//----------------------------------------------------------------------------
//
// File:        say.cpp
// Date:        25-Apr-2003
// Programmer:  Marc Rousseau
//
// Description: Simple test program for the TMS5220 Speech Synthesizer code
//
// Copyright (c) 2003-2004 Marc Rousseau, All Rights Reserved.
//
// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
//
// Revision History:
//
//----------------------------------------------------------------------------

#if defined( OS_WINDOWS )
	#include <windows.h>
#endif

#include <cstring>
#include "common.hpp"
#include "logger.hpp"
#include "SDL.h"
#include "tms5220.hpp"
#include "tms9919.hpp"
#include "tms9919-sdl.hpp"
#include "option.hpp"

DBG_REGISTER( __FILE__ );

struct sNode
{
	char string[ 64 ];
	UINT32 prevAddr;
	UINT32 nextAddr;
	UINT32 dataAddr;
	int dataLength;
};

bool ReadNode( cTMS5220 *speech, UINT32 address, sNode *node )
{
	FUNCTION_ENTRY( nullptr, "ReadNode", true );

	memset( node, 0, sizeof( sNode ));

	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  0 ) & 0x000F )));   // Load Address
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  4 ) & 0x000F )));   // Load Address
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  8 ) & 0x000F )));   // Load Address
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >> 12 ) & 0x000F )));   // Load Address
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >> 16 ) & 0x000F )));   // Load Address

	speech->WriteData( 0x10 );   // Read byte
	int length = speech->ReadData( 0 );
	for( int i = 0; i < length; i++ )
	{
		speech->WriteData( 0x10 );
		node->string[ i ] = speech->ReadData( 0 );
	}
	node->string[ length ] = '\0';

	speech->WriteData( 0x10 );
	node->prevAddr = speech->ReadData( 0 ) << 8;
	speech->WriteData( 0x10 );
	node->prevAddr |= speech->ReadData( 0 );

	speech->WriteData( 0x10 );
	node->nextAddr = speech->ReadData( 0 ) << 8;
	speech->WriteData( 0x10 );
	node->nextAddr |= speech->ReadData( 0 );

	speech->WriteData( 0x10 );
	speech->ReadData( 0 );

	speech->WriteData( 0x10 );
	node->dataAddr = speech->ReadData( 0 ) << 8;
	speech->WriteData( 0x10 );
	node->dataAddr |= speech->ReadData( 0 );

	speech->WriteData( 0x10 );
	node->dataLength = speech->ReadData( 0 );

	return true;
}

UINT32 LocateString( cTMS5220 *speech, const char *string, size_t length )
{
	// Reset the LoadPointer
	speech->WriteData( 0x40 );   // Load Address
	speech->WriteData( 0x40 );   // Load Address
	speech->WriteData( 0x40 );   // Load Address
	speech->WriteData( 0x40 );   // Load Address
	speech->WriteData( 0x40 );   // Load Address

	speech->WriteData( 0x10 );   // Read byte
	if( speech->ReadData( 0 ) != 0xAA )
	{
		fprintf( stderr, "Speech rom is invalid!\n" );
		return 0;
	}

	sNode node;
	UINT32 addr = 1;

	for( EVER )
	{
		ReadNode( speech, addr, &node );
		int delta = strnicmp( string, node.string, length );
		if(( strlen( node.string ) == length ) && ( delta == 0 ))
		{
			break;
		}
		addr = ( delta <= 0 ) ? node.prevAddr : node.nextAddr;
		if( addr == 0 )
		{
			return 0;
		}
	}

	return node.dataAddr;
}

void SayPhrase( cTMS5220 *speech, const char *text, size_t length )
{
	FUNCTION_ENTRY( nullptr, "SayPhrase", true );

	UINT32 address = LocateString( speech, text, length );
	if( verbose >= 2 )
	{
		fprintf( stdout, "Phrase: %*.*s Address: %04X\n", ( int ) length, ( int ) length, text, address );
	}

	// If we can't find the phrase in the dictionary, spell it out
	if( address == 0 )
	{
		if( verbose >= 1 )
		{
			fprintf( stdout, "Unable to find phrase '%*.*s'\n", ( int ) length, ( int ) length, text );
		}
		if( length == 1 )
		{
			// Do the 'Uhoh' thing, but make sure we don't get stuck in a recursive loop
			if( LocateString( speech, "UHOH", 4 ) != 0 )
			{
				SayPhrase( speech, "UHOH", 4 );
			}
		}
		else
		{
			for( size_t i = 0; i < length; i++ )
			{
				SayPhrase( speech, text + i, 1 );
			}
		}
		return;
	}

	// Load the address of the speech data
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  0 ) & 0x000F )));
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  4 ) & 0x000F )));
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >>  8 ) & 0x000F )));
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >> 12 ) & 0x000F )));
	speech->WriteData(( UINT8 ) ( 0x40 | (( address >> 16 ) & 0x000F )));

	// Speek
	speech->WriteData( 0x50 );

	// Wait for the phrase to complete
	UINT8 status = 0;
	do
	{
		SDL_Delay( 200 );
		status = speech->ReadData( 0 );
	}
	while( status == 0xE0 );
}

void Say( cTMS5220 *speech, const char *text )
{
	FUNCTION_ENTRY( nullptr, "Say", true );

	SayPhrase( speech, text, strlen( text ));
}

bool ParseSampleRate( const char *arg, void *ptr )
{
	FUNCTION_ENTRY( nullptr, "ParseSampleRate", true );

	int freq = 0;

	arg = strchr( arg, '=' ) + 1;

	if( sscanf( arg, "%d", &freq ) != 1 )
	{
		fprintf( stderr, "Invalid sampling rate '%s'\n", arg );
		return false;
	}

	if(( freq > 44100 ) || ( freq < 8000 ))
	{
		fprintf( stderr, "Sampling rate must be between 8000 and 44100\n" );
		return false;
	}

	*( int * ) ptr = freq;

	return true;
}

void PrintUsage( )
{
	FUNCTION_ENTRY( nullptr, "PrintUsage", true );

	fprintf( stdout, "Usage: say [options] <Text-to-speak>\n" );
	fprintf( stdout, "\n" );
}

int main( int argc, char *argv[] )
{
	FUNCTION_ENTRY( nullptr, "main", true );

	int samplingRate   = 44100;
	int volume         = 50;

	sOption optList[ ] =
	{
		{ 's', "sample=*<freq>",     OPT_NONE,                      0,     &samplingRate,   ParseSampleRate, "Select sampling frequency for audio playback" },
		{ 'v', "verbose*=n",         OPT_VALUE_PARSE_INT,           1,     &verbose,        nullptr,         "Display extra information" },
		{  0,  "volume=*n",          OPT_VALUE_PARSE_INT,           50,    &volume,         nullptr,         "Set the audio volume" }
	};

	if( argc == 1 )
	{
		PrintHelp( SIZE( optList ), optList );
		return 0;
	}

	int index = ParseArgs( 1, argc, argv, SIZE( optList ), optList );

	if( SDL_Init( SDL_INIT_NOPARACHUTE ) < 0 )
	{
		fprintf( stderr, "Couldn't initialize SDL: %s\n", SDL_GetError( ));
		return -1;
	}

	// Clean up on exit, exit on window close and interrupt
	atexit( SDL_Quit );

	cRefPtr<cSdlTMS9919> sound = new cSdlTMS9919( samplingRate );
	sound->SetMasterVolume( volume );

	cRefPtr<cTMS5220> speech = new cTMS5220;

	speech->SetSoundChip( sound );
	sound->SetSpeechSynthesizer( speech );

	speech->WriteData( 0x70 );   // Reset

	for( int i = index; i < argc; i++ )
	{
		Say( speech, argv[ i ] );
	}

	return 0;
}
