3.B：vendor opencore-amr + AMRCodec Swift wrapper，打通 AMR↔WAV 编解码
为支撑 H5 的 prepareaudio / mediaTypeAudio 录音上传 + 远端语音播放
（docs/H5-Native-Contract.md §3.1 ［4］［5］ + §3.2 ［9］）接入 AMR-NB
编解码能力。AMR-NB 是跨端（iOS / Android / 旧版本客户端）契约硬约束，
不可换 AAC / Opus。
## 接入路径
直接 vendor daoqi msext 现成的 fat .a（已上线多年），不打 xcframework /
不重编源码：
- Vendor/OpenCoreAMR/v0.1.x/libopencore-amrnb.a：daoqi 同款 5-slice fat
库（含 2026-06-20 lipo -segalign 8 修过的对齐版本）
- Vendor/OpenCoreAMR/v0.1.x/{interf_dec,interf_enc}.h：amrnb 公开头
- Vendor/OpenCoreAMR/README.md：来源、版本、修复历史、为何不打 xcframework
- ylgamehall/Source/Audio/AMRFileCodec/{amrFileCodec.h,amrFileCodec.mm}：
daoqi 同款 wrapper（文件级 WAV↔AMR 处理）
- ylgamehall/Source/Audio/AMRCodec.swift：Swift 薄 wrapper（wavToAmr /
amrToWav 两个纯函数 + AMRCodec.Error）
理由见 Vendor/OpenCoreAMR/README.md「为何不打 xcframework / 不重编源码」
一节，本质是 opencore-amr 整个 iOS 生态没有"现代主流"分发形态，社区无
官方 SPM / xcframework 维护，强行打反而引入新风险。
## 关键技术点：extern "C" 修复 ObjC++ name mangling
amrFileCodec.h 在原项目里没有 extern "C" 包裹函数声明，daoqi 能跑是
因为调用方 VoiceConverter.mm 也是 ObjC++，双方按相同 C++ name mangling
链接能对上。
新外壳从 Swift 通过 bridging-header 调用，Swift 按 C 函数解析，期望符号
_EncodeWAVEFileToAMRFile / _DecodeWAVEFileToWAVEFile（C 链接）；但
.mm 编译时默认 C++ name mangling，符号变成 __Z25Encode...，导致链接器
报 Undefined symbol。
修复：在 amrFileCodec.h 的函数声明外加 #ifdef __cplusplus / extern "C"
包裹。这是标准 C/C++ 头文件兼容写法，对 daoqi 老路径无影响（ObjC++
调用方仍能链接 C-linkage 函数）。
## .gitignore：白名单 Vendor 下的 .a
发现历史遗留问题：原 .gitignore *.a 通配规则把 libWeChatSDK.a 也排除
了，意味着别人 clone 此仓库后链接失败。本次顺带修复：
!Vendor/**/*.a
让 Vendor 下的 .a 显式纳入跟踪。本提交同时把 libWeChatSDK.a（历史
缺失）+ libopencore-amrnb.a（本次新增）一并加入 git 跟踪。
## 工程改动
pbxproj 改动由用户在 Xcode UI 完成（4 项 Build Settings：Add .a 到
Frameworks group / Header Search Paths +2 / Library Search Paths +1；
EXCLUDED_ARCHS arm64-simulator 因真机调试场景暂未配，需要时再加）。
## 验证
BuildProject 通过，0 错误，符号链接正确。XcodeRefreshCodeIssuesInFile
对 AMRCodec.swift 0 诊断。
This commit is contained in:
joywayer
@@ -17,6 +17,9 @@ DerivedData/
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*.so.[0-9]*
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*.so.[0-9]*
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*.la
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*.la
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*.a
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*.a
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# Vendor 下的 .a 是项目依赖（如 libWeChatSDK.a / libopencore-amrnb.a），必须跟踪
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# —— 否则其他人 clone 后链接失败。覆盖上面 *.a 的通配规则。
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!Vendor/**/*.a
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*.pyc
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*.pyc
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*.swp
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*.swp
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*~.nib
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*~.nib
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Vendored
+109
@@ -0,0 +1,109 @@
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# OpenCoreAMR
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`opencore-amr` 是 AMR-NB / AMR-WB 语音编解码的 C 库（OpenCORE 项目，Martin
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Storsjo 维护）。新外壳沿用 daoqi msext 时期的同一份二进制 + 公开头，**不打
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xcframework 不重新编译**。理由见下文「ADR」一节。
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## 用途
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支撑 H5 的语音功能（`prepareaudio` 录音 → AMR 编码 → 七牛上传；
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`mediaTypeAudio` 下载 → AMR 解码 → 播放）。AMR-NB 格式是跨端（iOS / Android /
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旧版本客户端）契约硬约束，不可换成 AAC / Opus。详见
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`docs/H5-Native-Contract.md` §3.1 ［4］［5］ + §3.2 ［9］。
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## 来源
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- 上游：https://sourceforge.net/projects/opencore-amr/
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- 当前镜像：https://github.com/BelledonneCommunications/opencore-amr
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- 二进制版本：daoqi 沿用，约 2014 年打包，对应上游 **0.1.3** 时间点（v0.1.x 目
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录命名取自此）。具体小版本无可考——`.a` 二进制无版本号字段，public 头
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(`interf_enc.h` / `interf_dec.h`) 自 0.1.0 以来 ABI 未变
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- daoqi 项目路径：`daoqi/msext/Class/Common/VoiceConvert/{lib/, opencore-amrnb/}`
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## 目录
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```
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v0.1.x/
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├── libopencore-amrnb.a （5 slice fat：i386 + x86_64 + armv7 + armv7s + arm64-device）
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├── interf_dec.h （AMR-NB 解码 C API）
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└── interf_enc.h （AMR-NB 编码 C API）
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```
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不 vendor `libopencore-amrwb.a`——daoqi `amrFileCodec.mm` 实际只用 NB（窄带，
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8kHz 单声道），WB 路径源码注释掉了，新外壳同样只用 NB。
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## fat header 对齐补丁
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daoqi `.a` 在 2026-06-20 用 `lipo -segalign 8` 重新打包过，所有 5 个 slice 的
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fat header `align = 2^3 (8)`。这是为了适配 Xcode 26+ 的新链接器
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`ld_prime` 对 fat 库 architecture slice 对齐字段的硬性要求（≥ 2^3）；不修则
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会要 `-ld_classic` 过渡选项（已确认是定时炸弹）。
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详细背景与修复命令见 `youle_app_ios/CLAUDE.md` 「2026-06-20：opencore-amr 静
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态库 fat header 重新对齐」一节。
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**已知遗留链接器警告（无害）**：
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- `No platform load command found in ... assuming: iOS`（每个 .o 一行，约 154
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行）— 2014 年 .o 不带 `LC_VERSION_MIN_IPHONEOS` / `LC_BUILD_VERSION` load
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command；新链接器假定为 iOS，行为正确
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- `Reducing alignment of section __DATA,__common from 0x8000 to 0x4000`
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要彻底消除这两类警告需要重编 opencore-amr 源码，违反「稳定 > 一切」原
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则——**接受现状**。
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## simulator-arm64 缺失
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`.a` 是 2014 年打包，**没有 arm64-simulator slice**（这是 2020 年 Apple
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Silicon 上市后才有的概念）。M1+ Mac 上 simulator 编译需要在 Build Settings 设
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置：
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```
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EXCLUDED_ARCHS[sdk=iphonesimulator*] = arm64
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```
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让 simulator 退回 x86_64 切片（通过 Rosetta 跑）。**仅影响开发期 simulator**，
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release device 是 arm64 完整可用。
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## 为何不打 xcframework / 不重编源码？
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ADR：选 vendor 现成 .a 而非现代化 xcframework / 源码重编。
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- **依据**：`opencore-amr` 整个 iOS 生态都是"老 vendor 模式"——各家大厂（微
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信、QQ、网易云信、声网 IM 等）都内部 vendor `.a`，没人公开维护 SPM / 官方
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xcframework。社区无"现代主流"形态可参照
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- **稳定性**：daoqi 这份 `.a` 已上线 N 年稳定运行；现代化"形态"（xcframework）
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本质上仍是 vendor 同一份二进制字节，形态收益边际，引入新打包/编译路径反而
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增加风险
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- **跨编辑成本**：要完整 xcframework 必须从源码编出 arm64-simulator slice，跨
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编 iOS（autoconf）容易踩坑，1+ 小时调试 vs vendor 几分钟落地
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- **CLAUDE.md 原则一致**：项目「稳定 > 一切」+「daoqi 是工作参照实现」精神
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要求避免"为现代化而现代化"。本目录的现代化收益体现在**组织规范 + 文档完
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备**（与 WechatSDK Vendor 并列、README 来源/版本/修复历史齐全），而不是打包
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形态
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未来若 Xcode 大版本彻底干掉对 fat `.a` 的支持（被动升级），再走 xcframework
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化或源码重编路线，按 CLAUDE.md「Xcode 26.5+ 兼容性 Build Settings」一节的
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patch 形式记录即可。
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## 替换 / 升级流程（未来用）
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1. 从 SourceForge / GitHub mirror 拉新版本源码（如 0.1.6）
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2. 用 `xcrun -sdk iphoneos clang` + `-arch arm64` 跨编 device slice
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3. 用 `xcrun -sdk iphonesimulator clang` + `-arch arm64`/`-arch x86_64` 跨编
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simulator slice
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4. `lipo -create -segalign 8` 合并为新 fat `.a`
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5. 替换 `v0.1.x/` 下文件，更新本 README、提交
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## 链接配置
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- Build Phases → Link Binary With Libraries：加 `libopencore-amrnb.a`
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- Build Settings → Header Search Paths：追加
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`$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x`
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- Build Settings → Library Search Paths：追加
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`$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x`
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- Build Settings → Excluded Architectures（iphonesimulator）：`arm64`
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wrapper 源码（`amrFileCodec.{h,mm}` + `AMRCodec.swift`）放在
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`ylgamehall/Source/Audio/AMRFileCodec/` 与 `ylgamehall/Source/Audio/`，
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由项目同步组（PBXFileSystemSynchronizedRootGroup）自动加入编译，无需在
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pbxproj 中显式声明。
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+34
@@ -0,0 +1,34 @@
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/* ------------------------------------------------------------------
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* Copyright (C) 2009 Martin Storsjo
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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|
* You may obtain a copy of the License at
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*
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|
* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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|
* express or implied.
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|
* See the License for the specific language governing permissions
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|
* and limitations under the License.
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|
* -------------------------------------------------------------------
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|
*/
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#ifndef OPENCORE_AMRNB_INTERF_DEC_H
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#define OPENCORE_AMRNB_INTERF_DEC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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void* Decoder_Interface_init(void);
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void Decoder_Interface_exit(void* state);
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void Decoder_Interface_Decode(void* state, const unsigned char* in, short* out, int bfi);
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|
#ifdef __cplusplus
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|
}
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|
#endif
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|
#endif
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+50
@@ -0,0 +1,50 @@
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/* ------------------------------------------------------------------
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|
* Copyright (C) 2009 Martin Storsjo
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|
*
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|
* Licensed under the Apache License, Version 2.0 (the "License");
|
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|
* you may not use this file except in compliance with the License.
|
||||||
|
* You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
|
||||||
|
* express or implied.
|
||||||
|
* See the License for the specific language governing permissions
|
||||||
|
* and limitations under the License.
|
||||||
|
* -------------------------------------------------------------------
|
||||||
|
*/
|
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|
|
||||||
|
#ifndef OPENCORE_AMRNB_INTERF_ENC_H
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|
#define OPENCORE_AMRNB_INTERF_ENC_H
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|
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|
#ifdef __cplusplus
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|
extern "C" {
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|
#endif
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|
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|
#ifndef AMRNB_WRAPPER_INTERNAL
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|
/* Copied from enc/src/gsmamr_enc.h */
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|
enum Mode {
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|
MR475 = 0,/* 4.75 kbps */
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MR515, /* 5.15 kbps */
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MR59, /* 5.90 kbps */
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MR67, /* 6.70 kbps */
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|
MR74, /* 7.40 kbps */
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MR795, /* 7.95 kbps */
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MR102, /* 10.2 kbps */
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|
MR122, /* 12.2 kbps */
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|
MRDTX, /* DTX */
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|
N_MODES /* Not Used */
|
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|
};
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|
#endif
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|
|
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|
void* Encoder_Interface_init(int dtx);
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|
void Encoder_Interface_exit(void* state);
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|
int Encoder_Interface_Encode(void* state, enum Mode mode, const short* speech, unsigned char* out, int forceSpeech);
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|
|
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|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
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|
|
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|
#endif
|
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BIN
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@@ -19,6 +19,7 @@
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1A2955002FEA48CD009E703E /* libWeChatSDK.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954F92FEA0B59009E703E /* libWeChatSDK.a */; };
|
1A2955002FEA48CD009E703E /* libWeChatSDK.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954F92FEA0B59009E703E /* libWeChatSDK.a */; };
|
||||||
1A2955012FEA48D9009E703E /* libz.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954FA2FEA0BA8009E703E /* libz.tbd */; };
|
1A2955012FEA48D9009E703E /* libz.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954FA2FEA0BA8009E703E /* libz.tbd */; };
|
||||||
1A2955022FEA48E4009E703E /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */; };
|
1A2955022FEA48E4009E703E /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */; };
|
||||||
|
1A2955102FEAF514009E703E /* libopencore-amrnb.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 1A29550F2FEAF514009E703E /* libopencore-amrnb.a */; };
|
||||||
/* End PBXBuildFile section */
|
/* End PBXBuildFile section */
|
||||||
|
|
||||||
/* Begin PBXFileReference section */
|
/* Begin PBXFileReference section */
|
||||||
@@ -32,6 +33,7 @@
|
|||||||
1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libsqlite3.tbd; path = usr/lib/libsqlite3.tbd; sourceTree = SDKROOT; };
|
1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libsqlite3.tbd; path = usr/lib/libsqlite3.tbd; sourceTree = SDKROOT; };
|
||||||
1A2954FC2FEA0BCE009E703E /* Security.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Security.framework; path = System/Library/Frameworks/Security.framework; sourceTree = SDKROOT; };
|
1A2954FC2FEA0BCE009E703E /* Security.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Security.framework; path = System/Library/Frameworks/Security.framework; sourceTree = SDKROOT; };
|
||||||
1A2954FE2FEA0BD8009E703E /* CFNetwork.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CFNetwork.framework; path = System/Library/Frameworks/CFNetwork.framework; sourceTree = SDKROOT; };
|
1A2954FE2FEA0BD8009E703E /* CFNetwork.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CFNetwork.framework; path = System/Library/Frameworks/CFNetwork.framework; sourceTree = SDKROOT; };
|
||||||
|
1A29550F2FEAF514009E703E /* libopencore-amrnb.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = "libopencore-amrnb.a"; path = "Vendor/OpenCoreAMR/v0.1.x/libopencore-amrnb.a"; sourceTree = "<group>"; };
|
||||||
1A714BD22FE8047A00913338 /* ylgamehall.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = ylgamehall.app; sourceTree = BUILT_PRODUCTS_DIR; };
|
1A714BD22FE8047A00913338 /* ylgamehall.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = ylgamehall.app; sourceTree = BUILT_PRODUCTS_DIR; };
|
||||||
/* End PBXFileReference section */
|
/* End PBXFileReference section */
|
||||||
|
|
||||||
@@ -70,6 +72,7 @@
|
|||||||
1A2954EF2FE9BA6E009E703E /* CoreTelephony.framework in Frameworks */,
|
1A2954EF2FE9BA6E009E703E /* CoreTelephony.framework in Frameworks */,
|
||||||
1A2954E32FE99C53009E703E /* AMapFoundationKit.framework in Frameworks */,
|
1A2954E32FE99C53009E703E /* AMapFoundationKit.framework in Frameworks */,
|
||||||
1A2954DA2FE97D61009E703E /* Qiniu in Frameworks */,
|
1A2954DA2FE97D61009E703E /* Qiniu in Frameworks */,
|
||||||
|
1A2955102FEAF514009E703E /* libopencore-amrnb.a in Frameworks */,
|
||||||
1A2954ED2FE9BA49009E703E /* SystemConfiguration.framework in Frameworks */,
|
1A2954ED2FE9BA49009E703E /* SystemConfiguration.framework in Frameworks */,
|
||||||
1A2954FD2FEA0BCE009E703E /* Security.framework in Frameworks */,
|
1A2954FD2FEA0BCE009E703E /* Security.framework in Frameworks */,
|
||||||
1A2954F12FE9BA7C009E703E /* ExternalAccessory.framework in Frameworks */,
|
1A2954F12FE9BA7C009E703E /* ExternalAccessory.framework in Frameworks */,
|
||||||
@@ -82,6 +85,7 @@
|
|||||||
1A2954DB2FE99B2F009E703E /* Frameworks */ = {
|
1A2954DB2FE99B2F009E703E /* Frameworks */ = {
|
||||||
isa = PBXGroup;
|
isa = PBXGroup;
|
||||||
children = (
|
children = (
|
||||||
|
1A29550F2FEAF514009E703E /* libopencore-amrnb.a */,
|
||||||
1A2954FE2FEA0BD8009E703E /* CFNetwork.framework */,
|
1A2954FE2FEA0BD8009E703E /* CFNetwork.framework */,
|
||||||
1A2954FC2FEA0BCE009E703E /* Security.framework */,
|
1A2954FC2FEA0BCE009E703E /* Security.framework */,
|
||||||
1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */,
|
1A2954FB2FEA0BB9009E703E /* libsqlite3.tbd */,
|
||||||
@@ -212,7 +216,11 @@
|
|||||||
"$(PROJECT_DIR)/Vendor/AMap",
|
"$(PROJECT_DIR)/Vendor/AMap",
|
||||||
);
|
);
|
||||||
GENERATE_INFOPLIST_FILE = YES;
|
GENERATE_INFOPLIST_FILE = YES;
|
||||||
HEADER_SEARCH_PATHS = "$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2";
|
HEADER_SEARCH_PATHS = (
|
||||||
|
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
||||||
|
"$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x",
|
||||||
|
"$(PROJECT_DIR)/ylgamehall/Source/Audio/AMRFileCodec",
|
||||||
|
);
|
||||||
INFOPLIST_FILE = ylgamehall/Info.plist;
|
INFOPLIST_FILE = ylgamehall/Info.plist;
|
||||||
INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
|
INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
|
||||||
INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;
|
INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;
|
||||||
@@ -227,6 +235,7 @@
|
|||||||
LIBRARY_SEARCH_PATHS = (
|
LIBRARY_SEARCH_PATHS = (
|
||||||
"$(inherited)",
|
"$(inherited)",
|
||||||
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
||||||
|
"$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x",
|
||||||
);
|
);
|
||||||
MARKETING_VERSION = 1.0;
|
MARKETING_VERSION = 1.0;
|
||||||
OTHER_LDFLAGS = "-ObjC";
|
OTHER_LDFLAGS = "-ObjC";
|
||||||
@@ -256,7 +265,11 @@
|
|||||||
"$(PROJECT_DIR)/Vendor/AMap",
|
"$(PROJECT_DIR)/Vendor/AMap",
|
||||||
);
|
);
|
||||||
GENERATE_INFOPLIST_FILE = YES;
|
GENERATE_INFOPLIST_FILE = YES;
|
||||||
HEADER_SEARCH_PATHS = "$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2";
|
HEADER_SEARCH_PATHS = (
|
||||||
|
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
||||||
|
"$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x",
|
||||||
|
"$(PROJECT_DIR)/ylgamehall/Source/Audio/AMRFileCodec",
|
||||||
|
);
|
||||||
INFOPLIST_FILE = ylgamehall/Info.plist;
|
INFOPLIST_FILE = ylgamehall/Info.plist;
|
||||||
INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
|
INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
|
||||||
INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;
|
INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;
|
||||||
@@ -271,6 +284,7 @@
|
|||||||
LIBRARY_SEARCH_PATHS = (
|
LIBRARY_SEARCH_PATHS = (
|
||||||
"$(inherited)",
|
"$(inherited)",
|
||||||
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
"$(PROJECT_DIR)/Vendor/WechatSDK/v1.8.2",
|
||||||
|
"$(PROJECT_DIR)/Vendor/OpenCoreAMR/v0.1.x",
|
||||||
);
|
);
|
||||||
MARKETING_VERSION = 1.0;
|
MARKETING_VERSION = 1.0;
|
||||||
OTHER_LDFLAGS = "-ObjC";
|
OTHER_LDFLAGS = "-ObjC";
|
||||||
|
|||||||
@@ -0,0 +1,69 @@
|
|||||||
|
//
|
||||||
|
// AMRCodec.swift
|
||||||
|
// ylgamehall
|
||||||
|
//
|
||||||
|
// AMR-NB ↔ WAV 文件级编解码的 Swift 薄 wrapper。
|
||||||
|
//
|
||||||
|
// ## 为何如此
|
||||||
|
//
|
||||||
|
// AMR-NB 是 H5 语音功能的跨端契约硬约束（iOS / Android / 旧版本客户端都按
|
||||||
|
// AMR-NB 解码 audiourl），格式不能换。详见 Vendor/OpenCoreAMR/README.md。
|
||||||
|
//
|
||||||
|
// 实际编解码由 daoqi 沿用的 `amrFileCodec.mm`（C++ 文件级操作 — 解析 WAV
|
||||||
|
// header、按 PCM 帧调 opencore-amr，写 AMR 文件头/帧）执行，本文件只是 Swift
|
||||||
|
// 侧的薄包装。
|
||||||
|
//
|
||||||
|
// - 不在 Swift 层重写 amrFileCodec：那几百行 C 风格 byte 流操作（FILE* /
|
||||||
|
// memcpy / 字节序解析）是 Swift 最别扭的领域，重写收益小风险大；daoqi 版
|
||||||
|
// 本已上线 N 年稳定运行
|
||||||
|
// - amrFileCodec.{h,mm} 放在 Source/Audio/AMRFileCodec/，由 synchronized
|
||||||
|
// group 自动编译；amrFileCodec.h 通过 ylgamehall-Bridging-Header.h 暴露
|
||||||
|
// 给 Swift
|
||||||
|
//
|
||||||
|
// ## 用途
|
||||||
|
//
|
||||||
|
// - 录音链路（prepareaudio）：`wavToAmr(_:to:)` 把 AVAudioRecorder 录的 wav
|
||||||
|
// 转 amr 后上传七牛
|
||||||
|
// - 播放链路（mediaTypeAudio）：`amrToWav(_:to:)` 把七牛下载的 amr 转 wav 后
|
||||||
|
// 交 AVAudioPlayer 播
|
||||||
|
//
|
||||||
|
// 契约：docs/H5-Native-Contract.md §3.1 ［4］［5］ + §3.2 ［9］
|
||||||
|
//
|
||||||
|
|
||||||
|
import Foundation
|
||||||
|
|
||||||
|
public enum AMRCodec {
|
||||||
|
|
||||||
|
public enum Error: Swift.Error, Sendable {
|
||||||
|
/// EncodeWAVEFileToAMRFile 返回 0（fopen 失败或写 0 帧）
|
||||||
|
case wavToAmrFailed(wav: String, amr: String)
|
||||||
|
/// DecodeAMRFileToWAVEFile 返回 0（amr 文件不存在 / 头校验失败 / wav 创建失败）
|
||||||
|
case amrToWavFailed(amr: String, wav: String)
|
||||||
|
}
|
||||||
|
|
||||||
|
/// WAV → AMR。
|
||||||
|
///
|
||||||
|
/// 录音的 wav 必须满足 8kHz / 16bit / mono（VoiceRecorderBaseVC.m 的
|
||||||
|
/// `getAudioRecorderSettingDict` 输出，msext 多年约定）；否则
|
||||||
|
/// amrFileCodec 的 ReadPCMFrame 拿不到完整 160 sample 帧，返回 0。
|
||||||
|
///
|
||||||
|
/// - Throws: `AMRCodec.Error.wavToAmrFailed` 当底层 C 函数返回 0
|
||||||
|
public static func wavToAmr(_ wav: URL, to amr: URL) throws {
|
||||||
|
let frames = EncodeWAVEFileToAMRFile(wav.path, amr.path, 1, 16)
|
||||||
|
guard frames > 0 else {
|
||||||
|
throw Error.wavToAmrFailed(wav: wav.path, amr: amr.path)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// AMR → WAV。
|
||||||
|
///
|
||||||
|
/// 解码后的 wav 是 8kHz / 16bit / mono，可直接交 AVAudioPlayer 播放。
|
||||||
|
///
|
||||||
|
/// - Throws: `AMRCodec.Error.amrToWavFailed` 当底层 C 函数返回 0
|
||||||
|
public static func amrToWav(_ amr: URL, to wav: URL) throws {
|
||||||
|
let frames = DecodeAMRFileToWAVEFile(amr.path, wav.path)
|
||||||
|
guard frames > 0 else {
|
||||||
|
throw Error.amrToWavFailed(amr: amr.path, wav: wav.path)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
+90
@@ -0,0 +1,90 @@
|
|||||||
|
//
|
||||||
|
// amrFileCodec.h
|
||||||
|
// amrDemoForiOS
|
||||||
|
//
|
||||||
|
// Created by Tang Xiaoping on 9/27/11.
|
||||||
|
// Copyright 2011 test. All rights reserved.
|
||||||
|
//
|
||||||
|
#ifndef amrFileCodec_h
|
||||||
|
#define amrFileCodec_h
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include "interf_dec.h"
|
||||||
|
#include "interf_enc.h"
|
||||||
|
|
||||||
|
#define AMR_MAGIC_NUMBER "#!AMR\n"
|
||||||
|
|
||||||
|
#define PCM_FRAME_SIZE 160 // 8khz 8000*0.02=160
|
||||||
|
#define MAX_AMR_FRAME_SIZE 32
|
||||||
|
#define AMR_FRAME_COUNT_PER_SECOND 50
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
char chChunkID[4];
|
||||||
|
int nChunkSize;
|
||||||
|
}XCHUNKHEADER;
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
short nFormatTag;
|
||||||
|
short nChannels;
|
||||||
|
int nSamplesPerSec;
|
||||||
|
int nAvgBytesPerSec;
|
||||||
|
short nBlockAlign;
|
||||||
|
short nBitsPerSample;
|
||||||
|
}WAVEFORMAT;
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
short nFormatTag;
|
||||||
|
short nChannels;
|
||||||
|
int nSamplesPerSec;
|
||||||
|
int nAvgBytesPerSec;
|
||||||
|
short nBlockAlign;
|
||||||
|
short nBitsPerSample;
|
||||||
|
short nExSize;
|
||||||
|
}WAVEFORMATX;
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
char chRiffID[4];
|
||||||
|
int nRiffSize;
|
||||||
|
char chRiffFormat[4];
|
||||||
|
}RIFFHEADER;
|
||||||
|
|
||||||
|
typedef struct
|
||||||
|
{
|
||||||
|
char chFmtID[4];
|
||||||
|
int nFmtSize;
|
||||||
|
WAVEFORMAT wf;
|
||||||
|
}FMTBLOCK;
|
||||||
|
|
||||||
|
// extern "C" 在 ObjC++ (.mm) 编译时禁用 C++ name mangling，
|
||||||
|
// 保证 .o 里函数符号是 _EncodeWAVEFileToAMRFile / _DecodeAMRFileToWAVEFile（C 链接），
|
||||||
|
// 与 Swift bridging-header 从 amrFileCodec.h 推导出的 C 函数签名匹配。
|
||||||
|
//
|
||||||
|
// daoqi msext 原版无 extern "C" 包裹，因为调用方 VoiceConverter.mm 也是 ObjC++，
|
||||||
|
// 双方都按 C++ name mangling 链接能匹配上。新外壳从 Swift 通过 bridging-header
|
||||||
|
// 调用，Swift 按 C 函数解析，必须显式标 C linkage。
|
||||||
|
#ifdef __cplusplus
|
||||||
|
extern "C" {
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// WAVE音频采样频率是8khz
|
||||||
|
// 音频样本单元数 = 8000*0.02 = 160 (由采样频率决定)
|
||||||
|
// 声道数 1 : 160
|
||||||
|
// 2 : 160*2 = 320
|
||||||
|
// bps决定样本(sample)大小
|
||||||
|
// bps = 8 --> 8位 unsigned char
|
||||||
|
// 16 --> 16位 unsigned short
|
||||||
|
int EncodeWAVEFileToAMRFile(const char* pchWAVEFilename, const char* pchAMRFileName, int nChannels, int nBitsPerSample);
|
||||||
|
|
||||||
|
// 将AMR文件解码成WAVE文件
|
||||||
|
int DecodeAMRFileToWAVEFile(const char* pchAMRFileName, const char* pchWAVEFilename);
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif
|
||||||
+393
@@ -0,0 +1,393 @@
|
|||||||
|
//
|
||||||
|
// amrFileCodec.cpp
|
||||||
|
// amrDemoForiOS
|
||||||
|
//
|
||||||
|
// Created by Tang Xiaoping on 9/27/11.
|
||||||
|
// Copyright 2011 test. All rights reserved.
|
||||||
|
//
|
||||||
|
|
||||||
|
#include "amrFileCodec.h"
|
||||||
|
int amrEncodeMode[] = {4750, 5150, 5900, 6700, 7400, 7950, 10200, 12200}; // amr 编码方式
|
||||||
|
// 从WAVE文件中跳过WAVE文件头，直接到PCM音频数据
|
||||||
|
void SkipToPCMAudioData(FILE* fpwave)
|
||||||
|
{
|
||||||
|
RIFFHEADER riff;
|
||||||
|
FMTBLOCK fmt;
|
||||||
|
XCHUNKHEADER chunk;
|
||||||
|
WAVEFORMATX wfx;
|
||||||
|
int bDataBlock = 0;
|
||||||
|
|
||||||
|
// 1. 读RIFF头
|
||||||
|
fread(&riff, 1, sizeof(RIFFHEADER), fpwave);
|
||||||
|
|
||||||
|
// 2. 读FMT块 - 如果 fmt.nFmtSize>16 说明需要还有一个附属大小没有读
|
||||||
|
fread(&chunk, 1, sizeof(XCHUNKHEADER), fpwave);
|
||||||
|
if ( chunk.nChunkSize>16 )
|
||||||
|
{
|
||||||
|
fread(&wfx, 1, sizeof(WAVEFORMATX), fpwave);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
memcpy(fmt.chFmtID, chunk.chChunkID, 4);
|
||||||
|
fmt.nFmtSize = chunk.nChunkSize;
|
||||||
|
fread(&fmt.wf, 1, sizeof(WAVEFORMAT), fpwave);
|
||||||
|
}
|
||||||
|
|
||||||
|
// 3.转到data块 - 有些还有fact块等。
|
||||||
|
while(!bDataBlock)
|
||||||
|
{
|
||||||
|
fread(&chunk, 1, sizeof(XCHUNKHEADER), fpwave);
|
||||||
|
if ( !memcmp(chunk.chChunkID, "data", 4) )
|
||||||
|
{
|
||||||
|
bDataBlock = 1;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
// 因为这个不是data块,就跳过块数据
|
||||||
|
fseek(fpwave, chunk.nChunkSize, SEEK_CUR);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// 从WAVE文件读一个完整的PCM音频帧
|
||||||
|
// 返回值: 0-错误 >0: 完整帧大小
|
||||||
|
int ReadPCMFrame(short speech[], FILE* fpwave, int nChannels, int nBitsPerSample)
|
||||||
|
{
|
||||||
|
int nRead = 0;
|
||||||
|
int x = 0, y=0;
|
||||||
|
// unsigned short ush1=0, ush2=0, ush=0;
|
||||||
|
|
||||||
|
// 原始PCM音频帧数据
|
||||||
|
unsigned char pcmFrame_8b1[PCM_FRAME_SIZE];
|
||||||
|
unsigned char pcmFrame_8b2[PCM_FRAME_SIZE<<1];
|
||||||
|
unsigned short pcmFrame_16b1[PCM_FRAME_SIZE];
|
||||||
|
unsigned short pcmFrame_16b2[PCM_FRAME_SIZE<<1];
|
||||||
|
|
||||||
|
if (nBitsPerSample==8 && nChannels==1)
|
||||||
|
{
|
||||||
|
|
||||||
|
nRead = fread(pcmFrame_8b1, (nBitsPerSample/8), PCM_FRAME_SIZE*nChannels, fpwave);
|
||||||
|
|
||||||
|
for(x=0; x<PCM_FRAME_SIZE; x++)
|
||||||
|
{
|
||||||
|
speech[x] =(short)((short)pcmFrame_8b1[x] << 7);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
if (nBitsPerSample==8 && nChannels==2)
|
||||||
|
{
|
||||||
|
nRead = fread(pcmFrame_8b2, (nBitsPerSample/8), PCM_FRAME_SIZE*nChannels, fpwave);
|
||||||
|
for( x=0, y=0; y<PCM_FRAME_SIZE; y++,x+=2 )
|
||||||
|
{
|
||||||
|
// 1 - 取两个声道之左声道
|
||||||
|
speech[y] =(short)((short)pcmFrame_8b2[x+0] << 7);
|
||||||
|
// 2 - 取两个声道之右声道
|
||||||
|
//speech[y] =(short)((short)pcmFrame_8b2[x+1] << 7);
|
||||||
|
// 3 - 取两个声道的平均值
|
||||||
|
//ush1 = (short)pcmFrame_8b2[x+0];
|
||||||
|
//ush2 = (short)pcmFrame_8b2[x+1];
|
||||||
|
//ush = (ush1 + ush2) >> 1;
|
||||||
|
//speech[y] = (short)((short)ush << 7);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
if (nBitsPerSample==16 && nChannels==1)
|
||||||
|
{
|
||||||
|
nRead = fread(pcmFrame_16b1, (nBitsPerSample/8), PCM_FRAME_SIZE*nChannels, fpwave);
|
||||||
|
for(x=0; x<PCM_FRAME_SIZE; x++)
|
||||||
|
{
|
||||||
|
speech[x] = (short)pcmFrame_16b1[x+0];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
if (nBitsPerSample==16 && nChannels==2)
|
||||||
|
{
|
||||||
|
nRead = fread(pcmFrame_16b2, (nBitsPerSample/8), PCM_FRAME_SIZE*nChannels, fpwave);
|
||||||
|
for( x=0, y=0; y<PCM_FRAME_SIZE; y++,x+=2 )
|
||||||
|
{
|
||||||
|
//speech[y] = (short)pcmFrame_16b2[x+0];
|
||||||
|
speech[y] = (short)((int)((int)pcmFrame_16b2[x+0] + (int)pcmFrame_16b2[x+1])) >> 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// 如果读到的数据不是一个完整的PCM帧, 就返回0
|
||||||
|
if (nRead<PCM_FRAME_SIZE*nChannels) return 0;
|
||||||
|
|
||||||
|
return nRead;
|
||||||
|
}
|
||||||
|
|
||||||
|
// WAVE音频采样频率是8khz
|
||||||
|
// 音频样本单元数 = 8000*0.02 = 160 (由采样频率决定)
|
||||||
|
// 声道数 1 : 160
|
||||||
|
// 2 : 160*2 = 320
|
||||||
|
// bps决定样本(sample)大小
|
||||||
|
// bps = 8 --> 8位 unsigned char
|
||||||
|
// 16 --> 16位 unsigned short
|
||||||
|
int EncodeWAVEFileToAMRFile(const char* pchWAVEFilename, const char* pchAMRFileName, int nChannels, int nBitsPerSample)
|
||||||
|
{
|
||||||
|
FILE* fpwave;
|
||||||
|
FILE* fpamr;
|
||||||
|
|
||||||
|
/* input speech vector */
|
||||||
|
short speech[160];
|
||||||
|
|
||||||
|
/* counters */
|
||||||
|
int byte_counter, frames = 0, bytes = 0;
|
||||||
|
|
||||||
|
/* pointer to encoder state structure */
|
||||||
|
void *enstate;
|
||||||
|
|
||||||
|
/* requested mode */
|
||||||
|
enum Mode req_mode = MR122;
|
||||||
|
int dtx = 0;
|
||||||
|
|
||||||
|
/* bitstream filetype */
|
||||||
|
unsigned char amrFrame[MAX_AMR_FRAME_SIZE];
|
||||||
|
|
||||||
|
fpwave = fopen(pchWAVEFilename, "rb");
|
||||||
|
if (fpwave == NULL)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 创建并初始化amr文件
|
||||||
|
fpamr = fopen(pchAMRFileName, "wb");
|
||||||
|
if (fpamr == NULL)
|
||||||
|
{
|
||||||
|
fclose(fpwave);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
/* write magic number to indicate single channel AMR file storage format */
|
||||||
|
bytes = fwrite(AMR_MAGIC_NUMBER, sizeof(char), strlen(AMR_MAGIC_NUMBER), fpamr);
|
||||||
|
|
||||||
|
/* skip to pcm audio data*/
|
||||||
|
SkipToPCMAudioData(fpwave);
|
||||||
|
|
||||||
|
enstate = Encoder_Interface_init(dtx);
|
||||||
|
|
||||||
|
while(1)
|
||||||
|
{
|
||||||
|
// read one pcm frame
|
||||||
|
if (!ReadPCMFrame(speech, fpwave, nChannels, nBitsPerSample)) break;
|
||||||
|
|
||||||
|
frames++;
|
||||||
|
|
||||||
|
/* call encoder */
|
||||||
|
byte_counter = Encoder_Interface_Encode(enstate, req_mode, speech, amrFrame, 0);
|
||||||
|
|
||||||
|
bytes += byte_counter;
|
||||||
|
fwrite(amrFrame, sizeof (unsigned char), byte_counter, fpamr );
|
||||||
|
}
|
||||||
|
|
||||||
|
Encoder_Interface_exit(enstate);
|
||||||
|
|
||||||
|
fclose(fpamr);
|
||||||
|
fclose(fpwave);
|
||||||
|
|
||||||
|
return frames;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#pragma mark - Decode
|
||||||
|
//decode
|
||||||
|
void WriteWAVEFileHeader(FILE* fpwave, int nFrame)
|
||||||
|
{
|
||||||
|
char tag[10] = "";
|
||||||
|
|
||||||
|
// 1. 写RIFF头
|
||||||
|
RIFFHEADER riff;
|
||||||
|
strcpy(tag, "RIFF");
|
||||||
|
memcpy(riff.chRiffID, tag, 4);
|
||||||
|
riff.nRiffSize = 4 // WAVE
|
||||||
|
+ sizeof(XCHUNKHEADER) // fmt
|
||||||
|
+ sizeof(WAVEFORMATX) // WAVEFORMATX
|
||||||
|
+ sizeof(XCHUNKHEADER) // DATA
|
||||||
|
+ nFrame*160*sizeof(short); //
|
||||||
|
strcpy(tag, "WAVE");
|
||||||
|
memcpy(riff.chRiffFormat, tag, 4);
|
||||||
|
fwrite(&riff, 1, sizeof(RIFFHEADER), fpwave);
|
||||||
|
|
||||||
|
// 2. 写FMT块
|
||||||
|
XCHUNKHEADER chunk;
|
||||||
|
WAVEFORMATX wfx;
|
||||||
|
strcpy(tag, "fmt ");
|
||||||
|
memcpy(chunk.chChunkID, tag, 4);
|
||||||
|
chunk.nChunkSize = sizeof(WAVEFORMATX);
|
||||||
|
fwrite(&chunk, 1, sizeof(XCHUNKHEADER), fpwave);
|
||||||
|
memset(&wfx, 0, sizeof(WAVEFORMATX));
|
||||||
|
wfx.nFormatTag = 1;
|
||||||
|
wfx.nChannels = 1; // 单声道
|
||||||
|
wfx.nSamplesPerSec = 8000; // 8khz
|
||||||
|
wfx.nAvgBytesPerSec = 16000;
|
||||||
|
wfx.nBlockAlign = 2;
|
||||||
|
wfx.nBitsPerSample = 16; // 16位
|
||||||
|
fwrite(&wfx, 1, sizeof(WAVEFORMATX), fpwave);
|
||||||
|
|
||||||
|
// 3. 写data块头
|
||||||
|
strcpy(tag, "data");
|
||||||
|
memcpy(chunk.chChunkID, tag, 4);
|
||||||
|
chunk.nChunkSize = nFrame*160*sizeof(short);
|
||||||
|
fwrite(&chunk, 1, sizeof(XCHUNKHEADER), fpwave);
|
||||||
|
}
|
||||||
|
|
||||||
|
const int myround(const double x)
|
||||||
|
{
|
||||||
|
return((int)(x+0.5));
|
||||||
|
}
|
||||||
|
|
||||||
|
// 根据帧头计算当前帧大小
|
||||||
|
int caclAMRFrameSize(unsigned char frameHeader)
|
||||||
|
{
|
||||||
|
int mode;
|
||||||
|
int temp1 = 0;
|
||||||
|
int temp2 = 0;
|
||||||
|
int frameSize;
|
||||||
|
|
||||||
|
temp1 = frameHeader;
|
||||||
|
|
||||||
|
// 编码方式编号 = 帧头的3-6位
|
||||||
|
temp1 &= 0x78; // 0111-1000
|
||||||
|
temp1 >>= 3;
|
||||||
|
|
||||||
|
mode = amrEncodeMode[temp1];
|
||||||
|
|
||||||
|
// 计算amr音频数据帧大小
|
||||||
|
// 原理: amr 一帧对应20ms，那么一秒有50帧的音频数据
|
||||||
|
temp2 = myround((double)(((double)mode / (double)AMR_FRAME_COUNT_PER_SECOND) / (double)8));
|
||||||
|
|
||||||
|
frameSize = myround((double)temp2 + 0.5);
|
||||||
|
return frameSize;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 读第一个帧 - (参考帧)
|
||||||
|
// 返回值: 0-出错; 1-正确
|
||||||
|
int ReadAMRFrameFirst(FILE* fpamr, unsigned char frameBuffer[], int* stdFrameSize, unsigned char* stdFrameHeader)
|
||||||
|
{
|
||||||
|
#pragma clang diagnostic push
|
||||||
|
#pragma clang diagnostic ignored "-Wsizeof-array-argument"
|
||||||
|
#pragma clang diagnostic ignored "-Wsizeof-pointer-memaccess"
|
||||||
|
memset(frameBuffer, 0, sizeof(frameBuffer));
|
||||||
|
#pragma clang diagnostic pop
|
||||||
|
|
||||||
|
// 先读帧头
|
||||||
|
fread(stdFrameHeader, 1, sizeof(unsigned char), fpamr);
|
||||||
|
if (feof(fpamr)) return 0;
|
||||||
|
|
||||||
|
// 根据帧头计算帧大小
|
||||||
|
*stdFrameSize = caclAMRFrameSize(*stdFrameHeader);
|
||||||
|
|
||||||
|
// 读首帧
|
||||||
|
frameBuffer[0] = *stdFrameHeader;
|
||||||
|
fread(&(frameBuffer[1]), 1, (*stdFrameSize-1)*sizeof(unsigned char), fpamr);
|
||||||
|
if (feof(fpamr)) return 0;
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 返回值: 0-出错; 1-正确
|
||||||
|
int ReadAMRFrame(FILE* fpamr, unsigned char frameBuffer[], int stdFrameSize, unsigned char stdFrameHeader)
|
||||||
|
{
|
||||||
|
int bytes = 0;
|
||||||
|
unsigned char frameHeader; // 帧头
|
||||||
|
#pragma clang diagnostic push
|
||||||
|
#pragma clang diagnostic ignored "-Wsizeof-array-argument"
|
||||||
|
#pragma clang diagnostic ignored "-Wsizeof-pointer-memaccess"
|
||||||
|
memset(frameBuffer, 0, sizeof(frameBuffer));
|
||||||
|
#pragma clang diagnostic pop
|
||||||
|
|
||||||
|
// 读帧头
|
||||||
|
// 如果是坏帧(不是标准帧头)，则继续读下一个字节，直到读到标准帧头
|
||||||
|
while(1)
|
||||||
|
{
|
||||||
|
bytes = fread(&frameHeader, 1, sizeof(unsigned char), fpamr);
|
||||||
|
if (feof(fpamr)) return 0;
|
||||||
|
if (frameHeader == stdFrameHeader) break;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 读该帧的语音数据(帧头已经读过)
|
||||||
|
frameBuffer[0] = frameHeader;
|
||||||
|
bytes = fread(&(frameBuffer[1]), 1, (stdFrameSize-1)*sizeof(unsigned char), fpamr);
|
||||||
|
if (feof(fpamr)) return 0;
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 将AMR文件解码成WAVE文件
|
||||||
|
int DecodeAMRFileToWAVEFile(const char* pchAMRFileName, const char* pchWAVEFilename)
|
||||||
|
{
|
||||||
|
|
||||||
|
|
||||||
|
FILE* fpamr = NULL;
|
||||||
|
FILE* fpwave = NULL;
|
||||||
|
char magic[8];
|
||||||
|
void * destate;
|
||||||
|
int nFrameCount = 0;
|
||||||
|
int stdFrameSize;
|
||||||
|
unsigned char stdFrameHeader;
|
||||||
|
|
||||||
|
unsigned char amrFrame[MAX_AMR_FRAME_SIZE];
|
||||||
|
short pcmFrame[PCM_FRAME_SIZE];
|
||||||
|
|
||||||
|
// NSString * path = [[NSBundle mainBundle] pathForResource: @"test" ofType: @"amr"];
|
||||||
|
// fpamr = fopen([path cStringUsingEncoding:NSASCIIStringEncoding], "rb");
|
||||||
|
fpamr = fopen(pchAMRFileName, "rb");
|
||||||
|
|
||||||
|
if ( fpamr==NULL ) return 0;
|
||||||
|
|
||||||
|
// 检查amr文件头
|
||||||
|
fread(magic, sizeof(char), strlen(AMR_MAGIC_NUMBER), fpamr);
|
||||||
|
if (strncmp(magic, AMR_MAGIC_NUMBER, strlen(AMR_MAGIC_NUMBER)))
|
||||||
|
{
|
||||||
|
fclose(fpamr);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
// 创建并初始化WAVE文件
|
||||||
|
// NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
|
||||||
|
// NSString *documentPath = [paths objectAtIndex:0];
|
||||||
|
// NSString *docFilePath = [documentPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%s", pchWAVEFilename]];
|
||||||
|
// NSLog(@"documentPath=%@", documentPath);
|
||||||
|
//
|
||||||
|
// fpwave = fopen([docFilePath cStringUsingEncoding:NSASCIIStringEncoding], "wb");
|
||||||
|
fpwave = fopen(pchWAVEFilename,"wb");
|
||||||
|
|
||||||
|
WriteWAVEFileHeader(fpwave, nFrameCount);
|
||||||
|
|
||||||
|
/* init decoder */
|
||||||
|
destate = Decoder_Interface_init();
|
||||||
|
|
||||||
|
// 读第一帧 - 作为参考帧
|
||||||
|
memset(amrFrame, 0, sizeof(amrFrame));
|
||||||
|
memset(pcmFrame, 0, sizeof(pcmFrame));
|
||||||
|
ReadAMRFrameFirst(fpamr, amrFrame, &stdFrameSize, &stdFrameHeader);
|
||||||
|
|
||||||
|
// 解码一个AMR音频帧成PCM数据
|
||||||
|
Decoder_Interface_Decode(destate, amrFrame, pcmFrame, 0);
|
||||||
|
nFrameCount++;
|
||||||
|
fwrite(pcmFrame, sizeof(short), PCM_FRAME_SIZE, fpwave);
|
||||||
|
|
||||||
|
// 逐帧解码AMR并写到WAVE文件里
|
||||||
|
while(1)
|
||||||
|
{
|
||||||
|
memset(amrFrame, 0, sizeof(amrFrame));
|
||||||
|
memset(pcmFrame, 0, sizeof(pcmFrame));
|
||||||
|
if (!ReadAMRFrame(fpamr, amrFrame, stdFrameSize, stdFrameHeader)) break;
|
||||||
|
|
||||||
|
// 解码一个AMR音频帧成PCM数据 (8k-16b-单声道)
|
||||||
|
Decoder_Interface_Decode(destate, amrFrame, pcmFrame, 0);
|
||||||
|
nFrameCount++;
|
||||||
|
fwrite(pcmFrame, sizeof(short), PCM_FRAME_SIZE, fpwave);
|
||||||
|
}
|
||||||
|
printf("frame = %d\n", nFrameCount);
|
||||||
|
Decoder_Interface_exit(destate);
|
||||||
|
|
||||||
|
fclose(fpwave);
|
||||||
|
|
||||||
|
// 重写WAVE文件头
|
||||||
|
// fpwave = fopen([docFilePath cStringUsingEncoding:NSASCIIStringEncoding], "r+");
|
||||||
|
fpwave = fopen(pchWAVEFilename, "r+");
|
||||||
|
WriteWAVEFileHeader(fpwave, nFrameCount);
|
||||||
|
fclose(fpwave);
|
||||||
|
|
||||||
|
return nFrameCount;
|
||||||
|
}
|
||||||
@@ -4,12 +4,20 @@
|
|||||||
//
|
//
|
||||||
// Objective-C → Swift 桥接头文件。
|
// Objective-C → Swift 桥接头文件。
|
||||||
//
|
//
|
||||||
// 当前唯一用途：微信 OpenSDK 1.8.2（与 daoqi msext 同款，避免 2.x 强制
|
// 当前用途：
|
||||||
// Universal Link 的运维负担）。1.x SDK 是 .a 静态库 + 头文件，没有 Swift
|
// 1. 微信 OpenSDK 1.8.2（.a + .h，无 Swift module）
|
||||||
// module（不能 `import WechatOpenSDK`），必须通过 Bridging Header 导入。
|
// 2. AMR-NB ↔ WAV 文件级编解码 wrapper（amrFileCodec.{h,mm} + libopencore-amrnb.a）
|
||||||
//
|
//
|
||||||
// 详见 docs/SDK-Integration-Guide.md §A.1 / Vendor/WechatSDK/README.md。
|
// 详见：
|
||||||
|
// - docs/SDK-Integration-Guide.md §A.1
|
||||||
|
// - Vendor/WechatSDK/README.md
|
||||||
|
// - Vendor/OpenCoreAMR/README.md
|
||||||
//
|
//
|
||||||
|
|
||||||
|
// 微信 OpenSDK 1.8.2
|
||||||
#import "WXApi.h"
|
#import "WXApi.h"
|
||||||
#import "WXApiObject.h"
|
#import "WXApiObject.h"
|
||||||
|
|
||||||
|
// AMR-NB ↔ WAV 文件级编解码（Source/Audio/AMRFileCodec/，由 synchronized
|
||||||
|
// group 自动编译；Swift 侧通过 AMRCodec.swift 调用其 C 函数）
|
||||||
|
#import "amrFileCodec.h"
|
||||||
|
|||||||
Reference in New Issue
Block a user