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/*
* vivid-rds-gen.h - rds (radio data system) generator support functions.
*
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _VIVID_RDS_GEN_H_
#define _VIVID_RDS_GEN_H_
/*
* It takes almost exactly 5 seconds to transmit 57 RDS groups.
* Each group has 4 blocks and each block has a payload of 16 bits + a
* block identification. The driver will generate the contents of these
* 57 groups only when necessary and it will just be played continuously.
*/
#define VIVID_RDS_GEN_GROUPS 57
#define VIVID_RDS_GEN_BLKS_PER_GRP 4
#define VIVID_RDS_GEN_BLOCKS (VIVID_RDS_GEN_BLKS_PER_GRP * VIVID_RDS_GEN_GROUPS)
#define VIVID_RDS_NSEC_PER_BLK (u32)(5ull * NSEC_PER_SEC / VIVID_RDS_GEN_BLOCKS)
struct vivid_rds_gen {
struct v4l2_rds_data data[VIVID_RDS_GEN_BLOCKS];
bool use_rbds;
u16 picode;
u8 pty;
bool mono_stereo;
bool art_head;
bool compressed;
bool dyn_pty;
bool ta;
bool tp;
bool ms;
char psname[8 + 1];
char radiotext[64 + 1];
};
void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq,
bool use_alternate);
void vivid_rds_generate(struct vivid_rds_gen *rds);
#endif
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