am 99d6295f: Merge "Enable lcd backlight in the emulator."
* commit '99d6295f69532f24371a40c27671ac6cbc6b1ded': Enable lcd backlight in the emulator.
This commit is contained in:
David Turner
29
tools/emulator/system/lights/Android.mk
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29
tools/emulator/system/lights/Android.mk
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@@ -0,0 +1,29 @@
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# Copyright (C) 2011 The Android Open Source Project.
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#
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# Original code licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this software except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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LOCAL_PATH := $(call my-dir)
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ifneq ($(TARGET_PRODUCT),sim)
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# HAL module implemenation, not prelinked and stored in
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# hw/<LIGHTS_HARDWARE_MODULE_ID>.<ro.hardware>.so
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include $(CLEAR_VARS)
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LOCAL_PRELINK_MODULE := false
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LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
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LOCAL_SHARED_LIBRARIES := liblog libcutils
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LOCAL_SRC_FILES := lights_qemu.c
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LOCAL_MODULE := lights.goldfish
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LOCAL_MODULE_TAGS := debug
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LOCAL_CFLAGS += -DLIGHT_BACKLIGHT
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include $(BUILD_SHARED_LIBRARY)
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endif
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213
tools/emulator/system/lights/lights_qemu.c
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tools/emulator/system/lights/lights_qemu.c
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/* Copyright (C) 2011 The Android Open Source Project
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*
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* Original code licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this software except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This implements a lights hardware library for the Android emulator.
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* the following code should be built as a shared library that will be
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* placed into /system/lib/hw/lights.goldfish.so
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*
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* It will be loaded by the code in hardware/libhardware/hardware.c
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* which is itself called from
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* ./frameworks/base/services/jni/com_android_server_HardwareService.cpp
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*/
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#ifdef LOG_TAG
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#undef LOG_TAG
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#define LOG_TAG "Lights"
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#endif
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/* we connect with the emulator through the "hw-control" qemud service */
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#define LIGHTS_SERVICE_NAME "hw-control"
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#include <cutils/log.h>
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <hardware/lights.h>
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#include <hardware/qemud.h>
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/* Set to 1 to enable debug messages to the log */
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#define DEBUG 0
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#if DEBUG
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# define D(...) LOGD(__VA_ARGS__)
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#else
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# define D(...) do{}while(0)
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#endif
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#define E(...) LOGE(__VA_ARGS__)
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/* Get brightness(0~255) from state. */
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static int
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rgb_to_brightness( struct light_state_t const* state )
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{
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int color = state->color & 0x00ffffff;
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return ((77 * ((color >> 16) & 0x00ff))
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+ (150 * ((color >> 8) & 0x00ff)) + (29 * (color & 0x00ff))) >> 8;
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}
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/* set backlight brightness by LIGHTS_SERVICE_NAME service. */
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static int
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set_light_backlight( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* Get Lights service. */
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int fd = qemud_channel_open( LIGHTS_SERVICE_NAME );
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if (fd < 0) {
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E( "%s: no qemud connection", __FUNCTION__ );
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return -1;
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}
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D( "%s: On/Off %d/%d flashMode %d brightnessMode %d"
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" RGB = 0x%08x", __func__,
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state->flashOnMS,
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state->flashOffMS,
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state->flashMode,
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state->brightnessMode,
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state->color );
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int brightness = rgb_to_brightness( state );
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char buffer[64];
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snprintf( buffer, sizeof(buffer), "power:light:brightness:lcd_backlight:%d", brightness );
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D( "%s: lcd_backlight command: %s", __FUNCTION__, buffer );
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/* send backlight command to perform the backlight setting. */
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if (qemud_channel_send( fd, buffer, -1 ) < 0) {
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E( "%s: could not query lcd_backlight: %s", __FUNCTION__, strerror(errno) );
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close( fd );
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return -1;
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}
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close( fd );
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return 0;
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}
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static int
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set_light_buttons( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* @Waiting for later implementation. */
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D( "%s: Not implemented.", __FUNCTION__ );
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return 0;
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}
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static int
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set_light_battery( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* @Waiting for later implementation. */
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D( "%s: Not implemented.", __FUNCTION__ );
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return 0;
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}
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static int
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set_light_keyboard( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* @Waiting for later implementation. */
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D( "%s: Not implemented.", __FUNCTION__ );
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return 0;
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}
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static int
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set_light_notifications( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* @Waiting for later implementation. */
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D( "%s: Not implemented.", __FUNCTION__ );
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return 0;
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}
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static int
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set_light_attention( struct light_device_t* dev, struct light_state_t const* state )
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{
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/* @Waiting for later implementation. */
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D( "%s: Not implemented.", __FUNCTION__ );
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return 0;
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}
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/** Close the lights device */
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static int
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close_lights( struct light_device_t *dev )
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{
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free( dev );
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return 0;
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}
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/**
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* module methods
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*/
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/** Open a new instance of a lights device using name */
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static int
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open_lights( const struct hw_module_t* module, char const *name,
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struct hw_device_t **device )
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{
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void* set_light;
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if (0 == strcmp( LIGHT_ID_BACKLIGHT, name )) {
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set_light = set_light_backlight;
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} else if (0 == strcmp( LIGHT_ID_KEYBOARD, name )) {
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set_light = set_light_keyboard;
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} else if (0 == strcmp( LIGHT_ID_BUTTONS, name )) {
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set_light = set_light_buttons;
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} else if (0 == strcmp( LIGHT_ID_BATTERY, name )) {
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set_light = set_light_battery;
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} else if (0 == strcmp( LIGHT_ID_NOTIFICATIONS, name )) {
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set_light = set_light_notifications;
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} else if (0 == strcmp( LIGHT_ID_ATTENTION, name )) {
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set_light = set_light_attention;
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} else {
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D( "%s: %s light isn't supported yet.", __FUNCTION__, name );
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return -EINVAL;
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}
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struct light_device_t *dev = malloc( sizeof(struct light_device_t) );
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if (dev == NULL) {
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return -EINVAL;
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}
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memset( dev, 0, sizeof(*dev) );
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dev->common.tag = HARDWARE_DEVICE_TAG;
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dev->common.version = 0;
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dev->common.module = (struct hw_module_t*)module;
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dev->common.close = (int (*)(struct hw_device_t*))close_lights;
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dev->set_light = set_light;
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*device = (struct hw_device_t*)dev;
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return 0;
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}
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static struct hw_module_methods_t lights_module_methods = {
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.open = open_lights,
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};
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/*
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* The emulator lights Module
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*/
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const struct hw_module_t HAL_MODULE_INFO_SYM = {
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.tag = HARDWARE_MODULE_TAG,
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.version_major = 1,
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.version_minor = 0,
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.id = LIGHTS_HARDWARE_MODULE_ID,
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.name = "Goldfish lights Module",
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.author = "The Android Open Source Project",
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.methods = &lights_module_methods,
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};
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