/* GStreamer

 *

 * 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., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#include <unistd.h>

#include <sys/ioctl.h>

#ifdef HAVE_FIONREAD_IN_SYS_FILIO

#include <sys/filio.h>

#endif

#include <gst/check/gstcheck.h>

static GstPad *mysrcpad;

static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",

    GST_PAD_SRC,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS ("application/x-gst-check")

    );

static GstElement *

setup_multifdsink (void)

{

  GstElement *multifdsink;

  GST_DEBUG ("setup_multifdsink");

  multifdsink = gst_check_setup_element ("multifdsink");

  mysrcpad = gst_check_setup_src_pad (multifdsink, &srctemplate, NULL);

  return multifdsink;

}

static void

cleanup_multifdsink (GstElement * multifdsink)

{

  GST_DEBUG ("cleanup_multifdsink");

  gst_check_teardown_src_pad (multifdsink);

  gst_check_teardown_element (multifdsink);

}

static void

wait_bytes_served (GstElement * sink, guint64 bytes)

{

  guint64 bytes_served = 0;

  while (bytes_served != bytes) {

    g_object_get (sink, "bytes-served", &bytes_served, NULL);

  }

}

/* FIXME: possibly racy, since if it would write, we may not get it

 * immediately ? */

#define fail_if_can_read(msg,fd) \

G_STMT_START { \

  long avail; \

\

  fail_if (ioctl (fd, FIONREAD, &avail) < 0, "%s: could not ioctl", msg); \

  fail_if (avail > 0, "%s: has bytes available to read"); \

} G_STMT_END;

GST_START_TEST (test_no_clients)

{

  GstElement *sink;

  GstBuffer *buffer;

  GstCaps *caps;

  sink = setup_multifdsink ();

  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);

  caps = gst_caps_from_string ("application/x-gst-check");

  buffer = gst_buffer_new_and_alloc (4);

  gst_buffer_set_caps (buffer, caps);

  gst_caps_unref (caps);

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

  GST_DEBUG ("cleaning up multifdsink");

  ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);

  cleanup_multifdsink (sink);

}

GST_END_TEST;

GST_START_TEST (test_add_client)

{

  GstElement *sink;

  GstBuffer *buffer;

  GstCaps *caps;

  int pfd[2];

  gchar data[4];

  sink = setup_multifdsink ();

  fail_if (pipe (pfd) == -1);

  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);

  /* add the client */

  g_signal_emit_by_name (sink, "add", pfd[1]);

  caps = gst_caps_from_string ("application/x-gst-check");

  GST_DEBUG ("Created test caps %p %" GST_PTR_FORMAT, caps, caps);

  buffer = gst_buffer_new_and_alloc (4);

  gst_buffer_set_caps (buffer, caps);

  ASSERT_CAPS_REFCOUNT (caps, "caps", 2);

  memcpy (GST_BUFFER_DATA (buffer), "dead", 4);

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

  GST_DEBUG ("reading");

  fail_if (read (pfd[0], data, 4) < 4);

  fail_unless (strncmp (data, "dead", 4) == 0);

  wait_bytes_served (sink, 4);

  GST_DEBUG ("cleaning up multifdsink");

  ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);

  cleanup_multifdsink (sink);

  ASSERT_CAPS_REFCOUNT (caps, "caps", 1);

  gst_caps_unref (caps);

}

GST_END_TEST;

#define fail_unless_read(msg,fd,size,ref) \

G_STMT_START { \

  char data[size + 1]; \

  int nbytes; \

\

  GST_DEBUG ("%s: reading %d bytes", msg, size); \

  nbytes = read (fd, data, size); \

  data[size] = 0; \

  GST_DEBUG ("%s: read %d bytes", msg, nbytes); \

  fail_if (nbytes < size); \

  fail_unless (memcmp (data, ref, size) == 0, \

      "data read '%s' differs from '%s'", data, ref); \

} G_STMT_END;

/* from the given two data buffers, create two streamheader buffers and

 * some caps that match it, and store them in the given pointers

 * returns  one ref to each of the buffers and the caps */

static void

gst_multifdsink_create_streamheader (const gchar * data1,

    const gchar * data2, GstBuffer ** hbuf1, GstBuffer ** hbuf2,

    GstCaps ** caps)

{

  GstBuffer *buf;

  GValue array = { 0 };

  GValue value = { 0 };

  GstStructure *structure;

  guint size1 = strlen (data1);

  guint size2 = strlen (data2);

  fail_if (hbuf1 == NULL);

  fail_if (hbuf2 == NULL);

  fail_if (caps == NULL);

  /* create caps with streamheader, set the caps, and push the IN_CAPS

   * buffers */

  *hbuf1 = gst_buffer_new_and_alloc (size1);

  GST_BUFFER_FLAG_SET (*hbuf1, GST_BUFFER_FLAG_IN_CAPS);

  memcpy (GST_BUFFER_DATA (*hbuf1), data1, size1);

  *hbuf2 = gst_buffer_new_and_alloc (size2);

  GST_BUFFER_FLAG_SET (*hbuf2, GST_BUFFER_FLAG_IN_CAPS);

  memcpy (GST_BUFFER_DATA (*hbuf2), data2, size2);

  /* we want to keep them around for the tests */

  gst_buffer_ref (*hbuf1);

  gst_buffer_ref (*hbuf2);

  g_value_init (&array, GST_TYPE_ARRAY);

  g_value_init (&value, GST_TYPE_BUFFER);

  /* we take a copy, set it on the array (which refs it), then unref our copy */

  buf = gst_buffer_copy (*hbuf1);

  gst_value_set_buffer (&value, buf);

  ASSERT_BUFFER_REFCOUNT (buf, "copied buffer", 2);

  gst_buffer_unref (buf);

  gst_value_array_append_value (&array, &value);

  g_value_unset (&value);

  g_value_init (&value, GST_TYPE_BUFFER);

  buf = gst_buffer_copy (*hbuf2);

  gst_value_set_buffer (&value, buf);

  ASSERT_BUFFER_REFCOUNT (buf, "copied buffer", 2);

  gst_buffer_unref (buf);

  gst_value_array_append_value (&array, &value);

  g_value_unset (&value);

  *caps = gst_caps_from_string ("application/x-gst-check");

  structure = gst_caps_get_structure (*caps, 0);

  gst_structure_set_value (structure, "streamheader", &array);

  g_value_unset (&array);

  ASSERT_CAPS_REFCOUNT (*caps, "streamheader caps", 1);

  /* set our streamheadery caps on the buffers */

  gst_buffer_set_caps (*hbuf1, *caps);

  gst_buffer_set_caps (*hbuf2, *caps);

  ASSERT_CAPS_REFCOUNT (*caps, "streamheader caps", 3);

  GST_DEBUG ("created streamheader caps %p %" GST_PTR_FORMAT, *caps, *caps);

}

/* this test:

 * - adds a first client

 * - sets streamheader caps on the pad

 * - pushes the IN_CAPS buffers

 * - pushes a buffer

 * - verifies that the client received all the data correctly, and did not

 *   get multiple copies of the streamheader

 * - adds a second client

 * - verifies that this second client receives the streamheader caps too, plus

 * - the new buffer

 */

GST_START_TEST (test_streamheader)

{

  GstElement *sink;

  GstBuffer *hbuf1, *hbuf2, *buf;

  GstCaps *caps;

  int pfd1[2], pfd2[2];

  sink = setup_multifdsink ();

  fail_if (pipe (pfd1) == -1);

  fail_if (pipe (pfd2) == -1);

  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);

  /* add the first client */

  g_signal_emit_by_name (sink, "add", pfd1[1]);

  /* create caps with streamheader, set the caps, and push the IN_CAPS

   * buffers */

  gst_multifdsink_create_streamheader ("babe", "deadbeef", &hbuf1, &hbuf2,

      &caps);

  fail_unless (gst_pad_set_caps (mysrcpad, caps));

  /* one is ours, two on the buffers, and one now on the pad */

  ASSERT_CAPS_REFCOUNT (caps, "caps", 4);

  fail_unless (gst_pad_push (mysrcpad, hbuf1) == GST_FLOW_OK);

  fail_unless (gst_pad_push (mysrcpad, hbuf2) == GST_FLOW_OK);

  //FIXME:

  //fail_if_can_read ("first client", pfd1[0]);

  /* push a non-IN_CAPS buffer, this should trigger the client receiving the

   * first three buffers */

  buf = gst_buffer_new_and_alloc (4);

  memcpy (GST_BUFFER_DATA (buf), "f00d", 4);

  gst_pad_push (mysrcpad, buf);

  fail_unless_read ("first client", pfd1[0], 4, "babe");

  fail_unless_read ("first client", pfd1[0], 8, "deadbeef");

  fail_unless_read ("first client", pfd1[0], 4, "f00d");

  wait_bytes_served (sink, 16);

  /* now add the second client */

  g_signal_emit_by_name (sink, "add", pfd2[1]);

  //FIXME:

  //fail_if_can_read ("second client", pfd2[0]);

  /* now push another buffer, which will trigger streamheader for second

   * client */

  buf = gst_buffer_new_and_alloc (4);

  memcpy (GST_BUFFER_DATA (buf), "deaf", 4);

  gst_pad_push (mysrcpad, buf);

  fail_unless_read ("first client", pfd1[0], 4, "deaf");

  fail_unless_read ("second client", pfd2[0], 4, "babe");

  fail_unless_read ("second client", pfd2[0], 8, "deadbeef");

  /* we missed the f00d buffer */

  fail_unless_read ("second client", pfd2[0], 4, "deaf");

  wait_bytes_served (sink, 36);

  GST_DEBUG ("cleaning up multifdsink");

  g_signal_emit_by_name (sink, "remove", pfd1[1]);

  g_signal_emit_by_name (sink, "remove", pfd2[1]);

  ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);

  cleanup_multifdsink (sink);

  ASSERT_BUFFER_REFCOUNT (hbuf1, "hbuf1", 1);

  ASSERT_BUFFER_REFCOUNT (hbuf2, "hbuf2", 1);

  gst_buffer_unref (hbuf1);

  gst_buffer_unref (hbuf2);

  ASSERT_CAPS_REFCOUNT (caps, "caps", 1);

  gst_caps_unref (caps);

}

GST_END_TEST;

/* this tests changing of streamheaders

 * - set streamheader caps on the pad

 * - pushes the IN_CAPS buffers

 * - pushes a buffer

 * - add a first client

 * - verifies that this first client receives the first streamheader caps,

 *   plus a new buffer

 * - change streamheader caps

 * - verify that the first client receives the new streamheader buffers as well

 */

GST_START_TEST (test_change_streamheader)

{

  GstElement *sink;

  GstBuffer *hbuf1, *hbuf2, *buf;

  GstCaps *caps;

  int pfd1[2], pfd2[2];

  sink = setup_multifdsink ();

  fail_if (pipe (pfd1) == -1);

  fail_if (pipe (pfd2) == -1);

  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);

  /* create caps with streamheader, set the caps, and push the IN_CAPS

   * buffers */

  gst_multifdsink_create_streamheader ("first", "header", &hbuf1, &hbuf2,

      &caps);

  fail_unless (gst_pad_set_caps (mysrcpad, caps));

  /* one is ours, two on the buffers, and one now on the pad */

  ASSERT_CAPS_REFCOUNT (caps, "caps", 4);

  /* one to hold for the test and one to give away */

  ASSERT_BUFFER_REFCOUNT (hbuf1, "hbuf1", 2);

  ASSERT_BUFFER_REFCOUNT (hbuf2, "hbuf2", 2);

  fail_unless (gst_pad_push (mysrcpad, hbuf1) == GST_FLOW_OK);

  fail_unless (gst_pad_push (mysrcpad, hbuf2) == GST_FLOW_OK);

  /* add the first client */

  g_signal_emit_by_name (sink, "add", pfd1[1]);

  /* verify this hasn't triggered a write yet */

  /* FIXME: possibly racy, since if it would write, we may not get it

   * immediately ? */

  //fail_if_can_read ("first client, no buffer", pfd1[0]);

  /* now push a buffer and read */

  buf = gst_buffer_new_and_alloc (4);

  memcpy (GST_BUFFER_DATA (buf), "f00d", 4);

  gst_pad_push (mysrcpad, buf);

  fail_unless_read ("change: first client", pfd1[0], 5, "first");

  fail_unless_read ("change: first client", pfd1[0], 6, "header");

  fail_unless_read ("change: first client", pfd1[0], 4, "f00d");

  //wait_bytes_served (sink, 16);

  /* now add the second client */

  g_signal_emit_by_name (sink, "add", pfd2[1]);

  //fail_if_can_read ("second client, no buffer", pfd2[0]);

  /* change the streamheader */

  /* before we change, multifdsink still has a list of the old streamheaders */

  ASSERT_BUFFER_REFCOUNT (hbuf1, "hbuf1", 2);

  ASSERT_BUFFER_REFCOUNT (hbuf2, "hbuf2", 2);

  gst_buffer_unref (hbuf1);

  gst_buffer_unref (hbuf2);

  /* drop our ref to the previous caps */

  gst_caps_unref (caps);

  gst_multifdsink_create_streamheader ("second", "header", &hbuf1, &hbuf2,

      &caps);

  fail_unless (gst_pad_set_caps (mysrcpad, caps));

  /* one to hold for the test and one to give away */

  ASSERT_BUFFER_REFCOUNT (hbuf1, "hbuf1", 2);

  ASSERT_BUFFER_REFCOUNT (hbuf2, "hbuf2", 2);

  fail_unless (gst_pad_push (mysrcpad, hbuf1) == GST_FLOW_OK);

  fail_unless (gst_pad_push (mysrcpad, hbuf2) == GST_FLOW_OK);

  /* verify neither client has new data available to read */

  //fail_if_can_read ("first client, changed streamheader", pfd1[0]);

  //fail_if_can_read ("second client, changed streamheader", pfd2[0]);

  /* now push another buffer, which will trigger streamheader for second

   * client, but should also send new streamheaders to first client */

  buf = gst_buffer_new_and_alloc (8);

  memcpy (GST_BUFFER_DATA (buf), "deadbabe", 8);

  gst_pad_push (mysrcpad, buf);

  fail_unless_read ("first client", pfd1[0], 6, "second");

  fail_unless_read ("first client", pfd1[0], 6, "header");

  fail_unless_read ("first client", pfd1[0], 8, "deadbabe");

  /* new streamheader data */

  fail_unless_read ("second client", pfd2[0], 6, "second");

  fail_unless_read ("second client", pfd2[0], 6, "header");

  /* we missed the f00d buffer */

  fail_unless_read ("second client", pfd2[0], 8, "deadbabe");

  //wait_bytes_served (sink, 36);

  GST_DEBUG ("cleaning up multifdsink");

  g_signal_emit_by_name (sink, "remove", pfd1[1]);

  g_signal_emit_by_name (sink, "remove", pfd2[1]);

  ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);

  /* setting to NULL should have cleared the streamheader */

  ASSERT_BUFFER_REFCOUNT (hbuf1, "hbuf1", 1);

  ASSERT_BUFFER_REFCOUNT (hbuf2, "hbuf2", 1);

  gst_buffer_unref (hbuf1);

  gst_buffer_unref (hbuf2);

  cleanup_multifdsink (sink);

  ASSERT_CAPS_REFCOUNT (caps, "caps", 1);

  gst_caps_unref (caps);

}

GST_END_TEST;

/* keep 100 bytes and burst 80 bytes to clients */

GST_START_TEST (test_burst_client_bytes)

{

  GstElement *sink;

  GstBuffer *buffer;

  GstCaps *caps;

  int pfd1[2];

  int pfd2[2];

  int pfd3[2];

  gchar data[16];

  gint i;

  guint buffers_queued;

  sink = setup_multifdsink ();

  /* make sure we keep at least 100 bytes at all times */

  g_object_set (sink, "bytes-min", 100, NULL);

  g_object_set (sink, "sync-method", 3, NULL);  /* 3 = burst */

  g_object_set (sink, "burst-unit", 3, NULL);   /* 3 = bytes */

  g_object_set (sink, "burst-value", (guint64) 80, NULL);

  fail_if (pipe (pfd1) == -1);

  fail_if (pipe (pfd2) == -1);

  fail_if (pipe (pfd3) == -1);

  ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);

  caps = gst_caps_from_string ("application/x-gst-check");

  GST_DEBUG ("Created test caps %p %" GST_PTR_FORMAT, caps, caps);

  /* push buffers in, 9 * 16 bytes = 144 bytes */

  for (i = 0; i < 9; i++) {

    gchar *data;

    buffer = gst_buffer_new_and_alloc (16);

    gst_buffer_set_caps (buffer, caps);

    /* copy some id */

    data = (gchar *) GST_BUFFER_DATA (buffer);

    g_snprintf (data, 16, "deadbee%08x", i);

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

  }

  /* check that at least 7 buffers (112 bytes) are in the queue */

  g_object_get (sink, "buffers-queued", &buffers_queued, NULL);

  fail_if (buffers_queued != 7);

  /* now add the clients */

  g_signal_emit_by_name (sink, "add", pfd1[1]);

  g_signal_emit_by_name (sink, "add_full", pfd2[1], 3,

      3, (guint64) 50, 3, (guint64) 200);

  g_signal_emit_by_name (sink, "add_full", pfd3[1], 3,

      3, (guint64) 50, 3, (guint64) 50);

  /* push last buffer to make client fds ready for reading */

  for (i = 9; i < 10; i++) {

    gchar *data;

    buffer = gst_buffer_new_and_alloc (16);

    gst_buffer_set_caps (buffer, caps);

    /* copy some id */

    data = (gchar *) GST_BUFFER_DATA (buffer);

    g_snprintf (data, 16, "deadbee%08x", i);

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

  }

  /* now we should only read the last 5 buffers (5 * 16 = 80 bytes) */

  GST_DEBUG ("Reading from client 1");

  fail_if (read (pfd1[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000005", 16) == 0);

  fail_if (read (pfd1[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000006", 16) == 0);

  fail_if (read (pfd1[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000007", 16) == 0);

  fail_if (read (pfd1[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000008", 16) == 0);

  fail_if (read (pfd1[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000009", 16) == 0);

  /* second client only bursts 50 bytes = 4 buffers (we get 4 buffers since

   * the max alows it) */

  GST_DEBUG ("Reading from client 2");

  fail_if (read (pfd2[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000006", 16) == 0);

  fail_if (read (pfd2[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000007", 16) == 0);

  fail_if (read (pfd2[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000008", 16) == 0);

  fail_if (read (pfd2[0], data, 16) < 16);

  fail_unless (strncmp (data, "deadbee00000009", 16) == 0);

  /* third client only bursts 50 bytes = 4 buffers, we can't send

   * more than 50 bytes so we only get 3 buffers (48 bytes). */