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egl/dri2: Add a helper for the number of planes for a FOURCC format

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This also serves as a convenient "is this a fourcc format" check as well
which we'll take advantage of in the next commit.

Cc: mesa-stable@lists.freedesktop.org
Tested-By: Eero Tamminen <eero.t.tamminen@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
This commit is contained in:
Jason Ekstrand
2018-08-28 16:31:22 -05:00
parent 19bdc7dd0f
commit b95896f492
1 changed files with 21 additions and 11 deletions
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src/egl/drivers/dri2/egl_dri2.c
+21 -11
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@@ -2224,13 +2224,13 @@ dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
return EGL_TRUE;
}
/* Returns the total number of file descriptors. Zero indicates an error. */
/* Returns the total number of planes for the format or zero if it isn't a
* valid fourcc format.
*/
static unsigned
dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
dri2_num_fourcc_format_planes(EGLint format)
{
unsigned plane_n;
switch (attrs->DMABufFourCC.Value) {
switch (format) {
case DRM_FORMAT_R8:
case DRM_FORMAT_RG88:
case DRM_FORMAT_GR88:
@@ -2278,14 +2278,14 @@ dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
plane_n = 1;
break;
return 1;
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV21:
case DRM_FORMAT_NV16:
case DRM_FORMAT_NV61:
plane_n = 2;
break;
return 2;
case DRM_FORMAT_YUV410:
case DRM_FORMAT_YVU410:
case DRM_FORMAT_YUV411:
@@ -2296,9 +2296,19 @@ dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
case DRM_FORMAT_YVU422:
case DRM_FORMAT_YUV444:
case DRM_FORMAT_YVU444:
plane_n = 3;
break;
return 3;
default:
return 0;
}
}
/* Returns the total number of file descriptors. Zero indicates an error. */
static unsigned
dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
{
unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
if (plane_n == 0) {
_eglError(EGL_BAD_ATTRIBUTE, "invalid format");
return 0;
}