cdriso: try some different buffering

diff --git a/Makefile b/Makefile
index 2985dbe..d269bb0 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,7 @@ CFLAGS += -Wall -Iinclude -ffast-math
 DEBUG ?= 0
 DEBUG_SYMS ?= 0
 ASSERTS ?= 0
+HAVE_CHD ?= 1
 ifneq ($(DEBUG)$(DEBUG_SYMS), 00)
 CFLAGS += -ggdb
 endif

diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c
index ff20731..9b98fbe 100644 (file)
--- a/libpcsxcore/cdriso.c
+++ b/libpcsxcore/cdriso.c
@@ -54,7 +54,6 @@ unsigned int cdrIsoMultidiskCount;
 unsigned int cdrIsoMultidiskSelect;
 
 static FILE *cdHandle = NULL;
-static FILE *cddaHandle = NULL;
 static FILE *subHandle = NULL;
 
 static boolean subChanMixed = FALSE;
@@ -173,6 +172,24 @@ static off_t get_size(FILE *f)
        return size;
 }
 
+// Some c libs like newlib default buffering to just 1k which is less than
+// cd sector size which is bad for performance.
+// Note that NULL setvbuf() is implemented differently by different libs
+// (newlib mallocs a buffer of given size and glibc ignores size and uses it's own).
+static void set_static_stdio_buffer(FILE *f)
+{
+#if !defined(fopen) // no stdio redirect
+       static char buf[16 * 1024];
+       if (f) {
+               int r;
+               errno = 0;
+               r = setvbuf(f, buf, _IOFBF, sizeof(buf));
+               if (r)
+                       SysPrintf("cdriso: setvbuf %d %d\n", r, errno);
+       }
+#endif
+}
+
 // this function tries to get the .toc file of the given .bin
 // the necessary data is put into the ti (trackinformation)-array
 static int parsetoc(const char *isofile) {
@@ -493,6 +510,7 @@ static int parsecue(const char *isofile) {
                fclose(cdHandle);
                cdHandle = ti[1].handle;
                ti[1].handle = NULL;
+               set_static_stdio_buffer(cdHandle);
        }
        return 0;
 }
@@ -952,13 +970,23 @@ fail_io:
 static int handlechd(const char *isofile) {
        int frame_offset = 150;
        int file_offset = 0;
+       int is_chd_ext = 0;
+       chd_error err;
 
+       if (strlen(isofile) >= 3) {
+               const char *ext = isofile + strlen(isofile) - 3;
+               is_chd_ext = !strcasecmp(ext, "chd");
+       }
        chd_img = calloc(1, sizeof(*chd_img));
        if (chd_img == NULL)
                goto fail_io;
 
-       if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE)
+       err = chd_open_file(cdHandle, CHD_OPEN_READ, NULL, &chd_img->chd);
+       if (err != CHDERR_NONE) {
+               if (is_chd_ext)
+                       SysPrintf("chd_open: %d\n", err);
                goto fail_io;
+       }
 
        if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE))
                goto fail_io;
@@ -1051,9 +1079,8 @@ static int opensubfile(const char *isoname) {
        }
 
        subHandle = fopen(subname, "rb");
-       if (subHandle == NULL) {
+       if (subHandle == NULL)
                return -1;
-       }
 
        return 0;
 }
@@ -1373,6 +1400,7 @@ int ISOopen(const char *fname)
                        fname, strerror(errno));
                return -1;
        }
+       set_static_stdio_buffer(cdHandle);
        size_main = get_size(cdHandle);
 
        snprintf(image_str, sizeof(image_str) - 6*4 - 1,
@@ -1417,8 +1445,6 @@ int ISOopen(const char *fname)
                ISOgetBuffer = ISOgetBuffer_chd;
                cdimg_read_func = cdread_chd;
                cdimg_read_sub_func = cdread_sub_chd;
-               fclose(cdHandle);
-               cdHandle = NULL;
        }
 #endif
 
@@ -1452,6 +1478,7 @@ int ISOopen(const char *fname)
                        bin_filename = alt_bin_filename;
                        fclose(cdHandle);
                        cdHandle = tmpf;
+                       set_static_stdio_buffer(cdHandle);
                        size_main = get_size(cdHandle);
                }
        }
@@ -1496,7 +1523,6 @@ int ISOclose(void)
                fclose(subHandle);
                subHandle = NULL;
        }
-       cddaHandle = NULL;
 
        if (compr_img != NULL) {
                free(compr_img->index_table);