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Parse LED mappings in keylayout files 

Change-Id: I6bc3760341868015f054d9866e2616a312da94e0
This commit is contained in:
Michael Wright 2013-10-17 17:35:53 -07:00
parent b02579b04d
commit 74bdd2e7ce
6 changed files with 150 additions and 4 deletions
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25
include/input/Input.h
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@ -65,6 +65,31 @@ enum {
AINPUT_SOURCE_SWITCH = 0x80000000,
};
enum {
/**
* Constants for LEDs. Hidden from the API since we don't actually expose a way to interact
* with LEDs to developers
*
* NOTE: If you add LEDs here, you must also add them to KeycodeLabels.h
*/
ALED_NUM_LOCK = 0x00,
ALED_CAPS_LOCK = 0x01,
ALED_SCROLL_LOCK = 0x02,
ALED_COMPOSE = 0x03,
ALED_KANA = 0x04,
ALED_SLEEP = 0x05,
ALED_SUSPEND = 0x06,
ALED_MUTE = 0x07,
ALED_MISC = 0x08,
ALED_MAIL = 0x09,
ALED_CHARGING = 0x0a,
ALED_CONTROLLER_1 = 0x10,
ALED_CONTROLLER_2 = 0x11,
ALED_CONTROLLER_3 = 0x12,
ALED_CONTROLLER_4 = 0x13,
};
/*
* SystemUiVisibility constants from View.
*/

10
include/input/KeyLayoutMap.h
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@ -67,6 +67,8 @@ public:
status_t mapKey(int32_t scanCode, int32_t usageCode,
int32_t* outKeyCode, uint32_t* outFlags) const;
status_t findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const;
status_t findScanCodeForLed(int32_t ledCode, int32_t* outScanCode) const;
status_t findUsageCodeForLed(int32_t ledCode, int32_t* outUsageCode) const;
status_t mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const;
@ -79,9 +81,16 @@ private:
uint32_t flags;
};
struct Led {
int32_t ledCode;
};
KeyedVector<int32_t, Key> mKeysByScanCode;
KeyedVector<int32_t, Key> mKeysByUsageCode;
KeyedVector<int32_t, AxisInfo> mAxes;
KeyedVector<int32_t, Led> mLedsByScanCode;
KeyedVector<int32_t, Led> mLedsByUsageCode;
KeyLayoutMap();
@ -99,6 +108,7 @@ private:
private:
status_t parseKey();
status_t parseAxis();
status_t parseLed();
};
};

10
include/input/Keyboard.h
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@ -94,17 +94,23 @@ extern int32_t getKeyCodeByLabel(const char* label);
extern uint32_t getKeyFlagByLabel(const char* label);
/**
* Gets a axis by its short form label, eg. "X".
* Gets an axis by its short form label, eg. "X".
* Returns -1 if unknown.
*/
extern int32_t getAxisByLabel(const char* label);
/**
* Gets a axis label by its id.
* Gets an axis label by its id.
* Returns NULL if unknown.
*/
extern const char* getAxisLabel(int32_t axisId);
/**
* Gets an LED by its short form label, eg. "CAPS_LOCK".
* Returns -1 if unknown.
*/
extern int32_t getLedByLabel(const char* label);
/**
* Updates a meta state field when a key is pressed or released.
*/

22
include/input/KeycodeLabels.h
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@ -319,4 +319,26 @@ static const KeycodeLabel AXES[] = {
{ NULL, -1 }
};
static const KeycodeLabel LEDS[] = {
{ "NUM_LOCK", 0x00 },
{ "CAPS_LOCK", 0x01 },
{ "SCROLL_LOCK", 0x02 },
{ "COMPOSE", 0x03 },
{ "KANA", 0x04 },
{ "SLEEP", 0x05 },
{ "SUSPEND", 0x06 },
{ "MUTE", 0x07 },
{ "MISC", 0x08 },
{ "MAIL", 0x09 },
{ "CHARGING", 0x0a },
{ "CONTROLLER_1", 0x10 },
{ "CONTROLLER_2", 0x11 },
{ "CONTROLLER_3", 0x12 },
{ "CONTROLLER_4", 0x13 },
// NOTE: If you add new LEDs here, you must also add them to Input.h
{ NULL, -1 }
};
#endif // _LIBINPUT_KEYCODE_LABELS_H

83
libs/input/KeyLayoutMap.cpp
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@ -150,6 +150,40 @@ status_t KeyLayoutMap::mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const {
return NO_ERROR;
}
status_t KeyLayoutMap::findScanCodeForLed(int32_t ledCode, int32_t* outScanCode) const {
const size_t N = mLedsByScanCode.size();
for (size_t i = 0; i < N; i++) {
if (mLedsByScanCode.valueAt(i).ledCode == ledCode) {
*outScanCode = mLedsByScanCode.keyAt(i);
#if DEBUG_MAPPING
ALOGD("findScanCodeForLed: ledCode=%d, scanCode=%d.", ledCode, *outScanCode);
#endif
return NO_ERROR;
}
}
#if DEBUG_MAPPING
ALOGD("findScanCodeForLed: ledCode=%d ~ Not found.", ledCode);
#endif
return NAME_NOT_FOUND;
}
status_t KeyLayoutMap::findUsageCodeForLed(int32_t ledCode, int32_t* outUsageCode) const {
const size_t N = mLedsByUsageCode.size();
for (size_t i = 0; i < N; i++) {
if (mLedsByUsageCode.valueAt(i).ledCode == ledCode) {
*outUsageCode = mLedsByUsageCode.keyAt(i);
#if DEBUG_MAPPING
ALOGD("findUsageForLed: ledCode=%d, usage=%x.", ledCode, *outUsageCode);
#endif
return NO_ERROR;
}
}
#if DEBUG_MAPPING
ALOGD("findUsageForLed: ledCode=%d ~ Not found.", ledCode);
#endif
return NAME_NOT_FOUND;
}
// --- KeyLayoutMap::Parser ---
@ -179,6 +213,10 @@ status_t KeyLayoutMap::Parser::parse() {
mTokenizer->skipDelimiters(WHITESPACE);
status_t status = parseAxis();
if (status) return status;
} else if (keywordToken == "led") {
mTokenizer->skipDelimiters(WHITESPACE);
status_t status = parseLed();
if (status) return status;
} else {
ALOGE("%s: Expected keyword, got '%s'.", mTokenizer->getLocation().string(),
keywordToken.string());
@ -215,8 +253,7 @@ status_t KeyLayoutMap::Parser::parseKey() {
mapUsage ? "usage" : "scan code", codeToken.string());
return BAD_VALUE;
}
KeyedVector<int32_t, Key>& map =
mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode;
KeyedVector<int32_t, Key>& map = mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode;
if (map.indexOfKey(code) >= 0) {
ALOGE("%s: Duplicate entry for key %s '%s'.", mTokenizer->getLocation().string(),
mapUsage ? "usage" : "scan code", codeToken.string());
@ -364,4 +401,46 @@ status_t KeyLayoutMap::Parser::parseAxis() {
return NO_ERROR;
}
status_t KeyLayoutMap::Parser::parseLed() {
String8 codeToken = mTokenizer->nextToken(WHITESPACE);
bool mapUsage = false;
if (codeToken == "usage") {
mapUsage = true;
mTokenizer->skipDelimiters(WHITESPACE);
codeToken = mTokenizer->nextToken(WHITESPACE);
}
char* end;
int32_t code = int32_t(strtol(codeToken.string(), &end, 0));
if (*end) {
ALOGE("%s: Expected led %s number, got '%s'.", mTokenizer->getLocation().string(),
mapUsage ? "usage" : "scan code", codeToken.string());
return BAD_VALUE;
}
KeyedVector<int32_t, Led>& map = mapUsage ? mMap->mLedsByUsageCode : mMap->mLedsByScanCode;
if (map.indexOfKey(code) >= 0) {
ALOGE("%s: Duplicate entry for led %s '%s'.", mTokenizer->getLocation().string(),
mapUsage ? "usage" : "scan code", codeToken.string());
return BAD_VALUE;
}
mTokenizer->skipDelimiters(WHITESPACE);
String8 ledCodeToken = mTokenizer->nextToken(WHITESPACE);
int32_t ledCode = getLedByLabel(ledCodeToken.string());
if (ledCode < 0) {
ALOGE("%s: Expected LED code label, got '%s'.", mTokenizer->getLocation().string(),
ledCodeToken.string());
return BAD_VALUE;
}
#if DEBUG_PARSER
ALOGD("Parsed led %s: code=%d, ledCode=%d.",
mapUsage ? "usage" : "scan code", code, ledCode);
#endif
Led led;
led.ledCode = ledCode;
map.add(code, led);
return NO_ERROR;
}
};

4
libs/input/Keyboard.cpp
View File

@ -203,6 +203,10 @@ const char* getAxisLabel(int32_t axisId) {
return lookupLabelByValue(axisId, AXES);
}
int32_t getLedByLabel(const char* label) {
return int32_t(lookupValueByLabel(label, LEDS));
}
static int32_t setEphemeralMetaState(int32_t mask, bool down, int32_t oldMetaState) {
int32_t newMetaState;
if (down) {