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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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gleffects: Create element for each effect
https://bugzilla.gnome.org/show_bug.cgi?id=746209
This commit is contained in:
Michał Dębski
Tim-Philipp Müller
parent
afdc3c8ee3
commit
7ec1246730
3 changed files with 188 additions and 54 deletions
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@ -39,16 +39,17 @@
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#include <gst/gl/gstglconfig.h>
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#include "gstgleffects.h"
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#define GST_TYPE_GL_EFFECTS (gst_gl_effects_get_type())
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#define GST_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_EFFECTS,GstGLEffects))
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#define GST_IS_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_EFFECTS))
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#define GST_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
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#define GST_IS_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , GST_TYPE_GL_EFFECTS))
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#define GST_GL_EFFECTS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
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#define GST_CAT_DEFAULT gst_gl_effects_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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enum
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{
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PROP_0 = 0x0,
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PROP_EFFECT = 0x1 << 1,
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PROP_HSWAP = 0x1 << 2,
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PROP_INVERT = 0x1 << 3
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};
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (gst_gl_effects_debug, "gleffects", 0, "gleffects element");
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@ -70,6 +71,8 @@ static void gst_gl_effects_ghash_func_clean (gpointer key, gpointer value,
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static gboolean gst_gl_effects_filter_texture (GstGLFilter * filter,
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guint in_tex, guint out_tex);
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static gboolean gst_gl_effects_filters_is_property_supported (const
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GstGLEffectsFilterDescriptor *, gint property);
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/* dont' forget to edit the following when a new effect is added */
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typedef enum
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@ -96,11 +99,9 @@ typedef enum
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GST_GL_N_EFFECTS
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} GstGLEffectsEffect;
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#define GST_TYPE_GL_EFFECTS_EFFECT (gst_gl_effects_effect_get_type ())
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static GType
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gst_gl_effects_effect_get_type (void)
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static const GEnumValue *
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gst_gl_effects_get_effects (void)
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{
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static GType gl_effects_effect_type = 0;
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static const GEnumValue effect_types[] = {
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{GST_GL_EFFECT_IDENTITY, "Do nothing Effect", "identity"},
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{GST_GL_EFFECT_MIRROR, "Mirror Effect", "mirror"},
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@ -123,10 +124,18 @@ gst_gl_effects_effect_get_type (void)
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{GST_GL_EFFECT_LAPLACIAN, "Laplacian Convolution Demo Effect", "laplacian"},
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{0, NULL, NULL}
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};
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return effect_types;
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}
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#define GST_TYPE_GL_EFFECTS_EFFECT (gst_gl_effects_effect_get_type ())
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static GType
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gst_gl_effects_effect_get_type (void)
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{
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static GType gl_effects_effect_type = 0;
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if (!gl_effects_effect_type) {
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gl_effects_effect_type =
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g_enum_register_static ("GstGLEffectsEffect", effect_types);
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g_enum_register_static ("GstGLEffectsEffect",
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gst_gl_effects_get_effects ());
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}
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return gl_effects_effect_type;
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}
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@ -307,14 +316,7 @@ gst_gl_effects_reset_gl_resources (GstGLFilter * filter)
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static void
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gst_gl_effects_class_init (GstGLEffectsClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *element_class;
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gobject_class = (GObjectClass *) klass;
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element_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_gl_effects_set_property;
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gobject_class->get_property = gst_gl_effects_get_property;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GST_GL_FILTER_CLASS (klass)->filter_texture = gst_gl_effects_filter_texture;
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GST_GL_FILTER_CLASS (klass)->display_init_cb =
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@ -325,26 +327,7 @@ gst_gl_effects_class_init (GstGLEffectsClass * klass)
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GST_GL_FILTER_CLASS (klass)->onStop = gst_gl_effects_reset_resources;
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GST_GL_FILTER_CLASS (klass)->onInitFBO = gst_gl_effects_on_init_gl_context;
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g_object_class_install_property (gobject_class,
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PROP_EFFECT,
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g_param_spec_enum ("effect",
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"Effect",
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"Select which effect apply to GL video texture",
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GST_TYPE_GL_EFFECTS_EFFECT,
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GST_GL_EFFECT_IDENTITY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_HSWAP,
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g_param_spec_boolean ("hswap",
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"Horizontal Swap",
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"Switch video texture left to right, useful with webcams",
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FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/* FIXME: make it work on every effect */
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g_object_class_install_property (gobject_class,
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PROP_INVERT,
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g_param_spec_boolean ("invert",
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"Invert the colours for sobel and laplacian effect",
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"Invert colors to get dark edges on bright background when using sobel effect",
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FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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klass->filter_descriptor = NULL;
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gst_element_class_set_metadata (element_class,
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"Gstreamer OpenGL Effects", "Filter/Effect/Video",
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@ -355,6 +338,46 @@ gst_gl_effects_class_init (GstGLEffectsClass * klass)
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GST_GL_API_OPENGL | GST_GL_API_GLES2 | GST_GL_API_OPENGL3;
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}
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static void
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gst_gl_effects_filter_class_init (GstGLEffectsClass * klass,
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const GstGLEffectsFilterDescriptor * filter_descriptor)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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klass->filter_descriptor = filter_descriptor;
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gobject_class->set_property = gst_gl_effects_set_property;
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gobject_class->get_property = gst_gl_effects_get_property;
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/* if filterDescriptor is null it's a generic gleffects */
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if (!filter_descriptor) {
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g_object_class_install_property (gobject_class,
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PROP_EFFECT,
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g_param_spec_enum ("effect",
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"Effect",
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"Select which effect apply to GL video texture",
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GST_TYPE_GL_EFFECTS_EFFECT,
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GST_GL_EFFECT_IDENTITY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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g_object_class_install_property (gobject_class,
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PROP_HSWAP,
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g_param_spec_boolean ("hswap",
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"Horizontal Swap",
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"Switch video texture left to right, useful with webcams",
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FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/* FIXME: make it work on every effect */
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if (gst_gl_effects_filters_is_property_supported (filter_descriptor,
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PROP_INVERT)) {
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g_object_class_install_property (gobject_class, PROP_INVERT,
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g_param_spec_boolean ("invert", "Invert the colors for sobel effect",
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"Invert colors to get dark edges on bright background when using sobel effect",
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FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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}
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static void
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set_horizontal_swap (GstGLContext * context, gpointer data)
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{
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@ -376,9 +399,16 @@ set_horizontal_swap (GstGLContext * context, gpointer data)
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static void
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gst_gl_effects_init (GstGLEffects * effects)
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{
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effects->effect = gst_gl_effects_identity;
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effects->horizontal_swap = FALSE;
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effects->invert = FALSE;
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effects->effect = gst_gl_effects_identity;
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}
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static void
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gst_gl_effects_filter_init (GstGLEffects * effects)
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{
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gst_gl_effects_set_effect (effects,
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GST_GL_EFFECTS_GET_CLASS (effects)->filter_descriptor->effect);
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}
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static void
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@ -533,3 +563,109 @@ gst_gl_effects_get_fragment_shader (GstGLEffects * effects,
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return shader;
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}
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static const GstGLEffectsFilterDescriptor *
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gst_gl_effects_filters_supported_properties (void)
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{
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/* Horizontal swap property is supported by all filters */
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static const GstGLEffectsFilterDescriptor effects[] = {
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{GST_GL_EFFECT_SOBEL, PROP_INVERT, NULL},
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{GST_GL_EFFECT_LAPLACIAN, PROP_INVERT, NULL},
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{0, 0, NULL}
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};
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return effects;
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}
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static inline gboolean
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gst_gl_effects_filters_is_property_supported (const GstGLEffectsFilterDescriptor
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* descriptor, gint property)
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{
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/* generic filter (NULL descriptor) supports all properties */
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return !descriptor || (descriptor->supported_properties & property);
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}
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static const GstGLEffectsFilterDescriptor *
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gst_gl_effects_filters_descriptors (void)
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{
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static GstGLEffectsFilterDescriptor *descriptors = NULL;
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if (!descriptors) {
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const GEnumValue *effect = gst_gl_effects_get_effects ();
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guint n_filters = 0;
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for (const GEnumValue * e = effect; NULL != e->value_nick; ++e, ++n_filters) {
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}
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descriptors = g_new0 (GstGLEffectsFilterDescriptor, n_filters + 1);
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for (guint i = 0; i < n_filters; ++i, ++effect) {
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descriptors[i].effect = effect->value;
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descriptors[i].filter_name = effect->value_nick;
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}
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for (const GstGLEffectsFilterDescriptor * defined =
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gst_gl_effects_filters_supported_properties ();
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0 != defined->supported_properties; ++defined) {
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guint i = 0;
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for (; i < n_filters; ++i) {
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if (descriptors[i].effect == defined->effect) {
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descriptors[i].supported_properties = defined->supported_properties;
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break;
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}
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}
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if (i >= n_filters) {
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GST_WARNING ("Could not match gstgleffects-%s descriptor",
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defined->filter_name);
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}
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}
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}
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return descriptors;
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}
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gboolean
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gst_gl_effects_register_filters (GstPlugin * plugin, GstRank rank)
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{
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static volatile gsize registered = 0;
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if (g_once_init_enter (®istered)) {
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GTypeInfo info = {
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sizeof (GstGLEffectsClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_gl_effects_filter_class_init,
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NULL,
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NULL,
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sizeof (GstGLEffects),
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0,
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NULL
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};
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GType generic_type =
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g_type_register_static (GST_TYPE_GL_EFFECTS, "GstGLEffectsGeneric",
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&info, 0);
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if (gst_element_register (plugin, "gleffects", rank, generic_type)) {
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for (const GstGLEffectsFilterDescriptor * filters =
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gst_gl_effects_filters_descriptors (); NULL != filters->filter_name;
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++filters) {
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gchar *name = g_strdup_printf ("gleffects_%s", filters->filter_name);
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GTypeInfo info = {
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sizeof (GstGLEffectsClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_gl_effects_filter_class_init,
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NULL,
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filters,
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sizeof (GstGLEffects),
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0,
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(GInstanceInitFunc) gst_gl_effects_filter_init
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};
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GType type =
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g_type_register_static (GST_TYPE_GL_EFFECTS, name, &info, 0);
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if (!gst_element_register (plugin, name, rank, type)) {
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GST_WARNING ("Could not register %s", name);
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}
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g_free (name);
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}
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}
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g_once_init_leave (®istered, generic_type);
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}
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return registered;
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}
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@ -26,7 +26,6 @@
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G_BEGIN_DECLS
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#define GST_TYPE_GL_EFFECTS (gst_gl_effects_get_type())
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#define GST_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_EFFECTS,GstGLEffects))
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#define GST_IS_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_EFFECTS))
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@ -43,6 +42,12 @@ G_BEGIN_DECLS
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typedef struct _GstGLEffects GstGLEffects;
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typedef struct _GstGLEffectsClass GstGLEffectsClass;
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typedef struct {
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gint effect;
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guint supported_properties;
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const gchar *filter_name;
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} GstGLEffectsFilterDescriptor;
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typedef void (* GstGLEffectProcessFunc) (GstGLEffects *effects);
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#define NEEDED_TEXTURES 5
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@ -78,18 +83,11 @@ struct _GstGLEffects
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struct _GstGLEffectsClass
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{
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GstGLFilterClass filter_class;
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const GstGLEffectsFilterDescriptor *filter_descriptor;
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};
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enum
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{
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PROP_0,
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PROP_EFFECT,
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PROP_HSWAP,
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PROP_INVERT
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};
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GType gst_gl_effects_get_type (void);
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gboolean gst_gl_effects_register_filters (GstPlugin *, GstRank);
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GstGLShader* gst_gl_effects_get_fragment_shader (GstGLEffects *effects,
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const gchar * shader_name, const gchar * shader_source_gles2, const gchar * shader_source_opengl);
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@ -161,10 +161,10 @@ plugin_init (GstPlugin * plugin)
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return FALSE;
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}
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#endif
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if (!gst_element_register (plugin, "gleffects",
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GST_RANK_NONE, gst_gl_effects_get_type ())) {
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if (!gst_gl_effects_register_filters (plugin, GST_RANK_NONE)) {
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return FALSE;
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}
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};
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if (!gst_element_register (plugin, "glcolorscale",
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GST_RANK_NONE, GST_TYPE_GL_COLORSCALE)) {
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