audio/lpcnet: New port: Neural Net speech coding

Needed for freedv update see:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264769

Experimental version of LPCNet that has been used to develop FreeDV 2020
- a HF radio Digial Voice mode for over the air experimentation with
Neural Net speech coding. Possibly the first use of Neural Net speech
coding in real world operation.

5 files changed, 133 insertions, 0 deletions

diff --git a/audio/lpcnet/Makefile b/audio/lpcnet/Makefile
new file mode 100644
index 000000000000..9ec36f347f5f
--- /dev/null
+++ b/audio/lpcnet/Makefile
@@ -0,0 +1,27 @@
+PORTNAME=	lpcnet
+PORTVERSION=	20210629
+CATEGORIES=	audio hamradio
+MASTER_SITES=	http://rowetel.com/downloads/deep/:main \
+		GH:sub
+DISTFILES=	lpcnet_191005_v1.0.tgz:main \
+		${PORTNAME}-${PORTVERSION}${EXTRACT_SUFX}:sub
+
+MAINTAINER=	hamradio@FreeBSD.org
+COMMENT=	Neural Net speech coding
+
+LICENSE=	LGPL21
+
+LIB_DEPENDS=	libcodec2.so:audio/codec2
+
+USES=		cmake compiler:c++11-lib
+CMAKE_ARGS+=	-DMACHINE_CPU:STRING="${MACHINE_CPU}" \
+				-DWRKDIR:STRING=${WRKDIR}
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	drowe67
+GH_PROJECT=	LPCNet
+GH_TAGNAME=	0dc5935
+
+.include <bsd.port.pre.mk>
+.include <bsd.cpu.mk>
+.include <bsd.port.post.mk>
diff --git a/audio/lpcnet/distinfo b/audio/lpcnet/distinfo
new file mode 100644
index 000000000000..a0b495a1716d
--- /dev/null
+++ b/audio/lpcnet/distinfo
@@ -0,0 +1,7 @@
+TIMESTAMP = 1641483640
+SHA256 (lpcnet_191005_v1.0.tgz) = 509440924751fdd87ffaa5683ee3dddd937af5c833b9104ccce65d51614926c8
+SIZE (lpcnet_191005_v1.0.tgz) = 18396516
+SHA256 (lpcnet-20210629.tar.gz) = 31a687ac5e822c6c2cf75fe8e7371a5cd834d692635a802ec8fd33dc340d9cf2
+SIZE (lpcnet-20210629.tar.gz) = 33016759
+SHA256 (drowe67-LPCNet-20210629-0dc5935_GH0.tar.gz) = 31a687ac5e822c6c2cf75fe8e7371a5cd834d692635a802ec8fd33dc340d9cf2
+SIZE (drowe67-LPCNet-20210629-0dc5935_GH0.tar.gz) = 33016759
diff --git a/audio/lpcnet/files/patch-CMakeLists.txt b/audio/lpcnet/files/patch-CMakeLists.txt
new file mode 100644
index 000000000000..d11722280aa1
--- /dev/null
+++ b/audio/lpcnet/files/patch-CMakeLists.txt
@@ -0,0 +1,86 @@
+--- CMakeLists.txt.orig	2021-06-29 09:04:36 UTC
++++ CMakeLists.txt
+@@ -87,15 +87,32 @@ message(STATUS "Host system arch is: ${CMAKE_SYSTEM_PR
+ # Detection of available CPU optimizations
+ if(NOT DISABLE_CPU_OPTIMIZATION)
+     if(UNIX AND NOT APPLE)
+-        message(STATUS "Looking for available CPU optimizations on Linux/BSD system...")
+-        execute_process(COMMAND grep -c "avx2" /proc/cpuinfo
+-            OUTPUT_VARIABLE AVX2)
+-        execute_process(COMMAND grep -c "avx " /proc/cpuinfo
+-            OUTPUT_VARIABLE AVX)
+-        execute_process(COMMAND grep -c "sse4_1 " /proc/cpuinfo
+-            OUTPUT_VARIABLE SSE)
+-        execute_process(COMMAND grep -c "neon" /proc/cpuinfo
+-            OUTPUT_VARIABLE NEON)
++        if ( ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
++            message(STATUS "Looking for available CPU optimizations on FreeBSD system...")
++	    message (STATUS "MACHINE_CPU = ${MACHINE_CPU}")
++            if (MACHINE_CPU MATCHES  "avx")
++                set(AVX TRUE)
++           endif()
++           if (MACHINE_CPU MATCHES "avx2")
++               set(AVX2 TRUE)
++           endif()
++           if (MACHINE_CPU MATCHES "sse")
++	       set(SSE TRUE)
++           endif()
++           if (MACHINE_CPU MATCHES  "neon")
++               set(NEON TRUE)
++           endif()
++        else()
++            message(STATUS "Looking for available CPU optimizations on Linux system...")
++            execute_process(COMMAND grep -c "avx2" /proc/cpuinfo
++                OUTPUT_VARIABLE AVX2)
++            execute_process(COMMAND grep -c "avx " /proc/cpuinfo
++                OUTPUT_VARIABLE AVX)
++            execute_process(COMMAND grep -c "sse4_1 " /proc/cpuinfo
++                OUTPUT_VARIABLE SSE)
++            execute_process(COMMAND grep -c "neon" /proc/cpuinfo
++                OUTPUT_VARIABLE NEON)
++        endif()
+     elseif(APPLE)
+         if(BUILD_OSX_UNIVERSAL)
+             # Presume AVX/AVX2 are enabled on the x86 side. The ARM side will auto-enable
+@@ -140,36 +157,12 @@ if(${NEON} OR ${NEON} GREATER 0)
+ endif()
+ 
+ # grab latest NN model (or substitute your own)
+-set(LPCNET_ROOT http://rowetel.com/downloads/deep/)
+-set(LPCNET_FILE lpcnet_191005_v1.0.tgz)
+-set(LPCNET_URL ${LPCNET_ROOT}${LPCNET_FILE})
++# retrieved by port
++#set(LPCNET_ROOT http://rowetel.com/downloads/deep/)
++#set(LPCNET_FILE lpcnet_191005_v1.0.tgz)
++#set(LPCNET_URL ${LPCNET_ROOT}${LPCNET_FILE})
+ 
+-if(EXISTS ${CMAKE_BINARY_DIR}/${LPCNET_FILE})
+-    set(lpcnet_SOURCE_DIR ${CMAKE_BINARY_DIR}/src)
+-    file(MAKE_DIRECTORY ${lpcnet_SOURCE_DIR})
+-    execute_process(COMMAND tar -xzf ${CMAKE_BINARY_DIR}/${LPCNET_FILE} -C ${CMAKE_BINARY_DIR}/src)
+-
+-# Work around not having the FetchContent module.
+-elseif(CMAKE_VERSION VERSION_LESS 3.11.4)
+-    set(lpcnet_SOURCE_DIR ${CMAKE_BINARY_DIR}/src)
+-    if(NOT EXISTS ${lpcnet_SOURCE_DIR})
+-        file(DOWNLOAD ${LPCNET_URL}
+-            ${CMAKE_BINARY_DIR}/${LPCNET_FILE}
+-            SHOW_PROGRESS
+-        )
+-        file(MAKE_DIRECTORY ${lpcnet_SOURCE_DIR})
+-        execute_process(COMMAND tar -xzf ${CMAKE_BINARY_DIR}/${LPCNET_FILE} -C ${CMAKE_BINARY_DIR}/src)
+-    endif()
+-else()
+-    include(FetchContent)
+-    FetchContent_Declare(
+-        lpcnet
+-        URL ${LPCNET_URL})
+-    FetchContent_GetProperties(lpcnet)
+-    if(NOT lpcnet_POPULATED)
+-        FetchContent_Populate(lpcnet)
+-    endif()
+-endif()
++set(lpcnet_SOURCE_DIR ${WRKDIR})
+ 
+ # Find codec2
+ if(CODEC2_BUILD_DIR)
diff --git a/audio/lpcnet/pkg-descr b/audio/lpcnet/pkg-descr
new file mode 100644
index 000000000000..86c8314a1260
--- /dev/null
+++ b/audio/lpcnet/pkg-descr
@@ -0,0 +1,6 @@
+Experimental version of LPCNet that has been used to develop FreeDV 2020
+- a HF radio Digial Voice mode for over the air experimentation with
+Neural Net speech coding. Possibly the first use of Neural Net speech
+coding in real world operation.
+
+WWW: http://freedv.org/tiki-index.php
diff --git a/audio/lpcnet/pkg-plist b/audio/lpcnet/pkg-plist
new file mode 100644
index 000000000000..54460bd5512e
--- /dev/null
+++ b/audio/lpcnet/pkg-plist
@@ -0,0 +1,7 @@
+bin/lpcnet_dec
+bin/lpcnet_enc
+include/lpcnet/lpcnet_freedv.h
+lib/cmake/lpcnetfreedv/lpcnetfreedv-config-%%CMAKE_BUILD_TYPE%%.cmake
+lib/cmake/lpcnetfreedv/lpcnetfreedv-config.cmake
+lib/liblpcnetfreedv.so
+lib/liblpcnetfreedv.so.0.2