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/*
tplay player plugin
Copyright (C) 1999 Martin Vogt
This program 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.
For more information look at the file COPYRIGHT in this package
*/
#include "tplayPlugin.h"
#include "../tplay/tplayfunctions.h"
#include <iostream>
using namespace std;
TplayPlugin::TplayPlugin() {
info=new info_struct();
info->progname = NULL;
info->loop = FALSE;
info->in_seconds = FALSE;
info->speed = DEFAULT_SPEED;
info->bits = DEFAULT_BITS;
info->channels = DEFAULT_CHANNELS;
info->buffer_size = BUFFER_SIZE;
info->show_usage = FALSE;
info->swap = FALSE;
info->forceraw = FALSE;
info->force = FALSE;
info->device = NULL;
info->verbose = FALSE;
info->optind = 0;
info->buffer = NULL;
info->firstblock = NULL;
info->number_of_blocks = 0;
info->readblock = 0;
info->writeblock = 0;
info->readcount = 0;
info->writecount = 0;
info->alldone = FALSE;
info->overflow = FALSE;
info->underflow = FALSE;
info->audioset = FALSE;
info->headerskip = 0;
info->blocksize = 4096;
info->bytes_on_last_block = 0;
startStamp=new TimeStamp();
endStamp=new TimeStamp();
}
TplayPlugin::~TplayPlugin() {
delete startStamp;
delete endStamp;
delete info;
}
void TplayPlugin::decoder_loop() {
int bytesread, count, stereo;
char *p, *bufferp;
if (input == NULL) {
cout << "TplayPlugin::decoder_loop input is NULL"<<endl;
exit(0);
}
if (output == NULL) {
cout << "TplayPlugin::decoder_loop output is NULL"<<endl;
exit(0);
}
TimeStamp* stamp;
long pos;
info->buffer = (char*) malloc(info->buffer_size * sizeof(char));
while(runCheck()) {
switch(streamState) {
case _STREAM_STATE_FIRST_INIT : {
read_header();
if (info->channels == 1)
stereo = FALSE;
else
stereo = TRUE;
info->number_of_blocks = 0;
bufferp = info->buffer;
pluginInfo->setLength(getTotalLength());
output->writeInfo(pluginInfo);
lhasLength=true;
setStreamState(_STREAM_STATE_INIT);
break;
}
case _STREAM_STATE_INIT :
setStreamState(_STREAM_STATE_PLAY);
cout << "audioSetup call"<<endl;
output->audioOpen();
output->audioSetup(info->speed, stereo, 1, 0, info->bits);
break;
case _STREAM_STATE_PLAY :
bytesread = 0;
count = 0;
p = bufferp;
while ((bytesread < info->blocksize) && (count != -1) &&
((count = input->read(p,info->blocksize-bytesread))!=0)){
p += count;
bytesread += count;
}
if (info->swap) {
swap_block(bufferp, bytesread);
}
if (bytesread > 0) {
pos=input->getBytePosition();
stamp=input->getTimeStamp(pos-bytesread);
output->audioPlay(stamp,endStamp,(char *) bufferp, bytesread);
}
if (bytesread < info->blocksize) {
info->alldone = TRUE;
}
break;
case _STREAM_STATE_WAIT_FOR_END:
// exit while loop
lDecoderLoop=false;
break;
default:
cout << "unknown stream state:"<<streamState<<endl;
}
}
cout << "tplay exit"<<endl;
free(info->buffer);
info->buffer = NULL;
output->audioFlush();
}
int TplayPlugin::seek_impl(int second) {
int bytes_per_second;
int seconds;
int back;
bytes_per_second = info->speed * info->channels * (info->bits / 8);
seconds = bytes_per_second * second;
back=input->seek(seconds);
return back;
}
void TplayPlugin::config(const char* key,const char* value,void* user_data) {
DecoderPlugin::config(key,value,user_data);
}
void TplayPlugin::swap_block(char * buffer, int blocksize) {
register int i;
char c, *p;
p = buffer;
for (i = 0; i < (blocksize / 2); i++) {
c = *p;
*p = *(p + 1);
*++p = c;
p++;
}
}
void TplayPlugin::read_header() {
int bytesread, count;
char *p, *bufferp;
info->firstblock = (char*) malloc(info->blocksize * sizeof(char));
bufferp = info->firstblock;
if (!info->forceraw) {
bytesread = 0;
count = 0;
p = bufferp;
while ((bytesread < info->blocksize) && (count != -1) &&
((count=input->read(p,info->blocksize-bytesread)) != 0)){
p += count;
bytesread += count;
}
if (bytesread < SUN_HDRSIZE)
cout << "Sample size is too small"<<endl;
if (read_au(info,info->firstblock) && read_wav(info,info->firstblock)) {
if (info->verbose)
printf("Playing raw data: %ld samples/s, %d bits, %d channels.\n",
info->speed, info->bits, info->channels);
}
if (info->swap)
swap_block(bufferp, bytesread);
if (bytesread < info->blocksize) {
info->alldone = TRUE;
info->bytes_on_last_block = bytesread;
return;
}
if (info->headerskip) {
count = 0;
bytesread = info->blocksize - info->headerskip;
p = info->firstblock + (info->blocksize - info->headerskip);
while ((bytesread < info->blocksize) && (count != -1) &&
((count = input->read(p,info->blocksize - bytesread)) != 0)) {
p += count;
bytesread += count;
}
}
info->writeblock++;
info->writecount++;
}
else {
if (info->verbose)
printf("Playing raw data: %ld samples/s, %d bits, %d channels\n",
info->speed, info->bits, info->channels);
}
}
/**
Nobody is perfect I'm too tired to fix this race
*/
int TplayPlugin::getTotalLength() {
float wavfilesize = input->getByteLength();
int back=0;
float frequence=info->speed;
int bits=info->bits;
if (bits == 16) {
wavfilesize=wavfilesize/2;
}
if (info->channels==2) {
wavfilesize=wavfilesize/2;
}
if (frequence != 0) {
back=(int)(wavfilesize/frequence);
}
return back;
}
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