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6491af9ffc
Allows callers to properly reference count the buffers used for rendering. Fixes a redraw race in glimagesink where the previous buffer (the one used for redraw operations) is freed as soon as the next buffer is uploaded. 1. glimagesink uploads in _prepare() to texture n 1.1 glupload holds buffer n 2. glimagesink _render()s texture n 3. glimagesink uploads texture n+1 3.1 glupload free previous buffer which deletes texture n 3.2 glupload holds buffer n+1 4. glwindow resize/expose 5. glimagesink redraws with texture n The race is that the buffer n (the one used for redrawing) is freed as soon as the buffer n+1 arrives. There could be any amount of time and number of redraws between this event and when buffer n+1 is actually rendered and thus replaces buffer n as the redraw source. https://bugzilla.gnome.org/show_bug.cgi?id=736740
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystree00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_GL_UPLOAD_H__
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#define __GST_GL_UPLOAD_H__
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#include <gst/video/video.h>
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#include <gst/gstmemory.h>
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#include <gst/gl/gstgl_fwd.h>
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G_BEGIN_DECLS
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GType gst_gl_upload_get_type (void);
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#define GST_TYPE_GL_UPLOAD (gst_gl_upload_get_type())
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#define GST_GL_UPLOAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_UPLOAD,GstGLUpload))
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#define GST_GL_UPLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GL_UPLOAD,GstGLUploadClass))
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#define GST_IS_GL_UPLOAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_UPLOAD))
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#define GST_IS_GL_UPLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GL_UPLOAD))
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#define GST_GL_UPLOAD_CAST(obj) ((GstGLUpload*)(obj))
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/**
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* GstGLUpload
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*
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* Opaque #GstGLUpload object
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*/
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struct _GstGLUpload
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{
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/* <private> */
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GstObject parent;
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GstGLContext *context;
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GstGLColorConvert *convert;
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/* input data */
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GstVideoInfo in_info;
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gboolean initted;
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GstGLMemory *in_tex[GST_VIDEO_MAX_PLANES];
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GstGLMemory *out_tex;
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/* <private> */
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GstGLUploadPrivate *priv;
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gpointer _reserved[GST_PADDING];
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};
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/**
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* GstGLUploadClass:
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*
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* The #GstGLUploadClass struct only contains private data
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*/
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struct _GstGLUploadClass
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{
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GstObjectClass object_class;
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};
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GstGLUpload * gst_gl_upload_new (GstGLContext * context);
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void gst_gl_upload_set_format (GstGLUpload * upload, GstVideoInfo * in_info);
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GstVideoInfo * gst_gl_upload_get_format (GstGLUpload * upload);
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gboolean gst_gl_upload_perform_with_buffer (GstGLUpload * upload, GstBuffer * buffer, guint * tex_id, GstBuffer ** outbuf);
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void gst_gl_upload_release_buffer (GstGLUpload * upload);
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gboolean gst_gl_upload_perform_with_data (GstGLUpload * upload, GLuint * texture_id,
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gpointer data[GST_VIDEO_MAX_PLANES], GstBuffer ** outbuf);
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gboolean gst_gl_upload_perform_with_gl_texture_upload_meta (GstGLUpload *upload, GstVideoGLTextureUploadMeta *meta, guint texture_id[4], GstBuffer ** outbuf);
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G_END_DECLS
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#endif /* __GST_GL_UPLOAD_H__ */
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