static void
gst_gl_colorscale_del_gl_resources (GstGLFilter * filter)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (filter);
if (colorscale->shader) {
gst_gl_context_del_shader (filter->context, colorscale->shader);
colorscale->shader = NULL;
}
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
GstGLMemory * out_tex)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (filter);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context))
gst_gl_filter_render_to_target_with_shader (filter, in_tex, out_tex,
colorscale->shader);
return TRUE;
}
static void
gst_gl_colorscale_gl_stop (GstGLBaseFilter * base_filter)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (base_filter);
if (colorscale->shader) {
gst_object_unref (colorscale->shader);
colorscale->shader = NULL;
}
return GST_GL_BASE_FILTER_CLASS (parent_class)->gl_stop (base_filter);
}
static gboolean
gst_gl_colorscale_del_gl_resources (GstBaseTransform * trans)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (trans);
if (colorscale->shader) {
gst_gl_context_del_shader (GST_GL_BASE_FILTER (trans)->context,
colorscale->shader);
colorscale->shader = NULL;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans);
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
colorscale = GST_GL_COLORSCALE (filter);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
(GST_GL_API_GLES2 | GST_GL_API_OPENGL3))
gst_gl_filter_render_to_target_with_shader (filter, TRUE, in_tex, out_tex,
colorscale->shader);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
GST_GL_API_OPENGL)
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_colorscale_callback, colorscale);
return TRUE;
}
static gboolean
gst_gl_colorscale_gen_gl_resources (GstGLFilter * filter)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (filter);
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_GLES2) {
gst_gl_context_thread_add (filter->context,
(GstGLContextThreadFunc) _compile_identity_shader, colorscale);
if (!colorscale->shader) {
gst_gl_context_set_error (filter->context,
"Failed to initialize identity shader");
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, ("%s",
gst_gl_context_get_error ()), (NULL));
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
colorscale = GST_GL_COLORSCALE (filter);
#if GST_GL_HAVE_GLES2
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_GLES2)
gst_gl_filter_render_to_target_with_shader (filter, TRUE, in_tex, out_tex,
colorscale->shader);
#endif
#if GST_GL_HAVE_OPENGL
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_OPENGL)
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_colorscale_callback, colorscale);
#endif
return TRUE;
}
static gboolean
gst_gl_colorscale_gl_start (GstGLBaseFilter * base_filter)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (base_filter);
GstGLFilter *filter = GST_GL_FILTER (base_filter);
GstGLShader *shader;
GError *error = NULL;
if (!(shader = gst_gl_shader_new_default (base_filter->context, &error))) {
GST_ERROR_OBJECT (colorscale, "Failed to initialize shader: %s",
error->message);
gst_object_unref (shader);
return FALSE;
}
filter->draw_attr_position_loc =
gst_gl_shader_get_attribute_location (shader, "a_position");
filter->draw_attr_texture_loc =
gst_gl_shader_get_attribute_location (shader, "a_texcoord");
colorscale->shader = shader;
return GST_GL_BASE_FILTER_CLASS (parent_class)->gl_start (base_filter);
}
