summaryrefslogtreecommitdiffstats
path: root/binding/radio_impl_rtlsdr.c
diff options
context:
space:
mode:
authorMatt Ranostay <matt.ranostay@konsulko.com>2017-08-17 15:21:48 -0700
committerMatt Ranostay <matt.ranostay@konsulko.com>2017-08-17 20:51:04 -0700
commitc46a56ac144e7399f2172e56a7a22d46d580c830 (patch)
tree4122472de77d49eb47497e9641b445cea528e29c /binding/radio_impl_rtlsdr.c
parent9aebdfa77d57426fdaaab123d7c91c32a20e87be (diff)
Spliting out of the radio binding into it's own repo and service. This removes the binding from the radio application build. Change-Id: If62c61e4ad0054b55eee5f0bb46a33bc0677f4b8 Bug-AGL: SPEC-834 Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Diffstat (limited to 'binding/radio_impl_rtlsdr.c')
-rw-r--r--binding/radio_impl_rtlsdr.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/binding/radio_impl_rtlsdr.c b/binding/radio_impl_rtlsdr.c
deleted file mode 100644
index 4364fd5..0000000
--- a/binding/radio_impl_rtlsdr.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * Copyright (C) 2017 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.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <string.h>
-#include <glib.h>
-
-#include "radio_impl.h"
-#include "radio_output.h"
-#include "rtl_fm.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 = 76100000, .max = 89900000, .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 active;
-static uint32_t current_frequency;
-
-static void rtl_output_callback(int16_t *result, int result_len, void *ctx)
-{
- if(active)
- radio_output_write((char*) result, result_len * 2);
-}
-
-int radio_impl_init(void)
-{
- GKeyFile* conf_file;
- int conf_file_present = 0;
- char *value_str;
-
- if(present)
- return -1;
-
- // 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) {
- conf_file_present = 1;
-
- // 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;
- }
- }
- }
- }
- fprintf(stderr, "Using FM Bandplan: %s\n", known_fm_band_plans[bandplan].name);
-
- current_frequency = radio_impl_get_min_frequency(BAND_FM);
- if(rtl_fm_init(current_frequency, 200000, 48000, rtl_output_callback, NULL) < 0) {
- return -1;
- }
-
- if(conf_file_present) {
- GError *error = NULL;
- int n;
-
- // Allow over-riding scanning parameters just in case a demo
- // setup needs to do so to work reliably.
- n = g_key_file_get_integer(conf_file,
- "radio",
- "scan_squelch_level",
- &error);
- //error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND &&
- //error->code != G_KEY_FILE_ERROR_INVALID_VALUE) {
- if(!error) {
- fprintf(stderr, "Scanning squelch level set to %d\n", n);
- rtl_fm_scan_set_squelch_level(n);
- }
-
- error = NULL;
- n = g_key_file_get_integer(conf_file,
- "radio",
- "scan_squelch_limit",
- &error);
- if(!error) {
- fprintf(stderr, "Scanning squelch limit set to %d\n", n);
- rtl_fm_scan_set_squelch_limit(n);
- }
-
- g_key_file_free(conf_file);
- }
-
- present = true;
- return 0;
-}
-
-uint32_t radio_impl_get_frequency(void)
-{
- return current_frequency;
-}
-
-void radio_impl_set_frequency(uint32_t frequency)
-{
- if(!present)
- return;
-
- if(frequency < known_fm_band_plans[bandplan].min ||
- frequency > known_fm_band_plans[bandplan].max)
- return;
-
- radio_impl_scan_stop();
- current_frequency = frequency;
- rtl_fm_set_freq(frequency);
-}
-
-void radio_impl_set_frequency_callback(radio_freq_callback_t callback,
- void *data)
-{
- rtl_fm_set_freq_callback(callback, data);
-}
-
-radio_band_t radio_impl_get_band(void)
-{
- return BAND_FM;
-}
-
-void radio_impl_set_band(radio_band_t band)
-{
- // We only support FM, so do nothing
-}
-
-int radio_impl_band_supported(radio_band_t band)
-{
- if(band == BAND_FM)
- return 1;
- return 0;
-}
-
-uint32_t radio_impl_get_min_frequency(radio_band_t band)
-{
- return known_fm_band_plans[bandplan].min;
-}
-
-uint32_t radio_impl_get_max_frequency(radio_band_t band)
-{
- return known_fm_band_plans[bandplan].max;
-}
-
-uint32_t radio_impl_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;
-}
-
-void radio_impl_start(void)
-{
- if(!present)
- return;
-
- if(!active) {
- if(radio_output_start() != 0)
- return;
-
- rtl_fm_start();
- active = true;
- }
-}
-
-void radio_impl_stop(void)
-{
- if(!present)
- return;
-
- if(active) {
- active = false;
- radio_output_stop();
- rtl_fm_stop();
-
- }
-}
-
-void radio_impl_scan_start(radio_scan_direction_t direction,
- radio_scan_callback_t callback,
- void *data)
-{
- rtl_fm_scan_start(direction == SCAN_FORWARD ? 0 : 1,
- callback,
- data,
- radio_impl_get_frequency_step(BAND_FM),
- radio_impl_get_min_frequency(BAND_FM),
- radio_impl_get_max_frequency(BAND_FM));
-}
-
-void radio_impl_scan_stop(void)
-{
- rtl_fm_scan_stop();
-}
-
-radio_stereo_mode_t radio_impl_get_stereo_mode(void)
-{
- return STEREO;
-}
-
-void radio_impl_set_stereo_mode(radio_stereo_mode_t mode)
-{
- // We only support stereo, so do nothing
-}