To avoid `WrongConstant` failures with methods that expect
`C.@PcmEncoding`, `OUTPUT_PCM_ENCODING` now points to the constant in
`C` instead of `AudioFormat`.
#cherrypick
PiperOrigin-RevId: 670251463
In order to support building with `gradle` a new `build.gradle` file was added together with `Android.mk`, `Application.mk`, and `libiamf.mk` necessary for local builds with NDK.
After this change, IAMF files may also be played in the ExoPlayer demo built locally (without blaze).
PiperOrigin-RevId: 664841684
Moving this field to `IamfDecoder` instead of `iamf_jni` allows multiple instances of the IAMF decoder with possibly different configurations at the same time.
PiperOrigin-RevId: 662548068
Check if the output device supports spatialization for the requested output format. If so, return a stream decoded for 6 channels in a 5.1 layout. Otherwise, return a stream decoded for 2 channels in a binaural layout.
PiperOrigin-RevId: 662546818
Instead of hard-coding values in multiple files, all default values are declared in `IamfDecoder`. Additionally, the max number of frames used for output buffer initialisation is fetched from `libiamf` native functions.
PiperOrigin-RevId: 658772175
