use std::fmt;
#[cfg(feature = "vulkano")]
use vulkano::format::Format as VulkanFormat;
#[cfg(feature = "vulkano")]
use vulkano::image::ImageAspect as VulkanImageAspect;
use crate::checked_arithmetic;
use crate::rutabaga_gralloc::gralloc::ImageAllocationInfo;
use crate::rutabaga_gralloc::gralloc::ImageMemoryRequirements;
use crate::rutabaga_utils::*;
pub const DRM_FORMAT_R8: [u8; 4] = [b'R', b'8', b' ', b' '];
pub const DRM_FORMAT_RGB565: [u8; 4] = [b'R', b'G', b'1', b'6'];
pub const DRM_FORMAT_BGR888: [u8; 4] = [b'B', b'G', b'2', b'4'];
pub const DRM_FORMAT_XRGB8888: [u8; 4] = [b'X', b'R', b'2', b'4'];
pub const DRM_FORMAT_XBGR8888: [u8; 4] = [b'X', b'B', b'2', b'4'];
pub const DRM_FORMAT_ARGB8888: [u8; 4] = [b'A', b'R', b'2', b'4'];
pub const DRM_FORMAT_ABGR8888: [u8; 4] = [b'A', b'B', b'2', b'4'];
pub const DRM_FORMAT_XRGB2101010: [u8; 4] = [b'X', b'R', b'3', b'0'];
pub const DRM_FORMAT_XBGR2101010: [u8; 4] = [b'X', b'B', b'3', b'0'];
pub const DRM_FORMAT_ARGB2101010: [u8; 4] = [b'A', b'R', b'3', b'0'];
pub const DRM_FORMAT_ABGR2101010: [u8; 4] = [b'A', b'B', b'3', b'0'];
pub const DRM_FORMAT_ABGR16161616F: [u8; 4] = [b'A', b'B', b'4', b'H'];
pub const DRM_FORMAT_NV12: [u8; 4] = [b'N', b'V', b'1', b'2'];
pub const DRM_FORMAT_YVU420: [u8; 4] = [b'Y', b'V', b'1', b'2'];
#[derive(Copy, Clone, Eq, PartialEq, Default)]
pub struct DrmFormat(pub u32);
#[derive(Copy, Clone)]
pub struct PlanarLayout {
pub num_planes: usize,
horizontal_subsampling: [u32; 3],
vertical_subsampling: [u32; 3],
bytes_per_pixel: [u32; 3],
}
static PACKED_1BPP: PlanarLayout = PlanarLayout {
num_planes: 1,
horizontal_subsampling: [1, 0, 0],
vertical_subsampling: [1, 0, 0],
bytes_per_pixel: [1, 0, 0],
};
static PACKED_2BPP: PlanarLayout = PlanarLayout {
num_planes: 1,
horizontal_subsampling: [1, 0, 0],
vertical_subsampling: [1, 0, 0],
bytes_per_pixel: [2, 0, 0],
};
static PACKED_3BPP: PlanarLayout = PlanarLayout {
num_planes: 1,
horizontal_subsampling: [1, 0, 0],
vertical_subsampling: [1, 0, 0],
bytes_per_pixel: [3, 0, 0],
};
static PACKED_4BPP: PlanarLayout = PlanarLayout {
num_planes: 1,
horizontal_subsampling: [1, 0, 0],
vertical_subsampling: [1, 0, 0],
bytes_per_pixel: [4, 0, 0],
};
static PACKED_8BPP: PlanarLayout = PlanarLayout {
num_planes: 1,
horizontal_subsampling: [1, 0, 0],
vertical_subsampling: [1, 0, 0],
bytes_per_pixel: [8, 0, 0],
};
static BIPLANAR_YUV420: PlanarLayout = PlanarLayout {
num_planes: 2,
horizontal_subsampling: [1, 2, 0],
vertical_subsampling: [1, 2, 0],
bytes_per_pixel: [1, 2, 0],
};
static TRIPLANAR_YUV420: PlanarLayout = PlanarLayout {
num_planes: 3,
horizontal_subsampling: [1, 2, 2],
vertical_subsampling: [1, 2, 2],
bytes_per_pixel: [1, 1, 1],
};
impl DrmFormat {
#[inline(always)]
pub fn new(a: u8, b: u8, c: u8, d: u8) -> DrmFormat {
DrmFormat(a as u32 | (b as u32) << 8 | (c as u32) << 16 | (d as u32) << 24)
}
#[inline(always)]
pub fn to_bytes(&self) -> [u8; 4] {
let f = self.0;
[f as u8, (f >> 8) as u8, (f >> 16) as u8, (f >> 24) as u8]
}
pub fn planar_layout(&self) -> RutabagaResult<PlanarLayout> {
match self.to_bytes() {
DRM_FORMAT_R8 => Ok(PACKED_1BPP),
DRM_FORMAT_RGB565 => Ok(PACKED_2BPP),
DRM_FORMAT_BGR888 => Ok(PACKED_3BPP),
DRM_FORMAT_ABGR2101010
| DRM_FORMAT_ABGR8888
| DRM_FORMAT_XBGR2101010
| DRM_FORMAT_XBGR8888
| DRM_FORMAT_ARGB2101010
| DRM_FORMAT_ARGB8888
| DRM_FORMAT_XRGB2101010
| DRM_FORMAT_XRGB8888 => Ok(PACKED_4BPP),
DRM_FORMAT_ABGR16161616F => Ok(PACKED_8BPP),
DRM_FORMAT_NV12 => Ok(BIPLANAR_YUV420),
DRM_FORMAT_YVU420 => Ok(TRIPLANAR_YUV420),
_ => Err(RutabagaError::InvalidGrallocDrmFormat),
}
}
#[cfg(feature = "vulkano")]
pub fn vulkan_format(&self) -> RutabagaResult<VulkanFormat> {
match self.to_bytes() {
DRM_FORMAT_R8 => Ok(VulkanFormat::R8_UNORM),
DRM_FORMAT_RGB565 => Ok(VulkanFormat::R5G6B5_UNORM_PACK16),
DRM_FORMAT_BGR888 => Ok(VulkanFormat::R8G8B8_UNORM),
DRM_FORMAT_ABGR2101010 | DRM_FORMAT_XBGR2101010 => {
Ok(VulkanFormat::A2R10G10B10_UNORM_PACK32)
}
DRM_FORMAT_ABGR8888 | DRM_FORMAT_XBGR8888 => Ok(VulkanFormat::R8G8B8A8_UNORM),
DRM_FORMAT_ARGB2101010 | DRM_FORMAT_XRGB2101010 => {
Ok(VulkanFormat::A2B10G10R10_UNORM_PACK32)
}
DRM_FORMAT_ARGB8888 | DRM_FORMAT_XRGB8888 => Ok(VulkanFormat::B8G8R8A8_UNORM),
DRM_FORMAT_ABGR16161616F => Ok(VulkanFormat::R16G16B16A16_SFLOAT),
DRM_FORMAT_NV12 => Ok(VulkanFormat::G8_B8R8_2PLANE_420_UNORM),
DRM_FORMAT_YVU420 => Ok(VulkanFormat::G8_B8_R8_3PLANE_420_UNORM),
_ => Err(RutabagaError::InvalidGrallocDrmFormat),
}
}
#[cfg(feature = "vulkano")]
pub fn vulkan_image_aspect(&self, plane: usize) -> RutabagaResult<VulkanImageAspect> {
match self.to_bytes() {
DRM_FORMAT_R8
| DRM_FORMAT_RGB565
| DRM_FORMAT_BGR888
| DRM_FORMAT_ABGR2101010
| DRM_FORMAT_ABGR8888
| DRM_FORMAT_XBGR2101010
| DRM_FORMAT_XBGR8888
| DRM_FORMAT_ARGB2101010
| DRM_FORMAT_ARGB8888
| DRM_FORMAT_XRGB2101010
| DRM_FORMAT_XRGB8888 => Ok(VulkanImageAspect::Color),
DRM_FORMAT_NV12 => match plane {
0 => Ok(VulkanImageAspect::Plane0),
1 => Ok(VulkanImageAspect::Plane1),
_ => Err(RutabagaError::InvalidGrallocNumberOfPlanes),
},
DRM_FORMAT_YVU420 => match plane {
0 => Ok(VulkanImageAspect::Plane0),
1 => Ok(VulkanImageAspect::Plane1),
2 => Ok(VulkanImageAspect::Plane2),
_ => Err(RutabagaError::InvalidGrallocNumberOfPlanes),
},
_ => Err(RutabagaError::InvalidGrallocDrmFormat),
}
}
}
impl From<u32> for DrmFormat {
fn from(u: u32) -> DrmFormat {
DrmFormat(u)
}
}
impl From<DrmFormat> for u32 {
fn from(f: DrmFormat) -> u32 {
f.0
}
}
impl fmt::Debug for DrmFormat {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let b = self.to_bytes();
if b.iter().all(u8::is_ascii_graphic) {
write!(
f,
"fourcc({}{}{}{})",
b[0] as char, b[1] as char, b[2] as char, b[3] as char
)
} else {
write!(
f,
"fourcc(0x{:02x}{:02x}{:02x}{:02x})",
b[0], b[1], b[2], b[3]
)
}
}
}
fn stride_from_layout(layout: &PlanarLayout, width: u32, plane: usize) -> RutabagaResult<u32> {
let bytes_per_pixel = layout.bytes_per_pixel[plane];
let horizontal_subsampling = layout.horizontal_subsampling[plane];
let subsampled_width = checked_arithmetic!(width / horizontal_subsampling)?;
let stride = checked_arithmetic!(bytes_per_pixel * subsampled_width)?;
Ok(stride)
}
pub fn canonical_image_requirements(
info: ImageAllocationInfo,
) -> RutabagaResult<ImageMemoryRequirements> {
let mut image_requirements: ImageMemoryRequirements = Default::default();
let mut size: u32 = 0;
let layout = info.drm_format.planar_layout()?;
for plane in 0..layout.num_planes {
let plane_stride = stride_from_layout(&layout, info.width, plane)?;
image_requirements.strides[plane] = plane_stride;
if plane > 0 {
image_requirements.offsets[plane] = size;
}
let height = info.height;
let vertical_subsampling = layout.vertical_subsampling[plane];
let subsampled_height = checked_arithmetic!(height / vertical_subsampling)?;
let plane_size = checked_arithmetic!(subsampled_height * plane_stride)?;
size = checked_arithmetic!(size + plane_size)?;
}
image_requirements.info = info;
image_requirements.size = size as u64;
Ok(image_requirements)
}
#[cfg(test)]
mod tests {
use std::fmt::Write;
use super::*;
use crate::rutabaga_gralloc::RutabagaGrallocFlags;
#[test]
fn format_debug() {
let f = DrmFormat::new(b'X', b'R', b'2', b'4');
let mut buf = String::new();
write!(&mut buf, "{:?}", f).unwrap();
assert_eq!(buf, "fourcc(XR24)");
let f = DrmFormat::new(0, 1, 2, 16);
let mut buf = String::new();
write!(&mut buf, "{:?}", f).unwrap();
assert_eq!(buf, "fourcc(0x00010210)");
}
#[test]
fn canonical_formats() {
let mut info = ImageAllocationInfo {
width: 10,
height: 10,
drm_format: DrmFormat::new(b'R', b'8', b' ', b' '),
flags: RutabagaGrallocFlags::empty(),
};
let r8_reqs = canonical_image_requirements(info).unwrap();
assert_eq!(r8_reqs.info.width, 10);
assert_eq!(r8_reqs.info.height, 10);
assert_eq!(r8_reqs.strides[0], 10);
assert_eq!(r8_reqs.strides[1], 0);
assert_eq!(r8_reqs.strides[2], 0);
assert_eq!(r8_reqs.offsets[0], 0);
assert_eq!(r8_reqs.offsets[1], 0);
assert_eq!(r8_reqs.offsets[2], 0);
assert_eq!(r8_reqs.size, 100);
info.drm_format = DrmFormat::new(b'X', b'R', b'2', b'4');
let xr24_reqs = canonical_image_requirements(info).unwrap();
assert_eq!(xr24_reqs.info.width, 10);
assert_eq!(xr24_reqs.info.height, 10);
assert_eq!(xr24_reqs.strides[0], 40);
assert_eq!(xr24_reqs.strides[1], 0);
assert_eq!(xr24_reqs.strides[2], 0);
assert_eq!(xr24_reqs.offsets[0], 0);
assert_eq!(xr24_reqs.offsets[1], 0);
assert_eq!(xr24_reqs.offsets[2], 0);
assert_eq!(xr24_reqs.size, 400);
}
#[test]
fn canonical_planar_formats() {
let mut info = ImageAllocationInfo {
width: 10,
height: 10,
drm_format: DrmFormat::new(b'N', b'V', b'1', b'2'),
flags: RutabagaGrallocFlags::empty(),
};
let nv12_reqs = canonical_image_requirements(info).unwrap();
assert_eq!(nv12_reqs.info.width, 10);
assert_eq!(nv12_reqs.info.height, 10);
assert_eq!(nv12_reqs.strides[0], 10);
assert_eq!(nv12_reqs.strides[1], 10);
assert_eq!(nv12_reqs.strides[2], 0);
assert_eq!(nv12_reqs.offsets[0], 0);
assert_eq!(nv12_reqs.offsets[1], 100);
assert_eq!(nv12_reqs.offsets[2], 0);
assert_eq!(nv12_reqs.size, 150);
info.drm_format = DrmFormat::new(b'Y', b'V', b'1', b'2');
let yv12_reqs = canonical_image_requirements(info).unwrap();
assert_eq!(yv12_reqs.info.width, 10);
assert_eq!(yv12_reqs.info.height, 10);
assert_eq!(yv12_reqs.strides[0], 10);
assert_eq!(yv12_reqs.strides[1], 5);
assert_eq!(yv12_reqs.strides[2], 5);
assert_eq!(yv12_reqs.offsets[0], 0);
assert_eq!(yv12_reqs.offsets[1], 100);
assert_eq!(yv12_reqs.offsets[2], 125);
assert_eq!(yv12_reqs.size, 150);
}
}