add dts extractor #61
This commit is contained in:
Curid
parent
320f208fc7
commit
d03baa5689
153
Cargo.lock
generated
153
Cargo.lock
generated
@ -127,7 +127,7 @@ checksum = "96cf8829f67d2eab0b2dfa42c5d0ef737e0724e4a82b01b3e292456202b19716"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -188,9 +188,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bitstream-io"
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version = "1.5.0"
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version = "1.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "97d524fdb78bf6dc6d2dc4c02043e4b4962ede0a17ae3e13f0ed211a7eda5897"
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checksum = "9d28070975aaf4ef1fd0bd1f29b739c06c2cdd9972e090617fb6dca3b2cb564e"
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[[package]]
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name = "bitvec"
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@ -391,7 +391,7 @@ dependencies = [
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"proc-macro-error",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -417,13 +417,17 @@ name = "client"
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version = "0.0.0"
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dependencies = [
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"anyhow",
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"bitstream-io",
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"bytes",
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"clap 4.1.4",
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"futures",
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"itertools",
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"log",
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"mylog",
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"pretty_assertions",
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"retina",
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"test-case",
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"thiserror",
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"tokio",
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"url",
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]
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@ -606,6 +610,16 @@ dependencies = [
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"subtle",
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]
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[[package]]
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name = "ctor"
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version = "0.1.26"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6d2301688392eb071b0bf1a37be05c469d3cc4dbbd95df672fe28ab021e6a096"
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dependencies = [
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"quote",
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"syn 1.0.98",
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]
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[[package]]
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name = "ctr"
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version = "0.6.0"
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@ -658,7 +672,7 @@ dependencies = [
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"proc-macro2",
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"quote",
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"strsim",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -669,7 +683,7 @@ checksum = "29b5acf0dea37a7f66f7b25d2c5e93fd46f8f6968b1a5d7a3e02e97768afc95a"
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dependencies = [
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"darling_core",
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"quote",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -696,7 +710,7 @@ dependencies = [
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"nom 6.1.2",
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"num-bigint",
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"num-traits",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -707,7 +721,7 @@ checksum = "c73af209b6a5dc8ca7cbaba720732304792cddc933cfea3d74509c2b1ef2f436"
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dependencies = [
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"num-bigint",
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"num-traits",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -754,7 +768,7 @@ dependencies = [
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"darling",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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@ -764,9 +778,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "58a94ace95092c5acb1e97a7e846b310cfbd499652f72297da7493f618a98d73"
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dependencies = [
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"derive_builder_core",
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"syn",
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"syn 1.0.98",
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]
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[[package]]
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name = "diff"
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version = "0.1.13"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
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[[package]]
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name = "digest"
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version = "0.9.0"
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@ -794,7 +814,7 @@ checksum = "3bf95dc3f046b9da4f2d51833c0d3547d8564ef6910f5c1ed130306a75b92886"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -981,7 +1001,7 @@ checksum = "33c1e13800337f4d4d7a316bf45a567dbcb6ffe087f16424852d97e97a91f512"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -1545,6 +1565,15 @@ version = "6.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9b7820b9daea5457c9f21c69448905d723fbd21136ccf521748f23fd49e723ee"
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[[package]]
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name = "output_vt100"
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version = "0.1.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "628223faebab4e3e40667ee0b2336d34a5b960ff60ea743ddfdbcf7770bcfb66"
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dependencies = [
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"winapi",
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]
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[[package]]
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name = "p256"
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version = "0.10.1"
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@ -1612,7 +1641,7 @@ checksum = "710faf75e1b33345361201d36d04e98ac1ed8909151a017ed384700836104c74"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -1701,6 +1730,18 @@ version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c6fa0831dd7cc608c38a5e323422a0077678fa5744aa2be4ad91c4ece8eec8d5"
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[[package]]
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name = "pretty_assertions"
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version = "1.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a25e9bcb20aa780fd0bb16b72403a9064d6b3f22f026946029acb941a50af755"
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dependencies = [
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"ctor",
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"diff",
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"output_vt100",
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"yansi",
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]
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[[package]]
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name = "proc-macro-error"
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version = "1.0.4"
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@ -1710,7 +1751,7 @@ dependencies = [
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"proc-macro-error-attr",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.98",
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"version_check",
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]
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@ -1727,18 +1768,18 @@ dependencies = [
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[[package]]
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name = "proc-macro2"
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version = "1.0.50"
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version = "1.0.53"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6ef7d57beacfaf2d8aee5937dab7b7f28de3cb8b1828479bb5de2a7106f2bae2"
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checksum = "ba466839c78239c09faf015484e5cc04860f88242cff4d03eb038f04b4699b73"
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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 = "1.0.20"
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version = "1.0.26"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
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checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
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dependencies = [
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"proc-macro2",
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]
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@ -1884,10 +1925,12 @@ dependencies = [
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"once_cell",
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"pin-project",
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"pretty-hex",
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"pretty_assertions",
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"rand",
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"rtsp-types",
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"sdp-types",
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"smallvec",
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"test-case",
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"thiserror",
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"time",
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"tokio",
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@ -2139,7 +2182,7 @@ checksum = "dc1d3230c1de7932af58ad8ffbe1d784bd55efd5a9d84ac24f69c72d83543dfb"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -2310,6 +2353,17 @@ dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "syn"
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version = "2.0.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5aad1363ed6d37b84299588d62d3a7d95b5a5c2d9aad5c85609fda12afaa1f40"
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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 = "synstructure"
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version = "0.12.6"
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@ -2318,7 +2372,7 @@ checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
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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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"syn 1.0.98",
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"unicode-xid",
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]
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@ -2337,6 +2391,41 @@ dependencies = [
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"winapi-util",
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]
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[[package]]
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name = "test-case"
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version = "3.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "679b019fb241da62cc449b33b224d19ebe1c6767b495569765115dd7f7f9fba4"
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dependencies = [
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"test-case-macros",
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]
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[[package]]
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name = "test-case-core"
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version = "3.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72dc21b5887f4032c4656502d085dc28f2afbb686f25f216472bb0526f4b1b88"
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dependencies = [
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"cfg-if",
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"proc-macro-error",
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"proc-macro2",
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"quote",
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"syn 1.0.98",
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]
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[[package]]
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name = "test-case-macros"
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version = "3.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f3786898e0be151a96f730fd529b0e8a10f5990fa2a7ea14e37ca27613c05190"
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dependencies = [
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"proc-macro-error",
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"proc-macro2",
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"quote",
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"syn 1.0.98",
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"test-case-core",
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]
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[[package]]
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name = "textwrap"
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version = "0.16.0"
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@ -2345,22 +2434,22 @@ checksum = "222a222a5bfe1bba4a77b45ec488a741b3cb8872e5e499451fd7d0129c9c7c3d"
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[[package]]
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name = "thiserror"
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version = "1.0.31"
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version = "1.0.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
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checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
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dependencies = [
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"thiserror-impl",
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]
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[[package]]
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name = "thiserror-impl"
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version = "1.0.31"
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version = "1.0.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
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checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
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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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"syn 2.0.10",
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]
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[[package]]
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@ -2427,7 +2516,7 @@ checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
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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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"syn 1.0.98",
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]
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[[package]]
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@ -2635,7 +2724,7 @@ dependencies = [
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"log",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.98",
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"wasm-bindgen-shared",
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]
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@ -2657,7 +2746,7 @@ checksum = "7d94ac45fcf608c1f45ef53e748d35660f168490c10b23704c7779ab8f5c3048"
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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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"syn 1.0.98",
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"wasm-bindgen-backend",
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"wasm-bindgen-shared",
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]
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@ -3095,6 +3184,12 @@ dependencies = [
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"thiserror",
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]
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[[package]]
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name = "yansi"
|
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version = "0.5.1"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
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[[package]]
|
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name = "yasna"
|
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version = "0.4.0"
|
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@ -3121,6 +3216,6 @@ checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
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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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"syn 1.0.98",
|
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"synstructure",
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]
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|
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@ -40,6 +40,8 @@ url = "2.2.1"
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[dev-dependencies]
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criterion = { version = "0.4.0", features = ["async_tokio"] }
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mylog = { git = "https://github.com/scottlamb/mylog" }
|
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pretty_assertions = "1.3.0"
|
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test-case = "3.0.0"
|
||||
tokio = { version = "1.5.0", features = ["io-util", "macros", "rt-multi-thread", "test-util"] }
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[profile.bench]
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@ -118,6 +118,7 @@ impl Timeline {
|
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Ok((
|
||||
Timestamp {
|
||||
timestamp,
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||||
dts: None,
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clock_rate: self.clock_rate,
|
||||
start,
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||||
},
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@ -805,6 +805,7 @@ mod tests {
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).unwrap();
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let timestamp = crate::Timestamp {
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timestamp: 42,
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||||
dts: None,
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||||
clock_rate: NonZeroU32::new(48_000).unwrap(),
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start: 0,
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};
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@ -1001,6 +1002,7 @@ mod tests {
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).unwrap();
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let timestamp = crate::Timestamp {
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timestamp: 42,
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||||
dts: None,
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||||
clock_rate: NonZeroU32::new(48_000).unwrap(),
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start: 0,
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};
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@ -1105,6 +1107,7 @@ mod tests {
|
||||
).unwrap();
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||||
let timestamp = crate::Timestamp {
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timestamp: 42,
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||||
dts: None,
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||||
clock_rate: NonZeroU32::new(48_000).unwrap(),
|
||||
start: 0,
|
||||
};
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||||
@ -1211,6 +1214,7 @@ mod tests {
|
||||
).unwrap();
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||||
let timestamp = crate::Timestamp {
|
||||
timestamp: 42,
|
||||
dts: None,
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||||
clock_rate: NonZeroU32::new(48_000).unwrap(),
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||||
start: 0,
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||||
};
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||||
@ -1320,6 +1324,7 @@ mod tests {
|
||||
).unwrap();
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||||
let timestamp = crate::Timestamp {
|
||||
timestamp: 42,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(48_000).unwrap(),
|
||||
start: 0,
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||||
};
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@ -3,6 +3,10 @@
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//! [H.264](https://www.itu.int/rec/T-REC-H.264-201906-I/en)-encoded video.
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||||
pub mod dts_extractor;
|
||||
pub mod emulation_prevention;
|
||||
pub mod sps;
|
||||
|
||||
use std::convert::TryFrom;
|
||||
use std::fmt::Write;
|
||||
|
||||
@ -11,6 +15,7 @@ use h264_reader::nal::{NalHeader, UnitType};
|
||||
use log::{debug, log_enabled, trace};
|
||||
|
||||
use crate::{
|
||||
codec::h264::{dts_extractor::DtsExtractor, sps::Sps},
|
||||
rtp::{ReceivedPacket, ReceivedPacketBuilder},
|
||||
Error, Timestamp,
|
||||
};
|
||||
@ -43,6 +48,9 @@ pub(crate) struct Depacketizer {
|
||||
/// In state `PreMark`, an entry for each NAL.
|
||||
/// Kept around (empty) in other states to re-use the backing allocation.
|
||||
nals: Vec<Nal>,
|
||||
|
||||
sps: Option<Sps>,
|
||||
dts_extractor: Option<DtsExtractor>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
@ -107,13 +115,16 @@ impl Depacketizer {
|
||||
));
|
||||
}
|
||||
|
||||
let parameters = match format_specific_params {
|
||||
None => None,
|
||||
let (parameters, sps) = match format_specific_params {
|
||||
None => (None, None),
|
||||
Some(fp) => match InternalParameters::parse_format_specific_params(fp) {
|
||||
Ok(p) => Some(p),
|
||||
Ok(p) => {
|
||||
let sps = Sps::deserialize(&p.sps_nal).map_err(|e| e.to_string())?;
|
||||
(Some(p), Some(sps))
|
||||
}
|
||||
Err(e) => {
|
||||
log::warn!("Ignoring bad H.264 format-specific-params {:?}: {}", fp, e);
|
||||
None
|
||||
(None, None)
|
||||
}
|
||||
},
|
||||
};
|
||||
@ -123,6 +134,8 @@ impl Depacketizer {
|
||||
pieces: Vec::new(),
|
||||
nals: Vec::new(),
|
||||
parameters,
|
||||
sps,
|
||||
dts_extractor: None,
|
||||
})
|
||||
}
|
||||
|
||||
@ -425,7 +438,11 @@ impl Depacketizer {
|
||||
}
|
||||
}
|
||||
|
||||
fn finalize_access_unit(&mut self, au: AccessUnit, reason: &str) -> Result<VideoFrame, String> {
|
||||
fn finalize_access_unit(
|
||||
&mut self,
|
||||
mut au: AccessUnit,
|
||||
reason: &str,
|
||||
) -> Result<VideoFrame, String> {
|
||||
let mut piece_idx = 0;
|
||||
let mut retained_len = 0usize;
|
||||
let mut is_random_access_point = false;
|
||||
@ -472,11 +489,23 @@ impl Depacketizer {
|
||||
}
|
||||
let mut data = Vec::with_capacity(retained_len);
|
||||
piece_idx = 0;
|
||||
|
||||
let mut nalus: Vec<Vec<u8>> = Vec::new();
|
||||
|
||||
for nal in &self.nals {
|
||||
let hdr: u8 = nal.hdr.into();
|
||||
let next_piece_idx = usize::try_from(nal.next_piece_idx).expect("u32 fits in usize");
|
||||
let nal_pieces = &self.pieces[piece_idx..next_piece_idx];
|
||||
|
||||
let mut nalu = Vec::new();
|
||||
nalu.push(hdr.to_owned());
|
||||
for piece in nal_pieces {
|
||||
nalu.extend_from_slice(&piece[..]);
|
||||
}
|
||||
nalus.push(nalu);
|
||||
|
||||
data.extend_from_slice(&nal.len.to_be_bytes()[..]);
|
||||
data.push(nal.hdr.into());
|
||||
data.push(hdr);
|
||||
let mut actual_len = 1;
|
||||
for piece in nal_pieces {
|
||||
data.extend_from_slice(&piece[..]);
|
||||
@ -488,6 +517,30 @@ impl Depacketizer {
|
||||
);
|
||||
piece_idx = next_piece_idx;
|
||||
}
|
||||
|
||||
if let Some(sps) = &self.sps {
|
||||
let pts = au.timestamp.timestamp();
|
||||
|
||||
// If first sync sample has been received.
|
||||
if let Some(dts_extractor) = &mut self.dts_extractor {
|
||||
au.timestamp.dts = Some(
|
||||
dts_extractor
|
||||
.extract(sps, &nalus, pts)
|
||||
.map_err(|e| e.to_string())?,
|
||||
);
|
||||
|
||||
// Skip samples silently until we find one with an IDR.
|
||||
} else if is_random_access_point {
|
||||
let mut dts_extractor = DtsExtractor::new();
|
||||
dts_extractor
|
||||
.extract(sps, &nalus, 0)
|
||||
.map_err(|e| e.to_string())?;
|
||||
self.dts_extractor = Some(dts_extractor);
|
||||
|
||||
au.timestamp.dts = Some(0);
|
||||
}
|
||||
}
|
||||
|
||||
debug_assert_eq!(retained_len, data.len());
|
||||
self.nals.clear();
|
||||
self.pieces.clear();
|
||||
@ -511,6 +564,7 @@ impl Depacketizer {
|
||||
}
|
||||
_ => false,
|
||||
};
|
||||
|
||||
Ok(VideoFrame {
|
||||
has_new_parameters,
|
||||
loss: au.loss,
|
||||
@ -997,6 +1051,7 @@ enum PacketizerState {
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use pretty_assertions::assert_eq;
|
||||
use std::num::NonZeroU32;
|
||||
|
||||
use crate::testutil::init_logging;
|
||||
@ -1062,6 +1117,7 @@ mod tests {
|
||||
let mut d = super::Depacketizer::new(90_000, Some("packetization-mode=1;profile-level-id=64001E;sprop-parameter-sets=Z2QAHqwsaoLA9puCgIKgAAADACAAAAMD0IAA,aO4xshsA")).unwrap();
|
||||
let timestamp = crate::Timestamp {
|
||||
timestamp: 0,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
@ -1171,11 +1227,13 @@ mod tests {
|
||||
let mut d = super::Depacketizer::new(90_000, Some("packetization-mode=1;profile-level-id=640033;sprop-parameter-sets=Z2QAM6wVFKCgL/lQ,aO48sA==")).unwrap();
|
||||
let ts1 = crate::Timestamp {
|
||||
timestamp: 0,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
let ts2 = crate::Timestamp {
|
||||
timestamp: 1,
|
||||
dts: Some(0),
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
@ -1255,11 +1313,13 @@ mod tests {
|
||||
let mut d = super::Depacketizer::new(90_000, Some("packetization-mode=1;profile-level-id=640033;sprop-parameter-sets=Z2QAM6wVFKCgL/lQ,aO48sA==")).unwrap();
|
||||
let ts1 = crate::Timestamp {
|
||||
timestamp: 0,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
let ts2 = crate::Timestamp {
|
||||
timestamp: 1,
|
||||
dts: Some(0),
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
@ -1361,6 +1421,7 @@ mod tests {
|
||||
}
|
||||
let timestamp = crate::Timestamp {
|
||||
timestamp: 0,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
@ -1469,6 +1530,7 @@ mod tests {
|
||||
// The stream should honor in-band parameters.
|
||||
let timestamp = crate::Timestamp {
|
||||
timestamp: 0,
|
||||
dts: None,
|
||||
clock_rate: NonZeroU32::new(90_000).unwrap(),
|
||||
start: 0,
|
||||
};
|
||||
|
||||
403
src/codec/h264/dts_extractor.rs
Normal file
403
src/codec/h264/dts_extractor.rs
Normal file
@ -0,0 +1,403 @@
|
||||
// https://github.com/bluenviron/gortsplib/blob/f0540b4eee760583b2d94f022674b0f3b0f8c8b0/pkg/codecs/h264/dts_extractor.go
|
||||
|
||||
use crate::codec::h264::{
|
||||
emulation_prevention::emulation_prevention_remove,
|
||||
sps::{self, Sps},
|
||||
};
|
||||
use bitstream_io::{BitRead, BitReader};
|
||||
use h264_reader::nal::UnitType;
|
||||
use std::io::Cursor;
|
||||
use thiserror::Error;
|
||||
|
||||
#[derive(Debug, Error)]
|
||||
pub enum DtsExtractorError {
|
||||
#[error("{0}")]
|
||||
FromInt(#[from] std::num::TryFromIntError),
|
||||
|
||||
#[error("frame_mbs_only_flag = 0 is not supported")]
|
||||
FrameMbsNotSupported,
|
||||
|
||||
#[error("POC not found")]
|
||||
PocNotFound,
|
||||
|
||||
#[error("invalid POC")]
|
||||
PocInvalid,
|
||||
|
||||
#[error("{0}")]
|
||||
SpsUnmarshal(#[from] sps::Error),
|
||||
|
||||
#[error("SPS not received yet")]
|
||||
SpsNotReceivedYet,
|
||||
|
||||
#[error("pic_order_cnt_type = 1 is not supported yet")]
|
||||
PicOrderCntType1Unsupported,
|
||||
|
||||
#[error("DTS is greater than PTS: '{0}' vs '{1}'")]
|
||||
DtsGreaterThanPts(i64, i64),
|
||||
|
||||
#[error("DTS is not monotonically increasing, was {0}, now is {1}")]
|
||||
DtsNotIncreasing(i64, i64),
|
||||
|
||||
#[error("read: {0}")]
|
||||
Read(#[from] std::io::Error),
|
||||
|
||||
#[error("unit type value {0} out of range")]
|
||||
UnitType(u8),
|
||||
}
|
||||
|
||||
fn get_picture_order_count(sps: &Sps, buf: &[u8]) -> Result<u32, DtsExtractorError> {
|
||||
let buf = emulation_prevention_remove(&buf[..6]);
|
||||
let mut r = BitReader::new(Cursor::new(buf));
|
||||
|
||||
r.skip(8)?;
|
||||
|
||||
sps::read_golomb_unsigned(&mut r)?; // first_mb_in_slice
|
||||
sps::read_golomb_unsigned(&mut r)?; // slice_type
|
||||
sps::read_golomb_unsigned(&mut r)?; // pic_parameter_set_id
|
||||
r.skip(sps.log2_max_frame_num_minus4 + 4)?; // frame_num
|
||||
|
||||
if !sps.frame_mbs_only_flag {
|
||||
return Err(DtsExtractorError::FrameMbsNotSupported);
|
||||
}
|
||||
|
||||
let pic_order_cnt_lsb: u32 = r.read(sps.log2_max_pic_order_cnt_lsb_minus4 + 4)?;
|
||||
|
||||
Ok(pic_order_cnt_lsb)
|
||||
}
|
||||
|
||||
fn find_picture_order_count(sps: &Sps, au: &[Vec<u8>]) -> Result<u32, DtsExtractorError> {
|
||||
for nalu in au {
|
||||
let typ = nalu[0] & 0b00011111;
|
||||
let typ = UnitType::for_id(typ).map_err(|_| DtsExtractorError::UnitType(typ))?;
|
||||
if typ == UnitType::SliceLayerWithoutPartitioningNonIdr {
|
||||
let poc = get_picture_order_count(sps, nalu)?;
|
||||
return Ok(poc);
|
||||
}
|
||||
}
|
||||
Err(DtsExtractorError::PocNotFound)
|
||||
}
|
||||
|
||||
fn get_picture_order_count_diff(
|
||||
sps: &Sps,
|
||||
poc1: u32,
|
||||
poc2: u32,
|
||||
) -> Result<i32, std::num::TryFromIntError> {
|
||||
let diff = i32::try_from(poc1)? - i32::try_from(poc2)?;
|
||||
if diff < -((1 << (sps.log2_max_pic_order_cnt_lsb_minus4 + 3)) - 1) {
|
||||
Ok(diff + (1 << (sps.log2_max_pic_order_cnt_lsb_minus4 + 4)))
|
||||
} else if diff > ((1 << (sps.log2_max_pic_order_cnt_lsb_minus4 + 3)) - 1) {
|
||||
Ok(diff - (1 << (sps.log2_max_pic_order_cnt_lsb_minus4 + 4)))
|
||||
} else {
|
||||
Ok(diff)
|
||||
}
|
||||
}
|
||||
|
||||
// Allows to extract DTS from PTS.
|
||||
#[derive(Debug)]
|
||||
pub struct DtsExtractor {
|
||||
prev_dts_filled: bool,
|
||||
prev_dts: i64,
|
||||
expected_poc: u32,
|
||||
reordered_frames: isize,
|
||||
pause_dts: isize,
|
||||
poc_increment: isize,
|
||||
}
|
||||
|
||||
impl Default for DtsExtractor {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
|
||||
impl DtsExtractor {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
poc_increment: 2,
|
||||
prev_dts_filled: false,
|
||||
prev_dts: 0,
|
||||
expected_poc: 0,
|
||||
reordered_frames: 0,
|
||||
pause_dts: 0,
|
||||
}
|
||||
}
|
||||
|
||||
// Extracts the DTS of a access unit.
|
||||
pub fn extract(
|
||||
&mut self,
|
||||
sps: &Sps,
|
||||
au: &[Vec<u8>],
|
||||
pts: i64,
|
||||
) -> Result<i64, DtsExtractorError> {
|
||||
let dts = self.extract_inner(sps, au, pts)?;
|
||||
if dts > pts {
|
||||
return Err(DtsExtractorError::DtsGreaterThanPts(dts, pts));
|
||||
}
|
||||
|
||||
if self.prev_dts_filled && dts <= self.prev_dts {
|
||||
return Err(DtsExtractorError::DtsNotIncreasing(self.prev_dts, dts));
|
||||
}
|
||||
|
||||
self.prev_dts = dts;
|
||||
self.prev_dts_filled = true;
|
||||
Ok(dts)
|
||||
}
|
||||
|
||||
fn extract_inner(
|
||||
&mut self,
|
||||
sps: &Sps,
|
||||
au: &[Vec<u8>],
|
||||
pts: i64,
|
||||
) -> Result<i64, DtsExtractorError> {
|
||||
let mut idr_present = false;
|
||||
|
||||
for nalu in au {
|
||||
let typ = nalu[0] & 0b00011111;
|
||||
let typ = UnitType::for_id(typ).map_err(|_| DtsExtractorError::UnitType(typ))?;
|
||||
if typ == UnitType::SliceLayerWithoutPartitioningIdr {
|
||||
idr_present = true
|
||||
}
|
||||
}
|
||||
|
||||
if sps.pic_order_cnt_type == 2 {
|
||||
return Ok(pts);
|
||||
}
|
||||
|
||||
if sps.pic_order_cnt_type == 1 {
|
||||
return Err(DtsExtractorError::PicOrderCntType1Unsupported);
|
||||
}
|
||||
|
||||
if idr_present {
|
||||
self.expected_poc = 0;
|
||||
self.reordered_frames = 0;
|
||||
self.pause_dts = 0;
|
||||
self.poc_increment = 2;
|
||||
return Ok(pts);
|
||||
}
|
||||
|
||||
self.expected_poc += u32::try_from(self.poc_increment)?;
|
||||
self.expected_poc &= (1 << (sps.log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;
|
||||
|
||||
if self.pause_dts > 0 {
|
||||
self.pause_dts -= 1;
|
||||
return Ok(self.prev_dts + 1);
|
||||
}
|
||||
|
||||
let poc = find_picture_order_count(sps, au)?;
|
||||
|
||||
if self.poc_increment == 2 && (poc % 2) != 0 {
|
||||
self.poc_increment = 1;
|
||||
self.expected_poc /= 2;
|
||||
}
|
||||
|
||||
let poc_diff = isize::try_from(get_picture_order_count_diff(sps, poc, self.expected_poc)?)?
|
||||
+ self.reordered_frames * self.poc_increment;
|
||||
|
||||
if poc_diff < 0 {
|
||||
return Err(DtsExtractorError::PocInvalid);
|
||||
}
|
||||
|
||||
if poc_diff == 0 {
|
||||
return Ok(pts);
|
||||
}
|
||||
|
||||
let reordered_frames =
|
||||
(poc_diff - self.reordered_frames * self.poc_increment) / self.poc_increment;
|
||||
if reordered_frames > self.reordered_frames {
|
||||
self.pause_dts = reordered_frames - self.reordered_frames - 1;
|
||||
self.reordered_frames = reordered_frames;
|
||||
return Ok(self.prev_dts + 1);
|
||||
}
|
||||
|
||||
Ok(self.prev_dts
|
||||
+ ((pts - self.prev_dts) * i64::try_from(self.poc_increment)?
|
||||
/ i64::try_from(poc_diff + self.poc_increment)?))
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use test_case::test_case;
|
||||
|
||||
struct SequenceSample {
|
||||
nalus: Vec<Vec<u8>>,
|
||||
dts: i64,
|
||||
pts: i64,
|
||||
}
|
||||
|
||||
#[test_case(
|
||||
&[
|
||||
0x67, 0x64, 0x00, 0x28, 0xac, 0xd9, 0x40, 0x78,
|
||||
0x02, 0x27, 0xe5, 0x84, 0x00, 0x00, 0x03, 0x00,
|
||||
0x04, 0x00, 0x00, 0x03, 0x00, 0xf0, 0x3c, 0x60,
|
||||
0xc6, 0x58,
|
||||
],
|
||||
vec![
|
||||
SequenceSample{
|
||||
nalus: vec![
|
||||
vec![ // IDR
|
||||
0x65, 0x88, 0x84, 0x00, 0x33, 0xff,
|
||||
],
|
||||
],
|
||||
dts: 3333333,
|
||||
pts: 3333333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9a, 0x21, 0x6c, 0x45, 0xff]],
|
||||
dts: 3336666,
|
||||
pts: 3336666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9a, 0x42, 0x3c, 0x21, 0x93]],
|
||||
dts: 3340000,
|
||||
pts: 3340000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9a, 0x63, 0x49, 0xe1, 0x0f]],
|
||||
dts: 3343333,
|
||||
pts: 3343333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9a, 0x86, 0x49, 0xe1, 0x0f]],
|
||||
dts: 3343334,
|
||||
pts: 3353333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9e, 0xa5, 0x42, 0x7f, 0xf9]],
|
||||
dts: 3343335,
|
||||
pts: 3350000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x01, 0x9e, 0xc4, 0x69, 0x13, 0xff]],
|
||||
dts: 3346666,
|
||||
pts: 3346666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x41, 0x9a, 0xc8, 0x4b, 0xa8, 0x42]],
|
||||
dts: 3349999,
|
||||
pts: 3360000,
|
||||
},
|
||||
]; "with timing info"
|
||||
)]
|
||||
#[test_case(
|
||||
&[
|
||||
0x27, 0x64, 0x00, 0x20, 0xac, 0x52, 0x18, 0x0f,
|
||||
0x01, 0x17, 0xef, 0xff, 0x00, 0x01, 0x00, 0x01,
|
||||
0x6a, 0x02, 0x02, 0x03, 0x6d, 0x85, 0x6b, 0xde,
|
||||
0xf8, 0x08,
|
||||
],
|
||||
vec![
|
||||
SequenceSample{
|
||||
nalus: vec![
|
||||
vec![ // IDR
|
||||
0x25, 0xb8, 0x08, 0x02, 0x1f, 0xff,
|
||||
],
|
||||
],
|
||||
dts: 85000,
|
||||
pts: 85000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe1, 0x05, 0xc7, 0x38, 0xbf]],
|
||||
dts: 86666,
|
||||
pts: 86666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe2, 0x09, 0xa1, 0xce, 0x0b]],
|
||||
dts: 88333,
|
||||
pts: 88333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe3, 0x0d, 0xb1, 0xce, 0x02]],
|
||||
dts: 90000,
|
||||
pts: 90000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe4, 0x11, 0x90, 0x73, 0x80]],
|
||||
dts: 91666,
|
||||
pts: 91666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe5, 0x19, 0x0e, 0x70, 0x01]],
|
||||
dts: 91667,
|
||||
pts: 95000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x01, 0xa9, 0x85, 0x7c, 0x93, 0xff]],
|
||||
dts: 93333,
|
||||
pts: 93333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe6, 0x1d, 0x0e, 0x70, 0x01]],
|
||||
dts: 94999,
|
||||
pts: 96666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe7, 0x21, 0x0e, 0x70, 0x01]],
|
||||
dts: 96666,
|
||||
pts: 98333,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe8, 0x25, 0x0e, 0x70, 0x01]],
|
||||
dts: 98333,
|
||||
pts: 100000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xe9, 0x29, 0x0e, 0x70, 0x01]],
|
||||
dts: 99999,
|
||||
pts: 101666,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x21, 0xea, 0x31, 0x0e, 0x70, 0x01]],
|
||||
dts: 101666,
|
||||
pts: 105000,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x01, 0xaa, 0xcb, 0x7c, 0x93, 0xff]],
|
||||
dts: 103333,
|
||||
pts: 103333,
|
||||
},
|
||||
]; "no timing info"
|
||||
)]
|
||||
#[test_case(
|
||||
&[
|
||||
0x67, 0x64, 0x00, 0x2a, 0xac, 0x2c, 0x6a, 0x81,
|
||||
0xe0, 0x08, 0x9f, 0x96, 0x6e, 0x02, 0x02, 0x02,
|
||||
0x80, 0x00, 0x03, 0x84, 0x00, 0x00, 0xaf, 0xc8,
|
||||
0x02,
|
||||
],
|
||||
vec![
|
||||
SequenceSample{
|
||||
nalus: vec![
|
||||
vec![ // IDR
|
||||
0x65, 0xb8, 0x00, 0x00, 0x0b, 0xc8,
|
||||
],
|
||||
],
|
||||
dts: 61,
|
||||
pts: 61,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x61, 0xe0, 0x20, 0x00, 0x39, 0x37]],
|
||||
dts: 101,
|
||||
pts: 101,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x61, 0xe0, 0x40, 0x00, 0x59, 0x37]],
|
||||
dts: 141,
|
||||
pts: 141,
|
||||
},
|
||||
SequenceSample{
|
||||
nalus: vec![vec![0x61, 0xe0, 0x60, 0x00, 0x79, 0x37]],
|
||||
dts: 181,
|
||||
pts: 181,
|
||||
},
|
||||
]; "poc increment = 1"
|
||||
)]
|
||||
fn test_dts_extractor(sps: &[u8], sequence: Vec<SequenceSample>) {
|
||||
let sps = Sps::deserialize(sps).unwrap();
|
||||
let mut ex = DtsExtractor::new();
|
||||
for sample in sequence {
|
||||
let dts = ex.extract(&sps, &sample.nalus, sample.pts).unwrap();
|
||||
assert_eq!(sample.dts, dts);
|
||||
}
|
||||
}
|
||||
}
|
||||
62
src/codec/h264/emulation_prevention.rs
Normal file
62
src/codec/h264/emulation_prevention.rs
Normal file
@ -0,0 +1,62 @@
|
||||
// Removes emulation prevention bytes from a NALU.
|
||||
pub fn emulation_prevention_remove(nalu: &[u8]) -> Vec<u8> {
|
||||
// 0x00 0x00 0x03 0x00 -> 0x00 0x00 0x00
|
||||
// 0x00 0x00 0x03 0x01 -> 0x00 0x00 0x01
|
||||
// 0x00 0x00 0x03 0x02 -> 0x00 0x00 0x02
|
||||
// 0x00 0x00 0x03 0x03 -> 0x00 0x00 0x03
|
||||
|
||||
let len = nalu.len();
|
||||
let mut ret_len = len;
|
||||
for i in 2..len {
|
||||
if nalu[i - 2] == 0 && nalu[i - 1] == 0 && nalu[i] == 3 {
|
||||
ret_len -= 1;
|
||||
}
|
||||
}
|
||||
|
||||
let mut ret = Vec::with_capacity(ret_len);
|
||||
let mut start = 0;
|
||||
for i in 2..len {
|
||||
if nalu[i - 2] == 0 && nalu[i - 1] == 0 && nalu[i] == 3 {
|
||||
ret.extend_from_slice(&nalu[start..i]);
|
||||
start = i + 1;
|
||||
}
|
||||
}
|
||||
|
||||
ret.extend_from_slice(&nalu[start..]);
|
||||
ret
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use test_case::test_case;
|
||||
|
||||
#[test_case(
|
||||
&[
|
||||
0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x01,
|
||||
0x00, 0x00, 0x02,
|
||||
0x00, 0x00, 0x03,
|
||||
],
|
||||
&[
|
||||
0x00, 0x00, 0x03, 0x00,
|
||||
0x00, 0x00, 0x03, 0x01,
|
||||
0x00, 0x00, 0x03, 0x02,
|
||||
0x00, 0x00, 0x03, 0x03,
|
||||
]; "base"
|
||||
)]
|
||||
#[test_case(
|
||||
&[
|
||||
0x00, 0x00, 0x00,
|
||||
0x00, 0x00,
|
||||
],
|
||||
&[
|
||||
0x00, 0x00, 0x03,
|
||||
0x00, 0x00, 0x03, 0x00,
|
||||
]; "double emulation byte"
|
||||
)]
|
||||
#[test_case(&[0x00, 0x00], &[0x00, 0x00, 0x03]; "terminal emulation byte")]
|
||||
fn test_emulation_prevention_remove(unproc: &[u8], proc: &[u8]) {
|
||||
assert_eq!(unproc, emulation_prevention_remove(proc))
|
||||
}
|
||||
}
|
||||
1200
src/codec/h264/sps.rs
Normal file
1200
src/codec/h264/sps.rs
Normal file
File diff suppressed because it is too large
Load Diff
14
src/lib.rs
14
src/lib.rs
@ -96,6 +96,8 @@ pub struct Timestamp {
|
||||
/// A timestamp which must be compared to `start`.
|
||||
timestamp: i64,
|
||||
|
||||
dts: Option<i64>,
|
||||
|
||||
/// The codec-specified clock rate, in Hz. Must be non-zero.
|
||||
clock_rate: NonZeroU32,
|
||||
|
||||
@ -109,6 +111,7 @@ impl Timestamp {
|
||||
pub fn new(timestamp: i64, clock_rate: NonZeroU32, start: u32) -> Option<Self> {
|
||||
timestamp.checked_sub(i64::from(start)).map(|_| Timestamp {
|
||||
timestamp,
|
||||
dts: None,
|
||||
clock_rate,
|
||||
start,
|
||||
})
|
||||
@ -120,6 +123,11 @@ impl Timestamp {
|
||||
self.timestamp
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub fn dts(&self) -> Option<i64> {
|
||||
self.dts
|
||||
}
|
||||
|
||||
/// Returns timestamp of the start of the stream.
|
||||
#[inline]
|
||||
pub fn start(&self) -> u32 {
|
||||
@ -153,6 +161,7 @@ impl Timestamp {
|
||||
.checked_add(i64::from(delta))
|
||||
.map(|timestamp| Timestamp {
|
||||
timestamp,
|
||||
dts: self.dts,
|
||||
clock_rate: self.clock_rate,
|
||||
start: self.start,
|
||||
})
|
||||
@ -163,10 +172,11 @@ impl Display for Timestamp {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(
|
||||
f,
|
||||
"{} (mod-2^32: {}), npt {:.03}",
|
||||
"{} (mod-2^32: {}), npt {:.03}, dts {:?}",
|
||||
self.timestamp,
|
||||
self.timestamp as u32,
|
||||
self.elapsed_secs()
|
||||
self.elapsed_secs(),
|
||||
self.dts,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user