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src/modulator.h

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+/*
+ * mpxgen - FM multiplex encoder with Stereo and RDS
+ * Copyright (C) 2021 Anthony96922
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef RDS2
+#define NUM_STREAMS	4
+#else
+#define NUM_STREAMS	1
+#endif
+
+/* RDS signal context */
+typedef struct rds_t {
+	uint8_t *bit_buffer; /* BITS_PER_GROUP */
+	uint8_t bit_pos;
+	float *sample_buffer; /* SAMPLE_BUFFER_SIZE */
+	uint8_t prev_output;
+	uint8_t cur_output;
+	uint8_t cur_bit;
+	uint8_t sample_count;
+	uint16_t in_sample_index;
+	uint16_t out_sample_index;
+	uint8_t symbol_shift;
+	float *symbol_shift_buf;
+	uint8_t symbol_shift_buf_idx;
+} rds_t;
+
+extern void init_rds_objects();
+extern void exit_rds_objects();
+