[audioeffect] add support of device effect in config parser (c1b0fe45) · Commits · e / os / android_frameworks_av

media/libeffects/config/Android.bp

+2 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,8 @@ cc_library {
		shared_libs: [
		"liblog",
		"libtinyxml2",
		"libutils",
		"libmedia_helper",
		],

		header_libs: ["libaudio_system_headers"],

media/libeffects/config/include/media/EffectsConfig.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -76,6 +76,10 @@ struct Stream {
		using OutputStream = Stream<audio_stream_type_t>;
		using InputStream = Stream<audio_source_t>;

		struct DeviceEffects : Stream<audio_devices_t> {
		std::string address;
		};

		/** Parsed configuration.
		* Intended to be a transient structure only used for deserialization.
		* Note: Everything is copied in the configuration from the xml dom.
		@@ -89,6 +93,7 @@ struct Config {
		Effects effects;
		std::vector<OutputStream> postprocess;
		std::vector<InputStream> preprocess;
		std::vector<DeviceEffects> deviceprocess;
		};

		/** Result of `parse(const char)` /

media/libeffects/config/src/EffectsConfig.cpp

+32 −3

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@
		#include <log/log.h>

		#include <media/EffectsConfig.h>
		#include <media/TypeConverter.h>

		using namespace tinyxml2;

		@@ -134,6 +135,11 @@ bool stringToStreamType(const char streamName, Type type)
		return false;
		}

		template <>
		bool stringToStreamType(const char streamName, audio_devices_t type) {
		return deviceFromString(streamName, *type);
		}

		/** Parse a library xml note and push the result in libraries or return false on failure. */
		bool parseLibrary(const XMLElement& xmlLibrary, Libraries* libraries) {
		const char* name = xmlLibrary.Attribute("name");
		@@ -221,7 +227,7 @@ bool parseEffect(const XMLElement& xmlEffect, Libraries& libraries, Effects* eff
		return true;
		}

		/** Parse an stream from an xml element describing it.
		/** Parse an <Output\|Input>stream or a device from an xml element describing it.
		* @return true and pushes the stream in streams on success,
		* false on failure. */
		template <class Stream>
		@@ -233,14 +239,14 @@ bool parseStream(const XMLElement& xmlStream, Effects& effects, std::vector<Stre
		}
		Stream stream;
		if (!stringToStreamType(streamType, &stream.type)) {
		ALOGE("Invalid stream type %s: %s", streamType, dump(xmlStream));
		ALOGE("Invalid <stream\|device> type %s: %s", streamType, dump(xmlStream));
		return false;
		}

		for (auto& xmlApply : getChildren(xmlStream, "apply")) {
		const char* effectName = xmlApply.get().Attribute("effect");
		if (effectName == nullptr) {
		ALOGE("stream/apply must have reference an effect: %s", dump(xmlApply));
		ALOGE("<stream\|device>/apply must have reference an effect: %s", dump(xmlApply));
		return false;
		}
		auto* effect = findByName(effectName, effects);
		@@ -254,6 +260,21 @@ bool parseStream(const XMLElement& xmlStream, Effects& effects, std::vector<Stre
		return true;
		}

		bool parseDeviceEffects(
		const XMLElement& xmlDevice, Effects& effects, std::vector<DeviceEffects>* deviceEffects) {

		const char* address = xmlDevice.Attribute("address");
		if (address == nullptr) {
		ALOGE("device must have an address: %s", dump(xmlDevice));
		return false;
		}
		if (!parseStream(xmlDevice, effects, deviceEffects)) {
		return false;
		}
		deviceEffects->back().address = address;
		return true;
		}

		/** Internal version of the public parse(const char* path) where path always exist. */
		ParsingResult parseWithPath(std::string&& path) {
		XMLDocument doc;
		@@ -298,6 +319,14 @@ ParsingResult parseWithPath(std::string&& path) {
		registerFailure(parseStream(xmlStream, config->effects, &config->postprocess));
		}
		}

		// Parse device effect chains
		for (auto& xmlDeviceEffects : getChildren(xmlConfig, "deviceEffects")) {
		for (auto& xmlDevice : getChildren(xmlDeviceEffects, "devicePort")) {
		registerFailure(
		parseDeviceEffects(xmlDevice, config->effects, &config->deviceprocess));
		}
		}
		}
		return {std::move(config), nbSkippedElements, std::move(path)};
		}

media/libeffects/data/audio_effects.xml

+27 −0

Original line number	Diff line number	Diff line
		@@ -99,4 +99,31 @@
		</postprocess>
		-->

		<!-- Device pre/post processor configurations.
		The device pre/post processor configuration is described in a deviceEffects element and
		consists in a list of elements each describing pre/post proecessor settings for a given
		device or "devicePort".
		Each devicePort element has a "type" attribute corresponding to the device type (e.g.
		speaker, bus), an "address" attribute corresponding to the device address and contains a
		list of "apply" elements indicating one effect to apply.
		If the device is a source, only pre processing effects are expected, if the
		device is a sink, only post processing effects are expected.
		The effect to apply is designated by its name in the "effects" elements.
		The effect will be enabled by default and the audio framework will automatically add
		and activate the effect if the given port is involved in an audio patch.
		If the patch is "HW", the effect must be HW accelerated.

		<deviceEffects>
		<devicePort type="AUDIO_DEVICE_OUT_BUS" address="BUS00_USAGE_MAIN">
		<apply effect="equalizer"/>
		</devicePort>
		<devicePort type="AUDIO_DEVICE_OUT_BUS" address="BUS04_USAGE_VOICE">
		<apply effect="volume"/>
		</devicePort>
		<devicePort type="AUDIO_DEVICE_IN_BUILTIN_MIC" address="bottom">
		<apply effect="agc"/>
		</devicePort>
		</deviceEffects>
		-->

		</audio_effects_conf>