| /* |
| * GStreamer |
| * Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:element-gleffects. |
| * |
| * GL Shading Language effects. |
| * |
| * <refsect2> |
| * <title>Examples</title> |
| * |[ |
| * gst-launch-1.0 videotestsrc ! glupload ! gleffects effect=5 ! glimagesink |
| * ]| |
| * FBO (Frame Buffer Object) and GLSL (OpenGL Shading Language) are required. |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <gst/gl/gstglconfig.h> |
| #include "gstgleffects.h" |
| |
| #define GST_CAT_DEFAULT gst_gl_effects_debug |
| GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); |
| |
| enum |
| { |
| PROP_0 = 0x0, |
| PROP_EFFECT = 0x1 << 1, |
| PROP_HSWAP = 0x1 << 2, |
| PROP_INVERT = 0x1 << 3 |
| }; |
| |
| #define DEBUG_INIT \ |
| GST_DEBUG_CATEGORY_INIT (gst_gl_effects_debug, "gleffects", 0, "gleffects element"); |
| |
| #define gst_gl_effects_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstGLEffects, gst_gl_effects, GST_TYPE_GL_FILTER, |
| DEBUG_INIT); |
| |
| static void gst_gl_effects_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_gl_effects_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static gboolean gst_gl_effects_init_resources (GstBaseTransform * trans); |
| static gboolean gst_gl_effects_reset_resources (GstBaseTransform * trans); |
| |
| static gboolean gst_gl_effects_on_init_gl_context (GstGLFilter * filter); |
| |
| static void gst_gl_effects_ghash_func_clean (gpointer key, gpointer value, |
| gpointer data); |
| |
| static gboolean gst_gl_effects_filter_texture (GstGLFilter * filter, |
| GstGLMemory * in_tex, GstGLMemory * out_tex); |
| static gboolean gst_gl_effects_filters_is_property_supported (const |
| GstGLEffectsFilterDescriptor *, gint property); |
| |
| /* dont' forget to edit the following when a new effect is added */ |
| typedef enum |
| { |
| GST_GL_EFFECT_IDENTITY, |
| GST_GL_EFFECT_MIRROR, |
| GST_GL_EFFECT_SQUEEZE, |
| GST_GL_EFFECT_STRETCH, |
| GST_GL_EFFECT_TUNNEL, |
| GST_GL_EFFECT_FISHEYE, |
| GST_GL_EFFECT_TWIRL, |
| GST_GL_EFFECT_BULGE, |
| GST_GL_EFFECT_SQUARE, |
| GST_GL_EFFECT_HEAT, |
| GST_GL_EFFECT_SEPIA, |
| GST_GL_EFFECT_XPRO, |
| GST_GL_EFFECT_LUMA_XPRO, |
| GST_GL_EFFECT_XRAY, |
| GST_GL_EFFECT_SIN, |
| GST_GL_EFFECT_GLOW, |
| GST_GL_EFFECT_SOBEL, |
| GST_GL_EFFECT_BLUR, |
| GST_GL_EFFECT_LAPLACIAN, |
| GST_GL_N_EFFECTS |
| } GstGLEffectsEffect; |
| |
| static const GEnumValue * |
| gst_gl_effects_get_effects (void) |
| { |
| static const GEnumValue effect_types[] = { |
| {GST_GL_EFFECT_IDENTITY, "Do nothing Effect", "identity"}, |
| {GST_GL_EFFECT_MIRROR, "Mirror Effect", "mirror"}, |
| {GST_GL_EFFECT_SQUEEZE, "Squeeze Effect", "squeeze"}, |
| {GST_GL_EFFECT_STRETCH, "Stretch Effect", "stretch"}, |
| {GST_GL_EFFECT_TUNNEL, "Light Tunnel Effect", "tunnel"}, |
| {GST_GL_EFFECT_FISHEYE, "FishEye Effect", "fisheye"}, |
| {GST_GL_EFFECT_TWIRL, "Twirl Effect", "twirl"}, |
| {GST_GL_EFFECT_BULGE, "Bulge Effect", "bulge"}, |
| {GST_GL_EFFECT_SQUARE, "Square Effect", "square"}, |
| {GST_GL_EFFECT_HEAT, "Heat Signature Effect", "heat"}, |
| {GST_GL_EFFECT_SEPIA, "Sepia Toning Effect", "sepia"}, |
| {GST_GL_EFFECT_XPRO, "Cross Processing Effect", "xpro"}, |
| {GST_GL_EFFECT_LUMA_XPRO, "Luma Cross Processing Effect", "lumaxpro"}, |
| {GST_GL_EFFECT_XRAY, "Glowing negative effect", "xray"}, |
| {GST_GL_EFFECT_SIN, "All Grey but Red Effect", "sin"}, |
| {GST_GL_EFFECT_GLOW, "Glow Lighting Effect", "glow"}, |
| {GST_GL_EFFECT_SOBEL, "Sobel edge detection Effect", "sobel"}, |
| {GST_GL_EFFECT_BLUR, "Blur with 9x9 separable convolution Effect", "blur"}, |
| {GST_GL_EFFECT_LAPLACIAN, "Laplacian Convolution Demo Effect", "laplacian"}, |
| {0, NULL, NULL} |
| }; |
| return effect_types; |
| } |
| |
| #define GST_TYPE_GL_EFFECTS_EFFECT (gst_gl_effects_effect_get_type ()) |
| static GType |
| gst_gl_effects_effect_get_type (void) |
| { |
| static GType gl_effects_effect_type = 0; |
| if (!gl_effects_effect_type) { |
| gl_effects_effect_type = |
| g_enum_register_static ("GstGLEffectsEffect", |
| gst_gl_effects_get_effects ()); |
| } |
| return gl_effects_effect_type; |
| } |
| |
| static void |
| gst_gl_effects_set_effect (GstGLEffects * effects, gint effect_type) |
| { |
| GstGLBaseFilterClass *filter_class = GST_GL_BASE_FILTER_GET_CLASS (effects); |
| |
| switch (effect_type) { |
| case GST_GL_EFFECT_IDENTITY: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_identity; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_MIRROR: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_mirror; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_SQUEEZE: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_squeeze; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_STRETCH: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_stretch; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_TUNNEL: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_tunnel; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_FISHEYE: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_fisheye; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_TWIRL: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_twirl; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_BULGE: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_bulge; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_SQUARE: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_square; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_HEAT: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_heat; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_SEPIA: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_sepia; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_XPRO: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_xpro; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_LUMA_XPRO: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_luma_xpro; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_SIN: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_sin; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_XRAY: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_xray; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_GLOW: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_glow; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_SOBEL: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_sobel; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_BLUR: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_blur; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| case GST_GL_EFFECT_LAPLACIAN: |
| effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_laplacian; |
| filter_class->supported_gl_api = |
| GST_GL_API_GLES2 | GST_GL_API_OPENGL | GST_GL_API_OPENGL3; |
| effects->current_effect = effect_type; |
| break; |
| default: |
| g_assert_not_reached (); |
| } |
| |
| effects->current_effect = effect_type; |
| } |
| |
| /* init resources that need a gl context */ |
| static void |
| gst_gl_effects_init_gl_resources (GstGLFilter * filter) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (filter); |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| GstGLBaseMemoryAllocator *base_alloc; |
| GstGLAllocationParams *params; |
| gint i; |
| |
| base_alloc = (GstGLBaseMemoryAllocator *) |
| gst_gl_memory_allocator_get_default (context); |
| params = |
| (GstGLAllocationParams *) gst_gl_video_allocation_params_new (context, |
| NULL, &filter->out_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D, |
| GST_VIDEO_GL_TEXTURE_TYPE_RGBA); |
| |
| for (i = 0; i < NEEDED_TEXTURES; i++) { |
| if (effects->midtexture[i]) |
| gst_memory_unref (GST_MEMORY_CAST (effects->midtexture[i])); |
| |
| effects->midtexture[i] = |
| (GstGLMemory *) gst_gl_base_memory_alloc (base_alloc, params); |
| } |
| |
| gst_object_unref (base_alloc); |
| gst_gl_allocation_params_free (params); |
| } |
| |
| /* free resources that need a gl context */ |
| static void |
| gst_gl_effects_reset_gl_resources (GstGLFilter * filter) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (filter); |
| GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable; |
| gint i = 0; |
| |
| for (i = 0; i < NEEDED_TEXTURES; i++) { |
| gst_memory_unref (GST_MEMORY_CAST (effects->midtexture[i])); |
| } |
| for (i = 0; i < GST_GL_EFFECTS_N_CURVES; i++) { |
| gl->DeleteTextures (1, &effects->curve[i]); |
| effects->curve[i] = 0; |
| } |
| } |
| |
| static void |
| gst_gl_effects_class_init (GstGLEffectsClass * klass) |
| { |
| GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
| |
| GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_effects_init_resources; |
| GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_effects_reset_resources; |
| |
| GST_GL_FILTER_CLASS (klass)->filter_texture = gst_gl_effects_filter_texture; |
| GST_GL_FILTER_CLASS (klass)->display_init_cb = |
| gst_gl_effects_init_gl_resources; |
| GST_GL_FILTER_CLASS (klass)->display_reset_cb = |
| gst_gl_effects_reset_gl_resources; |
| GST_GL_FILTER_CLASS (klass)->init_fbo = gst_gl_effects_on_init_gl_context; |
| |
| klass->filter_descriptor = NULL; |
| |
| gst_element_class_set_metadata (element_class, |
| "Gstreamer OpenGL Effects", "Filter/Effect/Video", |
| "GL Shading Language effects", |
| "Filippo Argiolas <filippo.argiolas@gmail.com>"); |
| |
| GST_GL_BASE_FILTER_CLASS (klass)->supported_gl_api = |
| GST_GL_API_OPENGL | GST_GL_API_GLES2 | GST_GL_API_OPENGL3; |
| } |
| |
| static void |
| gst_gl_effects_filter_class_init (GstGLEffectsClass * klass, |
| const GstGLEffectsFilterDescriptor * filter_descriptor) |
| { |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
| |
| klass->filter_descriptor = filter_descriptor; |
| |
| gobject_class->set_property = gst_gl_effects_set_property; |
| gobject_class->get_property = gst_gl_effects_get_property; |
| |
| /* if filterDescriptor is null it's a generic gleffects */ |
| if (!filter_descriptor) { |
| g_object_class_install_property (gobject_class, |
| PROP_EFFECT, |
| g_param_spec_enum ("effect", |
| "Effect", |
| "Select which effect apply to GL video texture", |
| GST_TYPE_GL_EFFECTS_EFFECT, |
| GST_GL_EFFECT_IDENTITY, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| } else { |
| gchar *description = g_strdup_printf ("GL Shading Language effects - %s", |
| filter_descriptor->filter_longname); |
| |
| gst_element_class_set_metadata (element_class, |
| filter_descriptor->filter_longname, "Filter/Effect/Video", |
| description, "Filippo Argiolas <filippo.argiolas@gmail.com>"); |
| |
| g_free (description); |
| } |
| |
| g_object_class_install_property (gobject_class, |
| PROP_HSWAP, |
| g_param_spec_boolean ("hswap", |
| "Horizontal Swap", |
| "Switch video texture left to right, useful with webcams", |
| FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| /* FIXME: make it work on every effect */ |
| if (gst_gl_effects_filters_is_property_supported (filter_descriptor, |
| PROP_INVERT)) { |
| g_object_class_install_property (gobject_class, PROP_INVERT, |
| g_param_spec_boolean ("invert", "Invert the colors for sobel effect", |
| "Invert colors to get dark edges on bright background when using sobel effect", |
| FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| } |
| } |
| |
| static void |
| set_horizontal_swap (GstGLEffects * effects) |
| { |
| #if GST_GL_HAVE_OPENGL |
| GstGLContext *context = GST_GL_BASE_FILTER (effects)->context; |
| const GstGLFuncs *gl = context->gl_vtable; |
| |
| if (gst_gl_context_get_gl_api (context) & GST_GL_API_OPENGL) { |
| const gfloat mirrormatrix[16] = { |
| -1.0, 0.0, 0.0, 0.0, |
| 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0 |
| }; |
| |
| gl->MatrixMode (GL_MODELVIEW); |
| gl->LoadMatrixf (mirrormatrix); |
| } |
| #endif |
| } |
| |
| static void |
| gst_gl_effects_init (GstGLEffects * effects) |
| { |
| effects->horizontal_swap = FALSE; |
| effects->invert = FALSE; |
| effects->effect = gst_gl_effects_identity; |
| } |
| |
| static void |
| gst_gl_effects_filter_init (GstGLEffects * effects) |
| { |
| gst_gl_effects_set_effect (effects, |
| GST_GL_EFFECTS_GET_CLASS (effects)->filter_descriptor->effect); |
| } |
| |
| static void |
| gst_gl_effects_ghash_func_clean (gpointer key, gpointer value, gpointer data) |
| { |
| GstGLShader *shader = (GstGLShader *) value; |
| GstGLFilter *filter = (GstGLFilter *) data; |
| |
| //blocking call, wait the opengl thread has destroyed the shader |
| gst_gl_context_del_shader (GST_GL_BASE_FILTER (filter)->context, shader); |
| |
| value = NULL; |
| } |
| |
| static gboolean |
| gst_gl_effects_reset_resources (GstBaseTransform * trans) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (trans); |
| |
| /* release shaders in the gl thread */ |
| g_hash_table_foreach (effects->shaderstable, gst_gl_effects_ghash_func_clean, |
| effects); |
| |
| /* clean the htable without calling values destructors |
| * because shaders have been released in the glthread |
| * through the foreach func */ |
| g_hash_table_unref (effects->shaderstable); |
| effects->shaderstable = NULL; |
| |
| return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans); |
| } |
| |
| static void |
| gst_gl_effects_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (object); |
| |
| switch (prop_id) { |
| case PROP_EFFECT: |
| gst_gl_effects_set_effect (effects, g_value_get_enum (value)); |
| break; |
| case PROP_HSWAP: |
| effects->horizontal_swap = g_value_get_boolean (value); |
| break; |
| case PROP_INVERT: |
| effects->invert = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_gl_effects_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (object); |
| |
| switch (prop_id) { |
| case PROP_EFFECT: |
| g_value_set_enum (value, effects->current_effect); |
| break; |
| case PROP_HSWAP: |
| g_value_set_boolean (value, effects->horizontal_swap); |
| break; |
| case PROP_INVERT: |
| g_value_set_boolean (value, effects->invert); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static gboolean |
| gst_gl_effects_init_resources (GstBaseTransform * trans) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (trans); |
| gint i; |
| |
| effects->shaderstable = g_hash_table_new (g_str_hash, g_str_equal); |
| |
| for (i = 0; i < NEEDED_TEXTURES; i++) { |
| effects->midtexture[i] = 0; |
| } |
| for (i = 0; i < GST_GL_EFFECTS_N_CURVES; i++) { |
| effects->curve[i] = 0; |
| } |
| |
| return GST_BASE_TRANSFORM_CLASS (parent_class)->start (trans); |
| } |
| |
| static gboolean |
| gst_gl_effects_on_init_gl_context (GstGLFilter * filter) |
| { |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gl_effects_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex, |
| GstGLMemory * out_tex) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (filter); |
| |
| effects->intexture = in_tex; |
| effects->outtexture = out_tex; |
| |
| if (effects->horizontal_swap == TRUE) |
| set_horizontal_swap (effects); |
| |
| effects->effect (effects); |
| |
| return TRUE; |
| } |
| |
| GstGLShader * |
| gst_gl_effects_get_fragment_shader (GstGLEffects * effects, |
| const gchar * shader_name, const gchar * shader_source_gles2) |
| { |
| GstGLShader *shader = NULL; |
| GstGLFilter *filter = GST_GL_FILTER (effects); |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| |
| shader = g_hash_table_lookup (effects->shaderstable, shader_name); |
| |
| if (!shader) { |
| GError *error = NULL; |
| |
| if (!(shader = gst_gl_shader_new_link_with_stages (context, &error, |
| gst_glsl_stage_new_default_vertex (context), |
| gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER, |
| GST_GLSL_VERSION_NONE, |
| GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY, |
| shader_source_gles2), NULL))) { |
| GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND, |
| ("Failed to initialize %s shader", shader_name), (NULL)); |
| } |
| |
| 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"); |
| } |
| |
| g_hash_table_insert (effects->shaderstable, (gchar *) shader_name, shader); |
| |
| return shader; |
| } |
| |
| static const GstGLEffectsFilterDescriptor * |
| gst_gl_effects_filters_supported_properties (void) |
| { |
| /* Horizontal swap property is supported by all filters */ |
| static const GstGLEffectsFilterDescriptor effects[] = { |
| {GST_GL_EFFECT_SOBEL, PROP_INVERT, NULL}, |
| {GST_GL_EFFECT_LAPLACIAN, PROP_INVERT, NULL}, |
| {0, 0, NULL} |
| }; |
| return effects; |
| } |
| |
| static inline gboolean |
| gst_gl_effects_filters_is_property_supported (const GstGLEffectsFilterDescriptor |
| * descriptor, gint property) |
| { |
| /* generic filter (NULL descriptor) supports all properties */ |
| return !descriptor || (descriptor->supported_properties & property); |
| } |
| |
| static const GstGLEffectsFilterDescriptor * |
| gst_gl_effects_filters_descriptors (void) |
| { |
| static GstGLEffectsFilterDescriptor *descriptors = NULL; |
| if (!descriptors) { |
| const GEnumValue *e; |
| const GEnumValue *effect = gst_gl_effects_get_effects (); |
| const GstGLEffectsFilterDescriptor *defined; |
| guint n_filters = 0, i; |
| |
| for (e = effect; NULL != e->value_nick; ++e, ++n_filters) { |
| } |
| |
| descriptors = g_new0 (GstGLEffectsFilterDescriptor, n_filters + 1); |
| for (i = 0; i < n_filters; ++i, ++effect) { |
| descriptors[i].effect = effect->value; |
| descriptors[i].filter_name = effect->value_nick; |
| descriptors[i].filter_longname = effect->value_name; |
| } |
| |
| for (defined = gst_gl_effects_filters_supported_properties (); |
| 0 != defined->supported_properties; ++defined) { |
| |
| for (i = 0; i < n_filters; ++i) { |
| if (descriptors[i].effect == defined->effect) { |
| descriptors[i].supported_properties = defined->supported_properties; |
| break; |
| } |
| } |
| if (i >= n_filters) { |
| GST_WARNING ("Could not match gstgleffects-%s descriptor", |
| defined->filter_name); |
| } |
| } |
| } |
| return descriptors; |
| } |
| |
| gboolean |
| gst_gl_effects_register_filters (GstPlugin * plugin, GstRank rank) |
| { |
| static volatile gsize registered = 0; |
| |
| if (g_once_init_enter (®istered)) { |
| GTypeInfo info = { |
| sizeof (GstGLEffectsClass), |
| NULL, |
| NULL, |
| (GClassInitFunc) gst_gl_effects_filter_class_init, |
| NULL, |
| NULL, |
| sizeof (GstGLEffects), |
| 0, |
| NULL |
| }; |
| GType generic_type = |
| g_type_register_static (GST_TYPE_GL_EFFECTS, "GstGLEffectsGeneric", |
| &info, 0); |
| |
| if (gst_element_register (plugin, "gleffects", rank, generic_type)) { |
| const GstGLEffectsFilterDescriptor *filters; |
| for (filters = gst_gl_effects_filters_descriptors (); |
| NULL != filters->filter_name; ++filters) { |
| gchar *name = g_strdup_printf ("gleffects_%s", filters->filter_name); |
| GTypeInfo info = { |
| sizeof (GstGLEffectsClass), |
| NULL, |
| NULL, |
| (GClassInitFunc) gst_gl_effects_filter_class_init, |
| NULL, |
| filters, |
| sizeof (GstGLEffects), |
| 0, |
| (GInstanceInitFunc) gst_gl_effects_filter_init |
| }; |
| GType type = |
| g_type_register_static (GST_TYPE_GL_EFFECTS, name, &info, 0); |
| if (!gst_element_register (plugin, name, rank, type)) { |
| GST_WARNING ("Could not register %s", name); |
| } |
| g_free (name); |
| } |
| } |
| g_once_init_leave (®istered, generic_type); |
| } |
| return registered; |
| } |