summaryrefslogtreecommitdiffstatshomepage
path: root/src/lib/formats/sdf_dsk.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/formats/sdf_dsk.cpp')
-rw-r--r--src/lib/formats/sdf_dsk.cpp52
1 files changed, 26 insertions, 26 deletions
diff --git a/src/lib/formats/sdf_dsk.cpp b/src/lib/formats/sdf_dsk.cpp
index b2cd4a4e7ab..92a6b9fb653 100644
--- a/src/lib/formats/sdf_dsk.cpp
+++ b/src/lib/formats/sdf_dsk.cpp
@@ -2,7 +2,7 @@
// copyright-holders:Wilbert Pol, tim lindner
/*********************************************************************
- formats/sdf_dsk.h
+ formats/sdf_dsk.cpp
SDF disk images. Format created by Darren Atkinson for use with
his CoCoSDC floppy disk emulator.
@@ -12,43 +12,49 @@
*********************************************************************/
#include "sdf_dsk.h"
-#include <assert.h>
+
+#include "ioprocs.h"
+#include "multibyte.h"
+
sdf_format::sdf_format()
{
}
-const char *sdf_format::name() const
+const char *sdf_format::name() const noexcept
{
return "sdf";
}
-const char *sdf_format::description() const
+const char *sdf_format::description() const noexcept
{
return "SDF disk image";
}
-const char *sdf_format::extensions() const
+const char *sdf_format::extensions() const noexcept
{
return "sdf";
}
-int sdf_format::identify(io_generic *io, uint32_t form_factor)
+int sdf_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const
{
uint8_t header[HEADER_SIZE];
- uint64_t size = io_generic_size(io);
-
- if (size < HEADER_SIZE)
+ uint64_t size;
+ if (io.length(size) || (size < HEADER_SIZE))
{
return 0;
}
- io_generic_read(io, header, 0, HEADER_SIZE);
+ auto const [err, actual] = read_at(io, 0, header, HEADER_SIZE);
+ if (err || (HEADER_SIZE != actual))
+ {
+ return 0;
+ }
int tracks = header[4];
int heads = header[5];
@@ -67,31 +73,31 @@ int sdf_format::identify(io_generic *io, uint32_t form_factor)
if (size == HEADER_SIZE + heads * tracks * TOTAL_TRACK_SIZE)
{
- return 100;
+ return FIFID_SIGN|FIFID_SIZE|FIFID_STRUCT;
}
return 0;
}
-bool sdf_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
+bool sdf_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image &image) const
{
uint8_t header[HEADER_SIZE];
std::vector<uint8_t> track_data(TOTAL_TRACK_SIZE);
std::vector<uint32_t> raw_track_data;
- io_generic_read(io, header, 0, HEADER_SIZE);
+ read_at(io, 0, header, HEADER_SIZE); // FIXME: check for errors and premature EOF
const int tracks = header[4];
const int heads = header[5];
if (heads == 2)
{
- image->set_variant(floppy_image::DSDD);
+ image.set_variant(floppy_image::DSDD);
}
else
{
- image->set_variant(floppy_image::SSDD);
+ image.set_variant(floppy_image::SSDD);
}
for (int track = 0; track < tracks; track++)
@@ -104,7 +110,7 @@ bool sdf_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
raw_track_data.clear();
// Read track
- io_generic_read(io, &track_data[0], HEADER_SIZE + ( heads * track + head ) * TOTAL_TRACK_SIZE, TOTAL_TRACK_SIZE);
+ read_at(io, HEADER_SIZE + (heads * track + head) * TOTAL_TRACK_SIZE, &track_data[0], TOTAL_TRACK_SIZE); // FIXME: check for errors and premature EOF
int sector_count = track_data[0];
@@ -115,8 +121,8 @@ bool sdf_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
{
if (i < sector_count )
{
- idam_location[i] = ((track_data[ 8 * (i+1) + 1] << 8 | track_data[ 8 * (i+1)]) & 0x3FFF) - 4;
- dam_location[i] = ((track_data[ 8 * (i+1) + 1 + 2] << 8 | track_data[ 8 * (i+1) + 2]) & 0x3FFF) - 4;
+ idam_location[i] = (get_u16le(&track_data[ 8 * (i+1)]) & 0x3FFF) - 4;
+ dam_location[i] = (get_u16le(&track_data[ 8 * (i+1) + 2]) & 0x3FFF) - 4;
if (idam_location[i] > TOTAL_TRACK_SIZE) return false;
if (dam_location[i] > TOTAL_TRACK_SIZE) return false;
@@ -181,16 +187,10 @@ bool sdf_format::load(io_generic *io, uint32_t form_factor, floppy_image *image)
}
-bool sdf_format::save(io_generic *io, floppy_image *image)
-{
- return false;
-}
-
-
-bool sdf_format::supports_save() const
+bool sdf_format::supports_save() const noexcept
{
return false;
}
-const floppy_format_type FLOPPY_SDF_FORMAT = &floppy_image_format_creator<sdf_format>;
+const sdf_format FLOPPY_SDF_FORMAT;