C++ (Cpp) GST_AUDIO_FORMAT_INFO_IS_SIGNED Examples

Example #1

File: audio-format.c Project: hyperlobic/gst-plugins-base

/**
 * gst_audio_format_build_integer:
 * @sign: signed or unsigned format
 * @endianness: G_LITTLE_ENDIAN or G_BIG_ENDIAN
 * @width: amount of bits used per sample
 * @depth: amount of used bits in @width
 *
 * Construct a #GstAudioFormat with given parameters.
 *
 * Returns: a #GstAudioFormat or GST_AUDIO_FORMAT_UNKNOWN when no audio format
 * exists with the given parameters.
 */
GstAudioFormat
gst_audio_format_build_integer (gboolean sign, gint endianness,
    gint width, gint depth)
{
  gint i, e;

  for (i = 0; i < G_N_ELEMENTS (formats); i++) {
    GstAudioFormatInfo *finfo = &formats[i];

    /* must be int */
    if (!GST_AUDIO_FORMAT_INFO_IS_INTEGER (finfo))
      continue;

    /* width and depth must match */
    if (width != GST_AUDIO_FORMAT_INFO_WIDTH (finfo))
      continue;
    if (depth != GST_AUDIO_FORMAT_INFO_DEPTH (finfo))
      continue;

    /* if there is endianness, it must match */
    e = GST_AUDIO_FORMAT_INFO_ENDIANNESS (finfo);
    if (e && e != endianness)
      continue;

    /* check sign */
    if ((sign && !GST_AUDIO_FORMAT_INFO_IS_SIGNED (finfo)) ||
        (!sign && GST_AUDIO_FORMAT_INFO_IS_SIGNED (finfo)))
      continue;

    return GST_AUDIO_FORMAT_INFO_FORMAT (finfo);
  }
  return GST_AUDIO_FORMAT_UNKNOWN;
}

Example #2

File: audioconvert.c Project: PeterXu/gst-mobile

static gint
audio_convert_get_func_index (AudioConvertCtx * ctx,
    const GstAudioFormatInfo * fmt)
{
  gint index = 0;

  if (GST_AUDIO_FORMAT_INFO_IS_INTEGER (fmt)) {
    index += (GST_AUDIO_FORMAT_INFO_WIDTH (fmt) / 8 - 1) * 4;
    index += GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN (fmt) ? 0 : 2;
    index += GST_AUDIO_FORMAT_INFO_IS_SIGNED (fmt) ? 1 : 0;
    index += (ctx->ns == NOISE_SHAPING_NONE) ? 0 : 24;
  } else {
    /* this is float/double */
    index = 16;
    index += (GST_AUDIO_FORMAT_INFO_WIDTH (fmt) == 32) ? 0 : 2;
    index += GST_AUDIO_FORMAT_INFO_IS_LITTLE_ENDIAN (fmt) ? 0 : 1;
    index += (DOUBLE_INTERMEDIATE_FORMAT (ctx)) ? 4 : 0;
  }

  return index;
}