Esempi in C++ (Cpp) per gst_cmml_parser_tag_clip_to_string

Esempio n. 1

File: gstcmmlenc.c Progetto: rosciio/gst-plugins-good

static GstFlowReturn
gst_cmml_enc_push_clip (GstCmmlEnc * enc, GstCmmlTagClip * clip,
    GstClockTime prev_clip_time)
{
  GstFlowReturn res;
  GstBuffer *buffer;
  gchar *clip_string;
  gint64 granulepos;

  /* encode the clip */
  clip_string =
      (gchar *) gst_cmml_parser_tag_clip_to_string (enc->parser, clip);

  res = gst_cmml_enc_new_buffer (enc,
      (guchar *) clip_string, strlen (clip_string), &buffer);
  g_free (clip_string);
  if (res != GST_FLOW_OK)
    goto done;

  GST_INFO_OBJECT (enc, "encoding clip"
      "(start-time: %" GST_TIME_FORMAT " end-time: %" GST_TIME_FORMAT,
      GST_TIME_ARGS (clip->start_time), GST_TIME_ARGS (clip->end_time));

  /* set the granulepos */
  granulepos = gst_cmml_clock_time_to_granule (prev_clip_time, clip->start_time,
      enc->granulerate_n, enc->granulerate_d, enc->granuleshift);
  if (granulepos == -1) {
    gst_buffer_unref (buffer);
    goto granule_overflow;
  }

  GST_BUFFER_OFFSET (buffer) = clip->start_time;
  GST_BUFFER_OFFSET_END (buffer) = granulepos;
  GST_BUFFER_TIMESTAMP (buffer) = clip->start_time;

  res = gst_cmml_enc_push (enc, buffer);
  if (GST_FLOW_IS_FATAL (res))
    goto done;

  if (clip->end_time != GST_CLOCK_TIME_NONE) {
    /* create a new empty clip for the same cmml track starting at end_time
     */
    GObject *end_clip = g_object_new (GST_TYPE_CMML_TAG_CLIP,
        "start-time", clip->end_time, "track", clip->track, NULL);

    /* encode the empty end clip */
    gst_cmml_enc_push_clip (enc, GST_CMML_TAG_CLIP (end_clip),
        clip->start_time);
    g_object_unref (end_clip);
  }
done:
  return res;

granule_overflow:
  GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), ("granulepos overflow"));
  return GST_FLOW_ERROR;
}

Esempio n. 2

File: gstcmmldec.c Progetto: ChinnaSuhas/ossbuild

/* push the string representation of a clip */
static void
gst_cmml_dec_push_clip (GstCmmlDec * dec, GstCmmlTagClip * clip)
{
  GstBuffer *buffer;
  guchar *clip_str;

  GST_DEBUG_OBJECT (dec, "pushing clip %s", clip->id);

  clip_str = gst_cmml_parser_tag_clip_to_string (dec->parser, clip);
  dec->flow_return = gst_cmml_dec_new_buffer (dec,
      clip_str, strlen ((gchar *) clip_str), &buffer);
  if (dec->flow_return == GST_FLOW_OK)
    dec->flow_return = gst_pad_push (dec->srcpad, buffer);
  if (dec->flow_return == GST_FLOW_NOT_LINKED)
    dec->flow_return = GST_FLOW_OK;     /* Ignore NOT_LINKED */

  g_free (clip_str);
}

Esempio n. 3

guchar *
gst_cmml_parser_tag_object_to_string (GstCmmlParser * parser, GObject * tag)
{
  guchar *tag_string = NULL;
  GType tag_type = G_OBJECT_TYPE (tag);

  if (tag_type == GST_TYPE_CMML_TAG_STREAM)
    tag_string = gst_cmml_parser_tag_stream_to_string (parser,
        GST_CMML_TAG_STREAM (tag));
  else if (tag_type == GST_TYPE_CMML_TAG_HEAD)
    tag_string = gst_cmml_parser_tag_head_to_string (parser,
        GST_CMML_TAG_HEAD (tag));
  else if (tag_type == GST_TYPE_CMML_TAG_CLIP)
    tag_string = gst_cmml_parser_tag_clip_to_string (parser,
        GST_CMML_TAG_CLIP (tag));
  else
    g_warning ("could not convert object to cmml");

  return tag_string;
}