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twoneis 2025-03-19 13:44:23 +01:00
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42
linux-6.8.1/drivers/media/test-drivers/vivid/vivid-rds-gen.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* vivid-rds-gen.h - rds (radio data system) generator support functions.
*
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*/
#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