Ejemplos de gst_audio_info_convert en C++ (Cpp)

Ejemplo n.º 1

Archivo: audiosynth.c Proyecto: Buzztrax/buzztrax

static gboolean
gstbt_audio_synth_query (GstBaseSrc * basesrc, GstQuery * query)
{
  GstBtAudioSynth *src = GSTBT_AUDIO_SYNTH (basesrc);
  gboolean res = FALSE;

  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);
      if ((res = gst_audio_info_convert (&src->info, src_fmt, src_val, dest_fmt,
                  &dest_val))) {
        gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
      }
      break;
    }
    default:
      res =
          GST_BASE_SRC_CLASS (gstbt_audio_synth_parent_class)->query (basesrc,
          query);
      break;
  }

  return res;
}

Ejemplo n.º 2

Archivo: tinyalsasink.c Proyecto: jhgorse/gst-plugins-bad

static void
pcm_config_from_spec (struct pcm_config *config,
    const GstAudioRingBufferSpec * spec)
{
  gint64 frames;

  config->format = pcm_format_from_gst (GST_AUDIO_INFO_FORMAT (&spec->info));
  config->channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
  config->rate = GST_AUDIO_INFO_RATE (&spec->info);

  gst_audio_info_convert (&spec->info,
      GST_FORMAT_TIME, spec->latency_time * GST_USECOND,
      GST_FORMAT_DEFAULT /* frames */ , &frames);

  config->period_size = frames;
  config->period_count = spec->buffer_time / spec->latency_time;
}

Ejemplo n.º 3

Archivo: gstladspasource.c Proyecto: 0p1pp1/gst-plugins-bad

static gboolean
gst_ladspa_source_type_query (GstBaseSrc * base, GstQuery * query)
{
  GstLADSPASource *ladspa = GST_LADSPA_SOURCE (base);
  gboolean res = FALSE;

  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);

      if (!gst_audio_info_convert (&ladspa->info, src_fmt, src_val, dest_fmt,
              &dest_val)) {
        GST_DEBUG_OBJECT (ladspa, "query failed");
        return FALSE;
      }

      gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
      res = TRUE;
      break;
    }
    case GST_QUERY_SCHEDULING:
    {
      /* if we can operate in pull mode */
      gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
      gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
      if (ladspa->can_activate_pull)
        gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);

      res = TRUE;
      break;
    }
    default:
      res =
          GST_BASE_SRC_CLASS (gst_ladspa_source_type_parent_class)->query
          (base, query);
      break;
  }

  return res;
}

Ejemplo n.º 4

Archivo: gstaudiotestsrc.c Proyecto: Distrotech/gst-plugins-base

static gboolean
gst_audio_test_src_query (GstBaseSrc * basesrc, GstQuery * query)
{
  GstAudioTestSrc *src = GST_AUDIO_TEST_SRC (basesrc);
  gboolean res = FALSE;

  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);

      if (!gst_audio_info_convert (&src->info, src_fmt, src_val, dest_fmt,
              &dest_val))
        goto error;

      gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
      res = TRUE;
      break;
    }
    case GST_QUERY_SCHEDULING:
    {
      /* if we can operate in pull mode */
      gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
      gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
      if (src->can_activate_pull)
        gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);

      res = TRUE;
      break;
    }
    case GST_QUERY_LATENCY:
    {
      if (src->info.rate > 0) {
        GstClockTime latency;

        latency =
            gst_util_uint64_scale (src->generate_samples_per_buffer, GST_SECOND,
            src->info.rate);
        gst_query_set_latency (query,
            gst_base_src_is_live (GST_BASE_SRC_CAST (src)), latency,
            GST_CLOCK_TIME_NONE);
        GST_DEBUG_OBJECT (src, "Reporting latency of %" GST_TIME_FORMAT,
            GST_TIME_ARGS (latency));
        res = TRUE;
      }
      break;
    }
    default:
      res = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
      break;
  }

  return res;
  /* ERROR */
error:
  {
    GST_DEBUG_OBJECT (src, "query failed");
    return FALSE;
  }
}