/* -*- c-basic-offset: 8; -*- */
/* speex.c: Ogg Speex data handlers for libshout
 *
 *  Copyright (C) 2005 the Icecast team <team@icecast.org>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <speex/speex.h>
#include <speex/speex_header.h>

#include "shout_private.h"
#include "shout_ogg.h"

/* -- local data structures -- */
typedef struct {
	SpeexHeader *sh;
} speex_data_t;

/* -- local prototypes -- */
static int read_speex_page(ogg_codec_t *codec, ogg_page *page);
static void free_speex_data(void *codec_data);

/* -- speex functions -- */
int _shout_open_speex(ogg_codec_t *codec, ogg_page *page)
{
	speex_data_t *speex_data = calloc(1, sizeof(speex_data_t));
	ogg_packet packet;

	if (!speex_data)
		return SHOUTERR_MALLOC;

	ogg_stream_packetout(&codec->os, &packet);

	if (!(speex_data->sh = speex_packet_to_header(packet.packet,packet.bytes))) {
		free_speex_data(speex_data);
		
		return SHOUTERR_UNSUPPORTED;
	}

	codec->codec_data = speex_data;
	codec->read_page = read_speex_page;
	codec->free_data = free_speex_data;

	return SHOUTERR_SUCCESS;
}

static int read_speex_page(ogg_codec_t *codec, ogg_page *page)
{
	ogg_packet packet;
	speex_data_t *speex_data = codec->codec_data;
	uint64_t samples = 0;
	
	while (ogg_stream_packetout (&codec->os, &packet) > 0)
		samples += speex_data->sh->frames_per_packet * speex_data->sh->frame_size;

	codec->senttime += ((samples * 1000000) / speex_data->sh->rate);

	return SHOUTERR_SUCCESS;
}

static void free_speex_data(void *codec_data)
{
	speex_data_t *speex_data = (speex_data_t *)codec_data;

	if (speex_data->sh)
		free(speex_data->sh);

	free(speex_data);
}