TEST (test_wrong_order_from_zero)

{

  GstElement *videorate;

  GstBuffer *first, *second, *third, *outbuffer;

  GstCaps *caps;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  assert_videorate_stats (videorate, "start", 0, 0, 0, 0);

  /* first buffer */

  first = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (first) = GST_SECOND;

  gst_buffer_memset (first, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  gst_buffer_ref (first);

  GST_DEBUG ("pushing first buffer");

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, first) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  fail_unless_equals_int (g_list_length (buffers), 0);

  assert_videorate_stats (videorate, "first", 1, 0, 0, 0);

  /* second buffer */

  second = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (second) = 0;

  gst_buffer_memset (second, 0, 0, 4);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  gst_buffer_ref (second);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, second) == GST_FLOW_OK);

  /* ... and it is now dropped because it is too old */

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  fail_unless_equals_int (g_list_length (buffers), 0);

  /* ... and the first one is still there */

  assert_videorate_stats (videorate, "second", 2, 0, 1, 0);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  /* third buffer */

  third = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (third) = 2 * GST_SECOND;

  gst_buffer_memset (third, 0, 0, 4);

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  gst_buffer_ref (third);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, third) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  /* and now the first one should be pushed once and dupped 24 + 13 times, to

   * reach the half point between 1 s (first) and 2 s (third) */

  fail_unless_equals_int (g_list_length (buffers), 38);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  assert_videorate_stats (videorate, "third", 3, 38, 1, 37);

  /* verify last buffer */

  outbuffer = g_list_last (buffers)->data;

  fail_unless (GST_IS_BUFFER (outbuffer));

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (outbuffer),

      GST_SECOND * 37 / 25);

  /* cleanup */

  gst_buffer_unref (first);

  gst_buffer_unref (second);

  gst_buffer_unref (third);

  cleanup_videorate (videorate);

}

GST_END_TEST;

/* send frames with 0, 1, 2, 0 seconds */

GST_START_TEST (test_wrong_order)

{

  GstElement *videorate;

  GstBuffer *first, *second, *third, *fourth, *outbuffer;

  GstCaps *caps;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  assert_videorate_stats (videorate, "start", 0, 0, 0, 0);

  /* first buffer */

  first = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (first) = 0;

  gst_buffer_memset (first, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  gst_buffer_ref (first);

  GST_DEBUG ("pushing first buffer");

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, first) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  fail_unless_equals_int (g_list_length (buffers), 0);

  assert_videorate_stats (videorate, "first", 1, 0, 0, 0);

  /* second buffer */

  second = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (second) = GST_SECOND;

  gst_buffer_memset (second, 0, 0, 4);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  gst_buffer_ref (second);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, second) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  /* and it created 13 output buffers as copies of the first frame */

  fail_unless_equals_int (g_list_length (buffers), 13);

  assert_videorate_stats (videorate, "second", 2, 13, 0, 12);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  /* third buffer */

  third = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (third) = 2 * GST_SECOND;

  gst_buffer_memset (third, 0, 0, 4);

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  gst_buffer_ref (third);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, third) == GST_FLOW_OK);

  /* ... and a copy is now stuck inside videorate */

  ASSERT_BUFFER_REFCOUNT (third, "third", 1);

  /* submitting a frame with 2 seconds triggers output of 25 more frames */

  fail_unless_equals_int (g_list_length (buffers), 38);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  /* three frames submitted; two of them output as is, and 36 duplicated */

  assert_videorate_stats (videorate, "third", 3, 38, 0, 36);

  /* fourth buffer */

  fourth = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (fourth) = 0;

  gst_buffer_memset (fourth, 0, 0, 4);

  ASSERT_BUFFER_REFCOUNT (fourth, "fourth", 1);

  gst_buffer_ref (fourth);

  /* pushing gives away my reference ... */

  fail_unless (gst_pad_push (mysrcpad, fourth) == GST_FLOW_OK);

  /* ... and it is dropped */

  ASSERT_BUFFER_REFCOUNT (fourth, "fourth", 1);

  fail_unless_equals_int (g_list_length (buffers), 38);

  ASSERT_BUFFER_REFCOUNT (first, "first", 1);

  ASSERT_BUFFER_REFCOUNT (second, "second", 1);

  assert_videorate_stats (videorate, "fourth", 4, 38, 1, 36);

  /* verify last buffer */

  outbuffer = g_list_last (buffers)->data;

  fail_unless (GST_IS_BUFFER (outbuffer));

  fail_unless_equals_uint64 (GST_BUFFER_TIMESTAMP (outbuffer),

      GST_SECOND * 37 / 25);

  /* cleanup */

  gst_buffer_unref (first);

  gst_buffer_unref (second);

  gst_buffer_unref (third);

  gst_buffer_unref (fourth);

  cleanup_videorate (videorate);

}

GST_END_TEST;

/* if no framerate is negotiated, we should not be able to push a buffer */

GST_START_TEST (test_no_framerate)

{

  GstElement *videorate;

  GstBuffer *inbuffer;

  GstCaps *caps;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  inbuffer = gst_buffer_new_and_alloc (4);

  gst_buffer_memset (inbuffer, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_NO_FRAMERATE_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

  /* take a ref so we can later check refcount */

  gst_buffer_ref (inbuffer);

  /* no framerate is negotiated so pushing should fail */

  fail_if (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);

  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);

  gst_buffer_unref (inbuffer);

  fail_unless_equals_int (g_list_length (buffers), 0);

  /* cleanup */

  cleanup_videorate (videorate);

}

GST_END_TEST;

/* This test outputs 2 buffers of same dimensions (320x240), then 1 buffer of

 * differing dimensions (240x120), and then another buffer of previous

 * dimensions (320x240) and checks that the 3 buffers output as a result have

 * correct caps (first 2 with 320x240 and 3rd with 240x120).

 */

GST_START_TEST (test_changing_size)

{

  GstElement *videorate;

  GstBuffer *first;

  GstBuffer *second;

  GstBuffer *third;

  GstBuffer *fourth;

  GstBuffer *fifth;

  GstBuffer *outbuf;

  GstCaps *caps, *caps_newsize;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  first = gst_buffer_new_and_alloc (4);

  gst_buffer_memset (first, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  GST_BUFFER_TIMESTAMP (first) = 0;

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  GST_DEBUG ("pushing first buffer");

  fail_unless (gst_pad_push (mysrcpad, first) == GST_FLOW_OK);

  /* second buffer */

  second = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (second) = GST_SECOND / 25;

  gst_buffer_memset (second, 0, 0, 4);

  fail_unless (gst_pad_push (mysrcpad, second) == GST_FLOW_OK);

  fail_unless_equals_int (g_list_length (buffers), 1);

  outbuf = buffers->data;

  /* first buffer should be output here */

  fail_unless (GST_BUFFER_TIMESTAMP (outbuf) == 0);

  /* third buffer with new size */

  third = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (third) = 2 * GST_SECOND / 25;

  gst_buffer_memset (third, 0, 0, 4);

  caps_newsize = gst_caps_from_string (VIDEO_CAPS_NEWSIZE_STRING);

  gst_pad_set_caps (mysrcpad, caps_newsize);

  fail_unless (gst_pad_push (mysrcpad, third) == GST_FLOW_OK);

  /* new caps flushed the internal state, no new output yet */

  fail_unless_equals_int (g_list_length (buffers), 1);

  outbuf = g_list_last (buffers)->data;

  /* first buffer should be output here */

  //fail_unless (gst_caps_is_equal (GST_BUFFER_CAPS (outbuf), caps));

  fail_unless (GST_BUFFER_TIMESTAMP (outbuf) == 0);

  /* fourth buffer with original size */

  fourth = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (fourth) = 3 * GST_SECOND / 25;

  gst_buffer_memset (fourth, 0, 0, 4);

  gst_pad_set_caps (mysrcpad, caps);

  fail_unless (gst_pad_push (mysrcpad, fourth) == GST_FLOW_OK);

  fail_unless_equals_int (g_list_length (buffers), 1);

  /* fifth buffer with original size */

  fifth = gst_buffer_new_and_alloc (4);

  GST_BUFFER_TIMESTAMP (fifth) = 4 * GST_SECOND / 25;

  gst_buffer_memset (fifth, 0, 0, 4);

  fail_unless (gst_pad_push (mysrcpad, fifth) == GST_FLOW_OK);

  /* all four missing buffers here, dups of fourth buffer */

  fail_unless_equals_int (g_list_length (buffers), 4);

  outbuf = g_list_last (buffers)->data;

  /* third buffer should be output here */

  fail_unless (GST_BUFFER_TIMESTAMP (outbuf) == 3 * GST_SECOND / 25);

  //fail_unless (gst_caps_is_equal (GST_BUFFER_CAPS (outbuf), caps));

  gst_caps_unref (caps);

  gst_caps_unref (caps_newsize);

  cleanup_videorate (videorate);

}

GST_END_TEST;

GST_START_TEST (test_non_ok_flow)

{

  GstElement *videorate;

  GstClockTime ts;

  GstBuffer *buf;

  GstCaps *caps;

  videorate = setup_videorate ();

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  buf = gst_buffer_new_and_alloc (4);

  gst_buffer_memset (buf, 0, 0, 4);

  caps = gst_caps_from_string (VIDEO_CAPS_STRING);

  gst_check_setup_events (mysrcpad, videorate, caps, GST_FORMAT_TIME);

  gst_caps_unref (caps);

  ASSERT_BUFFER_REFCOUNT (buf, "inbuffer", 1);

  /* push a few 'normal' buffers */

  for (ts = 0; ts < 100 * GST_SECOND; ts += GST_SECOND / 33) {

    GstBuffer *inbuf;

    inbuf = gst_buffer_copy (buf);

    GST_BUFFER_TIMESTAMP (inbuf) = ts;

    fail_unless_equals_int (gst_pad_push (mysrcpad, inbuf), GST_FLOW_OK);

  }

  /* we should have buffers according to the output framerate of 25/1 */

  fail_unless_equals_int (g_list_length (buffers), 100 * 25);

  /* now deactivate pad so we get a WRONG_STATE flow return */

  gst_pad_set_active (mysinkpad, FALSE);

  /* push buffer on deactivated pad */

  fail_unless (gst_buffer_is_writable (buf));

  GST_BUFFER_TIMESTAMP (buf) = ts;

  /* pushing gives away our reference */

  fail_unless_equals_int (gst_pad_push (mysrcpad, buf), GST_FLOW_FLUSHING);

  /* cleanup */

  cleanup_videorate (videorate);

}

GST_END_TEST;

GST_START_TEST (test_upstream_caps_nego)

{

  GstElement *videorate;

  GstPad *videorate_pad;

  GstCaps *expected_caps;

  GstCaps *caps;

  GstStructure *structure;

  videorate = setup_videorate_full (&srctemplate, &downstreamsinktemplate);

  fail_unless (gst_element_set_state (videorate,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,

      "could not set to playing");

  videorate_pad = gst_element_get_static_pad (videorate, "sink");

  caps = gst_pad_query_caps (videorate_pad, NULL);

  /* assemble the expected caps */

  structure = gst_structure_from_string (VIDEO_CAPS_STRING, NULL);

  expected_caps = gst_caps_new_empty ();

  gst_caps_append_structure (expected_caps, structure);

  structure = gst_structure_copy (structure);

  gst_structure_set (structure, "framerate", GST_TYPE_FRACTION_RANGE,

      0, 1, G_MAXINT, 1, NULL);

  gst_caps_append_structure (expected_caps, structure);

  fail_unless (gst_caps_is_equal (expected_caps, caps));

  gst_caps_unref (caps);

  gst_caps_unref (expected_caps);

  gst_object_unref (videorate_pad);

  /* cleanup */

  cleanup_videorate (videorate);

}

GST_END_TEST;

GST_START_TEST (test_selected_caps)

{

  GstElement *videorate;

  GstElement *pipeline;

  GstBus *bus;

  GstMessage *msg;

  pipeline = gst_parse_launch ("videotestsrc num-buffers=1"

      " ! identity ! videorate name=videorate0 ! " VIDEO_CAPS_UNUSUAL_FRAMERATE

      " ! fakesink", NULL);

  fail_if (pipeline == NULL);

  videorate = gst_bin_get_by_name (GST_BIN (pipeline), "videorate0");

  fail_if (videorate == NULL);

  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));

  fail_if (gst_element_set_state (pipeline,

          GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE,

      "could not set to playing");

  msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE,

      GST_MESSAGE_EOS | GST_MESSAGE_ERROR);

  fail_if (msg == NULL || GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR);

  /* make sure upstream nego works right and videotestsrc has selected the

   * caps we want downstream of videorate */

  {

    GstStructure *s;

    const GValue *val;

    GstCaps *caps = NULL;

    GstPad *videorate_pad;

    videorate_pad = gst_element_get_static_pad (videorate, "sink");

    g_object_get (videorate_pad, "caps", &caps, NULL);

    fail_unless (caps != NULL);

    GST_DEBUG ("negotiated caps: %" GST_PTR_FORMAT, caps);

    s = gst_caps_get_structure (caps, 0);

    val = gst_structure_get_value (s, "framerate");

    fail_unless (val != NULL, "no framerate field in negotiated caps");

    fail_unless (GST_VALUE_HOLDS_FRACTION (val));

    fail_unless_equals_int (gst_value_get_fraction_numerator (val), 999);

    fail_unless_equals_int (gst_value_get_fraction_denominator (val), 7);

    gst_caps_unref (caps);

    gst_object_unref (videorate_pad);

  }

  /* cleanup */

  gst_object_unref (bus);

  gst_message_unref (msg);

  gst_element_set_state (pipeline, GST_STATE_NULL);

  gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);

  gst_object_unref (videorate);

  gst_object_unref (pipeline);

}

GST_END_TEST;

/* Caps negotiation tests */

typedef struct

{

  const gchar *caps;

  gboolean drop_only;

  int max_rate;

  /* Result of the videomaxrate caps after transforming */

  const gchar *expected_sink_caps;

  const gchar *expected_src_caps;

} TestInfo;

static TestInfo caps_negotiation_tests[] = {

  {

        .caps = "video/x-raw",

        .drop_only = FALSE,

        .expected_sink_caps = "video/x-raw",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]"},

  {

        .caps = "video/x-raw",

        .drop_only = FALSE,

        .max_rate = 15,

        .expected_sink_caps = "video/x-raw",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, 15]"},

  {

        .caps = "video/x-raw",

        .drop_only = TRUE,

        .expected_sink_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]"},

  {

        .caps = "video/x-raw",

        .drop_only = TRUE,

        .max_rate = 15,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)[0/1, 15];"

        "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, 15]"},

  {

        .caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

        .drop_only = FALSE,

        .expected_sink_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]"},

  {

        .caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

        .drop_only = FALSE,

        .max_rate = 15,

        .expected_sink_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, 15]"},

  {

        .caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

        .drop_only = TRUE,

        .expected_sink_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, MAX]"},

  {

        .caps = "video/x-raw, framerate=(fraction)[0/1, MAX]",

        .drop_only = TRUE,

        .max_rate = 15,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)[0/1, 15];"

        "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps = "video/x-raw, framerate=(fraction)[0/1, 15]"},

  {

        .caps = "video/x-raw, framerate=15/1",

        .drop_only = FALSE,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, MAX]"},

  {

        .caps = "video/x-raw, framerate=15/1",

        .drop_only = FALSE,

        .max_rate = 20,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, MAX]",

      .expected_src_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, 20/1]"},

  {

        .caps = "video/x-raw, framerate=15/1",

        .drop_only = TRUE,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[15/1, MAX];"

        "video/x-raw, framerate=(fraction)0/1",

      .expected_src_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, 15/1]"},

  {

        .caps = "video/x-raw, framerate=15/1",

        .drop_only = TRUE,

        .max_rate = 20,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[15/1, MAX];"

        "video/x-raw, framerate=(fraction)0/1",

      .expected_src_caps =

        "video/x-raw, framerate=(fraction)15/1;"

        "video/x-raw, framerate=(fraction)[0/1, 15/1];"},

  {

        .caps = "video/x-raw, framerate=[15/1, 30/1]",

        .drop_only = FALSE,

        .expected_sink_caps =

        "video/x-raw, framerate=(fraction)[15/1, 30/1];"

        "video/x-raw, framerate=(fraction)[0/1, MAX];",

      .expected_src_caps =

        "video/x-raw, framerate=(fraction)[15/1, 30/1];"