Add AudioProcessing library based on Google's implementation of WebRTC (#1500)

general/package/Config.in

@@ -109,6 +109,7 @@ source "$BR2_EXTERNAL_GENERAL_PATH/package/vdec-openipc/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/venc-openipc/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/vtund-openipc/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/webui/Config.in"
+source "$BR2_EXTERNAL_GENERAL_PATH/package/webrtc-audio-processing-openipc/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/wifibroadcast/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/xiongmai-opensdk-xm510/Config.in"
 source "$BR2_EXTERNAL_GENERAL_PATH/package/xiongmai-osdrv-xm510/Config.in"

general/package/webrtc-audio-processing-openipc/0001-Proper-detection-of-cxxabi.h-and-execinfo.h.patch

@@ -0,0 +1,63 @@
+From b7a166acaddc4c78afa2b653e25114d9114699f3 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Sat, 6 Aug 2016 11:24:50 +0200
+Subject: [PATCH] Proper detection of cxxabi.h and execinfo.h
+
+The current code in webrtc/base/checks.cc assumes that if __GLIBCXX__ is
+defined and __UCLIBC__ is not defined, then both cxxabi.h and execinfo.h
+will be available.
+
+Unfortunately, this is not correct with the musl C library:
+
+ - It defines __GLIBCXX__
+ - It does not define __UCLIBC__ (it's not uClibc after all!)
+ - But it also doesn't provide execinfo.h
+
+Therefore, in order to make things work properly, we switch to proper
+autoconf checks for cxxabi.h and execinfo.h, and only use the backtrace
+functionality if both are provided.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ configure.ac          | 2 ++
+ webrtc/base/checks.cc | 4 ++--
+ 2 files changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index acbb3e2..ff4c752 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -45,6 +45,8 @@ AC_SUBST(GNUSTL_CFLAGS)
+ # Borrowed from gst-plugins-bad
+ AC_CHECK_HEADER(MobileCoreServices/MobileCoreServices.h, HAVE_IOS="yes", HAVE_IOS="no", [-])
+ 
++AC_CHECK_HEADERS([cxxabi.h execinfo.h])
++
+ # Based on gst-plugins-bad configure.ac and defines in
+ # <chromium source>/build/config/BUILDCONFIG.gn and
+ # webrtc/BUILD.gn
+diff --git a/webrtc/base/checks.cc b/webrtc/base/checks.cc
+index 49a31f2..05d23a6 100644
+--- a/webrtc/base/checks.cc
++++ b/webrtc/base/checks.cc
+@@ -16,7 +16,7 @@
+ #include <cstdio>
+ #include <cstdlib>
+ 
+-#if defined(__GLIBCXX__) && !defined(__UCLIBC__)
++#if defined(HAVE_CXX_ABI_H) && defined(HAVE_EXECINFO_H)
+ #include <cxxabi.h>
+ #include <execinfo.h>
+ #endif
+@@ -55,7 +55,7 @@ void PrintError(const char* format, ...) {
+ // to get usable symbols on Linux. This is copied from V8. Chromium has a more
+ // advanced stace trace system; also more difficult to copy.
+ void DumpBacktrace() {
+-#if defined(__GLIBCXX__) && !defined(__UCLIBC__)
++#if defined(HAVE_CXX_ABI_H) && defined(HAVE_EXECINFO_H)
+   void* trace[100];
+   int size = backtrace(trace, sizeof(trace) / sizeof(*trace));
+   char** symbols = backtrace_symbols(trace, size);
+-- 
+2.7.4
+

general/package/webrtc-audio-processing-openipc/Config.in

@@ -0,0 +1,21 @@
+config BR2_PACKAGE_WEBRTC_AUDIO_PROCESSING_OPENIPC_ARCH_SUPPORTS
+	bool
+	default y if BR2_aarch64 || BR2_arm || BR2_i386 || BR2_x86_64
+
+config BR2_PACKAGE_WEBRTC_AUDIO_PROCESSING_OPENIPC
+	bool "webrtc-audio-processing-openipc"
+	depends on BR2_PACKAGE_WEBRTC_AUDIO_PROCESSING_OPENIPC_ARCH_SUPPORTS
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	# pthread_condattr_setclock
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	help
+	  AudioProcessing library based on Google's implementation of
+	  WebRTC.
+
+	  http://freedesktop.org/software/pulseaudio/webrtc-audio-processing/
+
+comment "webrtc-audio-processing-openipc needs a toolchain w/ C++, NPTL, gcc >= 4.8"
+	depends on BR2_PACKAGE_WEBRTC_AUDIO_PROCESSING_OPENIPC_ARCH_SUPPORTS
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS_NPTL \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8

general/package/webrtc-audio-processing-openipc/webrtc-audio-processing-openipc.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  a0fdd938fd85272d67e81572c5a4d9e200a0c104753cb3c209ded175ce3c5dbf  webrtc-audio-processing-0.3.1.tar.xz
+sha256  9b79539028e216e813e152d45f5c1ed5fdd0554426ad50270fb03134e7082dac  COPYING

general/package/webrtc-audio-processing-openipc/webrtc-audio-processing-openipc.mk

@@ -0,0 +1,21 @@
+################################################################################
+#
+# webrtc-audio-processing-openipc
+#
+################################################################################
+
+WEBRTC_AUDIO_PROCESSING_OPENIPC_VERSION = 0.3.1
+WEBRTC_AUDIO_PROCESSING_OPENIPC_SOURCE = webrtc-audio-processing-$(WEBRTC_AUDIO_PROCESSING_OPENIPC_VERSION).tar.xz
+WEBRTC_AUDIO_PROCESSING_OPENIPC_SITE = http://freedesktop.org/software/pulseaudio/webrtc-audio-processing
+WEBRTC_AUDIO_PROCESSING_OPENIPC_INSTALL_STAGING = YES
+WEBRTC_AUDIO_PROCESSING_OPENIPC_LICENSE = BSD-3-Clause
+WEBRTC_AUDIO_PROCESSING_OPENIPC_LICENSE_FILES = COPYING
+WEBRTC_AUDIO_PROCESSING_OPENIPC_DEPENDENCIES = host-pkgconf
+# 0001-Proper-detection-of-cxxabi.h-and-execinfo.h.patch
+WEBRTC_AUDIO_PROCESSING_OPENIPC_AUTORECONF = YES
+
+ifeq ($(BR2_SOFT_FLOAT),y)
+WEBRTC_AUDIO_PROCESSING_OPENIPC_CONF_OPTS += --with-ns-mode=fixed
+endif
+
+$(eval $(autotools-package))