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-rw-r--r--src/tools/image_handler.cpp397
1 files changed, 397 insertions, 0 deletions
diff --git a/src/tools/image_handler.cpp b/src/tools/image_handler.cpp
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+++ b/src/tools/image_handler.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+
+// Image generic handler class and helpers
+
+#include "image_handler.h"
+
+#include "formats/all.h"
+#include "formats/fsblk_vec.h"
+#include "formats/fs_unformatted.h"
+
+#include "ioprocs.h"
+#include "ioprocsfill.h"
+#include "ioprocsvec.h"
+#include "multibyte.h"
+#include "strformat.h"
+
+#include <algorithm>
+
+
+// Format enumeration
+
+namespace {
+ struct enumerator : public mame_formats_enumerator {
+ formats_table *m_table;
+ std::string m_category;
+
+ enumerator(formats_table *table) : mame_formats_enumerator(), m_table(table), m_category("None") {}
+
+ virtual ~enumerator() = default;
+ virtual void add(const cassette_image::Format *const *formats) {}
+
+ virtual void category(const char *name) {
+ m_category = name;
+ }
+
+ virtual void add(const floppy_image_format_t &format) {
+ m_table->floppy_format_infos.emplace_back(std::make_unique<floppy_format_info>(&format, m_category));
+ }
+
+ virtual void add(const fs::manager_t &fs) {
+ m_table->filesystem_formats.emplace_back(std::make_unique<filesystem_format>(&fs, m_category));
+ }
+ };
+
+ struct fs_enum : public fs::manager_t::floppy_enumerator {
+ filesystem_format *m_format;
+ fs_enum(filesystem_format *format, u32 form_factor, const std::vector<u32> &variants) : fs::manager_t::floppy_enumerator(form_factor, variants), m_format(format) {}
+
+ virtual void add_format(const floppy_image_format_t &type, u32 image_size, const char *name, const char *description) override {
+ m_format->m_floppy = true;
+ m_format->m_floppy_create.emplace_back(std::make_unique<floppy_create_info>(m_format->m_manager, &type, image_size, name, description));
+ }
+
+ virtual void add_raw(const char *name, u32 key, const char *description) override {
+ m_format->m_floppy_raw = true;
+ m_format->m_floppy_create.emplace_back(std::make_unique<floppy_create_info>(name, key, description));
+ }
+ };
+}
+
+void formats_table::init()
+{
+ std::vector<uint32_t> variants;
+
+ enumerator en(this);
+ mame_formats_full_list(en);
+
+ for(auto &f : filesystem_formats) {
+ fs_enum fen(f.get(), floppy_image::FF_UNKNOWN, variants);
+ f->m_manager->enumerate_f(fen);
+ }
+
+ for(auto &f : floppy_format_infos) {
+ auto *ff = f.get();
+ std::string key = ff->m_format->name();
+ auto i = floppy_format_info_by_key.find(key);
+ if(i != floppy_format_info_by_key.end()) {
+ fprintf(stderr, "Collision on floppy format name %s between \"%s\" and \"%s\".\n",
+ ff->m_format->name(),
+ ff->m_format->description(),
+ i->second->m_format->description());
+ exit(1);
+ }
+
+ floppy_format_info_by_key[key] = ff;
+ floppy_format_info_by_category[ff->m_category].push_back(ff);
+ }
+
+ for(auto &f : filesystem_formats) {
+ auto *ff = f.get();
+ std::string key = ff->m_manager->name();
+ auto i = filesystem_format_by_key.find(key);
+ if(i != filesystem_format_by_key.end()) {
+ fprintf(stderr, "Collision on filesystem name %s between \"%s\" and \"%s\".\n",
+ ff->m_manager->name(),
+ ff->m_manager->description(),
+ i->second->m_manager->description());
+ exit(1);
+ }
+
+ filesystem_format_by_key[key] = ff;
+ filesystem_format_by_category[ff->m_category].push_back(ff);
+
+ for(auto &f2 : ff->m_floppy_create) {
+ auto *ff2 = f2.get();
+ key = ff2->m_name;
+ auto i = floppy_create_info_by_key.find(key);
+ if(i != floppy_create_info_by_key.end()) {
+ fprintf(stderr, "Collision on floppy create name %s between \"%s\" and \"%s\".\n",
+ ff2->m_name,
+ ff2->m_description,
+ i->second->m_description);
+ exit(1);
+ }
+
+ floppy_create_info_by_key[key] = ff2;
+ }
+ }
+}
+
+const floppy_format_info *formats_table::find_floppy_format_info_by_key(const std::string &key) const
+{
+ auto i = floppy_format_info_by_key.find(key);
+ return i == floppy_format_info_by_key.end() ? nullptr : i->second;
+}
+
+const filesystem_format *formats_table::find_filesystem_format_by_key(const std::string &key) const
+{
+ auto i = filesystem_format_by_key.find(key);
+ return i == filesystem_format_by_key.end() ? nullptr : i->second;
+}
+
+const floppy_create_info *formats_table::find_floppy_create_info_by_key(const std::string &key) const
+{
+ auto i = floppy_create_info_by_key.find(key);
+ return i == floppy_create_info_by_key.end() ? nullptr : i->second;
+}
+
+
+// Image handling
+
+std::vector<u8> image_handler::fload(std::string path)
+{
+ auto fi = fopen(path.c_str(), "rb");
+ if(!fi) {
+ perror(util::string_format("Error opening %s for reading", path).c_str());
+ exit(1);
+ }
+ fseek(fi, 0, SEEK_END);
+ long size = ftell(fi);
+ std::vector<u8> filedata(size);
+ fseek(fi, 0, SEEK_SET);
+ fread(filedata.data(), filedata.size(), 1, fi);
+ fclose(fi);
+
+ return filedata;
+}
+
+std::vector<u8> image_handler::fload_rsrc(std::string path)
+{
+ auto filedata = fload(path);
+ const u8 *head = filedata.data();
+
+ if(get_u32be(head+0x00) == 0x00051607 &&
+ get_u32be(head+0x04) == 0x00020000) {
+ u16 nent = get_u16be(head+0x18);
+ for(u16 i=0; i != nent; i++) {
+ const u8 *e = head + 12*i;
+ if(get_u32be(e+0) == 2) {
+ u32 start = get_u32be(e+4);
+ u32 len = get_u32be(e+8);
+ filedata.erase(filedata.begin(), filedata.begin() + start);
+ filedata.erase(filedata.begin() + len, filedata.end());
+ return filedata;
+ }
+ }
+ }
+ filedata.clear();
+ return filedata;
+}
+
+void image_handler::fsave(std::string path, const std::vector<u8> &data)
+{
+ auto fo = fopen(path.c_str(), "wb");
+ if(!fo) {
+ perror(util::string_format("Error opening %s for writing", path).c_str());
+ exit(1);
+ }
+
+ fwrite(data.data(), data.size(), 1, fo);
+ fclose(fo);
+}
+
+void image_handler::fsave_rsrc(std::string path, const std::vector<u8> &data)
+{
+ u8 head[0x2a];
+
+ put_u32be(head+0x00, 0x00051607); // Magic
+ put_u32be(head+0x04, 0x00020000); // Version
+ memset(head+0x08, 0, 16); // Filler
+ put_u16be(head+0x18, 1); // Number of entries
+ put_u32be(head+0x1a, 2); // Resource fork
+ put_u32be(head+0x22, 0x2a); // Offset in the file
+ put_u32be(head+0x26, data.size()); // Length
+
+ auto fo = fopen(path.c_str(), "wb");
+ if(!fo) {
+ perror(util::string_format("Error opening %s for writing", path).c_str());
+ exit(1);
+ }
+
+ fwrite(head, sizeof(head), 1, fo);
+ fwrite(data.data(), data.size(), 1, fo);
+ fclose(fo);
+}
+
+image_handler::image_handler() : m_floppy_image(84, 2, floppy_image::FF_UNKNOWN)
+{
+}
+
+void image_handler::set_on_disk_path(std::string path)
+{
+ m_on_disk_path = path;
+}
+
+std::vector<std::pair<u8, const floppy_format_info *>> image_handler::identify(const formats_table &formats)
+{
+ std::vector<std::pair<u8, const floppy_format_info *>> res;
+ std::vector<uint32_t> variants;
+
+ FILE *f = fopen(m_on_disk_path.c_str(), "rb");
+ if (!f) {
+ std::string msg = util::string_format("Error opening %s for reading", m_on_disk_path);
+ perror(msg.c_str());
+ return res;
+ }
+
+ auto io = util::stdio_read(f, 0xff);
+
+ for(const auto &e : formats.floppy_format_info_by_key) {
+ u8 score = e.second->m_format->identify(*io, floppy_image::FF_UNKNOWN, variants);
+ if(score && e.second->m_format->extension_matches(m_on_disk_path.c_str()))
+ score |= floppy_image_format_t::FIFID_EXT;
+ if(score)
+ res.emplace_back(std::make_pair(score, e.second));
+ }
+
+ // Sort results by decreasing score
+ std::stable_sort(res.begin(), res.end(), [](const auto &a, const auto &b) { return a.first > b.first; });
+
+ return res;
+}
+
+bool image_handler::floppy_load(const floppy_format_info &format)
+{
+ std::vector<uint32_t> variants;
+ FILE *f = fopen(m_on_disk_path.c_str(), "rb");
+ if (!f) {
+ std::string msg = util::string_format("Error opening %s for reading", m_on_disk_path);
+ perror(msg.c_str());
+ return true;
+ }
+
+ auto io = util::stdio_read(f, 0xff);
+
+ return !format.m_format->load(*io, floppy_image::FF_UNKNOWN, variants, m_floppy_image);
+}
+
+bool image_handler::floppy_save(const floppy_format_info &format) const
+{
+ std::vector<uint32_t> variants;
+ FILE *f = fopen(m_on_disk_path.c_str(), "wb");
+ if (!f) {
+ auto msg = util::string_format("Error opening %s for writing", m_on_disk_path);
+ perror(msg.c_str());
+ return true;
+ }
+
+ auto io = util::stdio_read_write(f, 0xff);
+
+ return !format.m_format->save(*io, variants, m_floppy_image);
+}
+
+void image_handler::floppy_create(const floppy_create_info &format, fs::meta_data meta)
+{
+ if(format.m_type) {
+ std::vector<uint32_t> variants;
+ std::vector<u8> img(format.m_image_size);
+ fs::fsblk_vec_t blockdev(img);
+ auto fs = format.m_manager->mount(blockdev);
+ fs->format(meta);
+
+ auto io = util::ram_read(img.data(), img.size(), 0xff);
+ format.m_type->load(*io, floppy_image::FF_UNKNOWN, variants, m_floppy_image);
+ } else {
+ fs::unformatted_image::format(format.m_key, &m_floppy_image);
+ }
+}
+
+bool image_handler::floppy_mount_fs(const filesystem_format &format)
+{
+ // Create a restricted copy of the format list based on the known form factor and variant
+ filesystem_format fmtcopy(format.m_manager, format.m_category);
+ std::vector<u32> const var(1, m_floppy_image.get_variant());
+ fs_enum fen(&fmtcopy, m_floppy_image.get_form_factor(), var);
+ format.m_manager->enumerate_f(fen);
+
+ m_floppy_fs_converter = nullptr;
+ for(const auto &ci : fmtcopy.m_floppy_create) {
+ if(ci->m_type != m_floppy_fs_converter) {
+ std::vector<uint32_t> variants;
+ m_floppy_fs_converter = ci->m_type;
+ m_sector_image.clear();
+ util::random_read_write_fill_wrapper<util::vector_read_write_adapter<u8>, 0xff> io(m_sector_image);
+ m_floppy_fs_converter->save(io, variants, m_floppy_image);
+ }
+
+ if(ci->m_image_size == m_sector_image.size())
+ goto success;
+ }
+ m_floppy_fs_converter = nullptr;
+ m_sector_image.clear();
+ return true;
+
+ success:
+ m_fsblk.reset(new fs::fsblk_vec_t(m_sector_image));
+ m_fsm = format.m_manager;
+ m_fs = m_fsm->mount(*m_fsblk);
+ return false;
+}
+
+bool image_handler::hd_mount_fs(const filesystem_format &format)
+{
+ // Should use the chd mechanisms, one thing at a time...
+
+ m_sector_image = fload(m_on_disk_path);
+ m_fsblk.reset(new fs::fsblk_vec_t(m_sector_image));
+ m_fsm = format.m_manager;
+ m_fs = m_fsm->mount(*m_fsblk);
+ return false;
+}
+
+void image_handler::fs_to_floppy()
+{
+ std::vector<uint32_t> variants;
+ auto io = util::ram_read(m_sector_image.data(), m_sector_image.size(), 0xff);
+ m_floppy_fs_converter->load(*io, floppy_image::FF_UNKNOWN, variants, m_floppy_image);
+}
+
+std::vector<std::string> image_handler::path_split(std::string path) const
+{
+ std::string opath = path;
+ std::vector<std::string> rpath;
+ if(m_fsm->has_subdirectories()) {
+ std::string element;
+ char sep = m_fsm->directory_separator();
+ for(char c : opath) {
+ if(c == sep) {
+ if(!element.empty()) {
+ rpath.push_back(element);
+ element.clear();
+ }
+ } else
+ element += c;
+ }
+ if(!element.empty())
+ rpath.push_back(element);
+
+ } else
+ rpath.push_back(opath);
+
+ return rpath;
+}
+
+bool image_handler::fexists(std::string path)
+{
+ auto f = fopen(path.c_str(), "rb");
+ if(f != nullptr) {
+ fclose(f);
+ return true;
+ }
+ return false;
+}
+
+
+std::string image_handler::path_make_rsrc(std::string path)
+{
+ auto p = path.end();
+ while(p != path.begin() && p[-1] != '/')
+ p--;
+ std::string rpath(path.begin(), p);
+ rpath += "._";
+ rpath += std::string(p, path.end());
+ return rpath;
+}
+