134 lines
3.7 KiB
C
134 lines
3.7 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file 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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#define LOG_TAG "ConsumerIrHal"
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <cutils/log.h>
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#include <hardware/hardware.h>
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#include <hardware/consumerir.h>
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
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static const consumerir_freq_range_t consumerir_freqs[] = {
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{.min = 30000, .max = 30000},
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{.min = 33000, .max = 33000},
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{.min = 36000, .max = 36000},
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{.min = 38000, .max = 38000},
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{.min = 40000, .max = 40000},
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{.min = 56000, .max = 56000},
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};
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int fd = 0;
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static int consumerir_transmit(struct consumerir_device *dev,
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int carrier_freq, int pattern[], int pattern_len)
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{
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int strlen;
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int i;
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char buffer[2048];
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memset(buffer, 0, 2048);
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/* write the header */
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strlen = sprintf(buffer, "%d,", carrier_freq);
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/* calculate factor of conversion from microseconds to pulses */
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float factor = 1000000 / carrier_freq;
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/* write out the timing pattern */
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for (i = 0; i < pattern_len; i++)
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{
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strlen += sprintf(buffer + strlen, "%d,", (int) (pattern[i]/factor));
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}
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buffer[strlen - 1] = 0;
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write(fd, buffer, strlen - 1);
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return 0;
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}
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static int consumerir_get_num_carrier_freqs(struct consumerir_device *dev)
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{
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return ARRAY_SIZE(consumerir_freqs);
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}
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static int consumerir_get_carrier_freqs(struct consumerir_device *dev,
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size_t len, consumerir_freq_range_t *ranges)
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{
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size_t to_copy = ARRAY_SIZE(consumerir_freqs);
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to_copy = len < to_copy ? len : to_copy;
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memcpy(ranges, consumerir_freqs, to_copy * sizeof(consumerir_freq_range_t));
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return to_copy;
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}
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static int consumerir_close(hw_device_t *dev)
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{
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free(dev);
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close(fd);
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return 0;
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}
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/*
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* Generic device handling
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*/
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static int consumerir_open(const hw_module_t* module, const char* name,
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hw_device_t** device)
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{
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if (strcmp(name, CONSUMERIR_TRANSMITTER) != 0) {
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return -EINVAL;
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}
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if (device == NULL) {
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ALOGE("NULL device on open");
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return -EINVAL;
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}
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consumerir_device_t *dev = malloc(sizeof(consumerir_device_t));
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memset(dev, 0, sizeof(consumerir_device_t));
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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 = consumerir_close;
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dev->transmit = consumerir_transmit;
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dev->get_num_carrier_freqs = consumerir_get_num_carrier_freqs;
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dev->get_carrier_freqs = consumerir_get_carrier_freqs;
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*device = (hw_device_t*) dev;
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fd = open("/sys/class/sec/sec_ir/ir_send", O_RDWR);
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return 0;
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}
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static struct hw_module_methods_t consumerir_module_methods = {
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.open = consumerir_open,
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};
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consumerir_module_t HAL_MODULE_INFO_SYM = {
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.common = {
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.tag = HARDWARE_MODULE_TAG,
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.module_api_version = CONSUMERIR_MODULE_API_VERSION_1_0,
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.hal_api_version = HARDWARE_HAL_API_VERSION,
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.id = CONSUMERIR_HARDWARE_MODULE_ID,
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.name = "Consumer IR Module",
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.author = "The CyanogenMod Project",
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.methods = &consumerir_module_methods,
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},
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};
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