mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
326 lines
7.6 KiB
C
326 lines
7.6 KiB
C
/*
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#include <stdio.h>
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#include <string.h>
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#if defined(__WIN__)
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#include <windows.h>
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#else
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#include "port.h"
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#endif
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#include "cd_sys.h"
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#include "cd_file.h"
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#include "lc89510.h"
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#include "cdda_mp3.h"
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#include "star_68k.h"
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#include "rom.h"
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#include "mem_s68k.h"
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*/
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#include <sys/stat.h>
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#include "cd_file.h"
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#include "../PicoInt.h"
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#define cdprintf printf
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//#define cdprintf(x...)
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struct _file_track Tracks[100];
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char Track_Played;
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int FILE_Init(void)
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{
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// MP3_Init(); // TODO
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Unload_ISO();
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return 0;
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}
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void FILE_End(void)
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{
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Unload_ISO();
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}
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int Load_ISO(const char *iso_name, int is_bin)
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{
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struct stat file_stat;
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int i, j, num_track, Cur_LBA, index, ret;
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_scd_track *SCD_TOC_Tracks = Pico_mcd->scd.TOC.Tracks;
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FILE *tmp_file;
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char tmp_name[1024], tmp_ext[10];
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static char *exts[] = {
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"%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
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"%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
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/* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
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"%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
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};
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Unload_ISO();
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Tracks[0].Type = is_bin ? TYPE_BIN : TYPE_ISO;
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ret = stat(iso_name, &file_stat);
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if (ret != 0) return -1;
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Tracks[0].Lenght = file_stat.st_size;
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if (Tracks[0].Type == TYPE_ISO) Tracks[0].Lenght >>= 11; // size in sectors
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else Tracks[0].Lenght /= 2352; // size in sectors
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Tracks[0].F = fopen(iso_name, "rb");
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if (Tracks[0].F == NULL)
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{
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Tracks[0].Type = 0;
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Tracks[0].Lenght = 0;
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return -1;
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}
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if (Tracks[0].Type == TYPE_ISO) fseek(Tracks[0].F, 0x100, SEEK_SET);
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else fseek(Tracks[0].F, 0x110, SEEK_SET);
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// fread(buf, 1, 0x200, Tracks[0].F);
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fseek(Tracks[0].F, 0, SEEK_SET);
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Pico_mcd->scd.TOC.First_Track = 1;
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SCD_TOC_Tracks[0].Num = 1;
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SCD_TOC_Tracks[0].Type = 1; // DATA
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SCD_TOC_Tracks[0].MSF.M = 0;
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SCD_TOC_Tracks[0].MSF.S = 2;
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SCD_TOC_Tracks[0].MSF.F = 0;
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cdprintf("\nTrack 0 - %02d:%02d:%02d %s\n", SCD_TOC_Tracks[0].MSF.M, SCD_TOC_Tracks[0].MSF.S, SCD_TOC_Tracks[0].MSF.F,
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SCD_TOC_Tracks[0].Type ? "DATA" : "AUDIO");
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Cur_LBA = Tracks[0].Lenght; // Size in sectors
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strcpy(tmp_name, iso_name);
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for(num_track = 2, i = 0; i < 100; i++)
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{
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if (sizeof(exts)/sizeof(char *) != 10) { printf("eee"); exit(1); }
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for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
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{
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tmp_name[strlen(iso_name) - 4] = 0;
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sprintf(tmp_ext, exts[j], i);
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strcat(tmp_name, tmp_ext);
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tmp_file = fopen(tmp_name, "rb");
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if (tmp_file)
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{
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float fs;
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index = num_track - Pico_mcd->scd.TOC.First_Track;
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stat(tmp_name, &file_stat);
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fs = (float) file_stat.st_size; // used to calculate lenght
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Tracks[index].F = tmp_file;
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SCD_TOC_Tracks[index].Num = num_track;
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SCD_TOC_Tracks[index].Type = 0; // AUDIO
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LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
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cdprintf("\nTrack %i - %02d:%02d:%02d %s\n", index, SCD_TOC_Tracks[index].MSF.M,
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SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F,
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SCD_TOC_Tracks[index].Type ? "DATA" : "AUDIO");
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// MP3 File
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Tracks[index].Type = TYPE_MP3;
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fs /= (128>>3); // (float) (MP3_Get_Bitrate(Tracks[num_track - 1].F) >> 3);
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fs *= 75;
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Tracks[index].Lenght = (int) fs;
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Cur_LBA += Tracks[index].Lenght;
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num_track++;
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break;
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}
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}
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}
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Pico_mcd->scd.TOC.Last_Track = num_track - 1;
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index = num_track - Pico_mcd->scd.TOC.First_Track;
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SCD_TOC_Tracks[index].Num = num_track;
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SCD_TOC_Tracks[index].Type = 0;
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LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
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cdprintf("End CD - %02d:%02d:%02d\n\n", SCD_TOC_Tracks[index].MSF.M,
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SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F);
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return 0;
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}
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void Unload_ISO(void)
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{
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int i;
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Track_Played = 99;
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for(i = 0; i < 100; i++)
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{
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if (Tracks[i].F) fclose(Tracks[i].F);
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Tracks[i].F = NULL;
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Tracks[i].Lenght = 0;
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Tracks[i].Type = 0;
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}
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}
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int FILE_Read_One_LBA_CDC(void)
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{
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int where_read;
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static char cp_buf[2560];
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if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
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{
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if (Tracks[0].F == NULL) return -1;
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if (Pico_mcd->scd.Cur_LBA < 0) where_read = 0;
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else if (Pico_mcd->scd.Cur_LBA >= Tracks[0].Lenght) where_read = Tracks[0].Lenght - 1;
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else where_read = Pico_mcd->scd.Cur_LBA;
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if (Tracks[0].Type == TYPE_ISO) where_read <<= 11;
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else where_read = (where_read * 2352 + 16);
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fseek(Tracks[0].F, where_read, SEEK_SET);
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fread(cp_buf, 1, 2048, Tracks[0].F);
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cdprintf("\n\nRead file CDC 1 data sector :\n");
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}
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else // AUDIO
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{
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// int rate, channel;
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if (Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type == TYPE_MP3)
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{
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// TODO
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// MP3_Update(cp_buf, &rate, &channel, 0);
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// Write_CD_Audio((short *) cp_buf, rate, channel, 588);
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}
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cdprintf("\n\nRead file CDC 1 audio sector :\n");
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}
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// Update CDC stuff
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CDC_Update_Header();
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if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
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{
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
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{
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
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{
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// CAUTION : lookahead bit not implemented
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Pico_mcd->scd.Cur_LBA++;
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Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
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Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
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memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
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memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], &Pico_mcd->cdc.HEAD, 4);
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#ifdef DEBUG_CD
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cdprintf("\nRead -> WA = %d Buffer[%d] =\n", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
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cdprintf("Header 1 = %.2X %.2X %.2X %.2X\n", Pico_mcd->cdc.HEAD.B.B0,
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Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
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cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
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Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
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#endif
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}
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}
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}
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else // music track
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{
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Pico_mcd->scd.Cur_LBA++;
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Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
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Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
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{
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
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{
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// CAUTION : lookahead bit not implemented
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memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
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}
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}
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}
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
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{
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Pico_mcd->cdc.STAT.B.B0 = 0x80;
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
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{
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Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
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}
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else
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{
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Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
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}
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if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
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else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
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if (Pico_mcd->cdc.IFCTRL & 0x20)
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{
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if (Pico_mcd->s68k_regs[0x33] & (1<<5))
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{
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dprintf("cdc dec irq 5");
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SekInterruptS68k(5);
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}
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Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
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CDC_Decode_Reg_Read = 0; // Reset read after DEC int
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}
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}
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return 0;
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}
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int FILE_Play_CD_LBA(void)
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{
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int index = Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track;
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cdprintf("Play FILE Comp\n");
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if (Tracks[index].F == NULL)
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{
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return 1;
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}
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if (Tracks[index].Type == TYPE_MP3)
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{
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int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
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if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
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// MP3_Play(index, Track_LBA_Pos); // TODO
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}
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else
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{
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return 3;
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}
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return 0;
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}
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