/*
 * Copyright (c) 2022 Omar Polo <op@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/queue.h>
#include <sys/uio.h>

#include <err.h>
#include <event.h>
#include <fcntl.h>
#include <math.h>
#include <inttypes.h>
#include <limits.h>
#include <sndio.h>
#include <stdio.h>
#include <stdint.h>
#include <imsg.h>
#include <unistd.h>

#include <vorbis/codec.h>
#include <vorbis/vorbisfile.h>

#include "amused.h"

#ifndef nitems
#define nitems(x) (sizeof(x)/sizeof(x[0]))
#endif

void
play_oggvorbis(int fd)
{
	static uint8_t pcmout[4096];
	FILE *f;
	OggVorbis_File vf;
	int current_section, eof = 0;

	if ((f = fdopen(fd, "r")) == NULL)
		err(1, "fdopen");

	if (ov_open_callbacks(f, &vf, NULL, 0, OV_CALLBACKS_NOCLOSE) < 0)
		errx(1, "input is not an Ogg bitstream");

	{
		char **ptr;
		vorbis_info *vi;

		vi = ov_info(&vf, -1);
		for (ptr = ov_comment(&vf, -1)->user_comments; *ptr; ++ptr)
			printf("%s\n", *ptr);

		printf("bitstream is %d channel, %ldHz\n", vi->channels, vi->rate);

		if (player_setup(vi->rate, vi->channels) == -1)
			err(1, "player_setrate");
	}

	while (!eof) {
		long ret;

		if (player_shouldstop())
			break;

		ret = ov_read(&vf, pcmout, sizeof(pcmout), 0, 2, 1,
		    &current_section);
		if (ret == 0)
			eof = 1;
		else if (ret < 0)
			warnx("non-fatal error in the stream %ld", ret);
		else {
			/* TODO: deal with sample rate changes */
			sio_write(hdl, pcmout, ret);
		}
	}

	ov_clear(&vf);
}