C++ (Cpp) gst_base_video_decoder_src_convertの例

コード例 #1

ファイル: gstbasevideodecoder.c プロジェクト: zsx/ossbuild

static gboolean
gst_base_video_decoder_src_query (GstPad * pad, GstQuery * query)
{
  GstBaseVideoDecoder *enc;
  gboolean res;

  enc = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));

  switch GST_QUERY_TYPE
    (query) {
    case GST_QUERY_CONVERT:
    {
      GstFormat src_fmt, dest_fmt;
      gint64 src_val, dest_val;

      gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
      res =
          gst_base_video_decoder_src_convert (pad, src_fmt, src_val, &dest_fmt,
          &dest_val);
      if (!res)
        goto error;
      gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
      break;
    }
    default:
      res = gst_pad_query_default (pad, query);
    }
  gst_object_unref (enc);
  return res;

error:
  GST_DEBUG_OBJECT (enc, "query failed");
  gst_object_unref (enc);
  return res;
}

コード例 #2

ファイル: gstbasevideodecoder.c プロジェクト: zsx/ossbuild

static gboolean
gst_base_video_decoder_src_event (GstPad * pad, GstEvent * event)
{
  GstBaseVideoDecoder *base_video_decoder;
  gboolean res = FALSE;

  base_video_decoder = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));

  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_SEEK:
    {
      GstFormat format, tformat;
      gdouble rate;
      GstEvent *real_seek;
      GstSeekFlags flags;
      GstSeekType cur_type, stop_type;
      gint64 cur, stop;
      gint64 tcur, tstop;

      gst_event_parse_seek (event, &rate, &format, &flags, &cur_type,
          &cur, &stop_type, &stop);
      gst_event_unref (event);

      tformat = GST_FORMAT_TIME;
      res =
          gst_base_video_decoder_src_convert (pad, format, cur, &tformat,
          &tcur);
      if (!res)
        goto convert_error;
      res =
          gst_base_video_decoder_src_convert (pad, format, stop, &tformat,
          &tstop);
      if (!res)
        goto convert_error;

      real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
          flags, cur_type, tcur, stop_type, tstop);

      res =
          gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
          (base_video_decoder), real_seek);

      break;
    }
    case GST_EVENT_QOS:
    {
      gdouble proportion;
      GstClockTimeDiff diff;
      GstClockTime timestamp;

      gst_event_parse_qos (event, &proportion, &diff, &timestamp);

      GST_OBJECT_LOCK (base_video_decoder);
      base_video_decoder->proportion = proportion;
      base_video_decoder->earliest_time = timestamp + diff;
      GST_OBJECT_UNLOCK (base_video_decoder);

      GST_DEBUG_OBJECT (base_video_decoder,
          "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT ", %g",
          GST_TIME_ARGS (timestamp), diff, proportion);

      res =
          gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
          (base_video_decoder), event);
      break;
    }
    default:
      res =
          gst_pad_push_event (GST_BASE_VIDEO_CODEC_SINK_PAD
          (base_video_decoder), event);
      break;
  }
done:
  gst_object_unref (base_video_decoder);
  return res;

convert_error:
  GST_DEBUG_OBJECT (base_video_decoder, "could not convert format");
  goto done;
}

コード例 #3

ファイル: gstbasevideodecoder.c プロジェクト: spunktsch/svtplayer

static gboolean
gst_base_video_decoder_src_query (GstPad * pad, GstQuery * query)
{
  GstBaseVideoDecoder *dec;
  gboolean res = TRUE;

  dec = GST_BASE_VIDEO_DECODER (gst_pad_get_parent (pad));

  switch GST_QUERY_TYPE
    (query) {
    case GST_QUERY_POSITION:
    {
      GstFormat format;
      gint64 time;

      gst_query_parse_position (query, &format, NULL);
      GST_DEBUG ("query in format %d", format);

      if (format != GST_FORMAT_TIME) {
        goto error;
      }

      time = dec->last_timestamp;
      time = gst_segment_to_stream_time (&dec->segment, GST_FORMAT_TIME, time);

      gst_query_set_position (query, format, time);

      res = TRUE;

      break;
    }
    case GST_QUERY_DURATION:
    {
      res = gst_pad_peer_query (dec->sinkpad, query);
      break;
    }
    case GST_QUERY_CONVERT:
    {
      GstFormat src_fmt, dest_fmt;
      gint64 src_val, dest_val;

      GST_DEBUG ("convert query");

      gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
      res =
          gst_base_video_decoder_src_convert (pad, src_fmt, src_val, &dest_fmt,
          &dest_val);
      if (!res)
        goto error;
      gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
      break;
    }
    default:
      res = gst_pad_query_default (pad, query);
    }
  gst_object_unref (dec);
  return res;

error:
  GST_ERROR_OBJECT (dec, "query failed");
  gst_object_unref (dec);
  return res;
}