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Diffstat (limited to 'binding/radio_impl_null.c')
| -rw-r--r-- | binding/radio_impl_null.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/binding/radio_impl_null.c b/binding/radio_impl_null.c deleted file mode 100644 index b66c025..0000000 --- a/binding/radio_impl_null.c +++ /dev/null @@ -1,281 +0,0 @@ -/* - * Copyright (C) 2017,2018,2020 Konsulko Group - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * NOTE: Some locking around frequency and scanning state may be - * required if this null implementation ever needs to be used - * beyond basic functionality testing. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdint.h> -#include <stdbool.h> -#include <string.h> -#include <unistd.h> -#include <pthread.h> -#include <sys/stat.h> -#include <errno.h> -#include <glib.h> -#include <afb/afb-binding.h> - -#include "radio_impl.h" - -// Structure to describe FM band plans, all values in Hz. -typedef struct { - char *name; - uint32_t min; - uint32_t max; - uint32_t step; -} fm_band_plan_t; - -static fm_band_plan_t known_fm_band_plans[5] = { - { .name = "US", .min = 87900000, .max = 107900000, .step = 200000 }, - { .name = "JP", .min = 76000000, .max = 95000000, .step = 100000 }, - { .name = "EU", .min = 87500000, .max = 108000000, .step = 50000 }, - { .name = "ITU-1", .min = 87500000, .max = 108000000, .step = 50000 }, - { .name = "ITU-2", .min = 87900000, .max = 107900000, .step = 50000 } -}; - -static unsigned int bandplan; -static bool present; -static bool initialized; -static bool active; -static bool scanning; -static uint32_t current_frequency; -static radio_freq_callback_t freq_callback; -static void *freq_callback_data; - -static uint32_t null_get_min_frequency(radio_band_t band); -static void null_set_frequency(uint32_t frequency); - -static int null_probe(void) -{ - present = true; - return 0; -} - -static int null_init(void) -{ - GKeyFile *conf_file; - char *value_str; - char *rootdir; - char *helper_path; - - if(!present) - return -1; - - if(initialized) - return 0; - - // Load settings from configuration file if it exists - conf_file = g_key_file_new(); - if(conf_file && - g_key_file_load_from_dirs(conf_file, - "AGL.conf", - (const gchar**) g_get_system_config_dirs(), - NULL, - G_KEY_FILE_KEEP_COMMENTS, - NULL) == TRUE) { - - // Set band plan if it is specified - value_str = g_key_file_get_string(conf_file, - "radio", - "fmbandplan", - NULL); - if(value_str) { - unsigned int i; - for(i = 0; - i < sizeof(known_fm_band_plans) / sizeof(fm_band_plan_t); - i++) { - if(!strcasecmp(value_str, known_fm_band_plans[i].name)) { - bandplan = i; - break; - } - } - } - } - - // Start off with minimum bandplan frequency - current_frequency = null_get_min_frequency(BAND_FM); - - initialized = true; - null_set_frequency(current_frequency); - - return 0; -} - -static void null_set_output(const char *output) -{ -} - -static uint32_t null_get_frequency(void) -{ - return current_frequency; -} - -static void null_set_frequency(uint32_t frequency) -{ - if(frequency < known_fm_band_plans[bandplan].min || - frequency > known_fm_band_plans[bandplan].max) - return; - - current_frequency = frequency; - - if(freq_callback) - freq_callback(current_frequency, freq_callback_data); -} - -static void null_set_frequency_callback(radio_freq_callback_t callback, - void *data) -{ - freq_callback = callback; - freq_callback_data = data; -} - -static radio_band_t null_get_band(void) -{ - // We only support FM - return BAND_FM; -} - -static void null_set_band(radio_band_t band) -{ - // We only support FM, so do nothing -} - -static int null_band_supported(radio_band_t band) -{ - if(band == BAND_FM) - return 1; - return 0; -} - -static uint32_t null_get_min_frequency(radio_band_t band) -{ - return known_fm_band_plans[bandplan].min; -} - -static uint32_t null_get_max_frequency(radio_band_t band) -{ - return known_fm_band_plans[bandplan].max; -} - -static uint32_t null_get_frequency_step(radio_band_t band) -{ - uint32_t ret = 0; - - switch (band) { - case BAND_AM: - ret = 1000; // 1 kHz - break; - case BAND_FM: - ret = known_fm_band_plans[bandplan].step; - break; - default: - break; - } - return ret; -} - -static void null_start(void) -{ - if(!initialized) - return; - - if(active) - return; - - active = true; -} - -static void null_stop(void) -{ - if(!initialized) - return; - - if (!active) - return; - - active = false; -} - -static void null_scan_start(radio_scan_direction_t direction, - radio_scan_callback_t callback, - void *data) -{ - int frequency; - - if(!active || scanning) - return; - - scanning = true; - - // Just go to the next frequency step up or down - frequency = current_frequency; - if(direction == SCAN_FORWARD) { - frequency += known_fm_band_plans[bandplan].step; - } else { - frequency -= known_fm_band_plans[bandplan].step; - } - if(frequency < known_fm_band_plans[bandplan].min) - frequency = known_fm_band_plans[bandplan].max; - else if(frequency > known_fm_band_plans[bandplan].max) - frequency = known_fm_band_plans[bandplan].min; - - scanning = false; - null_set_frequency(frequency); - if(callback) - callback(frequency, data); -} - -static void null_scan_stop(void) -{ - scanning = false; -} - -static radio_stereo_mode_t null_get_stereo_mode(void) -{ - // We only support stereo - return STEREO; -} - -static void null_set_stereo_mode(radio_stereo_mode_t mode) -{ - // We only support stereo, so do nothing -} - -radio_impl_ops_t null_impl_ops = { - .name = "null/mock radio", - .probe = null_probe, - .init = null_init, - .set_output = null_set_output, - .get_frequency = null_get_frequency, - .set_frequency = null_set_frequency, - .set_frequency_callback = null_set_frequency_callback, - .get_band = null_get_band, - .set_band = null_set_band, - .band_supported = null_band_supported, - .get_min_frequency = null_get_min_frequency, - .get_max_frequency = null_get_max_frequency, - .get_frequency_step = null_get_frequency_step, - .start = null_start, - .stop = null_stop, - .scan_start = null_scan_start, - .scan_stop = null_scan_stop, - .get_stereo_mode = null_get_stereo_mode, - .set_stereo_mode = null_set_stereo_mode -}; 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