diff options
Diffstat (limited to 'third_party/rust/audio-mixer')
| -rw-r--r-- | third_party/rust/audio-mixer/.cargo-checksum.json | 1 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/Cargo.lock | 603 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/Cargo.toml | 42 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/LICENSE | 373 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/README.md | 39 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/benches/benchmark.rs | 95 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/install_rustfmt_clippy.sh | 17 | ||||
| -rwxr-xr-x | third_party/rust/audio-mixer/run_sanitizers.sh | 53 | ||||
| -rwxr-xr-x | third_party/rust/audio-mixer/run_tests.sh | 17 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/src/channel.rs | 78 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/src/coefficient.rs | 756 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/src/lib.rs | 81 | ||||
| -rw-r--r-- | third_party/rust/audio-mixer/src/main.rs | 50 |
13 files changed, 2205 insertions, 0 deletions
diff --git a/third_party/rust/audio-mixer/.cargo-checksum.json b/third_party/rust/audio-mixer/.cargo-checksum.json new file mode 100644 index 0000000000..4fbdd1518d --- /dev/null +++ b/third_party/rust/audio-mixer/.cargo-checksum.json @@ -0,0 +1 @@ +{"files":{"Cargo.lock":"ac8d6a7af46ee8f72d22abb80575109b75bcb2a20ea6cacb6626a20f337fe51f","Cargo.toml":"9316753099606b9531ea52aec87270a83e74c15b6563f8f979b0e961e0cf73fd","LICENSE":"1f256ecad192880510e84ad60474eab7589218784b9a50bc7ceee34c2b91f1d5","README.md":"e2e6b7d80550743e01faa26c19f6c8520fd0dc5db68021c042fd523eed46c799","benches/benchmark.rs":"33e9d85cee38fb7752e9315ccf5f816179309062bfb78118288f7e1495e3616f","install_rustfmt_clippy.sh":"4ae90d8dcb9757cb3ae4ae142ef80e5377c0dde61c63f4a3c32418646e80ca7b","run_sanitizers.sh":"e31b4a11559b52043920c63e6ad4e57051d6205883ecf2b2c48e105ba522015b","run_tests.sh":"21ca30cb6d41c6b35e6207e3283292933ef6628575dd587287fad6db2afb22bd","src/channel.rs":"d948d890219b810632277d2b04297334a47dc6639ef93309e74495ff408f82b6","src/coefficient.rs":"24f56281a1b800769feefc735d77c2ec03f1aa8d7c58c256b25ce1a9053a06cc","src/lib.rs":"f0ee59ac224ce6ba0cc6cb9e1796e85b9b751ba4d92c58fe3fb8b10c95b72cc4","src/main.rs":"b5ba05638c727040581c49ffd2d784493af658495cd424ce8c9365f779994baf"},"package":"c41dc008c1973ce58ff3cfc52df53814a9b7b78d73d95b071b5ff0ed4b2db3e1"}
\ No newline at end of file diff --git a/third_party/rust/audio-mixer/Cargo.lock b/third_party/rust/audio-mixer/Cargo.lock new file mode 100644 index 0000000000..68d1ba2441 --- /dev/null +++ b/third_party/rust/audio-mixer/Cargo.lock @@ -0,0 +1,603 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "aho-corasick" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0f2135563fb5c609d2b2b87c1e8ce7bc41b0b45430fa9661f457981503dd5bf0" +dependencies = [ + "memchr", +] + +[[package]] +name = "atty" +version = "0.2.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8" +dependencies = [ + "hermit-abi 0.1.19", + "libc", + "winapi", +] + +[[package]] +name = "audio-mixer" +version = "0.1.3" +dependencies = [ + "bitflags", + "criterion", + "float-cmp", +] + +[[package]] +name = "autocfg" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa" + +[[package]] +name = "bitflags" +version = "1.3.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a" + +[[package]] +name = "bumpalo" +version = "3.14.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7f30e7476521f6f8af1a1c4c0b8cc94f0bee37d91763d0ca2665f299b6cd8aec" + +[[package]] +name = "cast" +version = "0.3.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5" + +[[package]] +name = "cfg-if" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd" + +[[package]] +name = "clap" +version = "2.34.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c" +dependencies = [ + "bitflags", + "textwrap", + "unicode-width", +] + +[[package]] +name = "criterion" +version = "0.3.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "b01d6de93b2b6c65e17c634a26653a29d107b3c98c607c765bf38d041531cd8f" +dependencies = [ + "atty", + "cast", + "clap", + "criterion-plot", + "csv", + "itertools", + "lazy_static", + "num-traits", + "oorandom", + "plotters", + "rayon", + "regex", + "serde", + "serde_cbor", + "serde_derive", + "serde_json", + "tinytemplate", + "walkdir", +] + +[[package]] +name = "criterion-plot" +version = "0.4.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2673cc8207403546f45f5fd319a974b1e6983ad1a3ee7e6041650013be041876" +dependencies = [ + "cast", + "itertools", +] + +[[package]] +name = "crossbeam-channel" +version = "0.5.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a33c2bf77f2df06183c3aa30d1e96c0695a313d4f9c453cc3762a6db39f99200" +dependencies = [ + "cfg-if", + "crossbeam-utils", +] + +[[package]] +name = "crossbeam-deque" +version = "0.8.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef" +dependencies = [ + "cfg-if", + "crossbeam-epoch", + "crossbeam-utils", +] + +[[package]] +name = "crossbeam-epoch" +version = "0.9.15" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7" +dependencies = [ + "autocfg", + "cfg-if", + "crossbeam-utils", + "memoffset", + "scopeguard", +] + +[[package]] +name = "crossbeam-utils" +version = "0.8.16" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5a22b2d63d4d1dc0b7f1b6b2747dd0088008a9be28b6ddf0b1e7d335e3037294" +dependencies = [ + "cfg-if", +] + +[[package]] +name = "csv" +version = "1.2.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "626ae34994d3d8d668f4269922248239db4ae42d538b14c398b74a52208e8086" +dependencies = [ + "csv-core", + "itoa", + "ryu", + "serde", +] + +[[package]] +name = "csv-core" +version = "0.1.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2b2466559f260f48ad25fe6317b3c8dac77b5bdb5763ac7d9d6103530663bc90" +dependencies = [ + "memchr", +] + +[[package]] +name = "either" +version = "1.9.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07" + +[[package]] +name = "float-cmp" +version = "0.6.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "da62c4f1b81918835a8c6a484a397775fff5953fe83529afd51b05f5c6a6617d" +dependencies = [ + "num-traits", +] + +[[package]] +name = "half" +version = "1.8.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "eabb4a44450da02c90444cf74558da904edde8fb4e9035a9a6a4e15445af0bd7" + +[[package]] +name = "hermit-abi" +version = "0.1.19" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33" +dependencies = [ + "libc", +] + +[[package]] +name = "hermit-abi" +version = "0.3.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "443144c8cdadd93ebf52ddb4056d257f5b52c04d3c804e657d19eb73fc33668b" + +[[package]] +name = "itertools" +version = "0.10.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473" +dependencies = [ + "either", +] + +[[package]] +name = "itoa" +version = "1.0.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38" + +[[package]] +name = "js-sys" +version = "0.3.64" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c5f195fe497f702db0f318b07fdd68edb16955aed830df8363d837542f8f935a" +dependencies = [ + "wasm-bindgen", +] + +[[package]] +name = "lazy_static" +version = "1.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646" + +[[package]] +name = "libc" +version = "0.2.148" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9cdc71e17332e86d2e1d38c1f99edcb6288ee11b815fb1a4b049eaa2114d369b" + +[[package]] +name = "log" +version = "0.4.20" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f" + +[[package]] +name = "memchr" +version = "2.6.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8f232d6ef707e1956a43342693d2a31e72989554d58299d7a88738cc95b0d35c" + +[[package]] +name = "memoffset" +version = "0.9.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c" +dependencies = [ + "autocfg", +] + +[[package]] +name = "num-traits" +version = "0.2.16" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f30b0abd723be7e2ffca1272140fac1a2f084c77ec3e123c192b66af1ee9e6c2" +dependencies = [ + "autocfg", +] + +[[package]] +name = "num_cpus" +version = "1.16.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43" +dependencies = [ + "hermit-abi 0.3.2", + "libc", +] + +[[package]] +name = "once_cell" +version = "1.18.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d" + +[[package]] +name = "oorandom" +version = "11.1.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575" + +[[package]] +name = "plotters" +version = "0.3.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d2c224ba00d7cadd4d5c660deaf2098e5e80e07846537c51f9cfa4be50c1fd45" +dependencies = [ + "num-traits", + "plotters-backend", + "plotters-svg", + "wasm-bindgen", + "web-sys", +] + +[[package]] +name = "plotters-backend" +version = "0.3.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9e76628b4d3a7581389a35d5b6e2139607ad7c75b17aed325f210aa91f4a9609" + +[[package]] +name = "plotters-svg" +version = "0.3.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "38f6d39893cca0701371e3c27294f09797214b86f1fb951b89ade8ec04e2abab" +dependencies = [ + "plotters-backend", +] + +[[package]] +name = "proc-macro2" +version = "1.0.67" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3d433d9f1a3e8c1263d9456598b16fec66f4acc9a74dacffd35c7bb09b3a1328" +dependencies = [ + "unicode-ident", +] + +[[package]] +name = "quote" +version = "1.0.33" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae" +dependencies = [ + "proc-macro2", +] + +[[package]] +name = "rayon" +version = "1.7.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1d2df5196e37bcc87abebc0053e20787d73847bb33134a69841207dd0a47f03b" +dependencies = [ + "either", + "rayon-core", +] + +[[package]] +name = "rayon-core" +version = "1.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4b8f95bd6966f5c87776639160a66bd8ab9895d9d4ab01ddba9fc60661aebe8d" +dependencies = [ + "crossbeam-channel", + "crossbeam-deque", + "crossbeam-utils", + "num_cpus", +] + +[[package]] +name = "regex" +version = "1.9.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "697061221ea1b4a94a624f67d0ae2bfe4e22b8a17b6a192afb11046542cc8c47" +dependencies = [ + "aho-corasick", + "memchr", + "regex-automata", + "regex-syntax", +] + +[[package]] +name = "regex-automata" +version = "0.3.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c2f401f4955220693b56f8ec66ee9c78abffd8d1c4f23dc41a23839eb88f0795" +dependencies = [ + "aho-corasick", + "memchr", + "regex-syntax", +] + +[[package]] +name = "regex-syntax" +version = "0.7.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da" + +[[package]] +name = "ryu" +version = "1.0.15" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741" + +[[package]] +name = "same-file" +version = "1.0.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502" +dependencies = [ + "winapi-util", +] + +[[package]] +name = "scopeguard" +version = "1.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49" + +[[package]] +name = "serde" +version = "1.0.188" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "cf9e0fcba69a370eed61bcf2b728575f726b50b55cba78064753d708ddc7549e" +dependencies = [ + "serde_derive", +] + +[[package]] +name = "serde_cbor" +version = "0.11.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2bef2ebfde456fb76bbcf9f59315333decc4fda0b2b44b420243c11e0f5ec1f5" +dependencies = [ + "half", + "serde", +] + +[[package]] +name = "serde_derive" +version = "1.0.188" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4eca7ac642d82aa35b60049a6eccb4be6be75e599bd2e9adb5f875a737654af2" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + +[[package]] +name = "serde_json" +version = "1.0.107" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "6b420ce6e3d8bd882e9b243c6eed35dbc9a6110c9769e74b584e0d68d1f20c65" +dependencies = [ + "itoa", + "ryu", + "serde", +] + +[[package]] +name = "syn" +version = "2.0.37" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7303ef2c05cd654186cb250d29049a24840ca25d2747c25c0381c8d9e2f582e8" +dependencies = [ + "proc-macro2", + "quote", + "unicode-ident", +] + +[[package]] +name = "textwrap" +version = "0.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060" +dependencies = [ + "unicode-width", +] + +[[package]] +name = "tinytemplate" +version = "1.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "be4d6b5f19ff7664e8c98d03e2139cb510db9b0a60b55f8e8709b689d939b6bc" +dependencies = [ + "serde", + "serde_json", +] + +[[package]] +name = "unicode-ident" +version = "1.0.12" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b" + +[[package]] +name = "unicode-width" +version = "0.1.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b" + +[[package]] +name = "walkdir" +version = "2.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d71d857dc86794ca4c280d616f7da00d2dbfd8cd788846559a6813e6aa4b54ee" +dependencies = [ + "same-file", + "winapi-util", +] + +[[package]] +name = "wasm-bindgen" +version = "0.2.87" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7706a72ab36d8cb1f80ffbf0e071533974a60d0a308d01a5d0375bf60499a342" +dependencies = [ + "cfg-if", + "wasm-bindgen-macro", +] + +[[package]] +name = "wasm-bindgen-backend" +version = "0.2.87" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5ef2b6d3c510e9625e5fe6f509ab07d66a760f0885d858736483c32ed7809abd" +dependencies = [ + "bumpalo", + "log", + "once_cell", + "proc-macro2", + "quote", + "syn", + "wasm-bindgen-shared", +] + +[[package]] +name = "wasm-bindgen-macro" +version = "0.2.87" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dee495e55982a3bd48105a7b947fd2a9b4a8ae3010041b9e0faab3f9cd028f1d" +dependencies = [ + "quote", + "wasm-bindgen-macro-support", +] + +[[package]] +name = "wasm-bindgen-macro-support" +version = "0.2.87" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b" +dependencies = [ + "proc-macro2", + "quote", + "syn", + "wasm-bindgen-backend", + "wasm-bindgen-shared", +] + +[[package]] +name = "wasm-bindgen-shared" +version = "0.2.87" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ca6ad05a4870b2bf5fe995117d3728437bd27d7cd5f06f13c17443ef369775a1" + +[[package]] +name = "web-sys" +version = "0.3.64" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9b85cbef8c220a6abc02aefd892dfc0fc23afb1c6a426316ec33253a3877249b" +dependencies = [ + "js-sys", + "wasm-bindgen", +] + +[[package]] +name = "winapi" +version = "0.3.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419" +dependencies = [ + "winapi-i686-pc-windows-gnu", + "winapi-x86_64-pc-windows-gnu", +] + +[[package]] +name = "winapi-i686-pc-windows-gnu" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" + +[[package]] +name = "winapi-util" +version = "0.1.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178" +dependencies = [ + "winapi", +] + +[[package]] +name = "winapi-x86_64-pc-windows-gnu" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" diff --git a/third_party/rust/audio-mixer/Cargo.toml b/third_party/rust/audio-mixer/Cargo.toml new file mode 100644 index 0000000000..92293f25db --- /dev/null +++ b/third_party/rust/audio-mixer/Cargo.toml @@ -0,0 +1,42 @@ +# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO +# +# When uploading crates to the registry Cargo will automatically +# "normalize" Cargo.toml files for maximal compatibility +# with all versions of Cargo and also rewrite `path` dependencies +# to registry (e.g., crates.io) dependencies. +# +# If you are reading this file be aware that the original Cargo.toml +# will likely look very different (and much more reasonable). +# See Cargo.toml.orig for the original contents. + +[package] +edition = "2018" +name = "audio-mixer" +version = "0.1.3" +authors = ["Chun-Min Chang <chun.m.chang@gmail.com>"] +description = "Mixing audio by the input and output channel layout" +readme = "README.md" +keywords = [ + "audio", + "mixer", + "mixing", +] +categories = ["multimedia::audio"] +license = "MPL-2.0" +repository = "https://github.com/mozilla/audio-mixer" + +[[bench]] +name = "benchmark" +harness = false + +[dependencies.bitflags] +version = "1.3" + +[dev-dependencies.criterion] +version = "0.3" + +[dev-dependencies.float-cmp] +version = "0.6" + +[badges.travis-ci] +repository = "mozilla/audio-mixer" diff --git a/third_party/rust/audio-mixer/LICENSE b/third_party/rust/audio-mixer/LICENSE new file mode 100644 index 0000000000..a612ad9813 --- /dev/null +++ b/third_party/rust/audio-mixer/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/third_party/rust/audio-mixer/README.md b/third_party/rust/audio-mixer/README.md new file mode 100644 index 0000000000..c8a649e07d --- /dev/null +++ b/third_party/rust/audio-mixer/README.md @@ -0,0 +1,39 @@ +# Audio Mixer + +[](https://circleci.com/gh/mozilla/audio-mixer) +[](https://github.com/mozilla/audio-mixer/actions/workflows/test.yml) + +Mixing audio data from any input channel layout to any output channel layout, +in a *matrix-multiplication* form. + +``` +output channel #1 ▸ │ Silence │ │ 0, 0, 0, 0 │ │ FrontRight │ ◂ input channel #1 +output channel #2 ▸ │ FrontRight │ = │ R, C, 0, F │ x │ FrontCenter │ ◂ input channel #2 +output channel #3 ▸ │ FrontLeft │ │ 0, C, L, F │ │ FrontLeft │ ◂ input channel #3 + ▴ ▴ │ LowFrequency │ ◂ input channel #4 + ┊ ┊ ▴ + ┊ ┊ ┊ + out_audio mixing matrix m in_audio +``` + +For example, the above means there are 3 output channels and 4 input channels. +The order of output channels is _Silence, FrontRight, and FrontLeft_. +The order of input channels is _FrontRight, FrontCenter, FrontLeft, LowFrequency_. + +So the output data in the _channel #2_ will be: +``` + +Output data of ch #2 (FrontRight) = + R x input channel #1 (FrontRight) + + C x input channel #2 (FrontCenter) + + 0 x input channel #3 (FrontLeft) + + F x input channel #4 (LowFrequency) +``` + +where the _C, F, L, R_ are mixing coefficients. +The _Silence_ channel is a unused channel in the output device, +so its channel data will always be zero. + +## License + +MPL-2 diff --git a/third_party/rust/audio-mixer/benches/benchmark.rs b/third_party/rust/audio-mixer/benches/benchmark.rs new file mode 100644 index 0000000000..11c47e55c7 --- /dev/null +++ b/third_party/rust/audio-mixer/benches/benchmark.rs @@ -0,0 +1,95 @@ +use audio_mixer::{Channel, Mixer}; +use criterion::{black_box, criterion_group, criterion_main, Criterion}; + +use std::any::{Any, TypeId}; + +fn criterion_benchmark(c: &mut Criterion) { + let frames = 512; + c.bench_function("downmix_f32", |b| { + b.iter(|| downmix::<f32>(black_box(frames))) + }); + c.bench_function("downmix_i16", |b| { + b.iter(|| downmix::<i16>(black_box(frames))) + }); + c.bench_function("upmix_f32", |b| b.iter(|| upmix::<f32>(black_box(frames)))); + c.bench_function("upmix_i16", |b| b.iter(|| upmix::<i16>(black_box(frames)))); +} + +fn downmix<T>(frames: usize) +where + T: Clone + Default + From<u8> + ?Sized + Any, +{ + // Downmix from 5.1 to stereo. + let input_channels = [ + Channel::FrontLeft, + Channel::FrontRight, + Channel::FrontCenter, + Channel::LowFrequency, + Channel::BackLeft, + Channel::BackRight, + ]; + let output_channels = [Channel::FrontLeft, Channel::FrontRight]; + mix::<T>(&input_channels, &output_channels, frames); +} + +fn upmix<T>(frames: usize) +where + T: Clone + Default + From<u8> + ?Sized + Any, +{ + // upmix from mono to stereo. + let input_channels = [Channel::FrontCenter]; + let output_channels = [Channel::FrontLeft, Channel::FrontRight]; + mix::<T>(&input_channels, &output_channels, frames); +} + +fn mix<T>(input_channels: &[Channel], output_channels: &[Channel], frames: usize) +where + T: Clone + Default + From<u8> + ?Sized + Any, +{ + if TypeId::of::<T>() == TypeId::of::<f32>() { + let (input_buffer, mut output_buffer) = create_buffers::<f32>( + input_channels.len() * frames, + output_channels.len() * frames, + ); + let mut in_buf = input_buffer.chunks(input_channels.len()); + let mut out_buf = output_buffer.chunks_mut(output_channels.len()); + let mixer = Mixer::<f32>::new(input_channels, output_channels); + for _ in 0..frames { + mixer.mix(in_buf.next().unwrap(), out_buf.next().unwrap()); + } + } else if TypeId::of::<T>() == TypeId::of::<i16>() { + let (input_buffer, mut output_buffer) = create_buffers::<i16>( + input_channels.len() * frames, + output_channels.len() * frames, + ); + let mut in_buf = input_buffer.chunks(input_channels.len()); + let mut out_buf = output_buffer.chunks_mut(output_channels.len()); + let mixer = Mixer::<i16>::new(input_channels, output_channels); + for _ in 0..frames { + mixer.mix(in_buf.next().unwrap(), out_buf.next().unwrap()); + } + } else { + panic!("Unsupport type"); + } +} + +fn create_buffers<T: Clone + Default + From<u8>>( + input_size: usize, + output_size: usize, +) -> (Vec<T>, Vec<T>) { + let mut input_buffer = default_buffer::<T>(input_size); + for (i, data) in input_buffer.iter_mut().enumerate() { + *data = T::from((i + 1) as u8); + } + let output_buffer = default_buffer::<T>(output_size); + (input_buffer, output_buffer) +} + +fn default_buffer<T: Clone + Default>(size: usize) -> Vec<T> { + let mut v = Vec::with_capacity(size); + v.resize(size, T::default()); + v +} + +criterion_group!(benches, criterion_benchmark); +criterion_main!(benches); diff --git a/third_party/rust/audio-mixer/install_rustfmt_clippy.sh b/third_party/rust/audio-mixer/install_rustfmt_clippy.sh new file mode 100644 index 0000000000..5063059c60 --- /dev/null +++ b/third_party/rust/audio-mixer/install_rustfmt_clippy.sh @@ -0,0 +1,17 @@ +# https://github.com/rust-lang/rustup-components-history/blob/master/README.md +# https://github.com/rust-lang/rust-clippy/blob/27acea0a1baac6cf3ac6debfdbce04f91e15d772/.travis.yml#L40-L46 +if ! rustup component add rustfmt; then + TARGET=$(rustc -Vv | awk '/host/{print $2}') + NIGHTLY=$(curl -s "https://rust-lang.github.io/rustup-components-history/${TARGET}/rustfmt") + curl -sSL "https://static.rust-lang.org/dist/${NIGHTLY}/rustfmt-nightly-${TARGET}.tar.xz" | \ + tar -xJf - --strip-components=3 -C ~/.cargo/bin + rm -rf ~/.cargo/bin/doc +fi + +if ! rustup component add clippy; then + TARGET=$(rustc -Vv | awk '/host/{print $2}') + NIGHTLY=$(curl -s "https://rust-lang.github.io/rustup-components-history/${TARGET}/clippy") + rustup default nightly-${NIGHTLY} + rustup component add rustfmt + rustup component add clippy +fi diff --git a/third_party/rust/audio-mixer/run_sanitizers.sh b/third_party/rust/audio-mixer/run_sanitizers.sh new file mode 100755 index 0000000000..7f73c2b9a0 --- /dev/null +++ b/third_party/rust/audio-mixer/run_sanitizers.sh @@ -0,0 +1,53 @@ +# The option `Z` is only accepted on the nightly compiler +# so changing to nightly toolchain by `rustup default nightly` is required. + +# See: https://github.com/rust-lang/rust/issues/39699 for more sanitizer support. + +toolchain="$(rustup default)" +echo -e "\nUse Rust toolchain: $toolchain" + +NIGHTLY_PREFIX="nightly" +if [ ! -z "${toolchain##$NIGHTLY_PREFIX*}" ]; then + echo -e "The sanitizer is only available on Rust Nightly only. Skip." + exit +fi + +if [ -z "${toolchain##*windows*}" ]; then + echo -e "The sanitizer doesn't work on Windows platform yet" + exit +fi + +# Display verbose backtrace for debugging if backtrace is unset +if [ -z "${RUST_BACKTRACE}" ]; then + export RUST_BACKTRACE=1 +fi +echo -e "RUST_BACKTRACE is set to ${RUST_BACKTRACE}\n" + +# {Address, Thread}Sanitizer cannot build with `criterion` crate, so `criterion` will be removed +# from the `Cargo.toml` temporarily during the sanitizer tests. +ORIGINAL_MANIFEST="Cargo_ori.toml" +mv Cargo.toml $ORIGINAL_MANIFEST +# Delete lines that contain a `criterion` from Cargo.toml. +sed '/criterion/d' $ORIGINAL_MANIFEST > Cargo.toml + +sanitizers=("address" "leak" "memory" "thread") +for san in "${sanitizers[@]}" +do + San="$(tr '[:lower:]' '[:upper:]' <<< ${san:0:1})${san:1}" + echo -e "\n\nRun ${San}Sanitizer\n------------------------------" + if [ $san = "leak" ]; then + echo -e "Skip the test that panics. Leaking memory when the program drops out abnormally is ok." + options="-- --Z unstable-options --exclude-should-panic" + fi + if [ $san = "memory" ]; then + if [ -z "${toolchain##*darwin*}" ]; then + echo -e "Skip the MemorySanitizer on Mac OS since it doesn't works with $toolchain" + else + echo -e "Skip the MemorySanitizer since it fails to run custom build command for bitflags crate" + fi + continue + fi + RUSTFLAGS="-Z sanitizer=${san}" cargo test $options +done + +mv $ORIGINAL_MANIFEST Cargo.toml
\ No newline at end of file diff --git a/third_party/rust/audio-mixer/run_tests.sh b/third_party/rust/audio-mixer/run_tests.sh new file mode 100755 index 0000000000..afb0f9ad04 --- /dev/null +++ b/third_party/rust/audio-mixer/run_tests.sh @@ -0,0 +1,17 @@ +# Bail out once getting an error. +set -e + +# Display verbose backtrace for debugging if backtrace is unset +if [ -z "${RUST_BACKTRACE}" ]; then + export RUST_BACKTRACE=1 +fi +echo -e "RUST_BACKTRACE is set to ${RUST_BACKTRACE}\n" + +# Format check +cargo fmt --all -- --check + +# Lints check +cargo clippy --all-targets --all-features -- -D warnings + +# Regular Tests +cargo test --verbose --all diff --git a/third_party/rust/audio-mixer/src/channel.rs b/third_party/rust/audio-mixer/src/channel.rs new file mode 100644 index 0000000000..b32936895e --- /dev/null +++ b/third_party/rust/audio-mixer/src/channel.rs @@ -0,0 +1,78 @@ +// The number of channels must be unique and start from 0. They will be treated as indice in the +// mixing matrix and used to form unique bitflags in the channel map, which is a bitmap. +#[derive(Copy, Clone, Debug, PartialEq)] +pub enum Channel { + FrontLeft = 0, + FrontRight = 1, + FrontCenter = 2, + LowFrequency = 3, + BackLeft = 4, + BackRight = 5, + FrontLeftOfCenter = 6, + FrontRightOfCenter = 7, + BackCenter = 8, + SideLeft = 9, + SideRight = 10, + TopCenter = 11, + TopFrontLeft = 12, + TopFrontCenter = 13, + TopFrontRight = 14, + TopBackLeft = 15, + TopBackCenter = 16, + TopBackRight = 17, + Silence = 18, +} + +impl Channel { + pub const fn number(self) -> usize { + self as usize + } + + pub const fn count() -> usize { + Channel::Silence as usize + 1 + } + + pub const fn bitmask(self) -> u32 { + 1 << self as usize + } +} + +bitflags! { + pub struct ChannelMap: u32 { + const FRONT_LEFT = Channel::FrontLeft.bitmask(); + const FRONT_RIGHT = Channel::FrontRight.bitmask(); + const FRONT_CENTER = Channel::FrontCenter.bitmask(); + const LOW_FREQUENCY = Channel::LowFrequency.bitmask(); + const BACK_LEFT = Channel::BackLeft.bitmask(); + const BACK_RIGHT = Channel::BackRight.bitmask(); + const FRONT_LEFT_OF_CENTER = Channel::FrontLeftOfCenter.bitmask(); + const FRONT_RIGHT_OF_CENTER = Channel::FrontRightOfCenter.bitmask(); + const BACK_CENTER = Channel::BackCenter.bitmask(); + const SIDE_LEFT = Channel::SideLeft.bitmask(); + const SIDE_RIGHT = Channel::SideRight.bitmask(); + const TOP_CENTER = Channel::TopCenter.bitmask(); + const TOP_FRONT_LEFT = Channel::TopFrontLeft.bitmask(); + const TOP_FRONT_CENTER = Channel::TopFrontCenter.bitmask(); + const TOP_FRONT_RIGHT = Channel::TopFrontRight.bitmask(); + const TOP_BACK_LEFT = Channel::TopBackLeft.bitmask(); + const TOP_BACK_CENTER = Channel::TopBackCenter.bitmask(); + const TOP_BACK_RIGHT = Channel::TopBackRight.bitmask(); + const SILENCE = Channel::Silence.bitmask(); + } +} + +// Avoid printing the following types in debugging context {:?} by declaring them in impl +// rather than bitflags! {} scope. +impl ChannelMap { + pub const FRONT_2: Self = Self::union(Self::FRONT_LEFT, Self::FRONT_RIGHT); + pub const BACK_2: Self = Self::union(Self::BACK_LEFT, Self::BACK_RIGHT); + pub const FRONT_2_OF_CENTER: Self = + Self::union(Self::FRONT_LEFT_OF_CENTER, Self::FRONT_RIGHT_OF_CENTER); + pub const SIDE_2: Self = Self::union(Self::SIDE_LEFT, Self::SIDE_RIGHT); +} + +impl From<Channel> for ChannelMap { + fn from(channel: Channel) -> Self { + ChannelMap::from_bits(channel.bitmask()).expect("convert an invalid channel") + } +} diff --git a/third_party/rust/audio-mixer/src/coefficient.rs b/third_party/rust/audio-mixer/src/coefficient.rs new file mode 100644 index 0000000000..799d50289c --- /dev/null +++ b/third_party/rust/audio-mixer/src/coefficient.rs @@ -0,0 +1,756 @@ +// The code is based from libcubeb's cubeb_mixer.cpp, +// which adapts the code from libswresample's rematrix.c + +use crate::channel::{Channel, ChannelMap}; + +use std::fmt::Debug; + +const CHANNELS: usize = Channel::count(); + +#[derive(Debug)] +enum Error { + DuplicateNonSilenceChannel, + AsymmetricChannels, +} + +#[derive(Debug)] +struct ChannelLayout { + channels: Vec<Channel>, + channel_map: ChannelMap, +} + +impl ChannelLayout { + fn new(channels: &[Channel]) -> Result<Self, Error> { + let channel_map = Self::get_channel_map(channels)?; + Ok(Self { + channels: channels.to_vec(), + channel_map, + }) + } + + // Except Silence channel, the duplicate channels are not allowed. + fn get_channel_map(channels: &[Channel]) -> Result<ChannelMap, Error> { + let mut map = ChannelMap::empty(); + for channel in channels { + let bitmask = ChannelMap::from(*channel); + if channel != &Channel::Silence && map.contains(bitmask) { + return Err(Error::DuplicateNonSilenceChannel); + } + map.insert(bitmask); + } + Ok(map) + } +} + +#[derive(Debug)] +pub struct Coefficient<T> +where + T: MixingCoefficient, + T::Coef: Copy, +{ + input_layout: ChannelLayout, + output_layout: ChannelLayout, + matrix: Vec<Vec<T::Coef>>, + would_overflow_from_coefficient_value: Option<bool>, // Only used when T is i16 +} + +impl<T> Coefficient<T> +where + T: MixingCoefficient, + T::Coef: Copy, +{ + // Given a M-channel input layout and a N-channel output layout, generate a NxM coefficients + // matrix m such that out_audio = m * in_audio, where in_audio, out_audio are Mx1, Nx1 matrix + // storing input and output audio data in their rows respectively. + // + // data in channel #1 ▸ │ Silence │ │ 0, 0, 0, 0 │ │ FrontRight │ ◂ data in channel #1 + // data in channel #2 ▸ │ FrontRight │ = │ 1, C, 0, L │ x │ FrontCenter │ ◂ data in channel #2 + // data in channel #3 ▸ │ FrontLeft │ │ 0, C, 1, L │ │ FrontLeft │ ◂ data in channel #3 + // ▴ ▴ │ LowFrequency │ ◂ data in channel #4 + // ┊ ┊ ▴ + // ┊ ┊ ┊ + // out_audio mixing matrix m in_audio + // + // The FrontLeft, FrontRight, ... etc label the data for front-left, front-right ... etc channel + // in both input and output audio data buffer. + // + // C and L are coefficients mixing input data from front-center channel and low-frequency channel + // to front-left and front-right. + // + // In math, the in_audio and out_audio should be a 2D-matrix with several rows containing only + // one column. However, the in_audio and out_audio are passed by 1-D matrix here for convenience. + pub fn create(input_channels: &[Channel], output_channels: &[Channel]) -> Self { + let input_layout = ChannelLayout::new(input_channels).expect("Invalid input layout"); + let output_layout = ChannelLayout::new(output_channels).expect("Invalid output layout"); + + let mixing_matrix = + Self::build_mixing_matrix(input_layout.channel_map, output_layout.channel_map) + .unwrap_or_else(|_| Self::get_basic_matrix()); + + let coefficient_matrix = Self::pick_coefficients( + &input_layout.channels, + &output_layout.channels, + &mixing_matrix, + ); + + let normalized_matrix = Self::normalize(T::max_coefficients_sum(), coefficient_matrix); + + let would_overflow = T::would_overflow_from_coefficient_value(&normalized_matrix); + + // Convert the type of the coefficients from f64 to T::Coef. + let matrix = normalized_matrix + .into_iter() + .map(|row| row.into_iter().map(T::coefficient_from_f64).collect()) + .collect(); + + Self { + input_layout, + output_layout, + matrix, + would_overflow_from_coefficient_value: would_overflow, + } + } + + // Return the coefficient for mixing input channel data into output channel. + pub fn get(&self, input: usize, output: usize) -> T::Coef { + assert!(output < self.matrix.len()); + assert!(input < self.matrix[output].len()); + self.matrix[output][input] // Perform copy so T::Coef must implement Copy. + } + + pub fn would_overflow_from_coefficient_value(&self) -> Option<bool> { + self.would_overflow_from_coefficient_value + } + + pub fn input_channels(&self) -> &[Channel] { + &self.input_layout.channels + } + + pub fn output_channels(&self) -> &[Channel] { + &self.output_layout.channels + } + + // Given audio input and output channel-maps, generate a CxC mixing coefficients matrix M, + // whose indice are ordered by the values defined in enum Channel, such that + // output_data(i) = Σ M[i][j] * input_data(j), for all j in [0, C), + // where i is in [0, C) and C is the number of channels defined in enum Channel, + // output_data and input_data are buffers containing data for channels that are also ordered + // by the values defined in enum Channel. + // + // │ FrontLeft │ │ 1, 0, ..., 0 │ │ FrontLeft │ ◂ data in front-left channel + // │ FrontRight │ │ 0, 1, ..., 0 │ │ FrontRight │ ◂ data in front-right channel + // │ FrontCenter │ = │ ........., 0 │ x │ FrontCenter │ ◂ data in front-center channel + // │ ........... │ │ ........., 0 | │ ........... │ ◂ ... + // │ Silence │ │ 0, 0, ..., 0 | │ Silence │ ◂ data in silence channel + // ▴ ▴ ▴ + // out_audio coef matrix M in_audio + // + // ChannelMap would be used as a hash table to check the existence of channels. + #[allow(clippy::cognitive_complexity)] + fn build_mixing_matrix( + input_map: ChannelMap, + output_map: ChannelMap, + ) -> Result<[[f64; CHANNELS]; CHANNELS], Error> { + // Mixing coefficients constants. + use std::f64::consts::FRAC_1_SQRT_2; + use std::f64::consts::SQRT_2; + const CENTER_MIX_LEVEL: f64 = FRAC_1_SQRT_2; + const SURROUND_MIX_LEVEL: f64 = FRAC_1_SQRT_2; + const LFE_MIX_LEVEL: f64 = 1.0; + + // The indices of channels in the mixing coefficients matrix. + const FRONT_LEFT: usize = Channel::FrontLeft.number(); + const FRONT_RIGHT: usize = Channel::FrontRight.number(); + const FRONT_CENTER: usize = Channel::FrontCenter.number(); + const LOW_FREQUENCY: usize = Channel::LowFrequency.number(); + const BACK_LEFT: usize = Channel::BackLeft.number(); + const BACK_RIGHT: usize = Channel::BackRight.number(); + const FRONT_LEFT_OF_CENTER: usize = Channel::FrontLeftOfCenter.number(); + const FRONT_RIGHT_OF_CENTER: usize = Channel::FrontRightOfCenter.number(); + const BACK_CENTER: usize = Channel::BackCenter.number(); + const SIDE_LEFT: usize = Channel::SideLeft.number(); + const SIDE_RIGHT: usize = Channel::SideRight.number(); + + // Return true if mixable channels are symmetric. + fn is_symmetric(map: ChannelMap) -> bool { + fn even(map: ChannelMap) -> bool { + map.bits().count_ones() % 2 == 0 + } + even(map & ChannelMap::FRONT_2) + && even(map & ChannelMap::BACK_2) + && even(map & ChannelMap::FRONT_2_OF_CENTER) + && even(map & ChannelMap::SIDE_2) + } + + if !is_symmetric(input_map) || !is_symmetric(output_map) { + return Err(Error::AsymmetricChannels); + } + + let mut matrix = Self::get_basic_matrix(); + + // Get input channels that are not in the output channels. + let unaccounted_input_map = input_map & !output_map; + + // When input has front-center but output has not, and output has front-stereo, + // mix input's front-center to output's front-stereo. + if unaccounted_input_map.contains(ChannelMap::FRONT_CENTER) + && output_map.contains(ChannelMap::FRONT_2) + { + let coefficient = if input_map.contains(ChannelMap::FRONT_2) { + CENTER_MIX_LEVEL + } else { + FRAC_1_SQRT_2 + }; + matrix[FRONT_LEFT][FRONT_CENTER] += coefficient; + matrix[FRONT_RIGHT][FRONT_CENTER] += coefficient; + } + + // When input has front-stereo but output has not, and output has front-center, + // mix input's front-stereo to output's front-center. + if unaccounted_input_map.contains(ChannelMap::FRONT_2) + && output_map.contains(ChannelMap::FRONT_CENTER) + { + matrix[FRONT_CENTER][FRONT_LEFT] += FRAC_1_SQRT_2; + matrix[FRONT_CENTER][FRONT_RIGHT] += FRAC_1_SQRT_2; + if input_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][FRONT_CENTER] = CENTER_MIX_LEVEL * SQRT_2; + } + } + + // When input has back-center but output has not, + if unaccounted_input_map.contains(ChannelMap::BACK_CENTER) { + // if output has back-stereo, mix input's back-center to output's back-stereo. + if output_map.contains(ChannelMap::BACK_2) { + matrix[BACK_LEFT][BACK_CENTER] += FRAC_1_SQRT_2; + matrix[BACK_RIGHT][BACK_CENTER] += FRAC_1_SQRT_2; + // or if output has side-stereo, mix input's back-center to output's side-stereo. + } else if output_map.contains(ChannelMap::SIDE_2) { + matrix[SIDE_LEFT][BACK_CENTER] += FRAC_1_SQRT_2; + matrix[SIDE_RIGHT][BACK_CENTER] += FRAC_1_SQRT_2; + // or if output has front-stereo, mix input's back-center to output's front-stereo. + } else if output_map.contains(ChannelMap::FRONT_2) { + matrix[FRONT_LEFT][BACK_CENTER] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + matrix[FRONT_RIGHT][BACK_CENTER] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + // or if output has front-center, mix input's back-center to output's front-center. + } else if output_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][BACK_CENTER] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + } + } + + // When input has back-stereo but output has not, + if unaccounted_input_map.contains(ChannelMap::BACK_2) { + // if output has back-center, mix input's back-stereo to output's back-center. + if output_map.contains(ChannelMap::BACK_CENTER) { + matrix[BACK_CENTER][BACK_LEFT] += FRAC_1_SQRT_2; + matrix[BACK_CENTER][BACK_RIGHT] += FRAC_1_SQRT_2; + // or if output has side-stereo, mix input's back-stereo to output's side-stereo. + } else if output_map.contains(ChannelMap::SIDE_2) { + let coefficient = if input_map.contains(ChannelMap::SIDE_2) { + FRAC_1_SQRT_2 + } else { + 1.0 + }; + matrix[SIDE_LEFT][BACK_LEFT] += coefficient; + matrix[SIDE_RIGHT][BACK_RIGHT] += coefficient; + // or if output has front-stereo, mix input's back-stereo to output's side-stereo. + } else if output_map.contains(ChannelMap::FRONT_2) { + matrix[FRONT_LEFT][BACK_LEFT] += SURROUND_MIX_LEVEL; + matrix[FRONT_RIGHT][BACK_RIGHT] += SURROUND_MIX_LEVEL; + // or if output has front-center, mix input's back-stereo to output's front-center. + } else if output_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][BACK_LEFT] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + matrix[FRONT_CENTER][BACK_RIGHT] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + } + } + + // When input has side-stereo but output has not, + if unaccounted_input_map.contains(ChannelMap::SIDE_2) { + // if output has back-stereo, mix input's side-stereo to output's back-stereo. + if output_map.contains(ChannelMap::BACK_2) { + let coefficient = if input_map.contains(ChannelMap::BACK_2) { + FRAC_1_SQRT_2 + } else { + 1.0 + }; + matrix[BACK_LEFT][SIDE_LEFT] += coefficient; + matrix[BACK_RIGHT][SIDE_RIGHT] += coefficient; + // or if output has back-center, mix input's side-stereo to output's back-center. + } else if output_map.contains(ChannelMap::BACK_CENTER) { + matrix[BACK_CENTER][SIDE_LEFT] += FRAC_1_SQRT_2; + matrix[BACK_CENTER][SIDE_RIGHT] += FRAC_1_SQRT_2; + // or if output has front-stereo, mix input's side-stereo to output's front-stereo. + } else if output_map.contains(ChannelMap::FRONT_2) { + matrix[FRONT_LEFT][SIDE_LEFT] += SURROUND_MIX_LEVEL; + matrix[FRONT_RIGHT][SIDE_RIGHT] += SURROUND_MIX_LEVEL; + // or if output has front-center, mix input's side-stereo to output's front-center. + } else if output_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][SIDE_LEFT] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + matrix[FRONT_CENTER][SIDE_RIGHT] += SURROUND_MIX_LEVEL * FRAC_1_SQRT_2; + } + } + + // When input has front-stereo-of-center but output has not, + if unaccounted_input_map.contains(ChannelMap::FRONT_2_OF_CENTER) { + // if output has front-stereo, mix input's front-stereo-of-center to output's front-stereo. + if output_map.contains(ChannelMap::FRONT_2) { + matrix[FRONT_LEFT][FRONT_LEFT_OF_CENTER] += 1.0; + matrix[FRONT_RIGHT][FRONT_RIGHT_OF_CENTER] += 1.0; + // or if output has front-center, mix input's front-stereo-of-center to output's front-center. + } else if output_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][FRONT_LEFT_OF_CENTER] += FRAC_1_SQRT_2; + matrix[FRONT_CENTER][FRONT_RIGHT_OF_CENTER] += FRAC_1_SQRT_2; + } + } + + // When input has low-frequency but output has not, + if unaccounted_input_map.contains(ChannelMap::LOW_FREQUENCY) { + // if output has front-center, mix input's low-frequency to output's front-center. + if output_map.contains(ChannelMap::FRONT_CENTER) { + matrix[FRONT_CENTER][LOW_FREQUENCY] += LFE_MIX_LEVEL; + // or if output has front-stereo, mix input's low-frequency to output's front-stereo. + } else if output_map.contains(ChannelMap::FRONT_2) { + matrix[FRONT_LEFT][LOW_FREQUENCY] += LFE_MIX_LEVEL * FRAC_1_SQRT_2; + matrix[FRONT_RIGHT][LOW_FREQUENCY] += LFE_MIX_LEVEL * FRAC_1_SQRT_2; + } + } + + Ok(matrix) + } + + // Return a CHANNELSxCHANNELS matrix M that is (CHANNELS-1)x(CHANNELS-1) identity matrix + // padding with one extra row and one column containing only zero values. The result would be: + // + // identity padding + // matrix column + // ▾ ▾ + // ┌┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┐ i ┐ + // │ 1, 0, 0, ..., 0 ┊, 0 │ ◂ 0 ┊ channel i + // │ 0, 1, 0, ..., 0 ┊, 0 │ ◂ 1 ┊ for + // │ 0, 0, 1, ..., 0 ┊, 0 │ ◂ 2 ┊ audio + // │ 0, 0, 0, ..., 0 ┊, 0 │ . ┊ output + // │ ............... ┊ │ . ┊ + // │ 0, 0, 0, ..., 1 ┊, 0 │ ◂ 16 ┊ + // ├┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┼┈┈┈┈┤ ◂ 17 ┊ + // │ 0, 0, 0, ..., 0 ┊, 0 │ ◂ padding row ◂ 18 ┊ + // ▴ ▴ ▴ .... ▴ ▴ ┘ + // j 0 1 2 .... 17 18 + // └┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┘ + // channel j for audio input + // + // Given an audio input buffer, in_audio, and an output buffer, out_audio, + // and their channel data are both ordered by the values defined in enum Channel. + // The generated matrix M makes sure that: + // + // out_audio(i) = in_audio(j), if i == j and both i, j are non-silence channel + // = 0, if i != j or i, j are silence channel + // + // │ FrontLeft │ │ FrontLeft │ ◂ data in front-left channel + // │ FrontRight │ │ FrontRight │ ◂ data in front-right channel + // │ FrontCenter │ = M x │ FrontCenter │ ◂ data in front-center channel + // │ ........... │ │ ........... │ ◂ ... + // │ Silence │ │ Silence │ ◂ data in silence channel + // ▴ ▴ + // out_audio in_audio + // + // That is, + // 1. If the input-channel is silence, it won't be mixed into any channel. + // 2. If the output-channel is silence, its output-channel data will be zero (silence). + // 3. If input-channel j is different from output-channel i, audio data in input channel j + // won't be mixed into the audio output data in channel i + // 4. If input-channel j is same as output-channel i, audio data in input channel j will be + // copied to audio output data in channel i + // + fn get_basic_matrix() -> [[f64; CHANNELS]; CHANNELS] { + const SILENCE: usize = Channel::Silence.number(); + let mut matrix = [[0.0; CHANNELS]; CHANNELS]; + for (i, row) in matrix.iter_mut().enumerate() { + if i != SILENCE { + row[i] = 1.0; + } + } + matrix + } + + // Given is an CHANNELSxCHANNELS mixing matrix whose indice are ordered by the values defined + // in enum Channel, and the channel orders of M-channel input and N-channel output, generate a + // mixing matrix m such that output_data(i) = Σ m[i][j] * input_data(j), for all j in [0, M), + // where i is in [0, N) and {input/output}_data(k) means the data of the number k channel in + // the input/output buffer. + fn pick_coefficients( + input_channels: &[Channel], + output_channels: &[Channel], + source: &[[f64; CHANNELS]; CHANNELS], + ) -> Vec<Vec<f64>> { + let mut matrix = Vec::with_capacity(output_channels.len()); + for output_channel in output_channels { + let output_channel_index = (*output_channel).number(); + let mut coefficients = Vec::with_capacity(input_channels.len()); + for input_channel in input_channels { + let input_channel_index = (*input_channel).number(); + coefficients.push(source[output_channel_index][input_channel_index]); + } + matrix.push(coefficients); + } + matrix + } + + fn normalize(max_coefficients_sum: f64, mut coefficients: Vec<Vec<f64>>) -> Vec<Vec<f64>> { + let mut max_sum: f64 = 0.0; + for coefs in &coefficients { + max_sum = max_sum.max(coefs.iter().sum()); + } + if max_sum != 0.0 && max_sum > max_coefficients_sum { + max_sum /= max_coefficients_sum; + for coefs in &mut coefficients { + for coef in coefs { + *coef /= max_sum; + } + } + } + coefficients + } +} + +pub trait MixingCoefficient { + type Coef; + + // TODO: These should be private. + fn max_coefficients_sum() -> f64; // Used for normalizing. + fn coefficient_from_f64(value: f64) -> Self::Coef; + // Precheck if overflow occurs when converting value from Self::Coef type to Self type. + fn would_overflow_from_coefficient_value(coefficient: &[Vec<f64>]) -> Option<bool>; + + // Convert f32 (Self) -> f32 (Self::Coef) or i16 (Self) -> i32 (Self::Coef) + #[allow(clippy::wrong_self_convention)] + fn to_coefficient_value(value: Self) -> Self::Coef; + fn from_coefficient_value(value: Self::Coef, would_overflow: Option<bool>) -> Self; +} + +impl MixingCoefficient for f32 { + type Coef = f32; + + fn max_coefficients_sum() -> f64 { + f64::from(std::i32::MAX) + } + + fn coefficient_from_f64(value: f64) -> Self::Coef { + value as Self::Coef + } + + fn would_overflow_from_coefficient_value(_coefficient: &[Vec<f64>]) -> Option<bool> { + None + } + + fn to_coefficient_value(value: Self) -> Self::Coef { + value + } + + fn from_coefficient_value(value: Self::Coef, would_overflow: Option<bool>) -> Self { + assert!(would_overflow.is_none()); + value + } +} + +impl MixingCoefficient for i16 { + type Coef = i32; + + fn max_coefficients_sum() -> f64 { + 1.0 + } + + fn coefficient_from_f64(value: f64) -> Self::Coef { + (value * f64::from(1 << 15)).round() as Self::Coef + } + + fn would_overflow_from_coefficient_value(coefficient: &[Vec<f64>]) -> Option<bool> { + let mut max_sum: Self::Coef = 0; + for row in coefficient { + let mut sum: Self::Coef = 0; + let mut rem: f64 = 0.0; + for coef in row { + let target = coef * f64::from(1 << 15) + rem; + let value = target.round() as Self::Coef; + rem += target - target.round(); + sum += value.abs(); + } + max_sum = max_sum.max(sum); + } + Some(max_sum > (1 << 15)) + } + + fn to_coefficient_value(value: Self) -> Self::Coef { + Self::Coef::from(value) + } + + fn from_coefficient_value(value: Self::Coef, would_overflow: Option<bool>) -> Self { + use std::convert::TryFrom; + let would_overflow = would_overflow.expect("would_overflow must have value for i16 type"); + let mut converted = (value + (1 << 14)) >> 15; + // clip the signed integer value into the -32768,32767 range. + if would_overflow && ((converted + 0x8000) & !0xFFFF != 0) { + converted = (converted >> 31) ^ 0x7FFF; + } + Self::try_from(converted).expect("Cannot convert coefficient from i32 to i16") + } +} + +#[cfg(test)] +mod test { + use super::*; + + #[test] + fn test_create_f32() { + test_create::<f32>(MixDirection::Downmix); + test_create::<f32>(MixDirection::Upmix); + } + + #[test] + fn test_create_i16() { + test_create::<i16>(MixDirection::Downmix); + test_create::<i16>(MixDirection::Upmix); + } + + fn test_create<T>(direction: MixDirection) + where + T: MixingCoefficient, + T::Coef: Copy + Debug, + { + let (input_channels, output_channels) = get_test_channels(direction); + let coefficient = Coefficient::<T>::create(&input_channels, &output_channels); + println!( + "{:?} = {:?} * {:?}", + output_channels, coefficient.matrix, input_channels + ); + } + + enum MixDirection { + Downmix, + Upmix, + } + fn get_test_channels(direction: MixDirection) -> (Vec<Channel>, Vec<Channel>) { + let more = vec![ + Channel::Silence, + Channel::FrontRight, + Channel::FrontLeft, + Channel::LowFrequency, + Channel::Silence, + Channel::BackCenter, + ]; + let less = vec![ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + ]; + match direction { + MixDirection::Downmix => (more, less), + MixDirection::Upmix => (less, more), + } + } + + #[test] + fn test_create_with_duplicate_silience_channels_f32() { + test_create_with_duplicate_silience_channels::<f32>() + } + + #[test] + fn test_create_with_duplicate_silience_channels_i16() { + test_create_with_duplicate_silience_channels::<i16>() + } + + #[test] + #[should_panic] + fn test_create_with_duplicate_input_channels_f32() { + test_create_with_duplicate_input_channels::<f32>() + } + + #[test] + #[should_panic] + fn test_create_with_duplicate_input_channels_i16() { + test_create_with_duplicate_input_channels::<i16>() + } + + #[test] + #[should_panic] + fn test_create_with_duplicate_output_channels_f32() { + test_create_with_duplicate_output_channels::<f32>() + } + + #[test] + #[should_panic] + fn test_create_with_duplicate_output_channels_i16() { + test_create_with_duplicate_output_channels::<i16>() + } + + fn test_create_with_duplicate_silience_channels<T>() + where + T: MixingCoefficient, + T::Coef: Copy, + { + // Duplicate of Silence channels is allowed on both input side and output side. + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + Channel::Silence, + ]; + let output_channels = [ + Channel::Silence, + Channel::FrontRight, + Channel::FrontLeft, + Channel::BackCenter, + Channel::Silence, + ]; + let _ = Coefficient::<T>::create(&input_channels, &output_channels); + } + + fn test_create_with_duplicate_input_channels<T>() + where + T: MixingCoefficient, + T::Coef: Copy, + { + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontLeft, + Channel::FrontCenter, + ]; + let output_channels = [ + Channel::Silence, + Channel::FrontRight, + Channel::FrontLeft, + Channel::FrontCenter, + Channel::BackCenter, + ]; + let _ = Coefficient::<T>::create(&input_channels, &output_channels); + } + + fn test_create_with_duplicate_output_channels<T>() + where + T: MixingCoefficient, + T::Coef: Copy, + { + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + ]; + let output_channels = [ + Channel::Silence, + Channel::FrontRight, + Channel::FrontLeft, + Channel::FrontCenter, + Channel::FrontCenter, + Channel::BackCenter, + ]; + let _ = Coefficient::<T>::create(&input_channels, &output_channels); + } + + #[test] + fn test_get_redirect_matrix_f32() { + test_get_redirect_matrix::<f32>(); + } + + #[test] + fn test_get_redirect_matrix_i16() { + test_get_redirect_matrix::<i16>(); + } + + fn test_get_redirect_matrix<T>() + where + T: MixingCoefficient, + T::Coef: Copy + Debug + PartialEq, + { + // Create a matrix that only redirect the channels from input side to output side, + // without mixing input audio data to output audio data. + fn compute_redirect_matrix<T>( + input_channels: &[Channel], + output_channels: &[Channel], + ) -> Vec<Vec<T::Coef>> + where + T: MixingCoefficient, + { + let mut matrix = Vec::with_capacity(output_channels.len()); + for output_channel in output_channels { + let mut row = Vec::with_capacity(input_channels.len()); + for input_channel in input_channels { + row.push( + if input_channel != output_channel + || input_channel == &Channel::Silence + || output_channel == &Channel::Silence + { + 0.0 + } else { + 1.0 + }, + ); + } + matrix.push(row); + } + + // Convert the type of the coefficients from f64 to T::Coef. + matrix + .into_iter() + .map(|row| row.into_iter().map(T::coefficient_from_f64).collect()) + .collect() + } + + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + ]; + let output_channels = [ + Channel::Silence, + Channel::FrontLeft, + Channel::Silence, + Channel::FrontCenter, + Channel::BackCenter, + ]; + + // Get a redirect matrix since the output layout is asymmetric. + let coefficient = Coefficient::<T>::create(&input_channels, &output_channels); + + let expected = compute_redirect_matrix::<T>(&input_channels, &output_channels); + assert_eq!(coefficient.matrix, expected); + + println!( + "{:?} = {:?} * {:?}", + output_channels, coefficient.matrix, input_channels + ); + } + + #[test] + fn test_normalize() { + use float_cmp::approx_eq; + + let m = vec![ + vec![1.0_f64, 2.0_f64, 3.0_f64], + vec![4.0_f64, 6.0_f64, 10.0_f64], + ]; + + let mut max_row_sum: f64 = std::f64::MIN; + for row in &m { + max_row_sum = max_row_sum.max(row.iter().sum()); + } + + // Type of Coefficient doesn't matter here. + // If the first argument of normalize >= max_row_sum, do nothing. + let n = Coefficient::<f32>::normalize(max_row_sum, m.clone()); + assert_eq!(n, m); + + // If the first argument of normalize < max_row_sum, do normalizing. + let smaller_max = max_row_sum - 0.5_f64; + assert!(smaller_max > 0.0_f64); + let n = Coefficient::<f32>::normalize(smaller_max, m); + let mut max_row_sum: f64 = std::f64::MIN; + for row in &n { + max_row_sum = max_row_sum.max(row.iter().sum()); + assert!(row.iter().sum::<f64>() <= smaller_max); + } + assert!(approx_eq!(f64, smaller_max, max_row_sum)); + } +} diff --git a/third_party/rust/audio-mixer/src/lib.rs b/third_party/rust/audio-mixer/src/lib.rs new file mode 100644 index 0000000000..170d5952bc --- /dev/null +++ b/third_party/rust/audio-mixer/src/lib.rs @@ -0,0 +1,81 @@ +#[macro_use] +extern crate bitflags; + +mod channel; +mod coefficient; + +// Export Channel outside. +pub use channel::Channel; +use coefficient::{Coefficient, MixingCoefficient}; + +use std::default::Default; +use std::fmt::Debug; +use std::ops::{AddAssign, Mul}; + +// A mixer mixing M-channel input data to N-channel output data. +// T::Coef is an associated type defined in MixingCoefficient, which indicates the type of the +// mixing coefficient that would be used for type T. When T is f32, the T::Coef is f32. When T +// is i16, the T::Coef is i32. When mixing data, a temporary variable with type T::Coef would be +// created to hold the mixing result. Since the type of input and output audio data is T, +// the methods provided from MixingCoefficient trait would be used to convert the value between +// type T and T::Coef. +#[derive(Debug)] +pub struct Mixer<T> +where + T: Copy + Debug + MixingCoefficient, + T::Coef: AddAssign + Copy + Debug + Default + Mul<T::Coef, Output = T::Coef>, +{ + coefficient: Coefficient<T>, +} + +impl<T> Mixer<T> +where + T: Copy + Debug + MixingCoefficient, + T::Coef: AddAssign + Copy + Debug + Default + Mul<T::Coef, Output = T::Coef>, +{ + pub fn new(input_channels: &[Channel], output_channels: &[Channel]) -> Self { + Self { + coefficient: Coefficient::create(input_channels, output_channels), + } + } + + // To mix M-channel audio input data to N-channel output data, the data in output-channel i + // is the sum of product of data in input-channel j and the coefficient for mixing from + // input-channel j to output-channel i, for all j in M channels. That is, + // output_data(i) = Σ coefficient(j, i) * input_data(j), for all j in [0, M), + // where i is in [0, N) and coefficient is a function returning mixing coefficient from + // input channel j to output channel i. + pub fn mix(&self, input_buffer: &[T], output_buffer: &mut [T]) { + assert_eq!( + input_buffer.len(), + self.input_channels().len(), + "input slice must have the same size as the input channel's one." + ); + assert_eq!( + output_buffer.len(), + self.output_channels().len(), + "output slice must have the same size as the output channel's one." + ); + for (i, output) in output_buffer.iter_mut().enumerate() { + // T must implement Default that returns a zero value from default(). + let mut value = T::Coef::default(); // Create a zero value. + for (j, input) in input_buffer.iter().enumerate() { + // T::Coef needs to implement `AddAssign` and `Mul` to make `+=` and `*` work. + // T needs to implement `Copy` so `*input` can be copied. + value += self.coefficient.get(j, i) * T::to_coefficient_value(*input); + } + *output = T::from_coefficient_value( + value, + self.coefficient.would_overflow_from_coefficient_value(), + ); + } + } + + pub fn input_channels(&self) -> &[Channel] { + self.coefficient.input_channels() + } + + pub fn output_channels(&self) -> &[Channel] { + self.coefficient.output_channels() + } +} diff --git a/third_party/rust/audio-mixer/src/main.rs b/third_party/rust/audio-mixer/src/main.rs new file mode 100644 index 0000000000..938867f5e8 --- /dev/null +++ b/third_party/rust/audio-mixer/src/main.rs @@ -0,0 +1,50 @@ +extern crate audio_mixer; +use audio_mixer::{Channel, Mixer}; + +fn main() { + // f32 + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + ]; + let output_channels = [Channel::FrontLeft, Channel::FrontRight]; + + let mut input_buffer = vec![0.0; input_channels.len()]; + for (i, data) in input_buffer.iter_mut().enumerate() { + *data = (i + 1) as f32; + } + let mut output_buffer = vec![0.0; output_channels.len()]; + + let mixer = Mixer::new(&input_channels, &output_channels); + + mixer.mix(input_buffer.as_slice(), output_buffer.as_mut_slice()); + println!("{:?} is mixed to {:?}", input_buffer, output_buffer); + + // i16 + let input_channels = [ + Channel::FrontLeft, + Channel::Silence, + Channel::FrontRight, + Channel::FrontCenter, + Channel::BackLeft, + Channel::SideRight, + Channel::LowFrequency, + Channel::SideLeft, + Channel::BackCenter, + Channel::BackRight, + ]; + let output_channels = [Channel::Silence, Channel::FrontRight, Channel::FrontLeft]; + + let mut input_buffer = vec![0; input_channels.len()]; + for (i, data) in input_buffer.iter_mut().enumerate() { + *data = (i + 0x7FFE) as i16; + } + let mut output_buffer = vec![0; output_channels.len()]; + + let mixer = Mixer::new(&input_channels, &output_channels); + + mixer.mix(input_buffer.as_slice(), output_buffer.as_mut_slice()); + println!("{:?} is mixed to {:?}", input_buffer, output_buffer); +} |