New effect library API

Moved and renamed media/EffectApi.h to hardware/audio_effect.h
Modified the effect library API to expose a library info structure
containing an interface functions table.
Also removed enums for audio channels, audio format and devices
from effect API and use values from system/audio.h instead.

Modified effects factory to support new library interface format and
load libraries and efffects listed in audio_effects.conf file.
The file audio_effects.conf is first loaded from /vendor/etc and
then from /system/etc/audio_effects.conf if not found.

Modified existing effect libraries to implement the new library interface.

Change-Id: Ie52351e071b6d352fa2fbc06c3846686f8c45df9

1 files changed, 57 insertions, 0 deletions

diff --git a/media/libeffects/data/audio_effects.conf b/media/libeffects/data/audio_effects.conf
new file mode 100644
index 0000000..e6a7b37
--- /dev/null
+++ b/media/libeffects/data/audio_effects.conf
@@ -0,0 +1,57 @@
+# List of effect libraries to load. Each library element must contain a "path" element
+# giving the full path of the library .so file.
+libraries {
+  bundle {
+    path /system/lib/soundfx/libbundlewrapper.so
+  }
+  reverb {
+    path /system/lib/soundfx/libreverbwrapper.so
+  }
+  visualizer {
+    path /system/lib/soundfx/libvisualizer.so
+  }
+}
+
+# list of effects to load. Each effect element must contain a "library" and a "uuid" element.
+# The value of the "library" element must correspond to the name of one library element in the
+# "libraries" element.
+# The name of the effect element is indicative, only the value of the "uuid" element
+# designates the effect.
+effects {
+  bassboost {
+    library bundle
+    uuid 8631f300-72e2-11df-b57e-0002a5d5c51b
+  }
+  virtualizer {
+    library bundle
+    uuid 1d4033c0-8557-11df-9f2d-0002a5d5c51b
+  }
+  equalizer {
+    library bundle
+    uuid ce772f20-847d-11df-bb17-0002a5d5c51b
+  }
+  volume {
+    library bundle
+    uuid 119341a0-8469-11df-81f9- 0002a5d5c51b
+  }
+  reverb_env_aux {
+    library reverb
+    uuid 4a387fc0-8ab3-11df-8bad- 0002a5d5c51b
+  }
+  reverb_env_ins {
+    library reverb
+    uuid c7a511a0-a3bb-11df-860e-0002a5d5c51b
+  }
+  reverb_pre_aux {
+    library reverb
+    uuid f29a1400-a3bb-11df-8ddc-0002a5d5c51b
+  }
+  reverb_pre_ins {
+    library reverb
+    uuid 172cdf00-a3bc-11df-a72f-0002a5d5c51b
+  }
+  visualizer {
+    library visualizer
+    uuid d069d9e0-8329-11df-9168-0002a5d5c51b
+  }
+}