GeglSampler *
gegl_buffer_sampler_new (GeglBuffer *buffer,
const Babl *format,
GeglSamplerType sampler_type)
{
GeglSampler *sampler;
GType desired_type;
if (format == NULL)
format = babl_format ("RaGaBaA float");
desired_type = gegl_sampler_gtype_from_enum (sampler_type);
sampler = g_object_new (desired_type,
"buffer", buffer,
"format", format,
NULL);
gegl_sampler_prepare (sampler);
return sampler;
}
GeglSampler *
gegl_buffer_sampler_new_at_level (GeglBuffer *buffer,
const Babl *format,
GeglSamplerType sampler_type,
gint level)
{
GeglSampler *sampler;
GType desired_type;
if (format == NULL)
format = gegl_babl_rgbA_linear_float ();
desired_type = gegl_sampler_gtype_from_enum (sampler_type);
sampler = g_object_new (desired_type,
"buffer", buffer,
"format", format,
"level", level,
NULL);
gegl_sampler_prepare (sampler);
return sampler;
}
void
gegl_buffer_sample_at_level (GeglBuffer *buffer,
gdouble x,
gdouble y,
GeglMatrix2 *scale,
gpointer dest,
const Babl *format,
gint level,
GeglSamplerType sampler_type,
GeglAbyssPolicy repeat_mode)
{
/*
if (sampler_type == GEGL_SAMPLER_NEAREST && format == buffer->soft_format)
{
GeglRectangle rect = {floorf (x), floorf(y), 1, 1};
gegl_buffer_get (buffer, &rect, 1, NULL, dest, GEGL_AUTO_ROWSTRIDE, repeat_mode);
return;
}*/
if (!format)
format = buffer->soft_format;
if (gegl_cl_is_accelerated ())
{
GeglRectangle rect = {floorf (x), floorf(y), 1, 1};
gegl_buffer_cl_cache_flush (buffer, &rect);
}
/* unset the cached sampler if it dosn't match the needs */
if (buffer->sampler == NULL ||
(buffer->sampler != NULL &&
(buffer->sampler_type != sampler_type || buffer->sampler_format != format)))
{
gboolean threaded = gegl_config_threads () > 1;
GType desired_type = gegl_sampler_gtype_from_enum (sampler_type);
if (threaded)
g_mutex_lock (&gegl_buffer_sampler_mutex);
if (buffer->sampler)
{
g_object_unref (buffer->sampler);
buffer->sampler = NULL;
buffer->sampler_type = 0;
}
buffer->sampler_type = sampler_type;
buffer->sampler = g_object_new (desired_type,
"buffer", buffer,
"format", format,
"level", level,
NULL);
buffer->sampler_format = format;
gegl_sampler_prepare (buffer->sampler);
if (threaded)
g_mutex_unlock (&gegl_buffer_sampler_mutex);
}
buffer->sampler->get(buffer->sampler, x, y, scale, dest, repeat_mode);
}
