#include <sys/param.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>

#include "saa713x_ioctl.h"

static struct saa_audio_opt audio_opt = { /* PAL A2 FM Defaults */
	.sao_flag_idarea = 0,
	.sao_idmod = 0,

	.sao_ch1mode = CH1MODE_FM,
	.sao_ch2mode = CH2MODE_FM,
	.sao_fltbw = FLTBW_C1MIN_C2MIN,

	.sao_siffreq1 = 0x729555,
	.sao_siffreq2 = 0x77A101,

	.sao_flag_hpen = 0,
	.sao_sifp = 0,
	.sao_sifa = SIFA_N10DB,

	.sao_sifgain = 0,
	.sao_flag_sifagc_off = 0,
	.sao_flag_sifagc_slow = 0,

	.sao_flag_fmdsch1 = 0,
	.sao_fmdsch1 = 0,
	.sao_flag_fmdsch2 = 0,
	.sao_fmdsch2 = 0,

	.sao_flag_idswfm = 1,		/* Auto DMSel ON */
	.sao_fmdmsel = 0,

	.sao_dac_sdos = SDOS_FMAM_FMAM,
	.sao_dac_avl = AVL_OFF,
	.sao_dac_ogain = SDGS_0DB,

	.sao_flag_aasdma = 1,
	.sao_dsp_csm = CSM_LEFT_RIGHT,

	.sao_flag_ch1_2vrms = 0,
	.sao_flag_ch2_2vrms = 0
};


static struct saa_audio_spec audio_spec = {
	.sas_audsel = AUDSEL_SIF,
	.sas_sfs = SFS_SIF_32KHZ,
	.sas_icsch = 1,

	.sas_cap_sampcount = 16384,
	.sas_audfmt = AUDFMT_16BIT,
	.sas_audsamp = AUDSAMP_STEREO,
	.sas_flag_samp2complement = 1,
	.sas_flags =  0,
	.sas_aclkfreq = ACLKFREQ_32p11MHZ,
};


int
main(int argc, char **argv)
{
	int fd, dummy;
	uint8_t *abuf;

	if (argc != 2)
		errx(ENOTSUP, "Usage: %s <device>", argv[0]);
	
	if ( (fd = open(argv[1], O_RDWR)) == -1)
		err(errno, "Error opening audio device %s", argv[1]);

	if (ioctl(fd, SETAUDIOOPT, &audio_opt) == -1)
		err(errno, "Ioctl, SETAUDIOOPT failed");

	if ( (abuf = mmap(0, 1048576, PROT_READ, 0,
				fd, SAA_MMAP_ACAP_OFFSET)) == MAP_FAILED)
		err(errno, "Error mmap'ing frame");

	if (ioctl(fd, ACAPTUREON, &audio_spec) == -1)
		err(errno, "Ioctl, ACAPTUREON failed");

	sleep(1);

	if (ioctl(fd, ACAPTUREOFF, &dummy) == -1)
		err(errno, "Ioctl, ACAPTUREOFF failed");

	return 0;
}