Esempi in C++ (Cpp) per gegl_gio_open_output_stream

Esempio n. 1

File: npy-save.c Progetto: jonnor/gegl

static gboolean
process (GeglOperation       *operation,
         GeglBuffer          *input,
         const GeglRectangle *result,
         gint                 level)
{
  GeglProperties *o = GEGL_PROPERTIES (operation);
  GOutputStream *stream;
  GFile *file = NULL;
  GError *error = NULL;
  gboolean status = TRUE;

  stream = gegl_gio_open_output_stream (NULL, o->path, &file, &error);
  if (stream == NULL)
    {
      status = FALSE;
      g_warning ("%s", error->message);
      goto cleanup;
    }

  if (!export_numpy (operation, input, result, stream))
    {
      status = FALSE;
      g_warning ("could not export NumPy file");
      goto cleanup;
    }

cleanup:
  g_clear_object (&stream);
  g_clear_object (&file);
  return status;
}

Esempio n. 2

File: tiff-save.c Progetto: kleopatra999/gegl

static gboolean
process(GeglOperation *operation,
        GeglBuffer *input,
        const GeglRectangle *result,
        int level)
{
  GeglProperties *o = GEGL_PROPERTIES(operation);
  Priv *p = g_new0(Priv, 1);
  gboolean status = TRUE;
  GError *error = NULL;

  g_assert(p != NULL);

  o->user_data = (void*) p;

  p->stream = gegl_gio_open_output_stream(NULL, o->path, &p->file, &error);
  if (p->stream != NULL && p->file != NULL)
    p->can_seek = g_seekable_can_seek(G_SEEKABLE(p->stream));
  if (p->stream == NULL)
    {
      status = FALSE;
      g_warning("%s", error->message);
      goto cleanup;
    }

  TIFFSetErrorHandler(error_handler);
  TIFFSetWarningHandler(warning_handler);

  p->tiff = TIFFClientOpen("GEGL-tiff-save", "w", (thandle_t) p,
                           read_from_stream, write_to_stream,
                           seek_in_stream, close_stream,
                           get_file_size, NULL, NULL);
  if (p->tiff == NULL)
    {
      status = FALSE;
      g_warning("failed to open TIFF from %s", o->path);
      goto cleanup;
    }

  if (export_tiff(operation, input, result))
    {
      status = FALSE;
      g_warning("could not export TIFF file");
      goto cleanup;
    }

cleanup:
  cleanup(operation);
  if (o->user_data != NULL)
    g_free(o->user_data);
  o->user_data = NULL;

  if (error != NULL)
    g_error_free(error);

  return status;
}

Esempio n. 3

File: png-save.c Progetto: jonnor/gegl

static gboolean
process (GeglOperation       *operation,
         GeglBuffer          *input,
         const GeglRectangle *result,
         gint                 level)
{
  GeglProperties *o = GEGL_PROPERTIES (operation);
  png_structp png = NULL;
  png_infop info = NULL;
  GOutputStream *stream = NULL;
  GFile *file = NULL;
  gboolean status = TRUE;
  GError *error = NULL;

  png = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, error_fn, NULL);
  if (png != NULL)
    info = png_create_info_struct (png);
  if (png == NULL || info == NULL)
    {
      status = FALSE;
      g_warning ("failed to initialize PNG writer");
      goto cleanup;
    }

  stream = gegl_gio_open_output_stream (NULL, o->path, &file, &error);
  if (stream == NULL)
    {
      status = FALSE;
      g_warning ("%s", error->message);
      goto cleanup;
    }

  png_set_write_fn (png, stream, write_fn, flush_fn);

  if (export_png (operation, input, result, png, info, o->compression, o->bitdepth))
    {
      status = FALSE;
      g_warning("could not export PNG file");
      goto cleanup;
    }

cleanup:
  if (info != NULL)
    png_destroy_write_struct (&png, &info);
  else if (png != NULL)
    png_destroy_write_struct (&png, NULL);

  if (stream != NULL)
    g_clear_object(&stream);

  if (file != NULL)
    g_clear_object(&file);

  return status;
}