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dep/libchdr: Add chd_precache_progress() 

Alternative which reports back as the file is read.
This commit is contained in:
Connor McLaughlin 2022-04-03 20:54:53 +10:00
parent bceca040d9
commit ec9411c0a7
3 changed files with 37 additions and 26 deletions
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1
dep/libchdr/include/libchdr/chd.h
View File

@ -375,6 +375,7 @@ CHD_EXPORT chd_error chd_open(const char *filename, int mode, chd_file *parent,
/* precache underlying file */
CHD_EXPORT chd_error chd_precache(chd_file *chd);
CHD_EXPORT chd_error chd_precache_progress(chd_file* chd, void(*progress)(size_t pos, size_t total, void* param), void* param);
/* close a CHD file */
CHD_EXPORT void chd_close(chd_file *chd);

20
dep/libchdr/include/libchdr/coretypes.h
View File

@ -4,21 +4,8 @@
#include <stdint.h>
#include <stdio.h>
#ifdef USE_LIBRETRO_VFS
#include <streams/file_stream_transforms.h>
#endif
#define ARRAY_LENGTH(x) (sizeof(x)/sizeof(x[0]))
#if defined(__PS3__) || defined(__PSL1GHT__)
#undef UINT32
#undef UINT16
#undef UINT8
#undef INT32
#undef INT16
#undef INT8
#endif
typedef uint64_t UINT64;
typedef uint32_t UINT32;
typedef uint16_t UINT16;
@ -32,10 +19,7 @@ typedef int8_t INT8;
#define core_file FILE
#define core_fopen(file) fopen(file, "rb")
#if defined USE_LIBRETRO_VFS
#define core_fseek fseek
#define core_ftell ftell
#elif defined(__WIN32__) || defined(_WIN32) || defined(WIN32) || defined(__WIN64__)
#if defined(__WIN32__) || defined(_WIN32) || defined(WIN32) || defined(__WIN64__)
#define core_fseek _fseeki64
#define core_ftell _ftelli64
#elif defined(_LARGEFILE_SOURCE) && defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64
@ -51,7 +35,7 @@ typedef int8_t INT8;
#define core_fread(fc, buff, len) fread(buff, 1, len, fc)
#define core_fclose fclose
static UINT64 core_fsize(core_file *f)
static inline UINT64 core_fsize(core_file *f)
{
UINT64 rv;
UINT64 p = core_ftell(f);

42
dep/libchdr/src/libchdr_chd.c
View File

@ -1530,12 +1530,19 @@ cleanup:
memory
-------------------------------------------------*/
CHD_EXPORT chd_error chd_precache(chd_file *chd)
CHD_EXPORT chd_error chd_precache(chd_file* chd)
{
return chd_precache_progress(chd, NULL, NULL);
}
CHD_EXPORT chd_error chd_precache_progress(chd_file *chd, void(*progress)(size_t pos, size_t total, void* param), void* param)
{
#define PRECACHE_CHUNK_SIZE 16 * 1024 * 1024
#ifdef _MSC_VER
size_t size, count;
size_t size, done, req_count, count, last_update_done, update_interval;
#else
ssize_t size, count;
ssize_t size, done, req_count, count, last_update_done, update_interval;
#endif
if (chd->file_cache == NULL)
@ -1548,12 +1555,31 @@ CHD_EXPORT chd_error chd_precache(chd_file *chd)
if (chd->file_cache == NULL)
return CHDERR_OUT_OF_MEMORY;
core_fseek(chd->file, 0, SEEK_SET);
count = core_fread(chd->file, chd->file_cache, size);
if (count != size)
done = 0;
last_update_done = 0;
update_interval = ((size + 99) / 100);
while (done < size)
{
free(chd->file_cache);
chd->file_cache = NULL;
return CHDERR_READ_ERROR;
req_count = size - done;
if (req_count > PRECACHE_CHUNK_SIZE)
req_count = PRECACHE_CHUNK_SIZE;
count = core_fread(chd->file, chd->file_cache + done, req_count);
if (count != req_count)
{
free(chd->file_cache);
chd->file_cache = NULL;
return CHDERR_READ_ERROR;
}
done += req_count;
if (progress != NULL && (done - last_update_done) >= update_interval && done != size)
{
last_update_done = done;
progress(done, size, param);
}
}
}