mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
314 lines
7.8 KiB
C
314 lines
7.8 KiB
C
#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 dprintf
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//#define cdprintf(x...)
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#define DEBUG_CD
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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, iso_name_len;
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_scd_track *Tracks = Pico_mcd->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.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.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].ftype = 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].Length = file_stat.st_size;
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if (Tracks[0].ftype == TYPE_ISO) Tracks[0].Length >>= 11; // size in sectors
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else Tracks[0].Length /= 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].ftype = 0;
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Tracks[0].Length = 0;
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return -1;
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}
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if (Tracks[0].ftype == 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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Tracks[0].MSF.M = 0; // minutes
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Tracks[0].MSF.S = 2; // seconds
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Tracks[0].MSF.F = 0; // frames
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cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
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Cur_LBA = Tracks[0].Length; // Size in sectors
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strcpy(tmp_name, iso_name);
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iso_name_len = strlen(iso_name);
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for (num_track = 2, i = 0; i < 100; i++)
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{
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for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
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{
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int ext_len;
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sprintf(tmp_ext, exts[j], i);
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ext_len = strlen(tmp_ext);
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memcpy(tmp_name, iso_name, iso_name_len + 1);
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tmp_name[iso_name_len - 4] = 0;
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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 && i > 1 && iso_name_len > ext_len) {
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tmp_name[iso_name_len - ext_len] = 0;
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strcat(tmp_name, tmp_ext);
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tmp_file = fopen(tmp_name, "rb");
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}
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if (tmp_file)
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{
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// float fs;
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int fs;
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index = num_track - 1;
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ret = stat(tmp_name, &file_stat);
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fs = file_stat.st_size; // used to calculate lenght
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Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
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Tracks[index].KBtps >>= 3;
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if (ret != 0 || Tracks[index].KBtps <= 0)
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{
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cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
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fclose(tmp_file);
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continue;
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}
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Tracks[index].F = tmp_file;
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LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
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// MP3 File
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Tracks[index].ftype = TYPE_MP3;
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fs *= 75;
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fs /= Tracks[index].KBtps * 1000;
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Tracks[index].Length = fs;
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Cur_LBA += Tracks[index].Length;
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cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
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Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
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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->TOC.Last_Track = num_track - 1;
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index = num_track - 1;
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LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
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cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
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Tracks[index].MSF.S, 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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if (Pico_mcd == NULL) return;
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for(i = 0; i < 100; i++)
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{
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if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F);
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Pico_mcd->TOC.Tracks[i].F = NULL;
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Pico_mcd->TOC.Tracks[i].Length = 0;
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Pico_mcd->TOC.Tracks[i].ftype = 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 = 0;
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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 (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
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if (Pico_mcd->scd.Cur_LBA < 0)
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where_read = 0;
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else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
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where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
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else where_read = Pico_mcd->scd.Cur_LBA;
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if (Pico_mcd->TOC.Tracks[0].ftype == TYPE_ISO) where_read <<= 11;
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else where_read = (where_read * 2352 + 16);
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// moved below..
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//fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
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//fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
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cdprintf("Read 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 (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == 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("Read 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], &Pico_mcd->cdc.HEAD, 4);
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//memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
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fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
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fread(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
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#ifdef DEBUG_CD
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cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
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cdprintf("Header 1 = %.2X %.2X %.2X %.2X", 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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Pico_mcd->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 - 1;
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Pico_mcd->m.audio_track = index;
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cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
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if (Pico_mcd->TOC.Tracks[index].F == NULL)
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{
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return 1;
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}
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if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
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{
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int pos1024 = 0;
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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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if (Track_LBA_Pos)
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pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
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mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);
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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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