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88 lines
3.7 KiB
Markdown
88 lines
3.7 KiB
Markdown
# Installing for iOS development
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 All versions starting from iOS 6 are supported
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### Prerequisites
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For iOS development you need to download Xcode and the iOS SDK. Xcode
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can be found at the App Store or
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[here](https://developer.apple.com/devcenter/ios/index.action#downloads)
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and the iOS SDK, if it is not already included in your version of Xcode,
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can be downloaded from Xcode's preferences menu under the downloads tab.
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The minimum required iOS version is 6.0. The minimum required version of
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Xcode is 4, but 7.3 is recommended.
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In case you are not familiar with iOS, Objective-C or Xcode, we
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recommend taking a look at the available documentation at Apple's
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website.
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[This](http://developer.apple.com/library/ios/#DOCUMENTATION/iPhone/Conceptual/iPhone101/Articles/00_Introduction.html) can be a good starting point.
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## Download and install GStreamer binaries
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GStreamer binary installer can be found at:
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[https://gstreamer.freedesktop.org/data/pkg/ios/](https://gstreamer.freedesktop.org/data/pkg/ios/)
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Double click the package file and follow the instructions presented by
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the install wizard. In case the system complains about the package not
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being signed, you can control-click it and open to start the
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installation. When you do this, it will warn you, but there is an option
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to install anyway. Otherwise you can go to System Preferences → Security
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and Privacy → General and select the option to allow installation of
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packages from "anywhere".
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The GStreamer SDK installs itself in your home directory, so it is
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available only to the user that installed it. The SDK library is
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installed to `~/Library/Developer/GStreamer/iPhone.sdk`. Inside this
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directory there is the GStreamer.framework that contains the libs,
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headers and resources, and there is a `Templates` directory that has
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Xcode application templates for GStreamer development. Those templates
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are also copied to `~/Library/Developer/Xcode/Templates` during
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installation so that Xcode can find them.
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### Configure your development environment
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GStreamer is written in C, and the iOS API uses mostly Objective-C (and
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C for some parts), but this should cause no problems as those languages
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interoperate freely. You can mix both in the same source code, for
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example.
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#### Building the tutorials
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The tutorials code are in the
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[gst-docs](https://cgit.freedesktop.org/gstreamer/gst-docs/) in the
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`tutorials/xcode iOS` folder. We recommend that you open the project
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in Xcode, take a look at the sources and build them. This should
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confirm that the installation works and give some insight on how
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simple it is to mix Objective-C and C code.
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#### Creating new projects
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After installation, when creating a new Xcode project, you should see
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the GStreamer project templates under the `Templates` category. OS X and
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iOS have a different way of organizing libraries headers and binaries.
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They are grouped into Frameworks, and that's how we ship GStreamer and
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its dependencies for iOS (and OS X). Due to this difference from
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traditional linux development, we strongly recommend using the SDK
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templates, as they set a few variables on your project that allows Xcode
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to find, use and link GStreamer just like in traditional linux
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development. For example, if you don't use the templates, you'll have to
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use:
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```
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#include <GStreamer/gst/gst.h>
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```
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instead of the usual:
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```
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#include <gst/gst.h>
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```
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Among some other things the template does, this was a decision made to
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keep development consistent across all the platforms the SDK supports.
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Once a project has been created using a GStreamer SDK Template, it is
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ready to build and run. All necessary infrastructure is already in
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place. To understand what files have been created and how they interact,
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take a look at the [iOS tutorials](tutorials-ios.md).
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