1/* 2 * vivid-rds-gen.h - rds (radio data system) generator support functions. 3 * 4 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. 5 * 6 * This program is free software; you may redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 17 * SOFTWARE. 18 */ 19 20#ifndef _VIVID_RDS_GEN_H_ 21#define _VIVID_RDS_GEN_H_ 22 23/* 24 * It takes almost exactly 5 seconds to transmit 57 RDS groups. 25 * Each group has 4 blocks and each block has a payload of 16 bits + a 26 * block identification. The driver will generate the contents of these 27 * 57 groups only when necessary and it will just be played continuously. 28 */ 29#define VIVID_RDS_GEN_GROUPS 57 30#define VIVID_RDS_GEN_BLKS_PER_GRP 4 31#define VIVID_RDS_GEN_BLOCKS (VIVID_RDS_GEN_BLKS_PER_GRP * VIVID_RDS_GEN_GROUPS) 32 33struct vivid_rds_gen { 34 struct v4l2_rds_data data[VIVID_RDS_GEN_BLOCKS]; 35 bool use_rbds; 36 u16 picode; 37 u8 pty; 38 bool mono_stereo; 39 bool art_head; 40 bool compressed; 41 bool dyn_pty; 42 bool ta; 43 bool tp; 44 bool ms; 45 char psname[8 + 1]; 46 char radiotext[64 + 1]; 47}; 48 49void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq, 50 bool use_alternate); 51void vivid_rds_generate(struct vivid_rds_gen *rds); 52 53#endif 54