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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@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 <gst/video/video.h>
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#include <gst/video/gstvideometa.h>
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#include "gstglmeta.h"
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/* GstVideoMeta map/unmap */
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gboolean
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gst_gl_meta_map (GstVideoMeta * meta, guint plane, GstMapInfo * info,
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gpointer * data, gint * stride, GstMapFlags flags)
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{
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return FALSE;
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}
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gboolean
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gst_gl_meta_unmap (GstVideoMeta * meta, guint plane, GstMapInfo * info)
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{
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return FALSE;
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}
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static void
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gst_gl_meta_init (GstGLMeta * gl_meta, gpointer params, GstBuffer * buffer)
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{
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gl_meta->buffer = buffer;
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}
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void
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gst_gl_meta_free (GstGLMeta * gl_meta, GstBuffer * buffer)
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{
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if (gl_meta->display) {
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g_object_unref (gl_meta->display);
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gl_meta->display = NULL;
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}
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}
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static gboolean
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gst_gl_meta_transform (GstBuffer * dest, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data)
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{
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GstGLMeta *dmeta, *smeta;
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smeta = (GstGLMeta *) meta;
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if (GST_META_TRANSFORM_IS_COPY (type)) {
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GstMetaTransformCopy *copy = data;
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if (!copy->region) {
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/* only copy if the complete data is copied as well */
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dmeta =
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(GstGLMeta *) gst_buffer_add_meta (dest, GST_GL_META_INFO,
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smeta->display);
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dmeta->buffer = dest;
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dmeta->memory =
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(GstGLMemory *) gst_memory_copy (GST_MEMORY_CAST (smeta->memory), 0,
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-1);
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}
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}
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return TRUE;
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}
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GType
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gst_gl_meta_api_get_type (void)
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{
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static volatile GType type;
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static const gchar *tags[] = { "memory", NULL }; /* don't know what to set here */
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if (g_once_init_enter (&type)) {
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GType _type = gst_meta_api_type_register ("GstGLMetaAPI", tags);
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g_once_init_leave (&type, _type);
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}
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return type;
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}
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const GstMetaInfo *
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gst_gl_meta_get_info (void)
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{
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static const GstMetaInfo *gl_meta_info = NULL;
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if (gl_meta_info == NULL) {
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gl_meta_info =
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gst_meta_register (GST_GL_META_API_TYPE, "GstGLMeta",
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sizeof (GstGLMeta), (GstMetaInitFunction) gst_gl_meta_init,
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(GstMetaFreeFunction) gst_gl_meta_free,
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(GstMetaTransformFunction) gst_gl_meta_transform);
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}
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return gl_meta_info;
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}
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/**
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* gst_buffer_add_gl_meta:
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* @buffer: a #GstBuffer
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* @display: the #GstGLDisplay to use
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*
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* Creates and adds a #GstGLMeta to a @buffer.
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*
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* Returns: (transfer full): a newly created #GstGLMeta
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*/
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GstGLMeta *
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gst_buffer_add_gl_meta (GstBuffer * buffer, GstGLDisplay * display)
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{
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GstGLMeta *gl_meta;
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gl_meta = (GstGLMeta *) gst_buffer_add_meta (buffer, GST_GL_META_INFO, NULL);
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gl_meta->display = g_object_ref (display);
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g_assert (gst_buffer_n_memory (buffer) == 1);
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gl_meta->memory = (GstGLMemory *) gst_buffer_get_memory (buffer, 0);
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return gl_meta;
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}
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