--- /dev/null
+/***********************************************************
+ * *
+ * This source was taken from the Gens project *
+ * Written by Stéphane Dallongeville *
+ * Copyright (c) 2002 by Stéphane Dallongeville *
+ * Modified/adapted for PicoDrive by notaz, 2007 *
+ * *
+ ***********************************************************/
+
+#include "../pico_int.h"
+#include "cd_file.h"
+#include "cue.h"
+
+//#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp
+
+static int audio_track_mp3(const char *fname, int index)
+{
+ _scd_track *Tracks = Pico_mcd->TOC.Tracks;
+ FILE *tmp_file;
+ int fs, ret;
+
+ tmp_file = fopen(fname, "rb");
+ if (tmp_file == NULL)
+ return -1;
+
+ ret = fseek(tmp_file, 0, SEEK_END);
+ fs = ftell(tmp_file); // used to calculate length
+ fseek(tmp_file, 0, SEEK_SET);
+
+#if DONT_OPEN_MANY_FILES
+ // some systems (like PSP) can't have many open files at a time,
+ // so we work with their names instead.
+ fclose(tmp_file);
+ tmp_file = (void *) strdup(fname);
+#endif
+ Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
+ Tracks[index].KBtps >>= 3;
+ if (ret != 0 || Tracks[index].KBtps <= 0)
+ {
+ elprintf(EL_STATUS, "track %2i: mp3 bitrate %i", index+1, Tracks[index].KBtps);
+#if !DONT_OPEN_MANY_FILES
+ fclose(tmp_file);
+#else
+ free(tmp_file);
+#endif
+ return -1;
+ }
+
+ Tracks[index].F = tmp_file;
+
+ // MP3 File
+ Tracks[index].ftype = TYPE_MP3;
+ fs *= 75;
+ fs /= Tracks[index].KBtps * 1000;
+ Tracks[index].Length = fs;
+ Tracks[index].Offset = 0;
+
+ return 0;
+}
+
+PICO_INTERNAL int Load_CD_Image(const char *cd_img_name, cd_img_type type)
+{
+ int i, j, num_track, Cur_LBA, index, ret, iso_name_len, missed, cd_img_sectors;
+ _scd_track *Tracks = Pico_mcd->TOC.Tracks;
+ char tmp_name[1024], tmp_ext[10];
+ cue_data_t *cue_data = NULL;
+ pm_file *pmf;
+ static char *exts[] = {
+ "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
+ "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
+#if CASE_SENSITIVE_FS
+ "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
+#endif
+ };
+
+ if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(1);
+
+ Unload_ISO();
+
+ /* is this .cue? */
+ ret = strlen(cd_img_name);
+ if (ret >= 3 && strcasecmp(cd_img_name + ret - 3, "cue") == 0)
+ cue_data = cue_parse(cd_img_name);
+ if (cue_data != NULL)
+ cd_img_name = cue_data->tracks[1].fname;
+
+ Tracks[0].ftype = type == CIT_BIN ? TYPE_BIN : TYPE_ISO;
+
+ Tracks[0].F = pmf = pm_open(cd_img_name);
+ if (Tracks[0].F == NULL)
+ {
+ Tracks[0].ftype = 0;
+ Tracks[0].Length = 0;
+ if (cue_data != NULL)
+ cue_destroy(cue_data);
+ return -1;
+ }
+
+ if (Tracks[0].ftype == TYPE_ISO)
+ cd_img_sectors = pmf->size >>= 11; // size in sectors
+ else cd_img_sectors = pmf->size /= 2352;
+ Tracks[0].Offset = 0;
+
+ Tracks[0].MSF.M = 0; // minutes
+ Tracks[0].MSF.S = 2; // seconds
+ Tracks[0].MSF.F = 0; // frames
+
+ elprintf(EL_STATUS, "Track 1: %02d:%02d:%02d %9i DATA",
+ Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F, Tracks[0].Length);
+
+ Cur_LBA = Tracks[0].Length = cd_img_sectors;
+
+ if (cue_data != NULL)
+ {
+ if (cue_data->tracks[2].fname == NULL) { // NULL means track2 is in same file as track1
+ Cur_LBA = Tracks[0].Length = cue_data->tracks[2].sector_offset;
+ }
+ i = 100 / cue_data->track_count+1;
+ for (num_track = 2; num_track <= cue_data->track_count; num_track++)
+ {
+ if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(i * num_track);
+ index = num_track - 1;
+ Cur_LBA += cue_data->tracks[num_track].pregap;
+ if (cue_data->tracks[num_track].type == CT_MP3) {
+ ret = audio_track_mp3(cue_data->tracks[num_track].fname, index);
+ if (ret != 0) break;
+ }
+ else
+ {
+ Tracks[index].ftype = cue_data->tracks[num_track].type;
+ if (cue_data->tracks[num_track].fname != NULL)
+ {
+ pm_file *pmfn = pm_open(cue_data->tracks[num_track].fname);
+ if (pmfn != NULL)
+ {
+ // addume raw, ignore header for wav..
+ Tracks[index].F = pmfn;
+ Tracks[index].Length = pmfn->size / 2352;
+ Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
+ }
+ else
+ {
+ elprintf(EL_STATUS, "track %2i (%s): can't determine length",
+ num_track, cue_data->tracks[num_track].fname);
+ Tracks[index].Length = 2*75;
+ Tracks[index].Offset = 0;
+ }
+ }
+ else
+ {
+ if (num_track < cue_data->track_count)
+ Tracks[index].Length = cue_data->tracks[num_track+1].sector_offset -
+ cue_data->tracks[num_track].sector_offset;
+ else
+ Tracks[index].Length = cd_img_sectors - cue_data->tracks[num_track].sector_offset;
+ Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
+ }
+ }
+
+ if (cue_data->tracks[num_track].sector_xlength != 0)
+ // overriden by custom cue command
+ Tracks[index].Length = cue_data->tracks[num_track].sector_xlength;
+
+ LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
+ Cur_LBA += Tracks[index].Length;
+
+ elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
+ Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length,
+ cue_data->tracks[num_track].fname);
+ }
+ cue_destroy(cue_data);
+ goto finish;
+ }
+
+ /* mp3 track autosearch, Gens-like */
+ iso_name_len = strlen(cd_img_name);
+ if (iso_name_len >= sizeof(tmp_name))
+ iso_name_len = sizeof(tmp_name) - 1;
+
+ for (num_track = 2, i = 0, missed = 0; i < 100 && missed < 4; i++)
+ {
+ if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i + (100-i)*missed/4);
+
+ for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
+ {
+ int ext_len;
+ sprintf(tmp_ext, exts[j], i);
+ ext_len = strlen(tmp_ext);
+
+ memcpy(tmp_name, cd_img_name, iso_name_len + 1);
+ tmp_name[iso_name_len - 4] = 0;
+ strcat(tmp_name, tmp_ext);
+
+ index = num_track - 1;
+ ret = audio_track_mp3(tmp_name, index);
+ if (ret != 0 && i > 1 && iso_name_len > ext_len) {
+ tmp_name[iso_name_len - ext_len] = 0;
+ strcat(tmp_name, tmp_ext);
+ ret = audio_track_mp3(tmp_name, index);
+ }
+
+ if (ret == 0)
+ {
+ LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
+ Cur_LBA += Tracks[index].Length;
+
+ elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
+ Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length, tmp_name);
+
+ num_track++;
+ missed = 0;
+ break;
+ }
+ }
+ if (ret != 0 && i > 1) missed++;
+ }
+
+finish:
+ Pico_mcd->TOC.Last_Track = num_track - 1;
+
+ index = num_track - 1;
+
+ LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
+
+ elprintf(EL_STATUS, "End CD - %02d:%02d:%02d\n", Tracks[index].MSF.M,
+ Tracks[index].MSF.S, Tracks[index].MSF.F);
+
+ if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100);
+
+ return 0;
+}
+
+
+PICO_INTERNAL void Unload_ISO(void)
+{
+ int i;
+
+ if (Pico_mcd == NULL) return;
+
+ if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
+
+ for(i = 1; i < 100; i++)
+ {
+ if (Pico_mcd->TOC.Tracks[i].F != NULL)
+ {
+ if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
+#if DONT_OPEN_MANY_FILES
+ free(Pico_mcd->TOC.Tracks[i].F);
+#else
+ fclose(Pico_mcd->TOC.Tracks[i].F);
+#endif
+ else
+ pm_close(Pico_mcd->TOC.Tracks[i].F);
+ }
+ }
+ memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
+}
+
+
+PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
+{
+ if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
+ {
+ if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
+
+ // moved below..
+ //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
+ //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
+
+ cdprintf("Read file CDC 1 data sector :\n");
+ }
+ else // AUDIO
+ {
+ cdprintf("Read file CDC 1 audio sector :\n");
+ }
+
+ // Update CDC stuff
+
+ CDC_Update_Header();
+
+ if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
+ {
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
+ {
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
+ {
+ int where_read = 0;
+
+ // CAUTION : lookahead bit not implemented
+
+ if (Pico_mcd->scd.Cur_LBA < 0)
+ where_read = 0;
+ else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
+ where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
+ else where_read = Pico_mcd->scd.Cur_LBA;
+
+ Pico_mcd->scd.Cur_LBA++;
+
+ Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
+ Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
+
+ *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
+ //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
+
+ //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
+ //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
+ PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
+
+ cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
+ cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
+ Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
+ cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
+ Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
+ }
+
+ }
+ }
+ else // music track
+ {
+ Pico_mcd->scd.Cur_LBA++;
+
+ Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
+ Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
+
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
+ {
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
+ {
+ // CAUTION : lookahead bit not implemented
+
+ // this is pretty rough, but oh well - not much depends on this anyway
+ memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cdda_out_buffer, 2352);
+ }
+ }
+ }
+
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
+ {
+ Pico_mcd->cdc.STAT.B.B0 = 0x80;
+
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
+ {
+ Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
+ }
+ else
+ {
+ Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
+ }
+
+ if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
+ else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
+
+ if (Pico_mcd->cdc.IFCTRL & 0x20)
+ {
+ if (Pico_mcd->s68k_regs[0x33] & (1<<5))
+ {
+ elprintf(EL_INTS, "cdc dec irq 5");
+ SekInterruptS68k(5);
+ }
+
+ Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
+ Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int
+ }
+ }
+
+
+ return 0;
+}
+
notaz.gp2x.de / picodrive.git / blobdiff