#include <sys/syscall.h>
#endif
+#include "retro_miscellaneous.h"
#ifdef SWITCH
#include <switch.h>
#endif
}
}
+#ifdef HAVE_CDROM
+static long CALLBACK rcdrom_open(void);
+static long CALLBACK rcdrom_close(void);
+#endif
+
static bool disk_set_eject_state(bool ejected)
{
// weird PCSX API..
SetCdOpenCaseTime(ejected ? -1 : (time(NULL) + 2));
LidInterrupt();
+#ifdef HAVE_CDROM
+ if (CDR_open == rcdrom_open) {
+ // likely the real cd was also changed - rescan
+ rcdrom_close();
+ if (!ejected)
+ rcdrom_open();
+ }
+#endif
disk_ejected = ejected;
return true;
}
if (!disk_ejected)
{
- SetCdOpenCaseTime(time(NULL) + 2);
- LidInterrupt();
+ disk_set_eject_state(disk_ejected);
}
disk_current_index = index;
}
}
+// raw cdrom support
+#ifdef HAVE_CDROM
+#include "vfs/vfs_implementation.h"
+#include "vfs/vfs_implementation_cdrom.h"
+#include "libretro-cdrom.h"
+#include "rthreads/rthreads.h"
+#include "retro_timers.h"
+struct cached_buf {
+ unsigned char buf[2352];
+ unsigned int lba;
+};
+static struct {
+ libretro_vfs_implementation_file *h;
+ sthread_t *thread;
+ slock_t *read_lock;
+ slock_t *buf_lock;
+ scond_t *cond;
+ struct cached_buf *buf;
+ unsigned int buf_cnt, thread_exit, do_prefetch;
+ unsigned int total_lba, prefetch_lba;
+} rcdrom;
+
+static void lbacache_do(unsigned int lba)
+{
+ unsigned char m, s, f, buf[2352];
+ unsigned int i = lba % rcdrom.buf_cnt;
+ int ret;
+
+ cdrom_lba_to_msf(lba + 150, &m, &s, &f);
+ slock_lock(rcdrom.read_lock);
+ ret = cdrom_read_sector(rcdrom.h, lba, buf);
+ slock_lock(rcdrom.buf_lock);
+ slock_unlock(rcdrom.read_lock);
+ //printf("%d:%02d:%02d m%d f%d\n", m, s, f, buf[12+3], ((buf[12+4+2] >> 5) & 1) + 1);
+ if (ret) {
+ rcdrom.do_prefetch = 0;
+ slock_unlock(rcdrom.buf_lock);
+ LogErr("cdrom_read_sector failed for lba %d\n", ret, lba);
+ return;
+ }
+
+ if (lba != rcdrom.buf[i].lba) {
+ memcpy(rcdrom.buf[i].buf, buf, sizeof(rcdrom.buf[i].buf));
+ rcdrom.buf[i].lba = lba;
+ }
+ slock_unlock(rcdrom.buf_lock);
+ retro_sleep(0); // why does the main thread stall without this?
+}
+
+static int lbacache_get(unsigned int lba, void *buf)
+{
+ unsigned int i;
+ int ret = 0;
+
+ i = lba % rcdrom.buf_cnt;
+ slock_lock(rcdrom.buf_lock);
+ if (lba == rcdrom.buf[i].lba) {
+ memcpy(buf, rcdrom.buf[i].buf, 2352);
+ ret = 1;
+ }
+ slock_unlock(rcdrom.buf_lock);
+ return ret;
+}
+
+static void rcdrom_prefetch_thread(void *unused)
+{
+ unsigned int buf_cnt, lba, lba_to;
+
+ slock_lock(rcdrom.buf_lock);
+ while (!rcdrom.thread_exit)
+ {
+#ifdef __GNUC__
+ __asm__ __volatile__("":::"memory"); // barrier
+#endif
+ if (!rcdrom.do_prefetch)
+ scond_wait(rcdrom.cond, rcdrom.buf_lock);
+ if (!rcdrom.do_prefetch || !rcdrom.h || rcdrom.thread_exit)
+ continue;
+
+ buf_cnt = rcdrom.buf_cnt;
+ lba = rcdrom.prefetch_lba;
+ lba_to = lba + buf_cnt;
+ if (lba_to > rcdrom.total_lba)
+ lba_to = rcdrom.total_lba;
+ for (; lba < lba_to; lba++) {
+ if (lba != rcdrom.buf[lba % buf_cnt].lba)
+ break;
+ }
+ if (lba == lba_to) {
+ // caching complete
+ rcdrom.do_prefetch = 0;
+ continue;
+ }
+
+ slock_unlock(rcdrom.buf_lock);
+ lbacache_do(lba);
+ slock_lock(rcdrom.buf_lock);
+ }
+ slock_unlock(rcdrom.buf_lock);
+}
+
+static void rcdrom_stop_thread(void)
+{
+ rcdrom.thread_exit = 1;
+ if (rcdrom.buf_lock) {
+ slock_lock(rcdrom.buf_lock);
+ rcdrom.do_prefetch = 0;
+ if (rcdrom.cond)
+ scond_signal(rcdrom.cond);
+ slock_unlock(rcdrom.buf_lock);
+ }
+ if (rcdrom.thread) {
+ sthread_join(rcdrom.thread);
+ rcdrom.thread = NULL;
+ }
+ if (rcdrom.cond) { scond_free(rcdrom.cond); rcdrom.cond = NULL; }
+ if (rcdrom.buf_lock) { slock_free(rcdrom.buf_lock); rcdrom.buf_lock = NULL; }
+ if (rcdrom.read_lock) { slock_free(rcdrom.read_lock); rcdrom.read_lock = NULL; }
+ free(rcdrom.buf);
+ rcdrom.buf = NULL;
+}
+
+// the thread is optional, if anything fails we can do direct reads
+static void rcdrom_start_thread(void)
+{
+ rcdrom_stop_thread();
+ rcdrom.thread_exit = rcdrom.prefetch_lba = rcdrom.do_prefetch = 0;
+ if (rcdrom.buf_cnt == 0)
+ return;
+ rcdrom.buf = calloc(rcdrom.buf_cnt, sizeof(rcdrom.buf[0]));
+ rcdrom.buf_lock = slock_new();
+ rcdrom.read_lock = slock_new();
+ rcdrom.cond = scond_new();
+ if (rcdrom.buf && rcdrom.buf_lock && rcdrom.read_lock && rcdrom.cond) {
+ rcdrom.thread = sthread_create(rcdrom_prefetch_thread, NULL);
+ rcdrom.buf[0].lba = ~0;
+ }
+ if (!rcdrom.thread) {
+ LogErr("cdrom precache thread init failed.\n");
+ rcdrom_stop_thread();
+ }
+}
+
+static long CALLBACK rcdrom_open(void)
+{
+ const char *name = GetIsoFile();
+ //printf("%s %s\n", __func__, name);
+ rcdrom.h = retro_vfs_file_open_impl(name, RETRO_VFS_FILE_ACCESS_READ,
+ RETRO_VFS_FILE_ACCESS_HINT_NONE);
+ if (rcdrom.h) {
+ int ret = cdrom_set_read_speed_x(rcdrom.h, 4);
+ if (ret) LogErr("CD speed set failed\n");
+ const cdrom_toc_t *toc = retro_vfs_file_get_cdrom_toc();
+ const cdrom_track_t *last = &toc->track[toc->num_tracks - 1];
+ unsigned int lba = cdrom_msf_to_lba(last->min, last->sec, last->frame) - 150;
+ rcdrom.total_lba = lba + last->track_size;
+ //cdrom_get_current_config_random_readable(rcdrom.h);
+ //cdrom_get_current_config_multiread(rcdrom.h);
+ //cdrom_get_current_config_cdread(rcdrom.h);
+ //cdrom_get_current_config_profiles(rcdrom.h);
+ rcdrom_start_thread();
+ return 0;
+ }
+ LogErr("retro_vfs_file_open failed for '%s'\n", name);
+ return -1;
+}
+
+static long CALLBACK rcdrom_close(void)
+{
+ //printf("%s\n", __func__);
+ if (rcdrom.h) {
+ rcdrom_stop_thread();
+ retro_vfs_file_close_impl(rcdrom.h);
+ rcdrom.h = NULL;
+ }
+ return 0;
+}
+
+static long CALLBACK rcdrom_getTN(unsigned char *tn)
+{
+ const cdrom_toc_t *toc = retro_vfs_file_get_cdrom_toc();
+ tn[0] = 1;
+ tn[1] = toc->num_tracks;
+ //printf("%s -> %d %d\n", __func__, tn[0], tn[1]);
+ return 0;
+}
+
+static long CALLBACK rcdrom_getTD(unsigned char track, unsigned char *rt)
+{
+ const cdrom_toc_t *toc = retro_vfs_file_get_cdrom_toc();
+ rt[0] = 0, rt[1] = 2, rt[2] = 0;
+ if (track == 0) {
+ cdrom_lba_to_msf(rcdrom.total_lba + 150, &rt[2], &rt[1], &rt[0]);
+ }
+ else if (track <= toc->num_tracks) {
+ int i = track - 1;
+ rt[2] = toc->track[i].min;
+ rt[1] = toc->track[i].sec;
+ rt[0] = toc->track[i].frame;
+ }
+ //printf("%s %d -> %d:%02d:%02d\n", __func__, track, rt[2], rt[1], rt[0]);
+ return 0;
+}
+
+static long CALLBACK rcdrom_prefetch(unsigned char m, unsigned char s, unsigned char f)
+{
+ unsigned int lba = cdrom_msf_to_lba(m, s, f) - 150;
+ if (rcdrom.cond && rcdrom.h) {
+ rcdrom.prefetch_lba = lba;
+ rcdrom.do_prefetch = 1;
+ scond_signal(rcdrom.cond);
+ }
+ if (rcdrom.buf) {
+ unsigned int c = rcdrom.buf_cnt;
+ if (c)
+ return rcdrom.buf[lba % c].lba == lba;
+ }
+ return 1;
+}
+
+static int rcdrom_read_msf(unsigned char m, unsigned char s, unsigned char f,
+ void *buf, const char *func)
+{
+ unsigned int lba = cdrom_msf_to_lba(m, s, f) - 150;
+ int hit = 0, ret = -1;
+ if (rcdrom.buf_lock)
+ hit = lbacache_get(lba, buf);
+ if (!hit && rcdrom.read_lock) {
+ // maybe still prefetching
+ slock_lock(rcdrom.read_lock);
+ slock_unlock(rcdrom.read_lock);
+ hit = lbacache_get(lba, buf);
+ if (hit)
+ hit = 2;
+ }
+ if (!hit) {
+ slock_t *lock = rcdrom.read_lock;
+ rcdrom.do_prefetch = 0;
+ if (lock)
+ slock_lock(lock);
+ if (rcdrom.h)
+ ret = cdrom_read_sector(rcdrom.h, lba, buf);
+ if (lock)
+ slock_unlock(lock);
+ }
+ else
+ ret = 0;
+ //printf("%s %d:%02d:%02d -> %d hit %d\n", func, m, s, f, ret, hit);
+ return ret;
+}
+
+static boolean CALLBACK rcdrom_readTrack(unsigned char *time)
+{
+ unsigned char m = btoi(time[0]), s = btoi(time[1]), f = btoi(time[2]);
+ return !rcdrom_read_msf(m, s, f, ISOgetBuffer() - 12, __func__);
+}
+
+static long CALLBACK rcdrom_readCDDA(unsigned char m, unsigned char s, unsigned char f,
+ unsigned char *buffer)
+{
+ return rcdrom_read_msf(m, s, f, buffer, __func__);
+}
+
+static unsigned char * CALLBACK rcdrom_getBuffer(void)
+{
+ //printf("%s\n", __func__);
+ return ISOgetBuffer();
+}
+
+static unsigned char * CALLBACK rcdrom_getBufferSub(int sector)
+{
+ //printf("%s %d %d\n", __func__, sector, rcdrom_h->cdrom.last_frame_lba);
+ return NULL;
+}
+
+static long CALLBACK rcdrom_getStatus(struct CdrStat *stat)
+{
+ const cdrom_toc_t *toc = retro_vfs_file_get_cdrom_toc();
+ //printf("%s %p\n", __func__, stat);
+ CDR__getStatus(stat);
+ stat->Type = toc->track[0].audio ? 2 : 1;
+ return 0;
+}
+#endif // HAVE_CDROM
+
#if defined(__QNX__) || defined(_WIN32)
/* Blackberry QNX doesn't have strcasestr */
LogErr("failed to load plugins\n");
return false;
}
+ if (!strncmp(info->path, "cdrom:", 6))
+ {
+#ifdef HAVE_CDROM
+ CDR_open = rcdrom_open;
+ CDR_close = rcdrom_close;
+ CDR_getTN = rcdrom_getTN;
+ CDR_getTD = rcdrom_getTD;
+ CDR_readTrack = rcdrom_readTrack;
+ CDR_getBuffer = rcdrom_getBuffer;
+ CDR_getBufferSub = rcdrom_getBufferSub;
+ CDR_getStatus = rcdrom_getStatus;
+ CDR_readCDDA = rcdrom_readCDDA;
+ CDR_prefetch = rcdrom_prefetch;
+#elif !defined(USE_LIBRETRO_VFS)
+ ReleasePlugins();
+ LogErr("%s\n", "Physical CD-ROM support is not compiled in.");
+ show_notification("Physical CD-ROM support is not compiled in.", 6000, 3);
+ return false;
+#endif
+ }
plugins_opened = 1;
NetOpened = 0;
display_internal_fps = true;
}
+#ifdef HAVE_CDROM
+ var.value = NULL;
+ var.key = "pcsx_rearmed_phys_cd_readahead";
+ if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+ {
+ long newval = strtol(var.value, NULL, 10);
+ bool changed = rcdrom.buf_cnt != newval;
+ if (rcdrom.h && changed)
+ rcdrom_stop_thread();
+ rcdrom.buf_cnt = newval;
+ if (rcdrom.h && changed) {
+ rcdrom_start_thread();
+ if (rcdrom.cond && rcdrom.prefetch_lba) {
+ rcdrom.do_prefetch = 1;
+ scond_signal(rcdrom.cond);
+ }
+ }
+ }
+#endif
+
//
// CPU emulation related config
#ifndef DRC_DISABLE
notaz.gp2x.de / pcsx_rearmed.git / blobdiff