C++ (Cpp) GST_VIDEO_CONVERT_CAST примеры использования

Пример #1

Файл: gstvideoconvert.c Проект: chihyoung/gst-plugins-base

static gboolean
gst_video_convert_set_info (GstVideoFilter * filter,
    GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
    GstVideoInfo * out_info)
{
  GstVideoConvert *space;

  space = GST_VIDEO_CONVERT_CAST (filter);

  if (space->convert) {
    gst_video_converter_free (space->convert);
    space->convert = NULL;
  }

  /* these must match */
  if (in_info->width != out_info->width || in_info->height != out_info->height
      || in_info->fps_n != out_info->fps_n || in_info->fps_d != out_info->fps_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->par_n != out_info->par_n || in_info->par_d != out_info->par_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->interlace_mode != out_info->interlace_mode)
    goto format_mismatch;


  space->convert = gst_video_converter_new (in_info, out_info,
      gst_structure_new ("GstVideoConvertConfig",
          GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, GST_TYPE_VIDEO_DITHER_METHOD,
          space->dither,
          GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION, G_TYPE_UINT,
          space->dither_quantization, NULL));
  if (space->convert == NULL)
    goto no_convert;

  GST_DEBUG ("reconfigured %d %d", GST_VIDEO_INFO_FORMAT (in_info),
      GST_VIDEO_INFO_FORMAT (out_info));

  return TRUE;

  /* ERRORS */
format_mismatch:
  {
    GST_ERROR_OBJECT (space, "input and output formats do not match");
    return FALSE;
  }
no_convert:
  {
    GST_ERROR_OBJECT (space, "could not create converter");
    return FALSE;
  }
}

Пример #2

Файл: gstvideoconvert.c Проект: rawoul/gst-plugins-base

static gboolean
gst_video_convert_set_info (GstVideoFilter * filter,
    GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
    GstVideoInfo * out_info)
{
  GstVideoConvert *space;

  space = GST_VIDEO_CONVERT_CAST (filter);

  if (space->convert) {
    videoconvert_convert_free (space->convert);
  }

  /* these must match */
  if (in_info->width != out_info->width || in_info->height != out_info->height
      || in_info->fps_n != out_info->fps_n || in_info->fps_d != out_info->fps_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->par_n != out_info->par_n || in_info->par_d != out_info->par_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->interlace_mode != out_info->interlace_mode)
    goto format_mismatch;

  space->convert = videoconvert_convert_new (in_info, out_info);
  if (space->convert == NULL)
    goto no_convert;

  GST_DEBUG ("reconfigured %d %d", GST_VIDEO_INFO_FORMAT (in_info),
      GST_VIDEO_INFO_FORMAT (out_info));

  return TRUE;

  /* ERRORS */
format_mismatch:
  {
    GST_ERROR_OBJECT (space, "input and output formats do not match");
    return FALSE;
  }
no_convert:
  {
    GST_ERROR_OBJECT (space, "could not create converter");
    return FALSE;
  }
}

Пример #3

Файл: gstvideoconvert.c Проект: chihyoung/gst-plugins-base

static GstFlowReturn
gst_video_convert_transform_frame (GstVideoFilter * filter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
  GstVideoConvert *space;

  space = GST_VIDEO_CONVERT_CAST (filter);

  GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, filter,
      "doing colorspace conversion from %s -> to %s",
      GST_VIDEO_INFO_NAME (&filter->in_info),
      GST_VIDEO_INFO_NAME (&filter->out_info));

  gst_video_converter_frame (space->convert, in_frame, out_frame);

  return GST_FLOW_OK;
}

Пример #4

Файл: gstvideoconvert.c Проект: thaytan/gst-plugins-base

static gboolean
gst_video_convert_set_info (GstVideoFilter * filter,
    GstCaps * incaps, GstVideoInfo * in_info, GstCaps * outcaps,
    GstVideoInfo * out_info)
{
  GstVideoConvert *space;

  space = GST_VIDEO_CONVERT_CAST (filter);

  if (space->convert) {
    gst_video_converter_free (space->convert);
    space->convert = NULL;
  }

  /* these must match */
  if (in_info->width != out_info->width || in_info->height != out_info->height
      || in_info->fps_n != out_info->fps_n || in_info->fps_d != out_info->fps_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->par_n != out_info->par_n || in_info->par_d != out_info->par_d)
    goto format_mismatch;

  /* if present, these must match too */
  if (in_info->interlace_mode != out_info->interlace_mode)
    goto format_mismatch;


  space->convert = gst_video_converter_new (in_info, out_info,
      gst_structure_new ("GstVideoConvertConfig",
          GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, GST_TYPE_VIDEO_DITHER_METHOD,
          space->dither,
          GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION, G_TYPE_UINT,
          space->dither_quantization,
          GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD,
          GST_TYPE_VIDEO_RESAMPLER_METHOD, space->chroma_resampler,
          GST_VIDEO_CONVERTER_OPT_ALPHA_MODE,
          GST_TYPE_VIDEO_ALPHA_MODE, space->alpha_mode,
          GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE,
          G_TYPE_DOUBLE, space->alpha_value,
          GST_VIDEO_CONVERTER_OPT_CHROMA_MODE,
          GST_TYPE_VIDEO_CHROMA_MODE, space->chroma_mode,
          GST_VIDEO_CONVERTER_OPT_MATRIX_MODE,
          GST_TYPE_VIDEO_MATRIX_MODE, space->matrix_mode,
          GST_VIDEO_CONVERTER_OPT_GAMMA_MODE,
          GST_TYPE_VIDEO_GAMMA_MODE, space->gamma_mode,
          GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE,
          GST_TYPE_VIDEO_PRIMARIES_MODE, space->primaries_mode,
          GST_VIDEO_CONVERTER_OPT_THREADS, G_TYPE_UINT,
          space->n_threads, NULL));
  if (space->convert == NULL)
    goto no_convert;

  GST_DEBUG ("reconfigured %d %d", GST_VIDEO_INFO_FORMAT (in_info),
      GST_VIDEO_INFO_FORMAT (out_info));

  return TRUE;

  /* ERRORS */
format_mismatch:
  {
    GST_ERROR_OBJECT (space, "input and output formats do not match");
    return FALSE;
  }
no_convert:
  {
    GST_ERROR_OBJECT (space, "could not create converter");
    return FALSE;
  }
}