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/*
* Copyright (C) 2000-2001 the xine project
*
* This file is part of xine, a unix video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: xine_decoder.c,v 1.1 2001/09/06 15:23:14 joachim_koenig Exp $
*
* 04-09-2001 DTS passtrough (C) Joachim Koenig
*
*/
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h> /* ntohs */
#include "audio_out.h"
#include "buffer.h"
#include "xine_internal.h"
typedef struct dts_decoder_s {
audio_decoder_t audio_decoder;
uint32_t pts;
uint32_t rate;
uint32_t bits_per_sample;
uint32_t number_of_channels;
uint32_t audio_caps;
ao_instance_t *audio_out;
int output_open;
} dts_decoder_t;
int dts_can_handle (audio_decoder_t *this_gen, int buf_type) {
buf_type &= 0xFFFF0000;
return ( buf_type == BUF_AUDIO_DTS);
}
void dts_init (audio_decoder_t *this_gen, ao_instance_t *audio_out) {
dts_decoder_t *this = (dts_decoder_t *) this_gen;
this->audio_out = audio_out;
this->output_open = 0;
this->pts = 0;
this->rate = 48000;
this->bits_per_sample=16;
this->number_of_channels=2;
this->audio_caps = audio_out->get_capabilities(audio_out);
}
void dts_decode_data (audio_decoder_t *this_gen, buf_element_t *buf) {
dts_decoder_t *this = (dts_decoder_t *) this_gen;
int16_t *sample_buffer=(int16_t *)buf->content;
if ((this->audio_caps & AO_CAP_MODE_AC5) == 0) {
return;
}
this->pts = buf->PTS;
if (!this->output_open) {
this->output_open = (this->audio_out->open (this->audio_out, this->bits_per_sample,
this->rate,
AO_CAP_MODE_AC5));
}
if (!this->output_open) {
return;
}
this->audio_out->write (this->audio_out,
sample_buffer,
1536,
this->pts);
}
void dts_close (audio_decoder_t *this_gen) {
dts_decoder_t *this = (dts_decoder_t *) this_gen;
printf("libdts: close \n");
if (this->output_open)
this->audio_out->close (this->audio_out);
this->output_open = 0;
}
static char *dts_get_id(void) {
return "dts";
}
audio_decoder_t *init_audio_decoder_plugin (int iface_version, config_values_t *cfg) {
dts_decoder_t *this ;
if (iface_version != 2) {
printf( "libdts: plugin doesn't support plugin API version %d.\n"
"libdts: this means there's a version mismatch between xine and this "
"libdts: decoder plugin.\nInstalling current plugins should help.\n",
iface_version);
return NULL;
}
this = (dts_decoder_t *) malloc (sizeof (dts_decoder_t));
this->audio_decoder.interface_version = 2;
this->audio_decoder.can_handle = dts_can_handle;
this->audio_decoder.init = dts_init;
this->audio_decoder.decode_data = dts_decode_data;
this->audio_decoder.close = dts_close;
this->audio_decoder.get_identifier = dts_get_id;
this->audio_decoder.priority = 1;
return (audio_decoder_t *) this;
}
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