libimxvpuapi: add new package

This is a library for using the i.MX6 VPU. It is an alternative to
libfslvpuwrap, hosted on Github, and has an API that features several
improvements over libfslvpuwrap, which include:

* User-defined context information associated with input frames, which
is passed on to corresponding output frames (to be able to identify
which input frame produced which output frame)
* Groundwork for future DMA-BUF/BMM/ION/CMA allocator integration, using
file descriptors instead of physical addresses
* Indicators for when it is safe to try to decode frames, which is
critical in multi-threaded playback cases
* Simplified, higher-level JPEG en/decoding API, based on the VPU MJPEG
codec; useful for picture viewing without the extra boilerplate for
VPU-based en/decoding

Changelog 0.10.0 -> 0.10.1:
- add debian packaging files
- update waf to version 1.8.16
- add workaround in wscript to prevent stale pkg-config .pc files
- fix memory leak by adding missing IOFreeVirtMem() call in vpulib
backend

This patch is based on the Yocto equivalent:
https://github.com/Freescale/meta-fsl-arm/commit/e519d6c
https://github.com/Freescale/meta-fsl-arm/commit/1dd6a5b

This package has been implicitely tested through gstreamer as the
plugins rely on it for vpu decoding:
 # gst-launch-1.0 playbin uri=file:///root/tears_of_steel_1080p.webm

Tested-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -1062,6 +1062,7 @@ menu "Multimedia"
 	source "package/libfslparser/Config.in"
 	source "package/libfslvpuwrap/Config.in"
 	source "package/libhdhomerun/Config.in"
+	source "package/libimxvpuapi/Config.in"
 	source "package/libmatroska/Config.in"
 	source "package/libmms/Config.in"
 	source "package/libmpeg2/Config.in"

package/libimxvpuapi/Config.in

@@ -0,0 +1,12 @@
+config BR2_PACKAGE_LIBIMXVPUAPI
+	bool "libimxvpuapi"
+	depends on BR2_arm # Only relevant for i.MX
+	select BR2_PACKAGE_FREESCALE_IMX
+	select BR2_PACKAGE_IMX_VPU
+	help
+	  This library provides an API for using the iMX6 VPU video
+	  engine. It is an alternative to Freescale's VPU
+	  wrapper. Both the wrapper and this library are layered on
+	  top of imx-vpu, the low-level iMX6 VPU interface.
+
+	  https://github.com/Freescale/libimxvpuapi

package/libimxvpuapi/libimxvpuapi.hash

@@ -0,0 +1,2 @@
+# locally computed hash
+sha256 8d7aeed88c06fda44318cef9565ae47b86461bd309908b1103a7974ed0822a8d  libimxvpuapi-0.10.1.tar.gz

package/libimxvpuapi/libimxvpuapi.mk

@@ -0,0 +1,35 @@
+################################################################################
+#
+# libimxvpuapi
+#
+################################################################################
+
+LIBIMXVPUAPI_VERSION = 0.10.1
+LIBIMXVPUAPI_SITE = $(call github,Freescale,libimxvpuapi,$(LIBIMXVPUAPI_VERSION))
+LIBIMXVPUAPI_LICENSE = LGPLv2.1+
+LIBIMXVPUAPI_LICENSE_FILES = LICENSE
+LIBIMXVPUAPI_DEPENDENCIES = host-pkgconf host-python imx-vpu
+LIBIMXVPUAPI_INSTALL_STAGING = YES
+
+define LIBIMXVPUAPI_CONFIGURE_CMDS
+	cd $(@D); \
+	$(TARGET_CONFIGURE_OPTS) $(HOST_DIR)/usr/bin/python2 ./waf configure \
+		--prefix=/usr --libdir=/usr/lib
+endef
+
+define LIBIMXVPUAPI_BUILD_CMDS
+	cd $(@D); \
+	$(HOST_DIR)/usr/bin/python2 ./waf build -j $(PARALLEL_JOBS)
+endef
+
+define LIBIMXVPUAPI_INSTALL_STAGING_CMDS
+	cd $(@D); \
+	$(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(STAGING_DIR) install
+endef
+
+define LIBIMXVPUAPI_INSTALL_TARGET_CMDS
+	cd $(@D); \
+	$(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(TARGET_DIR) install
+endef
+
+$(eval $(generic-package))