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dmabuf: Add support for separate alpha formats

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Support dmabuf formats with alpha in a separate plane.

Related: #6208
This commit is contained in:
Matthias Clasen 2023-11-13 19:46:33 -06:00
parent 7406cea257
commit c5727df568
1 changed files with 54 additions and 0 deletions
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54
gdk/gdkdmabuf.c
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@ -78,6 +78,55 @@ download_memcpy (guchar *dst_data,
}
}
static void
download_memcpy_3_1 (guchar *dst_data,
gsize dst_stride,
GdkMemoryFormat dst_format,
gsize width,
gsize height,
const GdkDmabuf *dmabuf,
const guchar *src_datas[GDK_DMABUF_MAX_PLANES],
gsize sizes[GDK_DMABUF_MAX_PLANES])
{
guint a;
guchar *dst_row;
const guchar *src_data, *src_row;
gsize src_stride;
g_assert (dmabuf->n_planes == 2);
download_memcpy (dst_data, dst_stride, dst_format, width, height, dmabuf, src_datas, sizes);
switch ((int)dst_format)
{
case GDK_MEMORY_A8R8G8B8:
case GDK_MEMORY_A8R8G8B8_PREMULTIPLIED:
case GDK_MEMORY_A8B8G8R8:
case GDK_MEMORY_A8B8G8R8_PREMULTIPLIED:
a = 0;
break;
case GDK_MEMORY_R8G8B8A8:
case GDK_MEMORY_R8G8B8A8_PREMULTIPLIED:
case GDK_MEMORY_B8G8R8A8:
case GDK_MEMORY_B8G8R8A8_PREMULTIPLIED:
a = 3;
break;
default:
g_assert_not_reached ();
}
src_stride = dmabuf->planes[1].stride;
src_data = src_datas[1];
for (gsize y = 0; y < height; y++)
{
dst_row = dst_data + y * dst_stride;
src_row = src_data + y * src_stride;
for (gsize x = 0; x < width; x++)
dst_row[4 * x + a] = src_row[x];
}
}
typedef struct _YUVCoefficients YUVCoefficients;
struct _YUVCoefficients
@ -332,6 +381,11 @@ static const GdkDrmFormatInfo supported_formats[] = {
{ DRM_FORMAT_ABGR16161616F, GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED, GDK_MEMORY_R16G16B16A16_FLOAT, download_memcpy },
{ DRM_FORMAT_RGB888, GDK_MEMORY_R8G8B8, GDK_MEMORY_R8G8B8, download_memcpy },
{ DRM_FORMAT_BGR888, GDK_MEMORY_B8G8R8, GDK_MEMORY_B8G8R8, download_memcpy },
/* 3 + 1 formats */
{ DRM_FORMAT_BGRX8888_A8, GDK_MEMORY_A8R8G8B8_PREMULTIPLIED, GDK_MEMORY_A8R8G8B8, download_memcpy_3_1 },
{ DRM_FORMAT_RGBX8888_A8, GDK_MEMORY_A8B8G8R8_PREMULTIPLIED, GDK_MEMORY_A8B8G8R8, download_memcpy_3_1 },
{ DRM_FORMAT_XBGR8888_A8, GDK_MEMORY_R8G8B8A8_PREMULTIPLIED, GDK_MEMORY_R8G8B8A8, download_memcpy_3_1 },
{ DRM_FORMAT_XRGB8888_A8, GDK_MEMORY_B8G8R8A8_PREMULTIPLIED, GDK_MEMORY_B8G8R8A8, download_memcpy_3_1 },
/* YUV formats */
{ DRM_FORMAT_NV12, GDK_MEMORY_R8G8B8, GDK_MEMORY_R8G8B8, download_nv12 },
{ DRM_FORMAT_NV21, GDK_MEMORY_R8G8B8, GDK_MEMORY_R8G8B8, download_nv12 },