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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/concept_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/concept_dsk.cpp')
-rw-r--r--src/lib/formats/concept_dsk.cpp49
1 files changed, 25 insertions, 24 deletions
diff --git a/src/lib/formats/concept_dsk.cpp b/src/lib/formats/concept_dsk.cpp
index 67c8562e1c3..7f5edce3363 100644
--- a/src/lib/formats/concept_dsk.cpp
+++ b/src/lib/formats/concept_dsk.cpp
@@ -10,11 +10,11 @@
*********************************************************************/
-#include <cassert>
-
-#include "flopimg.h"
#include "formats/concept_dsk.h"
+#include "ioprocs.h"
+
+
/* 9 sectors / track, 512 bytes per sector */
const floppy_image_format_t::desc_e cc525dsdd_format::cc_9_desc[] = {
{ MFM, 0x4e, 80 },
@@ -72,50 +72,50 @@ bool cc525dsdd_format::supports_save() const
return true;
}
-void cc525dsdd_format::find_size(io_generic *io, uint8_t &track_count, uint8_t &head_count, uint8_t &sector_count)
+void cc525dsdd_format::find_size(util::random_read &io, uint8_t &track_count, uint8_t &head_count, uint8_t &sector_count)
{
- uint64_t size = io_generic_size(io);
-
track_count = 77;
head_count = 2;
sector_count = 9;
- uint32_t expected_size = 512 * track_count*head_count*sector_count;
- if (size == expected_size)
- {
+ uint32_t const expected_size = 512 * track_count*head_count*sector_count;
+
+ uint64_t size;
+ if (!io.length(size) && (size == expected_size))
return;
- }
track_count = head_count = sector_count = 0;
}
-int cc525dsdd_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int cc525dsdd_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)
+ if (track_count)
return 50;
+
return 0;
}
-bool cc525dsdd_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool cc525dsdd_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);
uint8_t sectdata[10*512];
desc_s sectors[10];
- for(int i=0; i<sector_count; i++) {
+ for (int i=0; i<sector_count; i++) {
sectors[i+1].data = sectdata + 512*i;
sectors[i+1].size = 512;
sectors[i+1].sector_id = i+1;
}
int track_size = sector_count*512;
- for(int track=0; track < track_count; track++) {
- for(int head=0; head < head_count; head++) {
- io_generic_read(io, sectdata, (track*head_count + head)*track_size, track_size);
+ for (int track=0; track < track_count; track++) {
+ for (int head=0; head < head_count; head++) {
+ size_t actual;
+ io.read_at((track*head_count + head) * track_size, sectdata, track_size, actual);
generate_track(cc_9_desc, track, head, sectors, sector_count, 100000, image);
}
}
@@ -125,28 +125,29 @@ bool cc525dsdd_format::load(io_generic *io, uint32_t form_factor, const std::vec
return true;
}
-bool cc525dsdd_format::save(io_generic *io, const std::vector<uint32_t> &variants, floppy_image *image)
+bool cc525dsdd_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image)
{
int track_count, head_count, sector_count;
get_geometry_mfm_pc(image, 2000, track_count, head_count, sector_count);
- if(track_count != 77)
+ if (track_count != 77)
track_count = 77;
// Happens for a fully unformatted floppy
- if(!head_count)
+ if (!head_count)
head_count = 2;
- if(sector_count != 9)
+ if (sector_count != 9)
sector_count = 9;
uint8_t sectdata[9*512];
int track_size = sector_count*512;
- for(int track=0; track < track_count; track++) {
- for(int head=0; head < head_count; head++) {
+ for (int track=0; track < track_count; track++) {
+ for (int head=0; head < head_count; head++) {
get_track_data_mfm_pc(track, head, image, 2000, 512, sector_count, sectdata);
- io_generic_write(io, sectdata, (track*head_count + head)*track_size, track_size);
+ size_t actual;
+ io.write_at((track*head_count + head)*track_size, sectdata, track_size, actual);
}
}