C++ (Cpp) GST_AUDIO_DECODER_CAST примеры использования

Пример #1

Файл: gstvorbisdec.c Проект: Lachann/gst-plugins-base

/* FIXME 0.11: remove tag handling and let container take care of that? */
static GstFlowReturn
vorbis_handle_comment_packet (GstVorbisDec * vd, ogg_packet * packet)
{
  guint bitrate = 0;
  gchar *encoder = NULL;
  GstTagList *list;
  guint8 *data;
  gsize size;

  GST_DEBUG_OBJECT (vd, "parsing comment packet");

  data = gst_ogg_packet_data (packet);
  size = gst_ogg_packet_size (packet);

  list =
      gst_tag_list_from_vorbiscomment (data, size, (guint8 *) "\003vorbis", 7,
      &encoder);

  if (!list) {
    GST_ERROR_OBJECT (vd, "couldn't decode comments");
    list = gst_tag_list_new_empty ();
  }

  if (encoder) {
    if (encoder[0])
      gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
          GST_TAG_ENCODER, encoder, NULL);
    g_free (encoder);
  }
  gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
      GST_TAG_ENCODER_VERSION, vd->vi.version,
      GST_TAG_AUDIO_CODEC, "Vorbis", NULL);
  if (vd->vi.bitrate_nominal > 0 && vd->vi.bitrate_nominal <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_NOMINAL_BITRATE, (guint) vd->vi.bitrate_nominal, NULL);
    bitrate = vd->vi.bitrate_nominal;
  }
  if (vd->vi.bitrate_upper > 0 && vd->vi.bitrate_upper <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_MAXIMUM_BITRATE, (guint) vd->vi.bitrate_upper, NULL);
    if (!bitrate)
      bitrate = vd->vi.bitrate_upper;
  }
  if (vd->vi.bitrate_lower > 0 && vd->vi.bitrate_lower <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_MINIMUM_BITRATE, (guint) vd->vi.bitrate_lower, NULL);
    if (!bitrate)
      bitrate = vd->vi.bitrate_lower;
  }
  if (bitrate) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_BITRATE, (guint) bitrate, NULL);
  }

  gst_audio_decoder_merge_tags (GST_AUDIO_DECODER_CAST (vd), list,
      GST_TAG_MERGE_REPLACE);
  gst_tag_list_unref (list);

  return GST_FLOW_OK;
}

Пример #2

Файл: mulaw-decode.c Проект: DylanZA/gst-plugins-good

static void
gst_mulawdec_init (GstMuLawDec * mulawdec)
{
    gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (mulawdec), TRUE);
    gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
            (mulawdec), TRUE);
    GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (mulawdec));
}

Пример #3

Файл: gstsbcdec.c Проект: 0p1pp1/gst-plugins-bad

static void
gst_sbc_dec_init (GstSbcDec * dec)
{
  gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (dec), TRUE);
  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (dec), TRUE);
  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dec));

  dec->samples_per_frame = 0;
  dec->frame_len = 0;
}

Пример #4

Файл: gstspeexdec.c Проект: pexip/gst-plugins-good

static void
gst_speex_dec_init (GstSpeexDec * dec)
{
  gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (dec), TRUE);
  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (dec), TRUE);
  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dec));

  dec->enh = DEFAULT_ENH;

  gst_speex_dec_reset (dec);
}

Пример #5

Файл: gstwavpackdec.c Проект: DylanZA/gst-plugins-good

static void
gst_wavpack_dec_init (GstWavpackDec * dec)
{
  dec->context = NULL;
  dec->stream_reader = gst_wavpack_stream_reader_new ();

  gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (dec), TRUE);
  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (dec), TRUE);
  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dec));

  gst_wavpack_dec_reset (dec);
}

Пример #6

Файл: gstopusdec.c Проект: GrokImageCompression/gst-plugins-base

static void
gst_opus_dec_init (GstOpusDec * dec)
{
  dec->use_inband_fec = FALSE;
  dec->apply_gain = DEFAULT_APPLY_GAIN;

  gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (dec), TRUE);
  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (dec), TRUE);
  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dec));

  gst_opus_dec_reset (dec);
}

Пример #7

Файл: gstdtsdec.c Проект: CogentEmbedded/gst-plugins-bad

static void
gst_dtsdec_init (GstDtsDec * dtsdec)
{
  dtsdec->request_channels = DCA_CHANNEL;
  dtsdec->dynamic_range_compression = FALSE;

  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (dtsdec), TRUE);
  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dtsdec));

  /* retrieve and intercept base class chain.
   * Quite HACKish, but that's dvd specs for you,
   * since one buffer needs to be split into 2 frames */
  dtsdec->base_chain = GST_PAD_CHAINFUNC (GST_AUDIO_DECODER_SINK_PAD (dtsdec));
  gst_pad_set_chain_function (GST_AUDIO_DECODER_SINK_PAD (dtsdec),
      GST_DEBUG_FUNCPTR (gst_dtsdec_chain));
}

Пример #8

Файл: gstavauddec.c Проект: GStreamer/gst-libav

static void
gst_ffmpegauddec_init (GstFFMpegAudDec * ffmpegdec)
{
  GstFFMpegAudDecClass *klass =
      (GstFFMpegAudDecClass *) G_OBJECT_GET_CLASS (ffmpegdec);

  /* some ffmpeg data */
  ffmpegdec->context = avcodec_alloc_context3 (klass->in_plugin);
  ffmpegdec->context->opaque = ffmpegdec;
  ffmpegdec->opened = FALSE;

  ffmpegdec->frame = av_frame_alloc ();

  GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (ffmpegdec));
  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
      (ffmpegdec), TRUE);

  gst_audio_decoder_set_drainable (GST_AUDIO_DECODER (ffmpegdec), TRUE);
  gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (ffmpegdec), TRUE);
}

Пример #9

Файл: gstvorbisdec.c Проект: pli3/gst-plugins-base

static GstFlowReturn
vorbis_handle_comment_packet (GstVorbisDec * vd, ogg_packet * packet)
{
  guint bitrate = 0;
  gchar *encoder = NULL;
  GstTagList *list;
  GstBuffer *buf;

  GST_DEBUG_OBJECT (vd, "parsing comment packet");

  buf = gst_buffer_new ();
  GST_BUFFER_DATA (buf) = gst_ogg_packet_data (packet);
  GST_BUFFER_SIZE (buf) = gst_ogg_packet_size (packet);

  list =
      gst_tag_list_from_vorbiscomment_buffer (buf, (guint8 *) "\003vorbis", 7,
      &encoder);

  if (!list) {
    GST_ERROR_OBJECT (vd, "couldn't decode comments");
    list = gst_tag_list_new ();
  }

  gst_buffer_unref (buf);

  if (encoder) {
    if (encoder[0])
      gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
          GST_TAG_ENCODER, encoder, NULL);
    g_free (encoder);
  }
  gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
      GST_TAG_ENCODER_VERSION, vd->vi.version,
      GST_TAG_AUDIO_CODEC, "Vorbis", NULL);
  if (vd->vi.bitrate_nominal > 0 && vd->vi.bitrate_nominal <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_NOMINAL_BITRATE, (guint) vd->vi.bitrate_nominal, NULL);
    bitrate = vd->vi.bitrate_nominal;
  }
  if (vd->vi.bitrate_upper > 0 && vd->vi.bitrate_upper <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_MAXIMUM_BITRATE, (guint) vd->vi.bitrate_upper, NULL);
    if (!bitrate)
      bitrate = vd->vi.bitrate_upper;
  }
  if (vd->vi.bitrate_lower > 0 && vd->vi.bitrate_lower <= 0x7FFFFFFF) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_MINIMUM_BITRATE, (guint) vd->vi.bitrate_lower, NULL);
    if (!bitrate)
      bitrate = vd->vi.bitrate_lower;
  }
  if (bitrate) {
    gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
        GST_TAG_BITRATE, (guint) bitrate, NULL);
  }

  gst_audio_decoder_merge_tags (GST_AUDIO_DECODER_CAST (vd), list,
      GST_TAG_MERGE_REPLACE);
  if (vd->initialized) {
    gst_tag_list_free (list);
  } else {
    /* Only post them as messages for the time being. *
     * They will be pushed on the pad once the decoder is initialized */
    gst_element_post_message (GST_ELEMENT_CAST (vd),
        gst_message_new_tag (GST_OBJECT (vd), list));
  }

  return GST_FLOW_OK;
}