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chore: create utils-format to reuse code between formats
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| [package] | ||
| name = "symphonia-utils-format" | ||
| version = "0.5.4" | ||
| description = "Project Symphonia utilities for formats." | ||
| homepage = "https://github.com/pdeljanov/Symphonia" | ||
| repository = "https://github.com/pdeljanov/Symphonia" | ||
| authors = ["Philip Deljanov <philip.deljanov@gmail.com>"] | ||
| license = "MPL-2.0" | ||
| readme = "README.md" | ||
| categories = ["multimedia", "multimedia::audio", "multimedia::encoding"] | ||
| keywords = ["audio", "multimedia", "media", "mpeg"] | ||
| edition = "2021" | ||
| rust-version = "1.56" | ||
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| [dependencies] | ||
| symphonia-core = { version = "0.5.4", path = "../symphonia-core" } | ||
| symphonia-metadata = { version = "0.5.4", path = "../symphonia-metadata" } |
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| # Symphonia Format Utilities | ||
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| [](https://docs.rs/symphonia-utils-format) | ||
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| Common utilities for formats for Project Symphonia. | ||
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| **Note:** This crate is part of Symphonia. Please use the [`symphonia`](https://crates.io/crates/symphonia) crate instead of this one directly. | ||
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| ## License | ||
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| Symphonia is provided under the MPL v2.0 license. Please refer to the LICENSE file for more details. | ||
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| ## Contributing | ||
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| Symphonia is a free and open-source project that welcomes contributions! To get started, please read our [Contribution Guidelines](https://github.com/pdeljanov/Symphonia/tree/master/CONTRIBUTING.md). |
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| // Symphonia | ||
| // Copyright (c) 2019-2022 The Project Symphonia Developers. | ||
| // | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
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| // The following lints are allowed in all Symphonia crates. Please see clippy.toml for their | ||
| // justification. | ||
| #![allow(clippy::comparison_chain)] | ||
| #![allow(clippy::excessive_precision)] | ||
| #![allow(clippy::identity_op)] | ||
| #![allow(clippy::manual_range_contains)] | ||
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| pub mod video; |
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| // Symphonia | ||
| // Copyright (c) 2019-2022 The Project Symphonia Developers. | ||
| // | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
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| use symphonia_core::codecs::CodecProfile; | ||
| use symphonia_core::errors::{decode_error, Result}; | ||
| use symphonia_core::io::{BitReaderLtr, ReadBitsLtr}; | ||
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| pub struct AVCDecoderConfigurationRecord { | ||
| pub profile: CodecProfile, | ||
| pub level: u32, | ||
| } | ||
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| impl AVCDecoderConfigurationRecord { | ||
| pub fn read(buf: &[u8]) -> Result<Self> { | ||
| let mut br = BitReaderLtr::new(buf); | ||
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| // Parse the AVCDecoderConfigurationRecord to get the profile and level. Defined in | ||
| // ISO/IEC 14496-15 section 5.3.3.1. | ||
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| // Configuration version is always 1. | ||
| let configuration_version = br.read_bits_leq32(8)?; | ||
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| if configuration_version != 1 { | ||
| return decode_error( | ||
| "utils (avc): unexpected avc decoder configuration record version", | ||
| ); | ||
| } | ||
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| // AVC profile as defined in ISO/IEC 14496-10. | ||
| let avc_profile_indication = br.read_bits_leq32(8)?; | ||
| let _profile_compatibility = br.read_bits_leq32(8)?; | ||
| let avc_level_indication = br.read_bits_leq32(8)?; | ||
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| Ok(AVCDecoderConfigurationRecord { | ||
| profile: CodecProfile::new(avc_profile_indication), | ||
| level: avc_level_indication, | ||
| }) | ||
| } | ||
| } | ||
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| pub struct HEVCDecoderConfigurationRecord { | ||
| pub profile: CodecProfile, | ||
| pub level: u32, | ||
| } | ||
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| impl HEVCDecoderConfigurationRecord { | ||
| pub fn read(buf: &[u8]) -> Result<Self> { | ||
| let mut br = BitReaderLtr::new(buf); | ||
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| // Parse the HEVCDecoderConfigurationRecord to get the profile and level. Defined in | ||
| // ISO/IEC 14496-15 section 8.3.3.1. | ||
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| // Configuration version is always 1. | ||
| let configuration_version = br.read_bits_leq32(8)?; | ||
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| if configuration_version != 1 { | ||
| return decode_error( | ||
| "utils (hevc): unexpected hevc decoder configuration record version", | ||
| ); | ||
| } | ||
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| let _general_profile_space = br.read_bits_leq32(2)?; | ||
| let _general_tier_flag = br.read_bit()?; | ||
| let general_profile_idc = br.read_bits_leq32(5)?; | ||
| let _general_profile_compatibility_flags = br.read_bits_leq32(32)?; | ||
| let _general_constraint_indicator_flags = br.read_bits_leq64(48)?; | ||
| let general_level_idc = br.read_bits_leq32(8)?; | ||
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| Ok(HEVCDecoderConfigurationRecord { | ||
| profile: CodecProfile::new(general_profile_idc), | ||
| level: general_level_idc, | ||
| }) | ||
| } | ||
| } |