mirror of
https://github.com/brl/mutter.git
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f8daa6bc70
Avoids dealing directly with mmap() and munmap(). https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1237
145 lines
4.2 KiB
C
145 lines
4.2 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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#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_DMA_BUF_HANDLE_H__
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#define __COGL_DMA_BUF_HANDLE_H__
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#include <cogl/cogl-types.h>
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#include <cogl/cogl-framebuffer.h>
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/**
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* cogl_dma_buf_handle_new: (skip)
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*/
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COGL_EXPORT CoglDmaBufHandle *
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cogl_dma_buf_handle_new (CoglFramebuffer *framebuffer,
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int dmabuf_fd,
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int width,
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int height,
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int stride,
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int offset,
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int bpp,
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gpointer user_data,
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GDestroyNotify destroy_func);
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/**
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* cogl_dma_buf_handle_free: (skip)
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*
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* Releases @dmabuf_handle; it is a programming error to release
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* an already released handle.
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*/
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COGL_EXPORT void
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cogl_dma_buf_handle_free (CoglDmaBufHandle *dmabuf_handle);
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COGL_EXPORT gboolean
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cogl_dma_buf_handle_sync_read_start (CoglDmaBufHandle *dmabuf_handle,
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GError **error);
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COGL_EXPORT gboolean
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cogl_dma_buf_handle_sync_read_end (CoglDmaBufHandle *dmabuf_handle,
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GError **error);
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COGL_EXPORT gpointer
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cogl_dma_buf_handle_mmap (CoglDmaBufHandle *dmabuf_handle,
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GError **error);
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COGL_EXPORT gboolean
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cogl_dma_buf_handle_munmap (CoglDmaBufHandle *dmabuf_handle,
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gpointer data,
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GError **error);
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/**
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* cogl_dma_buf_handle_get_framebuffer: (skip)
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*
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* Retrieves the #CoglFramebuffer, backed by an exported DMABuf buffer,
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* of @dmabuf_handle.
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*
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* Returns: (transfer none): a #CoglFramebuffer
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*/
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COGL_EXPORT CoglFramebuffer *
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cogl_dma_buf_handle_get_framebuffer (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dma_buf_handle_get_fd: (skip)
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*
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* Retrieves the file descriptor of @dmabuf_handle.
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*
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* Returns: a valid file descriptor
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_fd (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dmabuf_handle_get_width: (skip)
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*
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* Returns: the buffer width
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_width (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dmabuf_handle_get_height: (skip)
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*
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* Returns: the buffer height
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_height (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dmabuf_handle_get_stride: (skip)
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*
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* Returns: the buffer stride
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_stride (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dmabuf_handle_get_offset: (skip)
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*
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* Returns: the buffer offset
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_offset (CoglDmaBufHandle *dmabuf_handle);
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/**
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* cogl_dmabuf_handle_get_bpp: (skip)
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*
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* Returns: the number of bytes per pixel
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*/
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COGL_EXPORT int
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cogl_dma_buf_handle_get_bpp (CoglDmaBufHandle *dmabuf_handle);
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#endif /* __COGL_DMA_BUF_HANDLE_H__ */
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