fipuser_nextbase.c

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

/*
 * Specific declarations for NEXTBASE player
 *
 * Copyright(c) 2002 Sigma Designs, Inc.
 * Author: Markus Brenner
 * September 2002
 */

#include "fipuser.h"
#include "fipuser_common.h"

//this array is used to display individual symbols
//the format is [byte position][bit to turn on] - both zero based
const char fipsymbols[NUM_SYMBOLS][2] = { 
	{1, 6}, {0, 6}, {0, 5}, {0, 4}, {1, 7}, 
	{0, 7}, {1, 0}, {1, 1}, {1, 2}, {1, 3},
	{1, 4}, {1, 5}, {2, 7}, {0, 3}, {3, 1},
	{3, 0},	{3, 3}, {3, 2}, {3, 5}, {3, 4},
	{3, 7}, {5, 7}, {7, 7}, {7, 6}, {9, 7},
	{11, 7},{9, 6}, {11, 6},{3, 6}, {5, 6}
};

//character mapping
#define LCD_SEG_7
#include "fipcharacter.h"


//return 1 if succesfull, otherwise 0
int fip_display_character(const int position, const char character)
{
	int i, byte1;
	unsigned char current_contents0, current_contents1;
	
	if(position < 1 || position > NUM_DIGITS) {
		DPRINTF("WARNING: digit #%d not available/supported on this player\n", position);
		return 0;
	}

	for(i = 0; i < NUM_CHARACTERS; i++)
		if(character == fipcharactersmap[i]) {
			byte1 = (position % 2) ? position + 1 : position + 3;

//			DPRINTF(__FUNCTION__": position=%d byte1=%d\n", position, byte1);

			FIP_ASSERT(byte1 < MAX_FIP_RAM);

			current_contents0 = fipram[byte1];			 

			//clear	
			fipram[byte1] &= (position % 2) ? 0x80: 0xC0;
			if(position % 2 == 0) 
			{
				current_contents1 = fipram[byte1 - 1];
				fipram[byte1 - 1] &= 0x7F;
			}
			
			//set new bits
			fipram[byte1] |= (position % 2) ? fipcharacters[i] >> 1 : fipcharacters[i] >> 2;
			if(position % 2 == 0) fipram[byte1 - 1] |= (fipcharacters[i] << 6) & 0x80;

			//display only if changed
			if (current_contents0 != fipram[byte1])			
				FIP_USER_DISPLAY(byte1, fipram[byte1]);

			if(position % 2 == 0) 
			{
				if (current_contents1 != fipram[byte1 - 1])
					FIP_USER_DISPLAY(byte1 - 1, fipram[byte1 - 1]);
			}
			
			return 1;
		}

	DPRINTF("WARNING: character '%c' not available/supported on this player\n", character);
	return 0;
}


//show centered text (not every player has enough digits - so we have to finetune here)
void fip_display_text(const int text) {
	switch(text) {
		case FIP_TEXT_FLASHING:	fip_write_text(0, "FLASHING", FIP_LEFT); break;
		case FIP_TEXT_LOADING:	fip_write_text(0, "LOADING", FIP_LEFT); break;
		case FIP_TEXT_DONE:		fip_write_text(0, "DONE", FIP_LEFT); break;
		case FIP_TEXT_ERROR:	fip_write_text(0, "Error", FIP_LEFT); break;
		case FIP_TEXT_NO_DISC:	fip_write_text(0, "NO DISC", FIP_LEFT); break;
		case FIP_TEXT_ISO_DISC:	fip_write_text(0, "ISO DISC", FIP_LEFT); break;
		case FIP_TEXT_PAL:		fip_write_text(0, "PAL", FIP_LEFT); break;
		case FIP_TEXT_NTSC:		fip_write_text(0, "NtSC", FIP_LEFT); break;
		case FIP_TEXT_DIGITAL:	fip_write_text(0, "DIGItAL", FIP_LEFT); break;
		case FIP_TEXT_JPEG:		fip_write_text(0, "JPEG", FIP_LEFT); break;
		default:				DPRINTF("WARNING: text #%d not available/supported on this player\n", text);
	}
}


void fip_animate_twirl(const int on) {
	//turn previous off
    fip_display_symbol(TWIRL_1_FIP_ON + twirlstate, 0);

	if(on) {
		twirlstate++;
		if(twirlstate >= 6) twirlstate = 0;
		fip_display_symbol(TWIRL_1_FIP_ON + twirlstate, 1);
	}
}


void fip_displayinfo(const int hour, const int minute, const int second, const int title, const int chapter) {
	if(hour < L_OFF || minute < L_OFF || second < L_OFF || title < L_OFF || chapter < L_OFF ||
	   hour > 9 || minute > 59 || second > 59 || title > 99 || chapter > 99) {
		DPRINTF("ERROR: parameters passed to fip_displayinfo() not in valid range\n");
		return;
	}

	//hour
	fip_display_character(1, (hour==L_OFF) ? ' ' : hour%10 + '0');

	//minute
	fip_display_character(2, (minute==L_OFF) ? ' ' : minute/10 + '0');
	fip_display_character(3, (minute==L_OFF) ? ' ' : minute%10 + '0');

	//second
	fip_display_character(4, (second==L_OFF) ? ' ' : second/10 + '0');
	fip_display_character(5, (second==L_OFF) ? ' ' : second%10 + '0');

	//show colons if needed
	fip_display_symbol(COLON_HOUR_MIN_FIP_ON, (hour==L_OFF) ? 0 : 1);
	fip_display_symbol(COLON_MIN_SEC_FIP_ON, (hour==L_OFF && minute==L_OFF) ? 0 : 1);

	//title
	fip_display_character(6, (title==L_OFF) ? ' ' : title/10 + '0');
	fip_display_character(7, (title==L_OFF) ? ' ' : title%10 + '0');

	//chapter
	fip_display_character(8, (chapter==L_OFF) ? ' ' : chapter/10 + '0');
	fip_display_character(9, (chapter==L_OFF) ? ' ' : chapter%10 + '0');
}