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dd8c6e9f51
Tries to sanitize the dmabuf to conform to the values expected by Vulkan/EGL which should also be the values expected by Wayland compositors We put these sanitized values into the GdkDmabufTexture, by sanitizing the input from GdkDmabufTextureBuilder, which are controlled by the callers. Things we do here: 1. Disallow any dmabuf format that we do not know. 1. Treat the INVALID modifier the same as LINEAR. 2. Ignore all other modifiers. 3. Try and fix various inconsistencies between V4L and Mesa, like NV12. *** WARNING *** This function is not absolutely perfect, you do not have a perfect dmabuf afterwards. In particular, it doesn't check sizes.
51 lines
2.5 KiB
C
51 lines
2.5 KiB
C
#pragma once
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#include "gdkdmabufformatsbuilderprivate.h"
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#define GDK_DMABUF_MAX_PLANES 4
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typedef struct _GdkDmabuf GdkDmabuf;
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typedef struct _GdkDmabufDownloader GdkDmabufDownloader;
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struct _GdkDmabuf
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{
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guint32 fourcc;
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guint64 modifier;
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unsigned int n_planes;
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struct {
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int fd;
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unsigned int stride;
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unsigned int offset;
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} planes[GDK_DMABUF_MAX_PLANES];
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};
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struct _GdkDmabufDownloader
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{
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void (* add_formats) (const GdkDmabufDownloader *downloader,
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GdkDisplay *display,
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GdkDmabufFormatsBuilder *builder);
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gboolean (* supports) (const GdkDmabufDownloader *downloader,
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GdkDisplay *display,
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const GdkDmabuf *dmabuf,
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gboolean premultiplied,
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GdkMemoryFormat *out_format,
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GError **error);
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void (* download) (const GdkDmabufDownloader *downloader,
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GdkTexture *texture,
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GdkMemoryFormat format,
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guchar *data,
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gsize stride);
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};
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#ifdef HAVE_LINUX_DMA_BUF_H
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const GdkDmabufDownloader *
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gdk_dmabuf_get_direct_downloader (void) G_GNUC_CONST;
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gboolean gdk_dmabuf_sanitize (GdkDmabuf *dest,
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gsize width,
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gsize height,
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const GdkDmabuf *src,
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GError **error);
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#endif
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