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/*
* mpc123 - Musepack Console audio player
* Copyright (C) 2005-2008 Fernando Vezzosi <fv at linuxvar.it>
*
* This program 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.
*
* This program 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <ao/ao.h>
#include "mpc123.h"
/*
* do the actual playing job
* things learned from libmpcdec/src/sample.cpp
*/
int do_play_stream(mpc_reader * the_reader, reader_data * data){
mpc_streaminfo tmp_stream_info;
mpc_decoder mpc123_decoder;
mpc_int32_t mpc_ret;
mpc_uint32_t vbrAcc=0, vbrUpd=0;
int played=0;
void * ao_data=NULL;
/* decode-phase stuff */
MPC_SAMPLE_FORMAT buffer[MPC_DECODER_BUFFER_LENGTH];
unsigned decoded_samples=0, total_decoded=0;
unsigned bytes_from_decoder=0;
/* read file's streaminfo data */
mpc_streaminfo_init(&tmp_stream_info);
if( (mpc_ret=mpc_streaminfo_read(&tmp_stream_info, the_reader))
!= ERROR_CODE_OK){
debugf("mpc_streaminfo_read()=%d", mpc_ret);
die("Not a valid musepack file\n");
}
/* initialize decoder with the appropriate file reader */
mpc_decoder_setup(&mpc123_decoder, the_reader);
if( !(mpc_ret=mpc_decoder_initialize(&mpc123_decoder, &tmp_stream_info)) ){
debugf("mpc_decoder_initialize()=%d", mpc_ret);
die("Error initializing decoder\n");
}
if( mpc123_ao_init(&ao_data, &tmp_stream_info) != 0 ){
dief("Could not initialize audio library: error %d\n", errno);
}
/* decoding loop */
while(1){
decoded_samples=mpc_decoder_decode(&mpc123_decoder, buffer,
&vbrAcc, &vbrUpd);
if( !decoded_samples ){ /* eof */
debugf("End of file after %d samples", total_decoded);
break;
}
if( decoded_samples == -1 ){ /* decoding error */
debug("Error decoding stream.");
say(0, "Error while decoding -- maybe corrupted data?\n");
break;
}
/* debug(" <%d %d %d>", vbrAcc, vbrUpd, vbrUpd * 44100 / 1152 / 100);*/
total_decoded += decoded_samples;
bytes_from_decoder = decoded_samples * sizeof(float) * 2;
played=mpc123_ao_play(ao_data, (void *)buffer, decoded_samples * 2);
/* we can't play */
if( !played )
break;
/* next cycle if no flag is set */
if( options.flags == 0 )
continue;
/* we don't want to play anymore .. */
if( mpc123_flag_isset(MPC123_FL_PLAYNEXT) ){
mpc123_flag_unset(MPC123_FL_PLAYNEXT);
break;
}
/* break out of loop and leave flag handling to the upper level */
if( mpc123_flag_isset(MPC123_FL_STOP) )
break;
}
sayf(1, "Total samples decoded: %u\n", total_decoded);
mpc123_ao_done(ao_data);
return 0;
}
/* vim:ft=c:tw=78:ts=2:et:cin:
*/
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