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9d867356df
Fixes a potential GPU stall if an immediately freed texture/buffer is attempted to be reused immediately by the CPU, e.g. when uploading. Problematic scenario is this: 1. element does GPU processing reading from texture 2. frees the buffer back to the pool 3. pool acquire returns the just released buffer 4. GPU processing then has to wait for the previous GPU operation to complete causing a stall If there was a reliable way to know whether a buffer had been finished with across all GPU drivers, we would use it. However as that does not exist, this workaround is to keep the released buffer unusable until the next released buffer. This is the same approach as is used in the qml (Qt5) elements. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5144>
89 lines
2.7 KiB
C
89 lines
2.7 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., 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_BUFFER_POOL_H_
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#define _GST_GL_BUFFER_POOL_H_
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#include <gst/video/gstvideometa.h>
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#include <gst/video/gstvideopool.h>
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#include <gst/gl/gstglbasememory.h>
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G_BEGIN_DECLS
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/* buffer pool functions */
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GST_GL_API
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GType gst_gl_buffer_pool_get_type (void);
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#define GST_TYPE_GL_BUFFER_POOL (gst_gl_buffer_pool_get_type())
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#define GST_IS_GL_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_BUFFER_POOL))
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#define GST_GL_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BUFFER_POOL, GstGLBufferPool))
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#define GST_GL_BUFFER_POOL_CAST(obj) ((GstGLBufferPool*)(obj))
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/**
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* GstGLBufferPool:
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*
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* Opaque GstGLBufferPool struct
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*/
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struct _GstGLBufferPool
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{
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GstBufferPool bufferpool;
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GstGLContext *context;
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/*< private >*/
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GstGLBufferPoolPrivate *priv;
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gpointer _padding[GST_PADDING];
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};
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/**
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* GstGLBufferPoolClass:
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*
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* The #GstGLBufferPoolClass structure contains only private data
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*/
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struct _GstGLBufferPoolClass
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{
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GstBufferPoolClass parent_class;
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/*< private >*/
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gpointer _padding[GST_PADDING];
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};
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GST_GL_API
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GstBufferPool *gst_gl_buffer_pool_new (GstGLContext * context);
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GST_GL_API
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GstGLAllocationParams * gst_gl_buffer_pool_get_gl_allocation_params (GstGLBufferPool * pool);
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GST_GL_API
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GstGLAllocationParams * gst_buffer_pool_config_get_gl_allocation_params (GstStructure * config);
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GST_GL_API
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void gst_buffer_pool_config_set_gl_allocation_params (GstStructure * config,
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const GstGLAllocationParams * params);
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GST_GL_API
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guint gst_buffer_pool_config_get_gl_min_free_queue_size (GstStructure * config);
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GST_GL_API
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void gst_buffer_pool_config_set_gl_min_free_queue_size (GstStructure * config,
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guint queue_size);
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G_END_DECLS
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#endif /* _GST_GL_BUFFER_POOL_H_ */
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