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chdman: Add extractdvd command

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This commit is contained in:
Olivier Galibert 2023-05-05 16:04:54 +02:00
parent 232c846392
commit d4f0d95e91
1 changed files with 93 additions and 0 deletions
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93
src/tools/chdman.cpp
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@ -75,6 +75,7 @@ const int MODE_GDI = 2;
#define COMMAND_EXTRACT_RAW "extractraw"
#define COMMAND_EXTRACT_HD "extracthd"
#define COMMAND_EXTRACT_CD "extractcd"
#define COMMAND_EXTRACT_DVD "extractdvd"
#define COMMAND_EXTRACT_LD "extractld"
#define COMMAND_COPY "copy"
#define COMMAND_ADD_METADATA "addmeta"
@ -130,6 +131,7 @@ static void do_create_ld(parameters_map &params);
static void do_copy(parameters_map &params);
static void do_extract_raw(parameters_map &params);
static void do_extract_cd(parameters_map &params);
static void do_extract_dvd(parameters_map &params);
static void do_extract_ld(parameters_map &params);
static void do_add_metadata(parameters_map &params);
static void do_del_metadata(parameters_map &params);
@ -762,6 +764,16 @@ static const command_description s_commands[] =
}
},
{ COMMAND_EXTRACT_DVD, do_extract_dvd, ": extract DVD file from a CHD input file",
{
REQUIRED OPTION_OUTPUT,
OPTION_OUTPUT_BIN,
OPTION_OUTPUT_FORCE,
REQUIRED OPTION_INPUT,
OPTION_INPUT_PARENT,
}
},
{ COMMAND_EXTRACT_LD, do_extract_ld, ": extract laserdisc AVI from a CHD input file",
{
REQUIRED OPTION_OUTPUT,
@ -2725,6 +2737,87 @@ static void do_extract_cd(parameters_map &params)
}
//-------------------------------------------------
// do_extract_dvd - extract a DVD image from a
// CHD image, currently identical to extractraw
//-------------------------------------------------
static void do_extract_dvd(parameters_map &params)
{
// parse out input files
chd_file input_parent_chd;
chd_file input_chd;
parse_input_chd_parameters(params, input_chd, input_parent_chd);
// parse out input start/end
uint64_t input_start;
uint64_t input_end;
parse_input_start_end(params, input_chd.logical_bytes(), input_chd.hunk_bytes(), input_chd.hunk_bytes(), input_start, input_end);
// verify output file doesn't exist
auto output_file_str = params.find(OPTION_OUTPUT);
if (output_file_str != params.end())
check_existing_output_file(params, output_file_str->second->c_str());
// print some info
printf("Output File: %s\n", output_file_str->second->c_str());
printf("Input CHD: %s\n", params.find(OPTION_INPUT)->second->c_str());
if (input_start != 0 || input_end != input_chd.logical_bytes())
{
printf("Input start: %s\n", big_int_string(input_start).c_str());
printf("Input length: %s\n", big_int_string(input_end - input_start).c_str());
}
// catch errors so we can close & delete the output file
util::core_file::ptr output_file;
try
{
// process output file
std::error_condition const filerr = util::core_file::open(*output_file_str->second, OPEN_FLAG_WRITE | OPEN_FLAG_CREATE, output_file);
if (filerr)
report_error(1, "Unable to open file (%s): %s", *output_file_str->second, filerr.message());
// copy all data
std::vector<uint8_t> buffer((TEMP_BUFFER_SIZE / input_chd.hunk_bytes()) * input_chd.hunk_bytes());
for (uint64_t offset = input_start; offset < input_end; )
{
progress(false, "Extracting, %.1f%% complete... \r", 100.0 * double(offset - input_start) / double(input_end - input_start));
// determine how much to read
uint32_t bytes_to_read = (std::min<uint64_t>)(buffer.size(), input_end - offset);
std::error_condition err = input_chd.read_bytes(offset, &buffer[0], bytes_to_read);
if (err)
report_error(1, "Error reading CHD file (%s): %s", *params.find(OPTION_INPUT)->second, err.message());
// write to the output
size_t count;
std::error_condition const writerr = output_file->write(&buffer[0], bytes_to_read, count);
if (writerr || (count != bytes_to_read))
report_error(1, "Error writing to file; check disk space (%s)", *output_file_str->second);
// advance
offset += bytes_to_read;
}
// finish up
output_file.reset();
printf("Extraction complete \n");
}
catch (...)
{
// delete the output file
if (output_file != nullptr)
{
output_file.reset();
osd_file::remove(*output_file_str->second);
}
throw;
}
}
//-------------------------------------------------
// do_extract_ld - extract an AVI file from a
// CHD image