| /* |
| * GStreamer |
| * Copyright (C) 2007 David Schleef <ds@schleef.org> |
| * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com> |
| * 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. |
| */ |
| |
| #ifndef _GST_GL_FILTER_H_ |
| #define _GST_GL_FILTER_H_ |
| |
| #include <gst/gst.h> |
| #include <gst/base/gstbasetransform.h> |
| #include <gst/video/video.h> |
| |
| #include <gst/gl/gl.h> |
| |
| G_BEGIN_DECLS |
| |
| GType gst_gl_filter_get_type(void); |
| #define GST_TYPE_GL_FILTER (gst_gl_filter_get_type()) |
| #define GST_GL_FILTER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_FILTER,GstGLFilter)) |
| #define GST_IS_GL_FILTER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_FILTER)) |
| #define GST_GL_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_FILTER,GstGLFilterClass)) |
| #define GST_IS_GL_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_FILTER)) |
| #define GST_GL_FILTER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_FILTER,GstGLFilterClass)) |
| |
| typedef struct _GstGLFilter GstGLFilter; |
| typedef struct _GstGLFilterClass GstGLFilterClass; |
| |
| /** |
| * GstGLFilter: |
| * @base_transform: parent #GstBaseTransform |
| * @pool: the currently configured #GstBufferPool |
| * @display: the currently configured #GstGLDisplay |
| * @in_info: the video info for input buffers |
| * @out_info: the video info for output buffers |
| * @fbo: GL Framebuffer object used for transformations |
| * @depthbuffer: GL renderbuffer attached to @fbo |
| * @upload: the object used for uploading data, if needed |
| * @download: the object used for downloading data, if needed |
| * |
| * #GstGLFilter is a base class that provides the logic of getting the GL context |
| * from downstream and automatic upload/download for non-#GstGLMemory |
| * #GstBuffer<!-- -->s. |
| */ |
| struct _GstGLFilter |
| { |
| GstBaseTransform base_transform; |
| |
| GstBufferPool *pool; |
| |
| GstGLDisplay *display; |
| |
| GstVideoInfo in_info; |
| GstVideoInfo out_info; |
| |
| GstCaps *out_caps; |
| |
| GLuint fbo; |
| GLuint depthbuffer; |
| |
| GstGLUpload *upload; |
| GstGLDownload *download; |
| |
| /* <private> */ |
| GLuint in_tex_id; |
| GLuint out_tex_id; |
| |
| GstGLShader *default_shader; |
| |
| GstGLContext *context; |
| GstGLContext *other_context; |
| |
| #if GST_GL_HAVE_GLES2 |
| GLint draw_attr_position_loc; |
| GLint draw_attr_texture_loc; |
| #endif |
| }; |
| |
| /** |
| * GstGLFilterClass: |
| * @base_transform_class: parent class |
| * @set_caps: mirror from #GstBaseTransform |
| * @filter: perform operations on the input and output buffers. In general, |
| * you should avoid using this method if at all possible. One valid |
| * use-case for using this is keeping previous buffers for future calculations. |
| * Note: If @filter exists, then @filter_texture is not run |
| * @filter_texture: given @in_tex, transform it into @out_tex. Not used |
| * if @filter exists |
| * @onInitFBO: perform initialization when the Framebuffer object is created |
| * @onStart: called when element activates see also #GstBaseTransform |
| * @onStop: called when the element deactivates e also #GstBaseTransform |
| * @onReset: called on inizialation and after @onStop |
| * @display_init_cb: execute arbitrary gl code on start |
| * @display_reset_cb: execute arbitrary gl code at stop |
| */ |
| struct _GstGLFilterClass |
| { |
| GstBaseTransformClass base_transform_class; |
| |
| gboolean (*set_caps) (GstGLFilter* filter, GstCaps* incaps, GstCaps* outcaps); |
| gboolean (*filter) (GstGLFilter *filter, GstBuffer *inbuf, GstBuffer *outbuf); |
| gboolean (*filter_texture) (GstGLFilter *filter, guint in_tex, guint out_tex); |
| gboolean (*onInitFBO) (GstGLFilter *filter); |
| |
| void (*onStart) (GstGLFilter *filter); |
| void (*onStop) (GstGLFilter *filter); |
| void (*onReset) (GstGLFilter *filter); |
| |
| /* useful to init and cleanup custom gl resources */ |
| void (*display_init_cb) (GstGLFilter *filter); |
| void (*display_reset_cb) (GstGLFilter *filter); |
| }; |
| |
| gboolean gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf, |
| GstBuffer * outbuf); |
| |
| void gst_gl_filter_render_to_target (GstGLFilter *filter, gboolean resize, GLuint input, |
| GLuint target, GLCB func, gpointer data); |
| |
| void gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter, gboolean resize, |
| GLuint input, GLuint target, GstGLShader *shader); |
| |
| void gst_gl_filter_draw_texture (GstGLFilter *filter, GLuint texture, guint width, guint height); |
| |
| G_END_DECLS |
| |
| #endif /* _GST_GL_FILTER_H_ */ |