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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/ds9_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/ds9_dsk.cpp')
-rw-r--r--src/lib/formats/ds9_dsk.cpp24
1 files changed, 12 insertions, 12 deletions
diff --git a/src/lib/formats/ds9_dsk.cpp b/src/lib/formats/ds9_dsk.cpp
index fdf4f5e2299..c97a2cced51 100644
--- a/src/lib/formats/ds9_dsk.cpp
+++ b/src/lib/formats/ds9_dsk.cpp
@@ -14,10 +14,10 @@
************************************************************************/
-#include <cassert>
-
#include "formats/ds9_dsk.h"
+#include "ioprocs.h"
+
static FLOPPY_IDENTIFY(ds9_dsk_identify)
{
@@ -97,33 +97,32 @@ const char *ds9_format::extensions() const
return "ds9";
}
-void ds9_format::find_size(io_generic *io, uint8_t &track_count, uint8_t &head_count, uint8_t &sector_count)
+void ds9_format::find_size(util::random_read &io, uint8_t &track_count, uint8_t &head_count, uint8_t &sector_count)
{
- uint32_t expected_size = 0;
- uint64_t size = io_generic_size(io);
-
head_count = 2;
track_count = 80;
sector_count = 21;
- expected_size = 256 * track_count * head_count * sector_count;
+ uint32_t const expected_size = 256 * track_count * head_count * sector_count;
- if (size >= expected_size) // standard format has 860160 bytes
+ uint64_t size;
+ if (!io.length(size) && (size >= expected_size)) // standard format has 860160 bytes
return;
track_count = head_count = sector_count = 0;
}
-int ds9_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int ds9_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
uint8_t track_count, head_count, sector_count;
find_size(io, track_count, head_count, sector_count);
- if (track_count) return 50;
+ if (track_count)
+ return 50;
return 0;
}
-bool ds9_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool ds9_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
{
uint8_t track_count, head_count, sector_count;
find_size(io, track_count, head_count, sector_count);
@@ -143,7 +142,8 @@ bool ds9_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
{
for (int head = 0; head < head_count; head++)
{
- io_generic_read(io, sectdata, (track * head_count + head) * track_size, track_size);
+ size_t actual;
+ io.read_at((track * head_count + head) * track_size, sectdata, track_size, actual);
generate_track(ds9_desc, track, head, sectors, sector_count, 104000, image);
}
}