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glcolorscale: use glbasefilter vfuncs

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Uses less code \o/
Fixes legacy opengl rendering \o/
This commit is contained in:
Matthew Waters 2015-10-01 23:20:19 +10:00 committed by Tim-Philipp Müller
parent 9117b50cfb
commit e01fc68c02
1 changed files with 43 additions and 85 deletions
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128
ext/gl/gstglcolorscale.c
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@ -70,24 +70,25 @@ static void gst_gl_colorscale_set_property (GObject * object, guint prop_id,
static void gst_gl_colorscale_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_gl_colorscale_gen_gl_resources (GstGLFilter * filter);
static gboolean gst_gl_colorscale_del_gl_resources (GstBaseTransform * trans);
static gboolean gst_gl_colorscale_gl_start (GstGLBaseFilter * base_filter);
static void gst_gl_colorscale_gl_stop (GstGLBaseFilter * base_filter);
static gboolean gst_gl_colorscale_filter_texture (GstGLFilter * filter,
guint in_tex, guint out_tex);
static void gst_gl_colorscale_callback (gint width, gint height,
guint texture, gpointer stuff);
static void
gst_gl_colorscale_class_init (GstGLColorscaleClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseTransformClass *basetransform_class;
GstGLBaseFilterClass *base_filter_class;
GstGLFilterClass *filter_class;
GstBaseTransformClass *basetransform_class = GST_BASE_TRANSFORM_CLASS (klass);
gobject_class = (GObjectClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
basetransform_class = GST_BASE_TRANSFORM_CLASS (klass);
base_filter_class = GST_GL_BASE_FILTER_CLASS (klass);
filter_class = GST_GL_FILTER_CLASS (klass);
gobject_class->set_property = gst_gl_colorscale_set_property;
@ -95,24 +96,22 @@ gst_gl_colorscale_class_init (GstGLColorscaleClass * klass)
gst_element_class_set_metadata (element_class, "OpenGL color scale",
"Filter/Effect/Video", "Colorspace converter and video scaler",
"Julien Isorce <julien.isorce@gmail.com>");
"Julien Isorce <julien.isorce@gmail.com>\n"
"Matthew Waters <matthew@centricular.com>");
filter_class->init_fbo =
GST_DEBUG_FUNCPTR (gst_gl_colorscale_gen_gl_resources);
basetransform_class->passthrough_on_same_caps = TRUE;
base_filter_class->gl_start = GST_DEBUG_FUNCPTR (gst_gl_colorscale_gl_start);
base_filter_class->gl_stop = GST_DEBUG_FUNCPTR (gst_gl_colorscale_gl_stop);
base_filter_class->supported_gl_api =
GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2;
filter_class->filter_texture = gst_gl_colorscale_filter_texture;
basetransform_class->stop =
GST_DEBUG_FUNCPTR (gst_gl_colorscale_del_gl_resources);
basetransform_class->passthrough_on_same_caps = TRUE;
GST_GL_BASE_FILTER_CLASS (klass)->supported_gl_api =
GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2;
}
static void
gst_gl_colorscale_init (GstGLColorscale * colorscale)
{
colorscale->shader = NULL;
}
static void
@ -137,93 +136,52 @@ gst_gl_colorscale_get_property (GObject * object, guint prop_id,
}
}
static void
_compile_identity_shader (GstGLContext * context, GstGLColorscale * colorscale)
static gboolean
gst_gl_colorscale_gl_start (GstGLBaseFilter * base_filter)
{
GstGLFilter *filter = GST_GL_FILTER (colorscale);
GstGLColorscale *colorscale = GST_GL_COLORSCALE (base_filter);
GstGLFilter *filter = GST_GL_FILTER (base_filter);
GstGLShader *shader;
colorscale->shader = gst_gl_shader_new (context);
shader = gst_gl_shader_new (base_filter->context);
if (!gst_gl_shader_compile_with_default_vf_and_check (colorscale->shader,
if (!gst_gl_shader_compile_with_default_vf_and_check (shader,
&filter->draw_attr_position_loc, &filter->draw_attr_texture_loc)) {
gst_gl_context_clear_shader (context);
gst_gl_context_clear_shader (base_filter->context);
gst_object_unref (shader);
GST_ERROR_OBJECT (colorscale, "Failed to initialize identity shader");
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, ("%s",
"Failed to initialize identity shader"), (NULL));
return FALSE;
}
colorscale->shader = shader;
return GST_GL_BASE_FILTER_CLASS (parent_class)->gl_start (base_filter);
}
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;
}
}
static gboolean
gst_gl_colorscale_gen_gl_resources (GstGLFilter * filter)
{
GstGLColorscale *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_context_thread_add (GST_GL_BASE_FILTER (filter)->context,
(GstGLContextThreadFunc) _compile_identity_shader, colorscale);
if (!colorscale->shader) {
gst_gl_context_set_error (GST_GL_BASE_FILTER (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_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);
return GST_GL_BASE_FILTER_CLASS (parent_class)->gl_stop (base_filter);
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
GstGLColorscale *colorscale = GST_GL_COLORSCALE (filter);
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))
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context))
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 void
gst_gl_colorscale_callback (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
#if GST_GL_HAVE_OPENGL
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
GST_GL_API_OPENGL) {
const GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
}
#endif
gst_gl_filter_draw_texture (filter, texture, width, height);
}