mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
398 lines
11 KiB
C
398 lines
11 KiB
C
/***********************************************************
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* *
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* This source was taken from the Gens project *
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* Written by Stéphane Dallongeville *
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* Copyright (c) 2002 by Stéphane Dallongeville *
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* Modified/adapted for PicoDrive by notaz, 2007 *
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* *
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***********************************************************/
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#include "../pico_int.h"
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#include "cd_file.h"
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#include "cue.h"
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//#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp
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static void to_upper(char *d, const char *s)
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{
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for (; *s != 0; d++, s++) {
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if ('a' <= *s && *s <= 'z')
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*d = *s - 'a' + 'A';
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else
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*d = *s;
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}
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}
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static int audio_track_mp3(const char *fname, int index)
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{
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_scd_track *Tracks = Pico_mcd->TOC.Tracks;
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FILE *tmp_file;
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int fs, ret;
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tmp_file = fopen(fname, "rb");
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if (tmp_file == NULL)
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return -1;
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ret = fseek(tmp_file, 0, SEEK_END);
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fs = ftell(tmp_file); // used to calculate length
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fseek(tmp_file, 0, SEEK_SET);
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#ifdef _PSP_FW_VERSION
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// some systems (like PSP) can't have many open files at a time,
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// so we work with their names instead.
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fclose(tmp_file);
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tmp_file = (void *) strdup(fname);
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#endif
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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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elprintf(EL_STATUS, "track %2i: mp3 bitrate %i", index+1, Tracks[index].KBtps);
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#ifdef _PSP_FW_VERSION
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free(tmp_file);
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#else
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fclose(tmp_file);
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#endif
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return -1;
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}
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Tracks[index].F = tmp_file;
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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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Tracks[index].Offset = 0;
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return 0;
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}
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PICO_INTERNAL int Load_CD_Image(const char *cd_img_name, cd_img_type type)
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{
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int i, j, num_track, Cur_LBA, index, ret, iso_name_len, missed, cd_img_sectors;
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_scd_track *Tracks = Pico_mcd->TOC.Tracks;
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char tmp_name[1024], tmp_ext[10], tmp_ext_u[10];
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cue_data_t *cue_data = NULL;
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pm_file *pmf;
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static const 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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};
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if (PicoCDLoadProgressCB != NULL)
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PicoCDLoadProgressCB(cd_img_name, 1);
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Unload_ISO();
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/* is this .cue? */
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ret = strlen(cd_img_name);
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if (ret >= 3 && strcasecmp(cd_img_name + ret - 3, "cue") == 0)
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cue_data = cue_parse(cd_img_name);
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if (cue_data != NULL)
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cd_img_name = cue_data->tracks[1].fname;
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Tracks[0].ftype = type == CIT_BIN ? TYPE_BIN : TYPE_ISO;
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Tracks[0].F = pmf = pm_open(cd_img_name);
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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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if (cue_data != NULL)
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cue_destroy(cue_data);
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return -1;
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}
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if (Tracks[0].ftype == TYPE_ISO)
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cd_img_sectors = pmf->size >>= 11; // size in sectors
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else cd_img_sectors = pmf->size /= 2352;
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Tracks[0].Offset = 0;
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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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elprintf(EL_STATUS, "Track 1: %02d:%02d:%02d %9i DATA",
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Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F, Tracks[0].Length);
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Cur_LBA = Tracks[0].Length = cd_img_sectors;
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if (cue_data != NULL)
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{
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if (cue_data->tracks[2].fname == NULL) { // NULL means track2 is in same file as track1
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Cur_LBA = Tracks[0].Length = cue_data->tracks[2].sector_offset;
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}
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i = 100 / cue_data->track_count+1;
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for (num_track = 2; num_track <= cue_data->track_count; num_track++)
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{
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if (PicoCDLoadProgressCB != NULL)
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PicoCDLoadProgressCB(cd_img_name, i * num_track);
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index = num_track - 1;
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Cur_LBA += cue_data->tracks[num_track].pregap;
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if (cue_data->tracks[num_track].type == CT_MP3) {
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ret = audio_track_mp3(cue_data->tracks[num_track].fname, index);
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if (ret != 0) break;
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}
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else
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{
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Tracks[index].ftype = cue_data->tracks[num_track].type;
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if (cue_data->tracks[num_track].fname != NULL)
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{
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pm_file *pmfn = pm_open(cue_data->tracks[num_track].fname);
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if (pmfn != NULL)
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{
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// addume raw, ignore header for wav..
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Tracks[index].F = pmfn;
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Tracks[index].Length = pmfn->size / 2352;
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Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
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}
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else
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{
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elprintf(EL_STATUS, "track %2i (%s): can't determine length",
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num_track, cue_data->tracks[num_track].fname);
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Tracks[index].Length = 2*75;
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Tracks[index].Offset = 0;
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}
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}
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else
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{
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if (num_track < cue_data->track_count)
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Tracks[index].Length = cue_data->tracks[num_track+1].sector_offset -
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cue_data->tracks[num_track].sector_offset;
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else
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Tracks[index].Length = cd_img_sectors - cue_data->tracks[num_track].sector_offset;
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Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
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}
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}
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if (cue_data->tracks[num_track].sector_xlength != 0)
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// overriden by custom cue command
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Tracks[index].Length = cue_data->tracks[num_track].sector_xlength;
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LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
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Cur_LBA += Tracks[index].Length;
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elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
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Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length,
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cue_data->tracks[num_track].fname);
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}
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cue_destroy(cue_data);
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goto finish;
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}
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/* mp3 track autosearch, Gens-like */
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iso_name_len = strlen(cd_img_name);
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if (iso_name_len >= sizeof(tmp_name))
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iso_name_len = sizeof(tmp_name) - 1;
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for (num_track = 2, i = 0, missed = 0; i < 100 && missed < 4; i++)
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{
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if (PicoCDLoadProgressCB != NULL && i > 1)
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PicoCDLoadProgressCB(cd_img_name, i + (100-i)*missed/4);
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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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char *p;
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index = num_track - 1;
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sprintf(tmp_ext, exts[j], i);
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ext_len = strlen(tmp_ext);
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to_upper(tmp_ext_u, tmp_ext);
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memcpy(tmp_name, cd_img_name, iso_name_len + 1);
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p = tmp_name + iso_name_len - 4;
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strcpy(p, tmp_ext);
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ret = audio_track_mp3(tmp_name, index);
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if (ret != 0) {
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strcpy(p, tmp_ext_u);
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ret = audio_track_mp3(tmp_name, index);
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}
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if (ret != 0 && i > 1 && iso_name_len > ext_len) {
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p = tmp_name + iso_name_len - ext_len;
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strcpy(p, tmp_ext);
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ret = audio_track_mp3(tmp_name, index);
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if (ret != 0) {
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strcpy(p, tmp_ext_u);
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ret = audio_track_mp3(tmp_name, index);
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}
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}
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if (ret == 0)
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{
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LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
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Cur_LBA += Tracks[index].Length;
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elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
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Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length, tmp_name);
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num_track++;
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missed = 0;
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break;
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}
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}
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if (ret != 0 && i > 1) missed++;
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}
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finish:
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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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elprintf(EL_STATUS, "End CD - %02d:%02d:%02d\n", Tracks[index].MSF.M,
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Tracks[index].MSF.S, Tracks[index].MSF.F);
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if (PicoCDLoadProgressCB != NULL)
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PicoCDLoadProgressCB(cd_img_name, 100);
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return 0;
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}
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PICO_INTERNAL 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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if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
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for(i = 1; i < 100; i++)
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{
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if (Pico_mcd->TOC.Tracks[i].F != NULL)
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{
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if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
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#ifdef _PSP_FW_VERSION
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free(Pico_mcd->TOC.Tracks[i].F);
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#else
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fclose(Pico_mcd->TOC.Tracks[i].F);
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#endif
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else
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pm_close(Pico_mcd->TOC.Tracks[i].F);
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}
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}
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memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
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}
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PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
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{
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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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// 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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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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int where_read = 0;
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// CAUTION : lookahead bit not implemented
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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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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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*(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
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//memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
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//pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
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//pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
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PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
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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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}
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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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// this is pretty rough, but oh well - not much depends on this anyway
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memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cdda_out_buffer, 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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elprintf(EL_INTS, "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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