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author Vas Crabb <cuavas@users.noreply.github.com>2021-08-22 09:06:15 +1000
committer GitHub <noreply@github.com>2021-08-22 09:06:15 +1000
commite8bbea1fc6e94e14768509d322f6c624403ffb36 (patch)
tree74dd1606a900d83de8aecff17a6737af4113308d /src/lib/formats/trd_dsk.cpp
parente319bde5fc3696d7f48f62b15b6366c4377fe5d1 (diff)
formats, osd, util: Started refactoring file I/O stuff. (#8456)
Added more modern generic I/O interfaces with implementation backed by stdio, osd_file and core_file, replacing io_generic. Also replaced core_file's build-in zlib compression with a filter. unzip.cpp, un7z.cpp: Added option to supply abstract I/O interface rather than filename. Converted osd_file, core_file, archive_file, chd_file and device_image_interface to use std::error_condition rather than their own error enums. Allow mounting TI-99 RPK from inside archives.
Diffstat (limited to 'src/lib/formats/trd_dsk.cpp')
-rw-r--r--src/lib/formats/trd_dsk.cpp17
1 files changed, 11 insertions, 6 deletions
diff --git a/src/lib/formats/trd_dsk.cpp b/src/lib/formats/trd_dsk.cpp
index 26b6ce5b6a5..4236259cca5 100644
--- a/src/lib/formats/trd_dsk.cpp
+++ b/src/lib/formats/trd_dsk.cpp
@@ -8,10 +8,11 @@
*********************************************************************/
-#include <cassert>
-
#include "formats/trd_dsk.h"
+#include "ioprocs.h"
+
+
trd_format::trd_format() : wd177x_format(formats)
{
}
@@ -31,10 +32,13 @@ const char *trd_format::extensions() const
return "trd";
}
-int trd_format::find_size(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int trd_format::find_size(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
+ uint64_t size;
+ if (io.length(size))
+ return -1;
+
int index = -1;
- uint64_t size = io_generic_size(io);
for (int i = 0; formats[i].form_factor; i++)
{
const format &f = formats[i];
@@ -47,12 +51,13 @@ int trd_format::find_size(io_generic *io, uint32_t form_factor, const std::vecto
{
index = i; // at least size match, save it for the case if there will be no exact matches
+ size_t actual;
uint8_t sectdata[0x100];
if (f.encoding == floppy_image::MFM)
- io_generic_read(io, sectdata, 0x800, 0x100);
+ io.read_at(0x800, sectdata, 0x100, actual);
else
{
- io_generic_read(io, sectdata, 0x100, 0x100);
+ io.read_at(0x100, sectdata, 0x100, actual);
for (int i = 0; i < 0x100; i++)
sectdata[i] ^= 0xff;
}