Load any type of image
This commit is contained in:
130
Cargo.lock
generated
130
Cargo.lock
generated
@ -67,6 +67,12 @@ dependencies = [
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"windows-sys",
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]
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[[package]]
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name = "autocfg"
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version = "1.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
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[[package]]
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name = "backtrace"
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version = "0.3.75"
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@ -82,12 +88,30 @@ dependencies = [
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"windows-targets",
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]
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bitflags"
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version = "2.9.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
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[[package]]
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name = "bytemuck"
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version = "1.23.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c76a5792e44e4abe34d3abf15636779261d45a7450612059293d1d2cfc63422"
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[[package]]
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name = "byteorder-lite"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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@ -173,6 +197,15 @@ version = "1.0.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
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[[package]]
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name = "crc32fast"
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version = "1.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "eyre"
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version = "0.6.12"
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@ -183,6 +216,25 @@ dependencies = [
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"once_cell",
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]
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[[package]]
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name = "fdeflate"
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version = "0.3.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
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dependencies = [
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"simd-adler32",
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]
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[[package]]
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name = "flate2"
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version = "1.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4a3d7db9596fecd151c5f638c0ee5d5bd487b6e0ea232e5dc96d5250f6f94b1d"
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dependencies = [
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"crc32fast",
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"miniz_oxide",
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]
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[[package]]
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name = "gimli"
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version = "0.31.1"
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@ -195,6 +247,31 @@ version = "0.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
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[[package]]
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name = "image"
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version = "0.25.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "db35664ce6b9810857a38a906215e75a9c879f0696556a39f59c62829710251a"
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dependencies = [
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"bytemuck",
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"byteorder-lite",
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"image-webp",
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"num-traits",
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"png",
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"zune-core",
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"zune-jpeg",
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]
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[[package]]
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name = "image-webp"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f6970fe7a5300b4b42e62c52efa0187540a5bef546c60edaf554ef595d2e6f0b"
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dependencies = [
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"byteorder-lite",
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"quick-error",
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]
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[[package]]
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name = "indenter"
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version = "0.3.3"
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@ -232,6 +309,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
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dependencies = [
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"adler2",
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"simd-adler32",
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]
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[[package]]
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@ -240,12 +318,21 @@ version = "0.30.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
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dependencies = [
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"bitflags",
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"bitflags 2.9.1",
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"cfg-if",
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"cfg_aliases",
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"libc",
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]
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[[package]]
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name = "num-traits"
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version = "0.2.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
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dependencies = [
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"autocfg",
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]
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[[package]]
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name = "object"
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version = "0.36.7"
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@ -286,9 +373,23 @@ dependencies = [
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"clap",
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"color-eyre",
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"eyre",
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"image",
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"nix",
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]
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[[package]]
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name = "png"
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version = "0.17.16"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "82151a2fc869e011c153adc57cf2789ccb8d9906ce52c0b39a6b5697749d7526"
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dependencies = [
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"bitflags 1.3.2",
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"crc32fast",
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"fdeflate",
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"flate2",
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"miniz_oxide",
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]
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[[package]]
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name = "proc-macro2"
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version = "1.0.95"
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@ -298,6 +399,12 @@ dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quick-error"
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version = "2.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
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[[package]]
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name = "quote"
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version = "1.0.40"
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@ -322,6 +429,12 @@ dependencies = [
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"lazy_static",
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]
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[[package]]
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name = "simd-adler32"
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version = "0.3.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
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[[package]]
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name = "strsim"
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version = "0.11.1"
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@ -480,3 +593,18 @@ name = "windows_x86_64_msvc"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
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[[package]]
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name = "zune-core"
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version = "0.4.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a"
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[[package]]
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name = "zune-jpeg"
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version = "0.4.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2c9e525af0a6a658e031e95f14b7f889976b74a11ba0eca5a5fc9ac8a1c43a6a"
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dependencies = [
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"zune-core",
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]
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@ -7,4 +7,5 @@ edition = "2024"
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clap = { version = "4.5.39", features = ["derive"] }
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color-eyre = "0.6.5"
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eyre = "0.6.12"
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image = { version = "0.25.6", default-features = false, features = ["jpeg", "png", "webp"] }
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nix = { version = "0.30.1", features = ["ioctl"] }
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57
src/main.rs
57
src/main.rs
@ -1,12 +1,12 @@
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//! Image format is a buffer of `SCREEN_W * SCREEN_H + 1` bytes.
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//! The 4 least-significant bits of each byte is one pixel. The 4 most-significant bits are unused.
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//! Images are stored in landscape format, i.e. the first byte is the top-left pixel, and the
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//! second-to-last byte is the bottom-right pixel. The final byte is a null-terminator, and must be 0.
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use clap::Parser;
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use eyre::{Context, ensure, eyre};
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use eyre::{Context, bail, eyre};
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use image::ImageReader;
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use nix::ioctl_write_ptr;
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use std::{
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fs::File,
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io::Read,
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os::fd::AsRawFd,
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path::{Path, PathBuf},
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};
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use std::{fs::File, os::fd::AsRawFd, path::PathBuf};
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#[derive(Parser)]
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struct Opt {
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@ -14,11 +14,10 @@ struct Opt {
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pub path: PathBuf,
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}
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const SCREEN_W: usize = 1404;
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const SCREEN_H: usize = 1872;
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const SCREEN_W: usize = 1872;
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const SCREEN_H: usize = 1404;
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const BITS_PER_PIXEL: usize = 4;
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const FILE_SIZE: usize = SCREEN_W * SCREEN_H * BITS_PER_PIXEL / 8;
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const FILE_SIZE: usize = SCREEN_W * SCREEN_H + 1;
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// const SPI_IOC_MAGIC: u8 = b'k'; // Defined in linux/spi/spidev.h
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// const SPI_IOC_TYPE_MESSAGE: u8 = 0;
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@ -46,12 +45,29 @@ fn main() -> eyre::Result<()> {
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let opt = Opt::parse();
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color_eyre::install()?;
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let image =
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read_file(&opt.path).wrap_err_with(|| eyre!("Failed to read file at {:?}", opt.path))?;
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let mut image = ImageReader::open(&opt.path)?.decode()?;
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let image_dimensions = (image.width() as usize, image.height() as usize);
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match image_dimensions {
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(SCREEN_W, SCREEN_H) => {}
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(SCREEN_H, SCREEN_H) => image = image.rotate270(),
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_ => bail!("Image must be {SCREEN_W}x{SCREEN_H}"),
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}
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let image = image.to_luma8();
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let mut pixels = image.into_vec();
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for pixel in &mut pixels {
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*pixel >>= 4; // convert 8-bit colorspace to 4-bits.
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}
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pixels.push(0u8); // add a null-terminator
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// sanity check buffer length
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assert!(pixels.len() == FILE_SIZE);
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let set_off_screen_data = DrmRockchipEbcOffScreen {
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info1: 0, // TODO: what is this?
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ptr_screen_content: image.as_ptr(),
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ptr_screen_content: pixels.as_ptr(),
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};
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let driver_file = File::options()
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@ -64,16 +80,3 @@ fn main() -> eyre::Result<()> {
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Ok(())
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}
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fn read_file(path: &Path) -> eyre::Result<Vec<u8>> {
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let mut file = File::open(path)?;
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let mut buf = vec![0u8; FILE_SIZE];
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file.read_exact(&mut buf[..])
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.wrap_err_with(|| eyre!("Expected a raw image file, of exactly {FILE_SIZE} bytes"))?;
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// Try to read a single byte. If n != 0, it means the file was larger than FILE_SIZE
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let n = file.read(&mut [0u8])?;
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ensure!(n == 0, "File must be exacly {FILE_SIZE} bytes long");
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Ok(buf)
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}
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