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3881c1f952
This is a winsys-specific API that allows exporting a DMA buffer fd. The CoglDmaBufHandle structure allows passing the ownership of the DMA buffer to whoever is using it, so the winsys doesn't need to manually track it. https://gitlab.gnome.org/GNOME/mutter/merge_requests/1086
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2020 Endless, Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
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*/
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#include "cogl-config.h"
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#include "cogl-dma-buf-handle.h"
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#include "cogl-object.h"
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#include <unistd.h>
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struct _CoglDmaBufHandle
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{
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CoglFramebuffer *framebuffer;
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int dmabuf_fd;
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gpointer user_data;
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GDestroyNotify destroy_func;
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};
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CoglDmaBufHandle *
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cogl_dma_buf_handle_new (CoglFramebuffer *framebuffer,
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int dmabuf_fd,
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gpointer user_data,
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GDestroyNotify destroy_func)
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{
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CoglDmaBufHandle *dmabuf_handle;
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g_assert (framebuffer);
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g_assert (dmabuf_fd != -1);
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dmabuf_handle = g_new0 (CoglDmaBufHandle, 1);
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dmabuf_handle->framebuffer = cogl_object_ref (framebuffer);
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dmabuf_handle->dmabuf_fd = dmabuf_fd;
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dmabuf_handle->user_data = user_data;
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dmabuf_handle->destroy_func = destroy_func;
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return dmabuf_handle;
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}
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void
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cogl_dma_buf_handle_free (CoglDmaBufHandle *dmabuf_handle)
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{
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g_return_if_fail (dmabuf_handle != NULL);
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g_clear_pointer (&dmabuf_handle->framebuffer, cogl_object_unref);
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if (dmabuf_handle->destroy_func)
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g_clear_pointer (&dmabuf_handle->user_data, dmabuf_handle->destroy_func);
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if (dmabuf_handle->dmabuf_fd != -1)
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close (dmabuf_handle->dmabuf_fd);
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g_free (dmabuf_handle);
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}
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CoglFramebuffer *
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cogl_dma_buf_handle_get_framebuffer (CoglDmaBufHandle *dmabuf_handle)
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{
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return dmabuf_handle->framebuffer;
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}
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int
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cogl_dma_buf_handle_get_fd (CoglDmaBufHandle *dmabuf_handle)
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{
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return dmabuf_handle->dmabuf_fd;
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}
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