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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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31be382a90
git-svn-id: svn://svn.wobow.com/GStreamer_playground/gst-plugins-gl@493 93df14bb-0f41-7a43-8087-d3e2a2f0e464
145 lines
4 KiB
C
145 lines
4 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstglbuffer.h"
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static GObjectClass* gst_gl_buffer_parent_class;
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static void
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gst_gl_buffer_finalize (GstGLBuffer* buffer)
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{
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//wait clear textures end, blocking call
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gst_gl_display_clearTexture (buffer->display, buffer->texture,
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buffer->texture_u, buffer->texture_v);
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g_object_unref (buffer->display);
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GST_MINI_OBJECT_CLASS (gst_gl_buffer_parent_class)->
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finalize (GST_MINI_OBJECT (buffer));
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}
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static void
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gst_gl_buffer_init (GstGLBuffer* buffer, gpointer g_class)
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{
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buffer->display = NULL;
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buffer->video_format = 0;
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buffer->texture = 0;
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buffer->texture_u = 0;
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buffer->texture_v = 0;
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buffer->width = 0;
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buffer->height = 0;
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}
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static void
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gst_gl_buffer_class_init (gpointer g_class, gpointer class_data)
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{
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GstMiniObjectClass* mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
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gst_gl_buffer_parent_class = g_type_class_peek_parent (g_class);
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mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
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gst_gl_buffer_finalize;
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}
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GType
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gst_gl_buffer_get_type (void)
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{
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static GType _gst_gl_buffer_type;
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if (G_UNLIKELY (_gst_gl_buffer_type == 0)) {
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static const GTypeInfo info = {
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sizeof (GstBufferClass),
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NULL,
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NULL,
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gst_gl_buffer_class_init,
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NULL,
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NULL,
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sizeof (GstGLBuffer),
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0,
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(GInstanceInitFunc) gst_gl_buffer_init,
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NULL
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};
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_gst_gl_buffer_type = g_type_register_static (GST_TYPE_BUFFER,
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"GstGLBuffer", &info, 0);
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}
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return _gst_gl_buffer_type;
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}
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GstGLBuffer*
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gst_gl_buffer_new_from_video_format (GstGLDisplay* display,
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GstVideoFormat video_format, gint context_width, gint context_height,
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gint width, gint height)
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{
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GstGLBuffer *buffer;
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//g_return_val_if_fail (video_format != GST_VIDEO_FORMAT_UNKNOWN, NULL);
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g_return_val_if_fail (display != NULL, NULL);
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g_return_val_if_fail (width > 0, NULL);
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g_return_val_if_fail (height > 0, NULL);
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buffer = (GstGLBuffer *) gst_mini_object_new (GST_TYPE_GL_BUFFER);
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buffer->display = g_object_ref (display);
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buffer->width = width;
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buffer->height = height;
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buffer->video_format = video_format;
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GST_BUFFER_SIZE (buffer) = gst_gl_buffer_format_get_size (video_format, context_width, context_height);
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//blocking call, init texture
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if (video_format != GST_VIDEO_FORMAT_UNKNOWN)
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gst_gl_display_textureRequested (buffer->display, buffer->video_format,
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buffer->width, buffer->height,
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&buffer->texture, &buffer->texture_u, &buffer->texture_v) ;
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return buffer;
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}
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int
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gst_gl_buffer_format_get_size (GstVideoFormat format, int width, int height)
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{
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/* this is not strictly true, but it's used for compatibility with
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* queue and BaseTransform */
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return width * height * 4;
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}
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gboolean
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gst_gl_buffer_format_parse_caps (GstCaps * caps, GstVideoFormat * format,
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gint* width, gint* height)
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{
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GstStructure *structure;
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gboolean ret;
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_has_name (structure, "video/x-raw-gl"))
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return FALSE;
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ret = gst_structure_get_int (structure, "width", width);
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ret &= gst_structure_get_int (structure, "height", height);
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return ret;
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}
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