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path: root/src/lib/formats/svi_dsk.cpp
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Diffstat (limited to 'src/lib/formats/svi_dsk.cpp')
-rw-r--r--src/lib/formats/svi_dsk.cpp37
1 files changed, 23 insertions, 14 deletions
diff --git a/src/lib/formats/svi_dsk.cpp b/src/lib/formats/svi_dsk.cpp
index e3cfa294fcb..0a05bd15c80 100644
--- a/src/lib/formats/svi_dsk.cpp
+++ b/src/lib/formats/svi_dsk.cpp
@@ -10,6 +10,9 @@
#include "svi_dsk.h"
+#include "ioprocs.h"
+
+
svi_format::svi_format()
{
}
@@ -29,9 +32,11 @@ const char *svi_format::extensions() const
return "dsk";
}
-int svi_format::identify(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants)
+int svi_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants)
{
- uint64_t size = io_generic_size(io);
+ uint64_t size;
+ if (io.length(size))
+ return 0;
if (size == 172032 || size == 346112)
return 50;
@@ -39,11 +44,13 @@ int svi_format::identify(io_generic *io, uint32_t form_factor, const std::vector
return 0;
}
-bool svi_format::load(io_generic *io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
+bool svi_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image)
{
- uint64_t size = io_generic_size(io);
- int head_count;
+ uint64_t size;
+ if (io.length(size))
+ return false;
+ int head_count;
switch (size)
{
case 172032: head_count = 1; break;
@@ -51,7 +58,8 @@ bool svi_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
default: return false;
}
- int file_offset = 0;
+ if (io.seek(0, SEEK_SET))
+ return false;
for (int track = 0; track < 40; track++)
{
@@ -75,10 +83,10 @@ bool svi_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
sectors[i].bad_crc = false;
sectors[i].data = &sector_data[sector_offset];
- io_generic_read(io, sectors[i].data, file_offset, sector_size);
+ size_t actual;
+ io.read(sectors[i].data, sector_size, actual);
sector_offset += sector_size;
- file_offset += sector_size;
}
if (track == 0 && head == 0)
@@ -91,9 +99,10 @@ bool svi_format::load(io_generic *io, uint32_t form_factor, const std::vector<ui
return true;
}
-bool svi_format::save(io_generic *io, const std::vector<uint32_t> &variants, floppy_image *image)
+bool svi_format::save(util::random_read_write &io, const std::vector<uint32_t> &variants, floppy_image *image)
{
- uint64_t file_offset = 0;
+ if (io.seek(0, SEEK_SET))
+ return false;
int track_count, head_count;
image->get_actual_geometry(track_count, head_count);
@@ -104,8 +113,8 @@ bool svi_format::save(io_generic *io, const std::vector<uint32_t> &variants, flo
for (int i = 0; i < 18; i++)
{
- io_generic_write(io, sectors[i + 1].data(), file_offset, 128);
- file_offset += 128;
+ size_t actual;
+ io.write(sectors[i + 1].data(), 128, actual);
}
// rest are mfm tracks
@@ -121,8 +130,8 @@ bool svi_format::save(io_generic *io, const std::vector<uint32_t> &variants, flo
for (int i = 0; i < 17; i++)
{
- io_generic_write(io, sectors[i + 1].data(), file_offset, 256);
- file_offset += 256;
+ size_t actual;
+ io.write(sectors[i + 1].data(), 256, actual);
}
}
}