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dmabuf: Add gdk_dmabuf_get_fourcc()

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Returns the fourcc for a given GdkMemoryFormat.

Not sure if this is the best name, but I didn't know a better one.
This commit is contained in:
Benjamin Otte 2023-11-24 11:05:01 +01:00
parent b6c82c6b54
commit 50ee872978
2 changed files with 96 additions and 0 deletions
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94
gdk/gdkdmabuf.c
View File

@ -543,6 +543,100 @@ gdk_dmabuf_get_memory_format (guint32 fourcc,
return TRUE;
}
gboolean
gdk_dmabuf_get_fourcc (GdkMemoryFormat format,
guint32 *out_fourcc)
{
/* we're not walking the list on purpose, so that we can keep track
* of exact matches here. Certain DRM formats map to the same memory
* format and we don't want the list to accidentally get mixed up.
*/
switch (format)
{
case GDK_MEMORY_B8G8R8A8_PREMULTIPLIED:
case GDK_MEMORY_B8G8R8A8:
*out_fourcc = DRM_FORMAT_ARGB8888;
return TRUE;
case GDK_MEMORY_A8R8G8B8_PREMULTIPLIED:
case GDK_MEMORY_A8R8G8B8:
*out_fourcc = DRM_FORMAT_BGRA8888;
return TRUE;
case GDK_MEMORY_A8B8G8R8_PREMULTIPLIED:
case GDK_MEMORY_A8B8G8R8:
*out_fourcc = DRM_FORMAT_RGBA8888;
return TRUE;
case GDK_MEMORY_R8G8B8A8_PREMULTIPLIED:
case GDK_MEMORY_R8G8B8A8:
*out_fourcc = DRM_FORMAT_ABGR8888;
return TRUE;
case GDK_MEMORY_R8G8B8:
*out_fourcc = DRM_FORMAT_BGR888;
return TRUE;
case GDK_MEMORY_B8G8R8:
*out_fourcc = DRM_FORMAT_RGB888;
return TRUE;
case GDK_MEMORY_B8G8R8X8:
*out_fourcc = DRM_FORMAT_XRGB8888;
return TRUE;
case GDK_MEMORY_X8R8G8B8:
*out_fourcc = DRM_FORMAT_BGRX8888;
return TRUE;
case GDK_MEMORY_R8G8B8X8:
*out_fourcc = DRM_FORMAT_XBGR8888;
return TRUE;
case GDK_MEMORY_X8B8G8R8:
*out_fourcc = DRM_FORMAT_RGBX8888;
return TRUE;
case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
case GDK_MEMORY_R16G16B16A16_FLOAT:
*out_fourcc = DRM_FORMAT_ABGR16161616F;
return TRUE;
case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
case GDK_MEMORY_R16G16B16A16:
*out_fourcc = DRM_FORMAT_ABGR16161616;
return TRUE;
case GDK_MEMORY_G8:
*out_fourcc = DRM_FORMAT_R8;
return TRUE;
case GDK_MEMORY_G16:
*out_fourcc = DRM_FORMAT_R16;
return TRUE;
case GDK_MEMORY_R16G16B16:
case GDK_MEMORY_R16G16B16_FLOAT:
case GDK_MEMORY_R32G32B32_FLOAT:
case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
case GDK_MEMORY_R32G32B32A32_FLOAT:
case GDK_MEMORY_G8A8_PREMULTIPLIED:
case GDK_MEMORY_G8A8:
case GDK_MEMORY_G16A16_PREMULTIPLIED:
case GDK_MEMORY_G16A16:
case GDK_MEMORY_A8:
case GDK_MEMORY_A16:
case GDK_MEMORY_A16_FLOAT:
case GDK_MEMORY_A32_FLOAT:
return FALSE;
case GDK_MEMORY_N_FORMATS:
default:
g_assert_not_reached ();
return FALSE;
}
}
static gboolean
gdk_dmabuf_direct_downloader_add_formats (const GdkDmabufDownloader *downloader,
GdkDisplay *display,

2
gdk/gdkdmabufprivate.h
View File

@ -54,5 +54,7 @@ gboolean gdk_dmabuf_is_disjoint (const GdkDmabuf
gboolean gdk_dmabuf_get_memory_format (guint32 fourcc,
gboolean premultiplied,
GdkMemoryFormat *out_format);
gboolean gdk_dmabuf_get_fourcc (GdkMemoryFormat format,
guint32 *out_fourcc);
#endif