fileplayer.cc

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/* MPEG/WAVE Sound library

   (C) 1997 by Jung woo-jae */

// Fileplayer.cc
// It's an example for how to use MPEG/WAVE Sound library

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>

#include "mpegsound.h"

// File player superclass
Fileplayer::Fileplayer()
{
    __errorcode = SOUND_ERROR_OK;
    player = NULL;
};

Fileplayer::~Fileplayer()
{
    delete player;
};

// Wave file player
Wavefileplayer::Wavefileplayer()
{
    loader = NULL;
    server = NULL;
}

Wavefileplayer::~Wavefileplayer()
{
    if (loader)
	delete loader;
    if (server)
	delete server;
}

bool
Wavefileplayer::openfile(char *filename, char *device)
{
// Player
    if (device == NULL)
	device = Rawplayer::defaultdevice;

    if (device[0] == '/')
	player = new Rawplayer;
    else {
	if (device[0] == '-')
	    device = NULL;
	player = new Rawtofile;
    }

    if (player == NULL)
	return seterrorcode(SOUND_ERROR_MEMORYNOTENOUGH);
    if (!player->initialize(device))
	return seterrorcode(player->geterrorcode());

// Loader
    {
	int err;

	if ((loader = Soundinputstream::hopen(filename, &err)) == NULL)
	    return seterrorcode(err);
    }

// Server
    if ((server = new Wavetoraw(loader, player)) == NULL)
	return seterrorcode(SOUND_ERROR_MEMORYNOTENOUGH);
    return server->initialize();
}

void
Wavefileplayer::setforcetomono(bool flag)
{
    server->setforcetomono(flag);
};

bool
Wavefileplayer::playing(int verbose)
{
    if (!server->run())
	return false;		// Read first time

    if (verbose > 0) {
	fprintf(stderr,
		"Verbose : %dbits, "
		"%dHz, "
		"%s\n",
		server->getsamplesize(),
		server->getfrequency(),
		server->isstereo()? "Stereo" : "Mono");
    }

    while (server->run());	// Playing

    seterrorcode(server->geterrorcode());
    if (geterrorcode() == SOUND_ERROR_FINISH)
	return true;
    return false;
}




// Mpegfileplayer
Mpegfileplayer::Mpegfileplayer()
{
    loader = NULL;
    server = NULL;
};

Mpegfileplayer::~Mpegfileplayer()
{
    if (loader)
	delete loader;
    if (server)
	delete server;
}

bool
Mpegfileplayer::openfile(char *filename, char *device)
{
// Player
    if (device == NULL)
	device = Rawplayer::defaultdevice;

    if (device[0] == '/')
	player = new Rawplayer;
    else {
	if (device[0] == '-')
	    device = NULL;
	player = new Rawtofile;
    }

    if (player == NULL)
	return seterrorcode(SOUND_ERROR_MEMORYNOTENOUGH);
    if (!player->initialize(device))
	return seterrorcode(player->geterrorcode());

// Loader
    {
	int err;
	if ((loader = Soundinputstream::hopen(filename, &err)) == NULL)
	    return seterrorcode(err);
    }

// Server
    if ((server = new Mpegtoraw(loader, player)) == NULL)
	return seterrorcode(SOUND_ERROR_MEMORYNOTENOUGH);

// Initialize server
    server->initialize(filename);
    return true;
}

void
Mpegfileplayer::setforcetomono(bool flag)
{
    server->setforcetomono(flag);
};

void
Mpegfileplayer::setdownfrequency(int value)
{
    server->setdownfrequency(value);
};

bool
Mpegfileplayer::playing(int verbose)
{
    if (!server->run(-1))
	return false;		// Initialize MPEG Layer 3
    if (verbose > 0)
	showverbose(verbose);
    while (server->run(100));	// Playing

    seterrorcode(server->geterrorcode());
    if (seterrorcode(SOUND_ERROR_FINISH))
	return true;
    return false;
}

#ifdef PTHREADEDMPEG
bool
Mpegfileplayer::playingwiththread(int verbose, int framenumbers)
{
    if (framenumbers < 20)
	return playing(verbose);

    server->makethreadedplayer(framenumbers);

    if (!server->run(-1))
	return false;		// Initialize MPEG Layer 3
    if (verbose > 0)
	showverbose(verbose);
    while (server->run(100));	// Playing
    server->freethreadedplayer();

    seterrorcode(server->geterrorcode());
    if (seterrorcode(SOUND_ERROR_FINISH))
	return true;
    return false;
}
#endif

void
Mpegfileplayer::showverbose(int verbose)
{
    static char *modestring[4] =
	{ "stereo", "joint stereo", "dual channel", "mono" };

    fprintf(stderr, "Verbose: MPEG-%d Layer %d, %s,\n\t%dHz%s, %dkbit/s, ",
	    server->getversion() + 1,
	    server->getlayer(), modestring[server->getmode()],
	    server->getfrequency(), server->getdownfrequency()? "//2" : "",
	    server->getbitrate());
    fprintf(stderr, server->getcrccheck()
	    ? "with crc check\n" : "without crc check\n");
    if (verbose > 1) {
	fprintf(stderr,
		"Songname : %s\n"
		"Artist   : %s\n"
		"Album    : %s\n"
		"Year     : %s\n"
		"Comment  : %s\n",
		server->getname(),
		server->getartist(),
		server->getalbum(), server->getyear(), server->getcomment());
    }
}