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Update mid2agb source

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Credit to @camthesaxman
This commit is contained in:
Diegoisawesome 2018-09-15 15:49:31 -05:00
parent 48586660fd
commit 3028fdc353
3 changed files with 74 additions and 82 deletions
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7
tools/mid2agb/Makefile
View File

@ -1,12 +1,15 @@
CXX := g++
CXXFLAGS := -std=c++11 -O2 -Wall -Wno-switch -Werror
CXXFLAGS := -std=c++11 -O2 -s -Wall -Wno-switch -Werror
SRCS := agb.cpp error.cpp main.cpp midi.cpp tables.cpp
HEADERS := agb.h error.h main.h midi.h tables.h
.PHONY: clean
.PHONY: all clean
all: mid2agb
@:
mid2agb: $(SRCS) $(HEADERS)
$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)

128
tools/mid2agb/main.cpp
View File

@ -50,7 +50,8 @@ bool g_compressionEnabled = true;
" input_file filename(.mid) of MIDI file\n"
" output_file filename(.s) for AGB file (default:input_file)\n"
"\n"
"options -V??? master volume (default:127)\n"
"options -L??? label for assembler (default:output_file)\n"
" -V??? master volume (default:127)\n"
" -G??? voice group number (default:0)\n"
" -P??? priority (default:0)\n"
" -R??? reverb (default:off)\n"
@ -73,18 +74,6 @@ static std::string StripExtension(std::string s)
return s;
}
static std::string StripPathAndExtension(std::string s)
{
std::size_t pos = s.find_last_of("/\\");
if (pos > 0 && pos != std::string::npos)
{
s = s.substr(pos + 1, pos);
}
return StripExtension(s);
}
static std::string GetExtension(std::string s)
{
std::size_t pos = s.find_last_of('.');
@ -97,57 +86,45 @@ static std::string GetExtension(std::string s)
return "";
}
struct Option
static std::string BaseName(std::string s)
{
char letter = 0;
const char *arg = NULL;
};
std::size_t posAfterSlash = s.find_last_of("/\\");
static Option ParseOption(int& index, const int argc, char** argv)
if (posAfterSlash == std::string::npos)
posAfterSlash = 0;
else
posAfterSlash++;
std::size_t dotPos = s.find_first_of('.', posAfterSlash);
if (dotPos > posAfterSlash && dotPos != std::string::npos)
s = s.substr(posAfterSlash, dotPos - posAfterSlash);
return s;
}
static const char *GetArgument(int argc, char **argv, int& index)
{
static std::set<char> optionsWithArg = { 'L', 'V', 'G', 'P', 'R' };
static std::set<char> optionsWithoutArg = { 'X', 'E', 'N' };
assert(index >= 0 && index < argc);
const char *opt = argv[index];
const char *option = argv[index];
assert(opt[0] == '-');
assert(std::strlen(opt) == 2);
assert(option != nullptr);
assert(option[0] == '-');
char letter = std::toupper(opt[1]);
// If there is text following the letter, return that.
if (std::strlen(option) >= 3)
return option + 2;
bool isOption = false;
bool hasArg = false;
if (optionsWithArg.count(letter) != 0)
{
isOption = true;
hasArg = true;
}
else if (optionsWithoutArg.count(letter) != 0)
{
isOption = true;
}
if (!isOption)
PrintUsage();
Option retVal;
retVal.letter = letter;
if (hasArg)
// Otherwise, try to get the next arg.
if (index + 1 < argc)
{
index++;
if (index >= argc)
RaiseError("missing argument for \"-%c\"", letter);
retVal.arg = argv[index];
return argv[index];
}
else
{
return nullptr;
}
return retVal;
}
int main(int argc, char** argv)
@ -157,53 +134,62 @@ int main(int argc, char** argv)
for (int i = 1; i < argc; i++)
{
if (argv[i][0] == '-' && std::strlen(argv[i]) == 2)
{
Option option = ParseOption(i, argc, argv);
const char *option = argv[i];
switch (option.letter)
if (option[0] == '-' && option[1] != '\0')
{
const char *arg = GetArgument(argc, argv, i);
switch (std::toupper(option[1]))
{
case 'E':
g_exactGateTime = true;
break;
case 'G':
g_voiceGroup = std::stoi(option.arg);
if (arg == nullptr)
PrintUsage();
g_voiceGroup = std::stoi(arg);
break;
case 'L':
g_asmLabel = option.arg;
if (arg == nullptr)
PrintUsage();
g_asmLabel = std::stoi(arg);
break;
case 'N':
g_compressionEnabled = false;
break;
case 'P':
g_priority = std::stoi(option.arg);
if (arg == nullptr)
PrintUsage();
g_priority = std::stoi(arg);
break;
case 'R':
g_reverb = std::stoi(option.arg);
if (arg == nullptr)
PrintUsage();
g_reverb = std::stoi(arg);
break;
case 'V':
g_masterVolume = std::stoi(option.arg);
if (arg == nullptr)
PrintUsage();
g_masterVolume = std::stoi(arg);
break;
case 'X':
g_clocksPerBeat = 2;
break;
default:
PrintUsage();
}
}
else
{
switch (i)
{
case 1:
if (inputFilename.empty())
inputFilename = argv[i];
break;
case 2:
else if (outputFilename.empty())
outputFilename = argv[i];
break;
default:
else
PrintUsage();
}
}
}
if (inputFilename.empty())
PrintUsage();
@ -218,7 +204,7 @@ int main(int argc, char** argv)
RaiseError("output filename extension is not \"s\"");
if (g_asmLabel.empty())
g_asmLabel = StripPathAndExtension(outputFilename);
g_asmLabel = BaseName(outputFilename);
g_inputFile = std::fopen(inputFilename.c_str(), "rb");

19
tools/mid2agb/midi.cpp
View File

@ -52,7 +52,7 @@ static std::int32_t s_absoluteTime;
static int s_blockCount = 0;
static int s_minNote;
static int s_maxNote;
static int s_runningStatus = 0;
static int s_runningStatus;
void Seek(long offset)
{
@ -171,6 +171,7 @@ void StartTrack()
{
Seek(s_trackDataStart);
s_absoluteTime = 0;
s_runningStatus = 0;
}
void SkipEventData()
@ -182,20 +183,18 @@ void DetermineEventCategory(MidiEventCategory& category, int& typeChan, int& siz
{
typeChan = ReadInt8();
if (typeChan < 0x80 && s_runningStatus != 0)
if (typeChan < 0x80)
{
// If data byte was found, use the running status.
ungetc(typeChan, g_inputFile);
typeChan = s_runningStatus;
Skip(-1);
}
if (typeChan == 0xFF)
{
category = MidiEventCategory::Meta;
size = 0;
}
else if (typeChan >= 0xF8)
{
category = MidiEventCategory::Invalid;
s_runningStatus = 0;
}
else if (typeChan >= 0xF0)
{
@ -206,7 +205,6 @@ void DetermineEventCategory(MidiEventCategory& category, int& typeChan, int& siz
else if (typeChan >= 0x80)
{
category = MidiEventCategory::Control;
s_runningStatus = typeChan;
switch (typeChan >> 4)
{
@ -218,6 +216,7 @@ void DetermineEventCategory(MidiEventCategory& category, int& typeChan, int& siz
size = 2;
break;
}
s_runningStatus = typeChan;
}
else
{
@ -434,7 +433,10 @@ bool CheckNoteEnd(Event& event)
void FindNoteEnd(Event& event)
{
// Save the current file position and running status
// which get modified by CheckNoteEnd.
long startPos = ftell(g_inputFile);
int savedRunningStatus = s_runningStatus;
event.param2 = 0;
@ -442,6 +444,7 @@ void FindNoteEnd(Event& event)
;
Seek(startPos);
s_runningStatus = savedRunningStatus;
}
bool ReadTrackEvent(Event& event)