add diff rle and run decoding on final byte array
This commit is contained in:
parent
eca5344c66
commit
3af9be328c
6 changed files with 308 additions and 48 deletions
155
encoder/Cargo.lock
generated
155
encoder/Cargo.lock
generated
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@ -38,13 +38,6 @@ version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "compressor"
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version = "0.1.0"
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dependencies = [
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"image",
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]
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[[package]]
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name = "crc32fast"
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version = "1.4.0"
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@ -54,6 +47,41 @@ dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "encoder"
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version = "0.1.0"
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dependencies = [
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"enum-map",
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"image",
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"num_enum",
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]
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[[package]]
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name = "enum-map"
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version = "2.7.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6866f3bfdf8207509a033af1a75a7b08abda06bbaaeae6669323fd5a097df2e9"
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dependencies = [
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"enum-map-derive",
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]
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[[package]]
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name = "enum-map-derive"
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version = "0.17.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f282cfdfe92516eb26c2af8589c274c7c17681f5ecc03c18255fe741c6aa64eb"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "equivalent"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
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[[package]]
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name = "fdeflate"
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version = "0.3.4"
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@ -73,6 +101,12 @@ dependencies = [
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"miniz_oxide",
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]
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[[package]]
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name = "hashbrown"
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version = "0.14.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
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[[package]]
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name = "image"
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version = "0.25.1"
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@ -85,6 +119,22 @@ dependencies = [
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"png",
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]
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[[package]]
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name = "indexmap"
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version = "2.2.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
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dependencies = [
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"equivalent",
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"hashbrown",
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]
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[[package]]
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name = "memchr"
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version = "2.7.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
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[[package]]
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name = "miniz_oxide"
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version = "0.7.2"
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@ -104,6 +154,27 @@ dependencies = [
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"autocfg",
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]
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[[package]]
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name = "num_enum"
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version = "0.7.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "02339744ee7253741199f897151b38e72257d13802d4ee837285cc2990a90845"
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dependencies = [
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"num_enum_derive",
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]
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[[package]]
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name = "num_enum_derive"
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version = "0.7.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "681030a937600a36906c185595136d26abfebb4aa9c65701cefcaf8578bb982b"
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dependencies = [
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"proc-macro-crate",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "png"
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version = "0.17.13"
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@ -117,8 +188,78 @@ dependencies = [
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"miniz_oxide",
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]
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[[package]]
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name = "proc-macro-crate"
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version = "3.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6d37c51ca738a55da99dc0c4a34860fd675453b8b36209178c2249bb13651284"
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dependencies = [
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"toml_edit",
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]
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[[package]]
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name = "proc-macro2"
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version = "1.0.79"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.36"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
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dependencies = [
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"proc-macro2",
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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 = "syn"
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version = "2.0.58"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "toml_datetime"
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version = "0.6.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
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[[package]]
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name = "toml_edit"
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version = "0.21.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6a8534fd7f78b5405e860340ad6575217ce99f38d4d5c8f2442cb5ecb50090e1"
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dependencies = [
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"indexmap",
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"toml_datetime",
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"winnow",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
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[[package]]
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name = "winnow"
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version = "0.5.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f593a95398737aeed53e489c785df13f3618e41dbcd6718c6addbf1395aa6876"
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dependencies = [
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"memchr",
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]
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@ -6,4 +6,6 @@ edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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enum-map = "2.7.3"
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image = { version = "0.25.1", default-features = false, features = ["png"] }
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num_enum = "0.7.2"
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@ -1,7 +1,36 @@
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use crate::*;
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pub fn rle_horizontal(_prev_frame: &Frame, encoded: &[u8]) -> Frame {
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let pixels = rle_255_decode(encoded);
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pub fn rle_diff_horizontal(prev_frame: &Frame, encoded: &[u8], reader: &mut usize) -> Frame {
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let (runs, decoded) = rle_255_decode_until(encoded, FRAME_SIZE);
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*reader += runs;
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let mut frame = prev_frame.clone();
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let mut i = 0;
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for y in 0..HEIGHT {
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for x in 0..WIDTH {
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frame[x][y] ^= decoded[i];
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i += 1;
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}
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}
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frame
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}
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pub fn rle_diff_vertical(prev_frame: &Frame, encoded: &[u8], reader: &mut usize) -> Frame {
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let (runs, decoded) = rle_255_decode_until(encoded, FRAME_SIZE);
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*reader += runs;
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let mut frame = prev_frame.clone();
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let mut i = 0;
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for x in 0..WIDTH {
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for y in 0..HEIGHT {
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frame[x][y] ^= decoded[i];
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i += 1;
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}
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}
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frame
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}
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pub fn rle_horizontal(_prev_frame: &Frame, encoded: &[u8], reader: &mut usize) -> Frame {
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let (runs, pixels) = rle_255_decode_until(encoded, FRAME_SIZE);
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*reader += runs;
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let mut frame = FRAME_0;
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let mut i = 0;
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for y in 0..HEIGHT {
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@ -13,8 +42,9 @@ pub fn rle_horizontal(_prev_frame: &Frame, encoded: &[u8]) -> Frame {
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frame
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}
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pub fn rle_vertical(_prev_frame: &Frame, encoded: &[u8]) -> Frame {
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let pixels = rle_255_decode(encoded);
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pub fn rle_vertical(_prev_frame: &Frame, encoded: &[u8], reader: &mut usize) -> Frame {
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let (runs, pixels) = rle_255_decode_until(encoded, FRAME_SIZE);
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*reader += runs;
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let mut frame = FRAME_0;
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let mut i = 0;
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for x in 0..WIDTH {
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@ -26,10 +56,10 @@ pub fn rle_vertical(_prev_frame: &Frame, encoded: &[u8]) -> Frame {
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frame
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}
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pub fn fill_white(_prev_frame: &Frame, _encoded: &[u8]) -> Frame {
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pub fn fill_white(_prev_frame: &Frame, _encoded: &[u8], _reader: &mut usize) -> Frame {
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FRAME_1
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}
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pub fn fill_black(_prev_frame: &Frame, _encoded: &[u8]) -> Frame {
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pub fn fill_black(_prev_frame: &Frame, _encoded: &[u8], _reader: &mut usize) -> Frame {
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FRAME_0
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}
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@ -1,5 +1,31 @@
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use crate::*;
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pub fn rle_diff_horizontal(prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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let mut pixels = Vec::new();
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for y in 0..HEIGHT {
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for x in 0..WIDTH {
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pixels.push(frame[x][y] ^ prev_frame[x][y]);
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}
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}
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EncodedFrame {
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encoding: Encoding::RLEDiffHorizontal,
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data: rle_255_encode(&pixels),
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}
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}
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pub fn rle_diff_vertical(prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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let mut pixels = Vec::new();
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for x in 0..WIDTH {
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for y in 0..HEIGHT {
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pixels.push(frame[x][y] ^ prev_frame[x][y]);
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}
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}
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EncodedFrame {
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encoding: Encoding::RLEDiffVertical,
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data: rle_255_encode(&pixels),
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}
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}
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pub fn rle_horizontal(_prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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let mut pixels = Vec::new();
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for y in 0..HEIGHT {
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@ -9,7 +35,6 @@ pub fn rle_horizontal(_prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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}
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EncodedFrame {
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encoding: Encoding::RLEHorizontal,
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head_u4: 0,
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data: rle_255_encode(&pixels),
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}
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}
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@ -23,7 +48,6 @@ pub fn rle_vertical(_prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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}
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EncodedFrame {
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encoding: Encoding::RLEVertical,
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head_u4: 0,
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data: rle_255_encode(&pixels),
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}
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}
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@ -31,7 +55,6 @@ pub fn rle_vertical(_prev_frame: &Frame, frame: &Frame) -> EncodedFrame {
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pub fn fill_white(_prev_frame: &Frame, _frame: &Frame) -> EncodedFrame {
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EncodedFrame {
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encoding: Encoding::FillWhite,
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head_u4: 0,
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data: Vec::new(),
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}
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}
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@ -39,7 +62,6 @@ pub fn fill_white(_prev_frame: &Frame, _frame: &Frame) -> EncodedFrame {
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pub fn fill_black(_prev_frame: &Frame, _frame: &Frame) -> EncodedFrame {
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EncodedFrame {
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encoding: Encoding::FillBlack,
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head_u4: 0,
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data: Vec::new(),
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}
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}
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@ -1,33 +1,67 @@
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use enum_map::{Enum, EnumMap};
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use num_enum::TryFromPrimitive;
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mod dec;
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mod enc;
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mod util;
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pub use util::*;
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const INTERACTIVE: bool = false;
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const INSPECT_ENC: bool = false;
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const INSPECT_DEC: bool = true;
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fn main() {
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let frames = get_all_frames("../video/frames/");
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let encoded = encode(&frames);
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println!("{} frames, total {} bytes", frames.len(), encoded.len());
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//
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// todo print average bytes per frame for each encoding type
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let mut stats: EnumMap<Encoding, u32> = EnumMap::default();
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let mut reader = 0;
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let mut last_frame = FRAME_0;
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let mut frame_index = 0;
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while reader < encoded.len() {
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let frame_type: Encoding = encoded[reader].try_into().unwrap();
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stats[frame_type] += 1;
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reader += 1;
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let decoder = get_matching_decoder(frame_type);
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last_frame = decoder(&last_frame, &encoded[reader..], &mut reader);
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if INSPECT_DEC {
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println!("\n{frame_type:?}");
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render_images(&frames[frame_index], &last_frame);
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wait_for_input();
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frame_index += 1;
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}
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}
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for (encoding, frames) in stats.iter() {
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println!("{encoding:?} - {frames} frames");
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}
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println!();
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println!(
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"{} frames, total {} bytes (~{} bpf)",
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frames.len(),
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encoded.len(),
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encoded.len() / frames.len()
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);
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}
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fn encode(frames: &[Frame]) -> Vec<u8> {
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let mut out = Vec::new();
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let encodings: Vec<(FrameEncoder, FrameDecoder)> = vec![
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(enc::fill_white, dec::fill_white),
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(enc::fill_black, dec::fill_black),
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(enc::rle_horizontal, dec::rle_horizontal),
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(enc::rle_vertical, dec::rle_vertical),
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let encodings: Vec<FrameEncoder> = vec![
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enc::fill_white,
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enc::fill_black,
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enc::rle_horizontal,
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enc::rle_vertical,
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enc::rle_diff_horizontal,
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enc::rle_diff_vertical,
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];
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let max_error = 0;
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let mut last_frame = FRAME_0;
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for frame in frames {
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let mut options = Vec::new();
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for (encode, decode) in &encodings {
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for encode in &encodings {
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let encoded = encode(&last_frame, frame);
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let decoded = decode(&last_frame, &encoded.data);
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let decode = get_matching_decoder(encoded.encoding);
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let decoded = decode(&last_frame, &encoded.data, &mut 0);
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let error = frame_error(frame, &decoded);
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if error <= max_error {
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options.push(encoded);
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@ -35,7 +69,7 @@ fn encode(frames: &[Frame]) -> Vec<u8> {
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}
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options.sort_by_key(|b| b.data.len());
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let best_encoding = options.into_iter().next().unwrap();
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if INTERACTIVE {
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if INSPECT_ENC {
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println!();
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println!(
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"{:?}, {} bytes",
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@ -43,8 +77,7 @@ fn encode(frames: &[Frame]) -> Vec<u8> {
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best_encoding.data.len() + 1
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);
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render_image(frame);
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let mut a = String::new();
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std::io::stdin().read_line(&mut a).unwrap();
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wait_for_input();
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}
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let best_encoding = best_encoding.into_bytes();
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out.extend_from_slice(&best_encoding);
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@ -53,38 +86,59 @@ fn encode(frames: &[Frame]) -> Vec<u8> {
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out
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}
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#[derive(Debug)]
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#[derive(Debug, TryFromPrimitive, Enum, Copy, Clone)]
|
||||
#[repr(u8)]
|
||||
enum Encoding {
|
||||
FillWhite,
|
||||
FillBlack,
|
||||
RLEHorizontal,
|
||||
RLEVertical,
|
||||
BGStrips,
|
||||
CellDiff8Horizontal,
|
||||
CellDiff8Vertical,
|
||||
RLEDiffHorizontal,
|
||||
RLEDiffVertical,
|
||||
BGStripsH,
|
||||
BGStripsV,
|
||||
QuadTree,
|
||||
DrawCommands,
|
||||
CellDiff8H,
|
||||
CellDiff8V,
|
||||
CellDiff4HH,
|
||||
CellDiff4HV,
|
||||
CellDiff4VH,
|
||||
CellDiff4VV,
|
||||
}
|
||||
|
||||
fn get_matching_decoder(encoding: Encoding) -> FrameDecoder {
|
||||
match encoding {
|
||||
Encoding::FillWhite => dec::fill_white,
|
||||
Encoding::FillBlack => dec::fill_black,
|
||||
Encoding::RLEHorizontal => dec::rle_horizontal,
|
||||
Encoding::RLEVertical => dec::rle_vertical,
|
||||
Encoding::RLEDiffHorizontal => dec::rle_diff_horizontal,
|
||||
Encoding::RLEDiffVertical => dec::rle_diff_vertical,
|
||||
Encoding::BGStripsH => todo!(),
|
||||
Encoding::BGStripsV => todo!(),
|
||||
Encoding::QuadTree => todo!(),
|
||||
Encoding::DrawCommands => todo!(),
|
||||
Encoding::CellDiff8H => todo!(),
|
||||
Encoding::CellDiff8V => todo!(),
|
||||
Encoding::CellDiff4HH => todo!(),
|
||||
Encoding::CellDiff4HV => todo!(),
|
||||
Encoding::CellDiff4VH => todo!(),
|
||||
Encoding::CellDiff4VV => todo!(),
|
||||
}
|
||||
}
|
||||
|
||||
type FrameEncoder = fn(previous_frame: &Frame, new_frame: &Frame) -> EncodedFrame;
|
||||
type FrameDecoder = fn(previous_frame: &Frame, encoded_bytes: &[u8]) -> Frame;
|
||||
type FrameDecoder = fn(previous_frame: &Frame, encoded_bytes: &[u8], reader: &mut usize) -> Frame;
|
||||
|
||||
struct EncodedFrame {
|
||||
encoding: Encoding,
|
||||
head_u4: u8,
|
||||
data: Vec<u8>,
|
||||
}
|
||||
|
||||
impl EncodedFrame {
|
||||
fn into_bytes(self) -> Vec<u8> {
|
||||
let head = (self.encoding as u8) << 4;
|
||||
let head = head | (self.head_u4 & 15);
|
||||
|
||||
let mut out = Vec::with_capacity(self.data.len() + 1);
|
||||
out.push(head);
|
||||
out.extend(self.data.into_iter());
|
||||
out
|
||||
fn into_bytes(mut self) -> Vec<u8> {
|
||||
self.data.insert(0, self.encoding as u8);
|
||||
self.data
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,12 +7,16 @@ use image::{self, DynamicImage, GenericImageView, ImageFormat, Rgba};
|
|||
|
||||
pub const WIDTH: usize = 40;
|
||||
pub const HEIGHT: usize = 32;
|
||||
pub const SIZE: usize = WIDTH * HEIGHT;
|
||||
pub const FRAME_SIZE: usize = WIDTH * HEIGHT;
|
||||
|
||||
pub type Frame = [[u8; HEIGHT]; WIDTH];
|
||||
pub const FRAME_0: Frame = [[0; HEIGHT]; WIDTH];
|
||||
pub const FRAME_1: Frame = [[1; HEIGHT]; WIDTH];
|
||||
|
||||
pub fn wait_for_input() {
|
||||
std::io::stdin().read_line(&mut String::new()).unwrap();
|
||||
}
|
||||
|
||||
fn convert_pixel(rgba: Rgba<u8>) -> u8 {
|
||||
(rgba.0[0] > 128) as u8
|
||||
}
|
||||
|
|
@ -75,7 +79,9 @@ pub fn render_images(left: &Frame, right: &Frame) {
|
|||
for y in 0..(HEIGHT / 2) {
|
||||
for x in 0..WIDTH {
|
||||
render_pixel_pair(left, x, y);
|
||||
print!(" ");
|
||||
}
|
||||
print!(" ");
|
||||
for x in 0..WIDTH {
|
||||
render_pixel_pair(right, x, y);
|
||||
}
|
||||
println!();
|
||||
|
|
@ -102,14 +108,19 @@ pub fn rle_255_encode(raw: &[u8]) -> Vec<u8> {
|
|||
encoded
|
||||
}
|
||||
|
||||
pub fn rle_255_decode(encoded: &[u8]) -> Vec<u8> {
|
||||
pub fn rle_255_decode_until(encoded: &[u8], max_size: usize) -> (usize, Vec<u8>) {
|
||||
let mut raw = Vec::new();
|
||||
let mut val = 0;
|
||||
let mut consumed_bytes = 0;
|
||||
for &run in encoded {
|
||||
consumed_bytes += 1;
|
||||
for _ in 0..run {
|
||||
raw.push(val);
|
||||
}
|
||||
if raw.len() >= max_size {
|
||||
break;
|
||||
}
|
||||
val = 1 - val;
|
||||
}
|
||||
raw
|
||||
(consumed_bytes, raw)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue