C++ GST_DEBUG函数代码示例

static gint accept_socket (HTTPServer *http_server)
{
    struct epoll_event ee;
    gint accepted_sock, ret;
    struct sockaddr in_addr;
    socklen_t in_len;
    RequestData **request_data_pointer;
    RequestData *request_data;
    gint request_data_queue_len;

    in_len = sizeof (in_addr);
    for (;;) {
        /* repeat accept until -1 returned */
        accepted_sock = accept (http_server->listen_sock, &in_addr, &in_len);
        if (accepted_sock == -1) {
            if (( errno == EAGAIN) || (errno == EWOULDBLOCK)) {
                /* We have processed all incoming connections. */
                break;

            } else {
                GST_ERROR ("accept error  %s", g_strerror (errno));
                break;
            }
        }
        g_mutex_lock (&(http_server->request_data_queue_mutex));
        request_data_queue_len = g_queue_get_length (http_server->request_data_queue);
        g_mutex_unlock (&(http_server->request_data_queue_mutex));
        if (request_data_queue_len == 0) {
            GST_ERROR ("event queue empty");
            (void) close (accepted_sock);
            //close_socket_gracefully (accepted_sock);
            continue;
        }
        GST_INFO ("request from %s:%d, accepted_sock %d", get_address (in_addr), get_port (in_addr), accepted_sock);
        http_server->total_click += 1;

        int on = 1;
        setsockopt (accepted_sock, SOL_TCP, TCP_CORK, &on, sizeof (on));
        set_nonblock (accepted_sock);
        g_mutex_lock (&(http_server->request_data_queue_mutex));
        request_data_pointer = g_queue_pop_tail (http_server->request_data_queue);
        g_mutex_unlock (&(http_server->request_data_queue_mutex));
        if (request_data_pointer == NULL) {
            GST_WARNING ("No NONE request, refuse this request.");
            (void) close (accepted_sock);
            //close_socket_gracefully (accepted_sock);
            continue;
        }
        request_data = *request_data_pointer;
        GST_DEBUG ("pop up request data, id %d, sock %d, events %d", request_data->id, accepted_sock, request_data->events);
        /* clear events, there may be events from last request. */
        request_data->events = 0;
        request_data->client_addr = in_addr;
        request_data->sock = accepted_sock;
        request_data->birth_time = gst_clock_get_time (http_server->system_clock);
        request_data->status = HTTP_CONNECTED;
        request_data->request_length = 0;
        ee.events = EPOLLIN | EPOLLOUT | EPOLLET;
        ee.data.ptr = request_data_pointer;
        ret = epoll_ctl (http_server->epollfd, EPOLL_CTL_ADD, accepted_sock, &ee);
        if (ret == -1) {
            GST_ERROR ("epoll_ctl add error %s sock %d", g_strerror (errno), accepted_sock);
            request_data_release (http_server, request_data_pointer);
            return -1;

        } else {
            GST_DEBUG ("pop request data, sock %d", request_data->sock);
        }
    }

    return 0;
}

/**
 * gst_date_time_new_from_iso8601_string:
 * @string: ISO 8601-formatted datetime string.
 *
 * Tries to parse common variants of ISO-8601 datetime strings into a
 * #GstDateTime.
 *
 * Free-function: gst_date_time_unref
 *
 * Returns: (transfer full): a newly created #GstDateTime, or NULL on error
 */
GstDateTime *
gst_date_time_new_from_iso8601_string (const gchar * string)
{
  gint year = -1, month = -1, day = -1, hour = -1, minute = -1;
  gdouble second = -1.0;
  gfloat tzoffset = 0.0;
  guint64 usecs;
  gint len, ret;

  g_return_val_if_fail (string != NULL, NULL);

  GST_DEBUG ("Parsing '%s' into a datetime", string);

  len = strlen (string);

  if (len < 4 || !g_ascii_isdigit (string[0]) || !g_ascii_isdigit (string[1])
      || !g_ascii_isdigit (string[2]) || !g_ascii_isdigit (string[3]))
    return NULL;

  ret = sscanf (string, "%04d-%02d-%02d", &year, &month, &day);

  if (ret == 0)
    return NULL;

  if (ret == 3 && day <= 0) {
    ret = 2;
    day = -1;
  }

  if (ret >= 2 && month <= 0) {
    ret = 1;
    month = day = -1;
  }

  if (ret >= 1 && year <= 0)
    return NULL;

  else if (ret >= 1 && len < 16)
    /* YMD is 10 chars. XMD + HM will be 16 chars. if it is less,
     * it make no sense to continue. We will stay with YMD. */
    goto ymd;

  string += 10;
  /* Exit if there is no expeceted value on this stage */
  if (!(*string == 'T' || *string == '-' || *string == ' '))
    goto ymd;

  /* if hour or minute fails, then we will use onlly ymd. */
  hour = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
  if (hour > 24 || *string != ':')
    goto ymd;

  /* minute */
  minute = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
  if (minute > 59)
    goto ymd;

  /* second */
  if (*string == ':') {
    second = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
    /* if we fail here, we still can reuse hour and minute. We
     * will still attempt to parse any timezone information */
    if (second > 59) {
      second = -1.0;
    } else {
      /* microseconds */
      if (*string == '.' || *string == ',') {
        const gchar *usec_start = string + 1;
        guint digits;

        usecs = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
        if (usecs != G_MAXUINT64 && string > usec_start) {
          digits = (guint) (string - usec_start);
          second += (gdouble) usecs / pow (10.0, digits);
        }
      }
    }
  }

  if (*string == 'Z')
    goto ymd_hms;
  else {
    /* reuse some code from gst-plugins-base/gst-libs/gst/tag/gstxmptag.c */
    gint gmt_offset_hour = -1, gmt_offset_min = -1, gmt_offset = -1;
    gchar *plus_pos = NULL;
    gchar *neg_pos = NULL;
    gchar *pos = NULL;

    GST_LOG ("Checking for timezone information");
//.........这里部分代码省略.........

static void
flush_data (GstRtpQDM2Depay * depay)
{
  guint i;
  guint avail;

  if ((avail = gst_adapter_available (depay->adapter)))
    gst_adapter_flush (depay->adapter, avail);

  GST_DEBUG ("Flushing %d packets", depay->nbpackets);

  for (i = 0; depay->packets[i]; i++) {
    QDM2Packet *pack = depay->packets[i];
    guint32 crc = 0;
    int i = 0;
    GstBuffer *buf;
    guint8 *data;

    /* CRC is the sum of everything (including first bytes) */

    data = pack->data;

    if (G_UNLIKELY (data == NULL))
      continue;

    /* If the packet size is bigger than 0xff, we need 2 bytes to store the size */
    if (depay->packetsize > 0xff) {
      /* Expanded size 0x02 | 0x80 */
      data[0] = 0x82;
      GST_WRITE_UINT16_BE (data + 1, depay->packetsize - 3);
    } else {
      data[0] = 0x2;
      data[1] = depay->packetsize - 2;
    }

    /* Calculate CRC */
    for (; i < depay->packetsize; i++)
      crc += data[i];

    GST_DEBUG ("CRC is 0x%x", crc);

    /* Write CRC */
    if (depay->packetsize > 0xff)
      GST_WRITE_UINT16_BE (data + 3, crc);
    else
      GST_WRITE_UINT16_BE (data + 2, crc);

    GST_MEMDUMP ("Extracted packet", data, depay->packetsize);

    buf = gst_buffer_new ();
    gst_buffer_append_memory (buf,
        gst_memory_new_wrapped (0, data, depay->packetsize, 0,
            depay->packetsize, data, g_free));

    gst_adapter_push (depay->adapter, buf);

    if (pack->data) {
      pack->data = NULL;
    }
  }
}

static void
gst_mpg123_audio_dec_class_init (GstMpg123AudioDecClass * klass)
{
  GstAudioDecoderClass *base_class;
  GstElementClass *element_class;
  GstPadTemplate *src_template, *sink_template;
  int error;

  GST_DEBUG_CATEGORY_INIT (mpg123_debug, "mpg123", 0, "mpg123 mp3 decoder");

  base_class = GST_AUDIO_DECODER_CLASS (klass);
  element_class = GST_ELEMENT_CLASS (klass);

  gst_element_class_set_static_metadata (element_class,
      "mpg123 mp3 decoder",
      "Codec/Decoder/Audio",
      "Decodes mp3 streams using the mpg123 library",
      "Carlos Rafael Giani <[email protected]>");

  /* Not using static pad template for srccaps, since the comma-separated list
   * of formats needs to be created depending on whatever mpg123 supports */
  {
    const int *format_list;
    const long *rates_list;
    size_t num, i;
    GString *s;
    GstCaps *src_template_caps;

    s = g_string_new ("audio/x-raw, ");

    mpg123_encodings (&format_list, &num);
    g_string_append (s, "format = { ");
    for (i = 0; i < num; ++i) {
      switch (format_list[i]) {
        case MPG123_ENC_SIGNED_16:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (S16));
          break;
        case MPG123_ENC_UNSIGNED_16:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (U16));
          break;
        case MPG123_ENC_SIGNED_24:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (S24));
          break;
        case MPG123_ENC_UNSIGNED_24:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (U24));
          break;
        case MPG123_ENC_SIGNED_32:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (S32));
          break;
        case MPG123_ENC_UNSIGNED_32:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (U32));
          break;
        case MPG123_ENC_FLOAT_32:
          g_string_append (s, (i > 0) ? ", " : "");
          g_string_append (s, GST_AUDIO_NE (F32));
          break;
        default:
          GST_DEBUG ("Ignoring mpg123 format %d", format_list[i]);
          break;
      }
    }
    g_string_append (s, " }, ");

    mpg123_rates (&rates_list, &num);
    g_string_append (s, "rate = (int) { ");
    for (i = 0; i < num; ++i) {
      g_string_append_printf (s, "%s%lu", (i > 0) ? ", " : "", rates_list[i]);
    }
    g_string_append (s, "}, ");

    g_string_append (s, "channels = (int) [ 1, 2 ], ");
    g_string_append (s, "layout = (string) interleaved");

    src_template_caps = gst_caps_from_string (s->str);
    src_template = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
        src_template_caps);

    g_string_free (s, TRUE);
  }

  sink_template = gst_static_pad_template_get (&static_sink_template);

  gst_element_class_add_pad_template (element_class, sink_template);
  gst_element_class_add_pad_template (element_class, src_template);

  base_class->start = GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_start);
  base_class->stop = GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_stop);
  base_class->handle_frame =
      GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_handle_frame);
  base_class->set_format = GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_set_format);
  base_class->flush = GST_DEBUG_FUNCPTR (gst_mpg123_audio_dec_flush);

  error = mpg123_init ();
  if (G_UNLIKELY (error != MPG123_OK))
//.........这里部分代码省略.........

gboolean
cam_device_open (CamDevice * device, const char *filename)
{
  ca_caps_t ca_caps;
  int ret;
  int i;
  int count = 10;

  g_return_val_if_fail (device != NULL, FALSE);
  g_return_val_if_fail (device->state == CAM_DEVICE_STATE_CLOSED, FALSE);
  g_return_val_if_fail (filename != NULL, FALSE);

  GST_INFO ("opening ca device %s", filename);

  ret = open (filename, O_RDWR);
  if (ret == -1) {
    GST_ERROR ("can't open ca device: %s", strerror (errno));
    return FALSE;
  }

  GST_DEBUG ("Successfully opened device %s", filename);

  device->fd = ret;

  ret = ioctl (device->fd, CA_RESET);

  g_usleep (G_USEC_PER_SEC / 10);

  while (TRUE) {
    /* get the capabilities of the CA */
    ret = ioctl (device->fd, CA_GET_CAP, &ca_caps);
    if (ret == -1) {
      GST_ERROR ("CA_GET_CAP ioctl failed: %s", strerror (errno));
      reset_state (device);
      return FALSE;
    }
    if (ca_caps.slot_num > 0)
      break;
    if (!count) {
      GST_ERROR ("CA_GET_CAP succeeded but not slots");
      reset_state (device);
      return FALSE;
    }
    count--;
    g_usleep (G_USEC_PER_SEC / 5);
  }

  device->tl = cam_tl_new (device->fd);
  device->sl = cam_sl_new (device->tl);
  device->al = cam_al_new (device->sl);

  device->mgr = cam_resource_manager_new ();
  cam_al_install (device->al, CAM_AL_APPLICATION (device->mgr));

  device->info = cam_application_info_new ();
  cam_al_install (device->al, CAM_AL_APPLICATION (device->info));

  device->cas = cam_conditional_access_new ();
  cam_al_install (device->al, CAM_AL_APPLICATION (device->cas));

  /* open a connection to each slot */
  for (i = 0; i < ca_caps.slot_num; ++i) {
    CamTLConnection *connection;

    ret = cam_tl_create_connection (device->tl, i, &connection);
    if (CAM_FAILED (ret)) {
      /* just ignore the slot, error out later only if no connection has been
       * established */
      GST_WARNING ("connection to slot %d failed, error: %d", i, ret);
      continue;
    }
  }

  if (g_hash_table_size (device->tl->connections) == 0) {
    GST_ERROR ("couldn't connect to any slot");

    reset_state (device);
    return FALSE;
  }

  device->state = CAM_DEVICE_STATE_OPEN;
  device->filename = g_strdup (filename);

  /* poll each connection to initiate the protocol */
  cam_tl_read_all (device->tl, TRUE);

  return TRUE;
}

/*
 * Read a new buffer from src->reqoffset, takes care of events
 * and seeking and such.
 */
static GstFlowReturn
gst_rtmp_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
{
  GstRTMPSrc *src;
  GstBuffer *buf;
  GstMapInfo map;
  guint8 *data;
  guint todo;
  gsize bsize;
  int read;
  int size;

  src = GST_RTMP_SRC (pushsrc);

  g_return_val_if_fail (src->rtmp != NULL, GST_FLOW_ERROR);

  size = GST_BASE_SRC_CAST (pushsrc)->blocksize;

  GST_DEBUG ("reading from %" G_GUINT64_FORMAT
      ", size %u", src->cur_offset, size);

  buf = gst_buffer_new_allocate (NULL, size, NULL);
  if (G_UNLIKELY (buf == NULL)) {
    GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", size);
    return GST_FLOW_ERROR;
  }

  bsize = todo = size;
  gst_buffer_map (buf, &map, GST_MAP_WRITE);
  data = map.data;
  read = bsize = 0;

  while (todo > 0) {
    read = RTMP_Read (src->rtmp, (char *) data, todo);

    if (G_UNLIKELY (read == 0 && todo == size)) {
      goto eos;
    } else if (G_UNLIKELY (read == 0)) {
      todo = 0;
      break;
    }

    if (G_UNLIKELY (read < 0))
      goto read_failed;

    if (read < todo) {
      data += read;
      todo -= read;
      bsize += read;
    } else {
      bsize += todo;
      todo = 0;
    }
    GST_LOG ("  got size %d", read);
  }
  gst_buffer_unmap (buf, &map);
  gst_buffer_resize (buf, 0, bsize);

  if (src->discont) {
    GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
    src->discont = FALSE;
  }

  GST_BUFFER_TIMESTAMP (buf) = src->last_timestamp;
  GST_BUFFER_OFFSET (buf) = src->cur_offset;

  src->cur_offset += size;
  if (src->last_timestamp == GST_CLOCK_TIME_NONE)
    src->last_timestamp = src->rtmp->m_mediaStamp * GST_MSECOND;
  else
    src->last_timestamp =
        MAX (src->last_timestamp, src->rtmp->m_mediaStamp * GST_MSECOND);

  GST_LOG_OBJECT (src, "Created buffer of size %u at %" G_GINT64_FORMAT
      " with timestamp %" GST_TIME_FORMAT, size, GST_BUFFER_OFFSET (buf),
      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));


  /* we're done, return the buffer */
  *buffer = buf;

  return GST_FLOW_OK;

read_failed:
  {
    gst_buffer_unref (buf);
    GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), ("Failed to read data"));
    return GST_FLOW_ERROR;
  }
eos:
  {
    gst_buffer_unref (buf);
    if (src->cur_offset == 0) {
      GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
          ("Failed to read any data from stream, check your URL"));
      return GST_FLOW_ERROR;
//.........这里部分代码省略.........

gboolean
gst_ffmpegvidenc_register (GstPlugin * plugin)
{
  GTypeInfo typeinfo = {
    sizeof (GstFFMpegVidEncClass),
    (GBaseInitFunc) gst_ffmpegvidenc_base_init,
    NULL,
    (GClassInitFunc) gst_ffmpegvidenc_class_init,
    NULL,
    NULL,
    sizeof (GstFFMpegVidEnc),
    0,
    (GInstanceInitFunc) gst_ffmpegvidenc_init,
  };
  GType type;
  AVCodec *in_plugin;


  GST_LOG ("Registering encoders");

  /* build global ffmpeg param/property info */
  gst_ffmpeg_cfg_init ();

  in_plugin = av_codec_next (NULL);
  while (in_plugin) {
    gchar *type_name;

    /* Skip non-AV codecs */
    if (in_plugin->type != AVMEDIA_TYPE_VIDEO)
      goto next;

    /* no quasi codecs, please */
    if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
        in_plugin->id == AV_CODEC_ID_V210 ||
        in_plugin->id == AV_CODEC_ID_V210X ||
        in_plugin->id == AV_CODEC_ID_R210
        || in_plugin->id == AV_CODEC_ID_ZLIB) {
      goto next;
    }

    /* No encoders depending on external libraries (we don't build them, but
     * people who build against an external ffmpeg might have them.
     * We have native gstreamer plugins for all of those libraries anyway. */
    if (!strncmp (in_plugin->name, "lib", 3)) {
      GST_DEBUG
          ("Not using external library encoder %s. Use the gstreamer-native ones instead.",
          in_plugin->name);
      goto next;
    }

    /* only video encoders */
    if (!av_codec_is_encoder (in_plugin)
        || in_plugin->type != AVMEDIA_TYPE_VIDEO)
      goto next;

    /* FIXME : We should have a method to know cheaply whether we have a mapping
     * for the given plugin or not */

    GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);

    /* no codecs for which we're GUARANTEED to have better alternatives */
    if (!strcmp (in_plugin->name, "gif")) {
      GST_LOG ("Ignoring encoder %s", in_plugin->name);
      goto next;
    }

    /* construct the type */
    type_name = g_strdup_printf ("avenc_%s", in_plugin->name);

    type = g_type_from_name (type_name);

    if (!type) {

      /* create the glib type now */
      type =
          g_type_register_static (GST_TYPE_VIDEO_ENCODER, type_name, &typeinfo,
          0);
      g_type_set_qdata (type, GST_FFENC_PARAMS_QDATA, (gpointer) in_plugin);

      {
        static const GInterfaceInfo preset_info = {
          NULL,
          NULL,
          NULL
        };
        g_type_add_interface_static (type, GST_TYPE_PRESET, &preset_info);
      }
    }

    if (!gst_element_register (plugin, type_name, GST_RANK_SECONDARY, type)) {
      g_free (type_name);
      return FALSE;
    }

    g_free (type_name);

  next:
    in_plugin = av_codec_next (in_plugin);
  }

//.........这里部分代码省略.........

/* returns the pointer in @str to the #version declaration */
const gchar *
_gst_glsl_shader_string_find_version (const gchar * str)
{
  gboolean sl_comment = FALSE;
  gboolean ml_comment = FALSE;
  gboolean newline = TRUE;
  gint i = 0;

  _init_debug ();

  /* search for #version while allowing for preceeding comments/whitespace as
   * permitted by the GLSL specification */
  while (str && str[i] != '\0' && i < 1024) {
    if (str[i] == '\n' || str[i] == '\r') {
      newline = TRUE;
      sl_comment = FALSE;
      i++;
      continue;
    }

    if (g_ascii_isspace (str[i]))
      goto next;

    if (sl_comment)
      goto next;

    if (ml_comment) {
      if (g_strstr_len (&str[i], 2, "*/")) {
        ml_comment = FALSE;
        i++;
      }
      goto next;
    }

    if (g_strstr_len (&str[i], 2, "//")) {
      sl_comment = TRUE;
      i++;
      goto next;
    }

    if (g_strstr_len (&str[i], 2, "/*")) {
      ml_comment = TRUE;
      i++;
      goto next;
    }

    if (str[i] == '#') {
      if (newline && _check_valid_version_preprocessor_string (&str[i])) {
        GST_DEBUG ("found #version declaration at index %i", i);
        return &str[i];
      }
      break;
    }

  next:
    newline = FALSE;
    i++;
  }

  GST_DEBUG ("no #version declaration found in the first 1K");

  return NULL;
}

static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
  GstGoom *goom;
  GstFlowReturn ret;
  GstBuffer *outbuf = NULL;

  goom = GST_GOOM (gst_pad_get_parent (pad));
    
  /* If we don't have an output format yet, preallocate a buffer to try and
   * set one */
  if (GST_PAD_CAPS (goom->srcpad) == NULL) {
    ret = get_buffer (goom, &outbuf);
    if (ret != GST_FLOW_OK) {
      gst_buffer_unref (buffer);
      goto beach;
    }
  }
  
  /* don't try to combine samples from discont buffer */
  if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
    gst_adapter_clear (goom->adapter);
    goom->next_ts = -1;
  }

  /* Match timestamps from the incoming audio */
  if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE)
    goom->next_ts = GST_BUFFER_TIMESTAMP (buffer);

  GST_DEBUG_OBJECT (goom,
      "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
      GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));

  /* Collect samples until we have enough for an output frame */
  gst_adapter_push (goom->adapter, buffer);

  ret = GST_FLOW_OK;

  while (TRUE) {
    const guint16 *data;
    gboolean need_skip;
    guchar *out_frame;
    gint i, c;
    guint avail, to_flush;
	
	Message m;

    avail = gst_adapter_available (goom->adapter);
    GST_DEBUG_OBJECT (goom, "avail now %u", avail);

    /* we need GOOM_SAMPLES to get a meaningful result from goom. */
    if (avail < (GOOM_SAMPLES * goom->bps))
      break;

    /* we also need enough samples to produce one frame at least */
    if (avail < goom->bpf)
      break;

    GST_DEBUG_OBJECT (goom, "processing buffer");

    if (goom->next_ts != -1) {
      gint64 qostime;

      qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
          goom->next_ts);

      GST_OBJECT_LOCK (goom);
      /* check for QoS, don't compute buffers that are known to be late */
      need_skip = goom->earliest_time != -1 && qostime <= goom->earliest_time;
      GST_OBJECT_UNLOCK (goom);

      if (need_skip) {
        GST_WARNING_OBJECT (goom,
            "QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
            GST_TIME_ARGS (qostime), GST_TIME_ARGS (goom->earliest_time));
        goto skip;
      }
    }

    /* get next GOOM_SAMPLES, we have at least this amount of samples */
    data =
        (const guint16 *) gst_adapter_peek (goom->adapter,
        GOOM_SAMPLES * goom->bps);

    if (goom->channels == 2) {
      for (i = 0; i < GOOM_SAMPLES; i++) {
        goom->datain[0][i] = *data++;
        goom->datain[1][i] = *data++;
      }
    } else {
      for (i = 0; i < GOOM_SAMPLES; i++) {
        goom->datain[0][i] = *data;
        goom->datain[1][i] = *data++;
      }
    }

    /* alloc a buffer if we don't have one yet, this happens
     * when we pushed a buffer in this while loop before */
    if (outbuf == NULL) {
      ret = get_buffer (goom, &outbuf);
//.........这里部分代码省略.........

/* Process pending events. Call with ->lock held */
static void
gst_sdlv_process_events (GstSDLVideoSink * sdlvideosink)
{
  SDL_Event event;
  int numevents;
  char *keysym = NULL;

  do {
    SDL_PumpEvents ();
    numevents = SDL_PeepEvents (&event, 1, SDL_GETEVENT,
        SDL_KEYDOWNMASK | SDL_KEYUPMASK |
        SDL_MOUSEMOTIONMASK | SDL_MOUSEBUTTONDOWNMASK |
        SDL_MOUSEBUTTONUPMASK | SDL_QUITMASK | SDL_VIDEORESIZEMASK);

    if (numevents > 0 && (event.type == SDL_KEYUP || event.type == SDL_KEYDOWN)) {
      keysym = SDL_GetKeyName (event.key.keysym.sym);
    }

    if (numevents > 0) {
      g_mutex_unlock (sdlvideosink->lock);
      switch (event.type) {
        case SDL_MOUSEMOTION:
          gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
              "mouse-move", 0, event.motion.x, event.motion.y);
          break;
        case SDL_MOUSEBUTTONDOWN:
          gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
              "mouse-button-press",
              event.button.button, event.button.x, event.button.y);
          break;
        case SDL_MOUSEBUTTONUP:
          gst_navigation_send_mouse_event (GST_NAVIGATION (sdlvideosink),
              "mouse-button-release",
              event.button.button, event.button.x, event.button.y);
          break;
        case SDL_KEYUP:
          GST_DEBUG ("key press event %s !",
              SDL_GetKeyName (event.key.keysym.sym));
          gst_navigation_send_key_event (GST_NAVIGATION (sdlvideosink),
              "key-release", keysym);
          break;
        case SDL_KEYDOWN:
          if (SDLK_ESCAPE != event.key.keysym.sym) {
            GST_DEBUG ("key press event %s !",
                SDL_GetKeyName (event.key.keysym.sym));
            gst_navigation_send_key_event (GST_NAVIGATION (sdlvideosink),
                "key-press", keysym);
            break;
          } else {
            /* fall through */
          }
        case SDL_QUIT:
          sdlvideosink->running = FALSE;
          GST_ELEMENT_ERROR (sdlvideosink, RESOURCE, OPEN_WRITE,
              ("Video output device is gone."),
              ("We were running fullscreen and user "
                  "pressed the ESC key, stopping playback."));
          break;
        case SDL_VIDEORESIZE:
          /* create a SDL window of the size requested by the user */
          g_mutex_lock (sdlvideosink->lock);
          GST_VIDEO_SINK_WIDTH (sdlvideosink) = event.resize.w;
          GST_VIDEO_SINK_HEIGHT (sdlvideosink) = event.resize.h;
          gst_sdlvideosink_create (sdlvideosink);
          g_mutex_unlock (sdlvideosink->lock);
          break;
      }
      g_mutex_lock (sdlvideosink->lock);
    }
  } while (numevents > 0);
}

/* Must be called with the sdl lock held */
static gboolean
gst_sdlvideosink_create (GstSDLVideoSink * sdlvideosink)
{
  if (GST_VIDEO_SINK_HEIGHT (sdlvideosink) <= 0)
    GST_VIDEO_SINK_HEIGHT (sdlvideosink) = sdlvideosink->height;
  if (GST_VIDEO_SINK_WIDTH (sdlvideosink) <= 0)
    GST_VIDEO_SINK_WIDTH (sdlvideosink) = sdlvideosink->width;

  gst_sdlvideosink_destroy (sdlvideosink);

  if (sdlvideosink->is_xwindows && !sdlvideosink->xwindow_id) {
    g_mutex_unlock (sdlvideosink->lock);
    gst_x_overlay_prepare_xwindow_id (GST_X_OVERLAY (sdlvideosink));
    g_mutex_lock (sdlvideosink->lock);
  }

  /* create a SDL window of the size requested by the user */
  if (sdlvideosink->full_screen) {
    sdlvideosink->screen =
        SDL_SetVideoMode (GST_VIDEO_SINK_WIDTH (sdlvideosink),
        GST_VIDEO_SINK_HEIGHT (sdlvideosink), 0,
        SDL_SWSURFACE | SDL_FULLSCREEN);
  } else {
    sdlvideosink->screen =
        SDL_SetVideoMode (GST_VIDEO_SINK_WIDTH (sdlvideosink),
        GST_VIDEO_SINK_HEIGHT (sdlvideosink), 0, SDL_HWSURFACE | SDL_RESIZABLE);
  }
  if (sdlvideosink->screen == NULL)
    goto no_screen;

  /* create a new YUV overlay */
  sdlvideosink->overlay = SDL_CreateYUVOverlay (sdlvideosink->width,
      sdlvideosink->height, sdlvideosink->format, sdlvideosink->screen);
  if (sdlvideosink->overlay == NULL)
    goto no_overlay;


  GST_DEBUG ("Using a %dx%d %dbpp SDL screen with a %dx%d \'%"
      GST_FOURCC_FORMAT "\' YUV overlay", GST_VIDEO_SINK_WIDTH (sdlvideosink),
      GST_VIDEO_SINK_HEIGHT (sdlvideosink),
      sdlvideosink->screen->format->BitsPerPixel, sdlvideosink->width,
      sdlvideosink->height, GST_FOURCC_ARGS (sdlvideosink->format));

  sdlvideosink->rect.x = 0;
  sdlvideosink->rect.y = 0;
  sdlvideosink->rect.w = GST_VIDEO_SINK_WIDTH (sdlvideosink);
  sdlvideosink->rect.h = GST_VIDEO_SINK_HEIGHT (sdlvideosink);

  /*SDL_DisplayYUVOverlay (sdlvideosink->overlay, &(sdlvideosink->rect)); */

  GST_DEBUG ("sdlvideosink: setting %08x (%" GST_FOURCC_FORMAT ")",
      sdlvideosink->format, GST_FOURCC_ARGS (sdlvideosink->format));

  return TRUE;

  /* ERRORS */
no_screen:
  {
    GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
        ("SDL: Couldn't set %dx%d: %s", GST_VIDEO_SINK_WIDTH (sdlvideosink),
            GST_VIDEO_SINK_HEIGHT (sdlvideosink), SDL_GetError ()));
    return FALSE;
  }
no_overlay:
  {
    GST_ELEMENT_ERROR (sdlvideosink, LIBRARY, TOO_LAZY, (NULL),
        ("SDL: Couldn't create SDL YUV overlay (%dx%d \'%" GST_FOURCC_FORMAT
            "\'): %s", sdlvideosink->width, sdlvideosink->height,
            GST_FOURCC_ARGS (sdlvideosink->format), SDL_GetError ()));
    return FALSE;
  }
}

static int
gst_dv1394src_iso_receive (raw1394handle_t handle, int channel, size_t len,
    quadlet_t * data)
{
  GstDV1394Src *dv1394src = gst_dv1394src_from_raw1394handle (handle);

  if (len > 16) {
    /*
       the following code taken from kino-0.51 (Dan Dennedy/Charles Yates)
       Kindly relicensed under the LGPL. See the commit log for version 1.6 of
       this file in CVS.
     */
    unsigned char *p = (unsigned char *) &data[3];

    int section_type = p[0] >> 5;       /* section type is in bits 5 - 7 */
    int dif_sequence = p[1] >> 4;       /* dif sequence number is in bits 4 - 7 */
    int dif_block = p[2];

    /* if we are at the beginning of a frame, 
       we set buf=frame, and alloc a new buffer for frame
     */
    if (section_type == 0 && dif_sequence == 0) {       // dif header
      if (!GST_PAD_CAPS (GST_BASE_SRC_PAD (dv1394src))) {
        GstCaps *caps;

        // figure format (NTSC/PAL)
        if (p[3] & 0x80) {
          // PAL
          dv1394src->frame_size = PAL_FRAMESIZE;
          dv1394src->frame_rate = PAL_FRAMERATE;
          GST_DEBUG ("PAL data");
          caps = gst_caps_new_simple ("video/x-dv",
              "format", G_TYPE_STRING, "PAL",
              "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
        } else {
          // NTSC (untested)
          dv1394src->frame_size = NTSC_FRAMESIZE;
          dv1394src->frame_rate = NTSC_FRAMERATE;
          GST_DEBUG
              ("NTSC data [untested] - please report success/failure to <[email protected]>");
          caps = gst_caps_new_simple ("video/x-dv",
              "format", G_TYPE_STRING, "NTSC",
              "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
        }
        gst_pad_set_caps (GST_BASE_SRC_PAD (dv1394src), caps);
        gst_caps_unref (caps);
      }
      // drop last frame when not complete
      if (!dv1394src->drop_incomplete
          || dv1394src->bytes_in_frame == dv1394src->frame_size) {
        dv1394src->buf = dv1394src->frame;
      } else {
        GST_INFO_OBJECT (GST_ELEMENT (dv1394src), "incomplete frame dropped");
        g_signal_emit (G_OBJECT (dv1394src),
            gst_dv1394src_signals[SIGNAL_FRAME_DROPPED], 0);
        if (dv1394src->frame) {
          gst_buffer_unref (dv1394src->frame);
        }
      }
      if ((dv1394src->frame_sequence + 1) % (dv1394src->skip +
              dv1394src->consecutive) < dv1394src->consecutive) {
        GstBuffer *buf;
        gint64 i64;

        buf = gst_buffer_new_and_alloc (dv1394src->frame_size);

        /* fill in offset, duration, timestamp */
        GST_BUFFER_OFFSET (buf) = dv1394src->frame_sequence;
        dv1394src->frame = buf;
      }
      dv1394src->frame_sequence++;
      dv1394src->bytes_in_frame = 0;
    }

    if (dv1394src->frame != NULL) {
      guint8 *data = GST_BUFFER_DATA (dv1394src->frame);

      switch (section_type) {
        case 0:                /* 1 Header block */
          /* p[3] |= 0x80; // hack to force PAL data */
          memcpy (data + dif_sequence * 150 * 80, p, 480);
          break;

        case 1:                /* 2 Subcode blocks */
          memcpy (data + dif_sequence * 150 * 80 + (1 + dif_block) * 80, p,
              480);
          break;

        case 2:                /* 3 VAUX blocks */
          memcpy (data + dif_sequence * 150 * 80 + (3 + dif_block) * 80, p,
              480);
          break;

        case 3:                /* 9 Audio blocks interleaved with video */
          memcpy (data + dif_sequence * 150 * 80 + (6 + dif_block * 16) * 80, p,
              480);
          break;

        case 4:                /* 135 Video blocks interleaved with audio */
          memcpy (data + dif_sequence * 150 * 80 + (7 + (dif_block / 15) +
//.........这里部分代码省略.........

static gboolean
register_plugin (GstPlugin * plugin, const gchar * vendor,
    const gchar * filename)
{
  GModule *module;
  GstFrei0rPluginRegisterReturn ret = GST_FREI0R_PLUGIN_REGISTER_RETURN_FAILED;
  GstFrei0rFuncTable ftable = { NULL, };
  gint i;
  f0r_plugin_info_t info = { NULL, };
  f0r_instance_t *instance = NULL;

  GST_DEBUG ("Registering plugin '%s'", filename);

  module = g_module_open (filename, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
  if (!module) {
    GST_WARNING ("Failed to load plugin");
    return FALSE;
  }

  if (!g_module_symbol (module, "f0r_init", (gpointer *) & ftable.init)) {
    GST_INFO ("No frei0r plugin");
    g_module_close (module);
    return FALSE;
  }

  if (!g_module_symbol (module, "f0r_deinit", (gpointer *) & ftable.deinit) ||
      !g_module_symbol (module, "f0r_construct",
          (gpointer *) & ftable.construct)
      || !g_module_symbol (module, "f0r_destruct",
          (gpointer *) & ftable.destruct)
      || !g_module_symbol (module, "f0r_get_plugin_info",
          (gpointer *) & ftable.get_plugin_info)
      || !g_module_symbol (module, "f0r_get_param_info",
          (gpointer *) & ftable.get_param_info)
      || !g_module_symbol (module, "f0r_set_param_value",
          (gpointer *) & ftable.set_param_value)
      || !g_module_symbol (module, "f0r_get_param_value",
          (gpointer *) & ftable.get_param_value))
    goto invalid_frei0r_plugin;

  /* One of these must exist */
  g_module_symbol (module, "f0r_update", (gpointer *) & ftable.update);
  g_module_symbol (module, "f0r_update2", (gpointer *) & ftable.update2);

  if (!ftable.init ()) {
    GST_WARNING ("Failed to initialize plugin");
    g_module_close (module);
    return FALSE;
  }

  if (!ftable.update && !ftable.update2)
    goto invalid_frei0r_plugin;

  ftable.get_plugin_info (&info);

  if (info.frei0r_version > 1) {
    GST_WARNING ("Unsupported frei0r version %d", info.frei0r_version);
    ftable.deinit ();
    g_module_close (module);
    return FALSE;
  }

  if (info.color_model > F0R_COLOR_MODEL_PACKED32) {
    GST_WARNING ("Unsupported color model %d", info.color_model);
    ftable.deinit ();
    g_module_close (module);
    return FALSE;
  }

  for (i = 0; i < info.num_params; i++) {
    f0r_param_info_t pinfo = { NULL, };

    ftable.get_param_info (&pinfo, i);
    if (pinfo.type > F0R_PARAM_STRING) {
      GST_WARNING ("Unsupported parameter type %d", pinfo.type);
      ftable.deinit ();
      g_module_close (module);
      return FALSE;
    }
  }

  instance = ftable.construct (640, 480);
  if (!instance) {
    GST_WARNING ("Failed to instanciate plugin '%s'", info.name);
    ftable.deinit ();
    g_module_close (module);
    return FALSE;
  }
  ftable.destruct (instance);

  switch (info.plugin_type) {
    case F0R_PLUGIN_TYPE_FILTER:
      ret = gst_frei0r_filter_register (plugin, vendor, &info, &ftable);
      break;
    case F0R_PLUGIN_TYPE_SOURCE:
      ret = gst_frei0r_src_register (plugin, vendor, &info, &ftable);
      break;
    case F0R_PLUGIN_TYPE_MIXER2:
    case F0R_PLUGIN_TYPE_MIXER3:
      ret = gst_frei0r_mixer_register (plugin, vendor, &info, &ftable);
//.........这里部分代码省略.........

static void thread_pool_func (gpointer data, gpointer user_data)
{
    HTTPServer *http_server = (HTTPServer *)user_data;
    RequestData **request_data_pointer = data;
    RequestData *request_data = *request_data_pointer;
    gint ret;
    GstClockTime cb_ret;

    GST_DEBUG ("EVENT %d, status %d, sock %d", request_data->events, request_data->status, request_data->sock);
    g_mutex_lock (&(request_data->events_mutex));
    if (request_data->events & (EPOLLHUP | EPOLLERR)) {
        request_data->status = HTTP_FINISH;
        request_data->events = 0;

    } else if (request_data->events & EPOLLOUT) {
        if ((request_data->status == HTTP_IDLE) || (request_data->status == HTTP_BLOCK)) {
            request_data->status = HTTP_CONTINUE;
        }
        request_data->events ^= EPOLLOUT;

    } else if (request_data->events & EPOLLIN) {
        if ((request_data->status == HTTP_IDLE) || (request_data->status == HTTP_BLOCK)) {
            /* in normal play status */
            ret = read_request (request_data);
            if (ret < 0) {
                request_data->status = HTTP_FINISH;

            } else {
                GST_DEBUG ("Unexpected request arrived, ignore.");
                request_data->status = HTTP_CONTINUE;
            }
        } 
        /* HTTP_REQUEST status */
        request_data->events ^= EPOLLIN;

    } else if ((request_data->status == HTTP_IDLE) || (request_data->status == HTTP_BLOCK)) {
        /* no event, popup from idle queue or block queue */
        request_data->status = HTTP_CONTINUE;

    } else {
        GST_WARNING ("warning!!! unprocessed event, sock %d status %d events %d", request_data->sock, request_data->status, request_data->events);
    }
    g_mutex_unlock (&(request_data->events_mutex));

    if (request_data->status == HTTP_REQUEST) {
        ret = read_request (request_data);
        if (ret < 0) {
            request_data_release (http_server, request_data_pointer);
            return;
        } 

        ret = parse_request (request_data);
        if (ret == 0) {
            /* parse complete, call back user function */
            request_data->events ^= EPOLLIN;
            invoke_user_callback (http_server, request_data_pointer);

        } else if (ret == 1) {
            /* need read more data */
            g_mutex_lock (&(http_server->block_queue_mutex));
            g_queue_push_head (http_server->block_queue, request_data_pointer);
            g_mutex_unlock (&(http_server->block_queue_mutex));
            return;

        } else if (ret == 2) {
            /* Not Implemented */
            GST_WARNING ("Not Implemented, return is %d, sock is %d", ret, request_data->sock);
            gchar *buf = g_strdup_printf (http_501, PACKAGE_NAME, PACKAGE_VERSION);
            if (httpserver_write (request_data->sock, buf, strlen (buf)) != strlen (buf)) {
                GST_ERROR ("write sock %d error.", request_data->sock);
            }
            g_free (buf);
            request_data_release (http_server, request_data_pointer);

        } else {
            /* Bad Request */
            GST_WARNING ("Bad request, return is %d, sock is %d", ret, request_data->sock);
            gchar *buf = g_strdup_printf (http_400, PACKAGE_NAME, PACKAGE_VERSION);
            if (httpserver_write (request_data->sock, buf, strlen (buf)) != strlen (buf)) {
                GST_ERROR ("write sock %d error.", request_data->sock);
            }
            g_free (buf);
            request_data_release (http_server, request_data_pointer);
        }

    } else if (request_data->status == HTTP_CONTINUE) {
        invoke_user_callback (http_server, request_data_pointer);

    } else if (request_data->status == HTTP_FINISH) { // FIXME: how about if have continue request in idle queue??
        cb_ret = http_server->user_callback (request_data, http_server->user_data);
        GST_DEBUG ("request finish %d callback return %lu, send %lu", request_data->sock, cb_ret, request_data->bytes_send);
        if (cb_ret == 0) {
            g_mutex_lock (&(http_server->idle_queue_mutex));
            g_tree_remove (http_server->idle_queue, &(request_data->wakeup_time));
            g_mutex_unlock (&(http_server->idle_queue_mutex));
            request_data_release (http_server, request_data_pointer);
        }
    }
}

//.........这里部分代码省略.........
      NULL, NULL, &flags, udpsrc->cancellable, &err);

  if (G_UNLIKELY (res < 0)) {
    /* EHOSTUNREACH for a UDP socket means that a packet sent with udpsink
     * generated a "port unreachable" ICMP response. We ignore that and try
     * again. */
    if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_HOST_UNREACHABLE)) {
      g_clear_error (&err);
      goto retry;
    }
    goto receive_error;
  }

  /* remember maximum packet size */
  if (res > udpsrc->max_size)
    udpsrc->max_size = res;

  outbuf = gst_buffer_new ();

  /* append first memory chunk to buffer */
  gst_buffer_append_memory (outbuf, udpsrc->mem);

  /* if the packet didn't fit into the first chunk, add second one as well */
  if (res > udpsrc->map.size) {
    gst_buffer_append_memory (outbuf, udpsrc->mem_max);
    gst_memory_unmap (udpsrc->mem_max, &udpsrc->map_max);
    udpsrc->vec[1].buffer = NULL;
    udpsrc->vec[1].size = 0;
    udpsrc->mem_max = NULL;
  }

  /* make sure we allocate a new chunk next time (we do this only here because
   * we look at map.size to see if the second memory chunk is needed above) */
  gst_memory_unmap (udpsrc->mem, &udpsrc->map);
  udpsrc->vec[0].buffer = NULL;
  udpsrc->vec[0].size = 0;
  udpsrc->mem = NULL;

  offset = udpsrc->skip_first_bytes;

  if (G_UNLIKELY (offset > 0 && res < offset))
    goto skip_error;

  gst_buffer_resize (outbuf, offset, res - offset);

  /* use buffer metadata so receivers can also track the address */
  if (saddr) {
    gst_buffer_add_net_address_meta (outbuf, saddr);
    g_object_unref (saddr);
    saddr = NULL;
  }

  GST_LOG_OBJECT (udpsrc, "read packet of %d bytes", (int) res);

  *buf = GST_BUFFER_CAST (outbuf);

  return GST_FLOW_OK;

  /* ERRORS */
memory_alloc_error:
  {
    GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
        ("Failed to allocate or map memory"));
    return GST_FLOW_ERROR;
  }
select_error:
  {
    GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
        ("select error: %s", err->message));
    g_clear_error (&err);
    return GST_FLOW_ERROR;
  }
stopped:
  {
    GST_DEBUG ("stop called");
    g_clear_error (&err);
    return GST_FLOW_FLUSHING;
  }
receive_error:
  {
    if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY) ||
        g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
      g_clear_error (&err);
      return GST_FLOW_FLUSHING;
    } else {
      GST_ELEMENT_ERROR (udpsrc, RESOURCE, READ, (NULL),
          ("receive error %" G_GSSIZE_FORMAT ": %s", res, err->message));
      g_clear_error (&err);
      return GST_FLOW_ERROR;
    }
  }
skip_error:
  {
    gst_buffer_unref (outbuf);

    GST_ELEMENT_ERROR (udpsrc, STREAM, DECODE, (NULL),
        ("UDP buffer to small to skip header"));
    return GST_FLOW_ERROR;
  }
}