mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-11-15 16:51:31 +00:00
Fixed: writeopl broke when the OPL3 cores were added
- When the OPL3 cores were added, DiskWriterIO was never updated to take into account things like more than two OPL2 chips can be configured. - DiskWriterIO no longer does any file writing directly. That function has been split off into an OPLDump class, which has two specializations: one for RDOS Play, and the other for DOSBox. If one chip is configured, it dumps for a single OPL2, otherwise it dumps for an OPL3 (effectively dual OPL2). - TODO: Figure out why playback of raw OPL files doesn't sound nearly as good as playing MIDI with the OPL emulation. It's probably something simple I overlooked.
This commit is contained in:
Randy Heit
parent
f983f778f2
commit
b3c7b9679a
2 changed files with 212 additions and 212 deletions
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@ -45,6 +45,35 @@
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// TYPES -------------------------------------------------------------------
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class OPLDump : public OPLEmul
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{
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public:
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OPLDump(FILE *file) : File(file), TimePerTick(0), CurTime(0),
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CurIntTime(0), TickMul(1), CurChip(0) {}
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// If we're doing things right, these should never be reset.
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virtual void Reset() { assert(0); }
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// Update() is only used for getting waveform data, which dumps don't do.
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virtual void Update(float *buffer, int length) { assert(0); }
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// OPL dumps don't pan beyond what OPL3 is capable of (which is
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// already written using registers from the original data).
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virtual void SetPanning(int c, float left, float right) {}
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// Only for the OPL dumpers, not the emulators
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virtual void SetClockRate(double samples_per_tick) {}
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virtual void WriteDelay(int ticks) = 0;
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protected:
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FILE *File;
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double TimePerTick; // in milliseconds
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double CurTime;
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int CurIntTime;
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int TickMul;
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BYTE CurChip;
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};
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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@ -59,6 +88,173 @@
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// CODE --------------------------------------------------------------------
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class OPL_RDOSdump : public OPLDump
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{
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public:
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OPL_RDOSdump(FILE *file) : OPLDump(file)
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{
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assert(File != NULL);
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fwrite("RAWADATA\0", 1, 10, File);
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NeedClockRate = true;
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}
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virtual ~OPL_RDOSdump()
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{
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if (File != NULL)
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{
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WORD endmark = 0xFFFF;
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fwrite(&endmark, 2, 1, File);
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fclose(File);
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}
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}
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virtual void WriteReg(int reg, int v)
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{
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assert(File != NULL);
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BYTE chipnum = reg >> 8;
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if (chipnum != CurChip)
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{
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BYTE switcher[2] = { chipnum + 1, 2 };
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fwrite(switcher, 1, 2, File);
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}
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reg &= 255;
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if (reg != 0 && reg != 2 && (reg != 255 || v != 255))
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{
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BYTE cmd[2] = { BYTE(v), BYTE(reg) };
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fwrite(cmd, 1, 2, File);
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}
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}
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virtual void SetClockRate(double samples_per_tick)
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{
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TimePerTick = samples_per_tick / OPL_SAMPLE_RATE * 1000.0;
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double clock_rate;
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int clock_mul;
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WORD clock_word;
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clock_rate = samples_per_tick * ADLIB_CLOCK_MUL;
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clock_mul = 1;
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// The RDos raw format's clock rate is stored in a word. Therefore,
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// the longest tick that can be stored is only ~55 ms.
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while (clock_rate / clock_mul + 0.5 > 65535.0)
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{
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clock_mul++;
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}
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clock_word = WORD(clock_rate / clock_mul + 0.5);
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if (NeedClockRate)
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{ // Set the initial clock rate.
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clock_word = LittleShort(clock_word);
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fseek(File, 8, SEEK_SET);
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fwrite(&clock_word, 2, 1, File);
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fseek(File, 0, SEEK_END);
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NeedClockRate = false;
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}
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else
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{ // Change the clock rate in the middle of the song.
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BYTE clock_change[4] = { 0, 2, BYTE(clock_word & 255), BYTE(clock_word >> 8) };
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fwrite(clock_change, 1, 4, File);
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}
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}
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virtual void WriteDelay(int ticks)
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{
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if (ticks > 0)
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{ // RDos raw has very precise delays but isn't very efficient at
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// storing long delays.
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BYTE delay[2];
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ticks *= TickMul;
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delay[1] = 0;
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while (ticks > 255)
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{
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ticks -= 255;
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delay[0] = 255;
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fwrite(delay, 1, 2, File);
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}
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delay[0] = BYTE(ticks);
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fwrite(delay, 1, 2, File);
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}
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}
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protected:
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bool NeedClockRate;
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};
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class OPL_DOSBOXdump : public OPLDump
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{
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public:
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OPL_DOSBOXdump(FILE *file, bool dual) : OPLDump(file), Dual(dual)
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{
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assert(File != NULL);
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fwrite("DBRAWOPL"
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"\0\0" // Minor version number
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"\1\0" // Major version number
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"\0\0\0\0" // Total milliseconds
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"\0\0\0", // Total data
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1, 20, File);
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char type[4] = { Dual * 2, 0, 0, 0 }; // Single or dual OPL-2
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fwrite(type, 1, 4, File);
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}
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virtual ~OPL_DOSBOXdump()
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{
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if (File != NULL)
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{
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long where_am_i = ftell(File);
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DWORD len[2];
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fseek(File, 12, SEEK_SET);
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len[0] = LittleLong(CurIntTime);
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len[1] = LittleLong(DWORD(where_am_i - 24));
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fwrite(len, 4, 2, File);
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fclose(File);
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}
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}
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virtual void WriteReg(int reg, int v)
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{
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assert(File != NULL);
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BYTE chipnum = reg >> 8;
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if (chipnum != CurChip)
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{
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CurChip = chipnum;
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fputc(chipnum + 2, File);
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}
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reg &= 255;
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BYTE cmd[3] = { 4, BYTE(reg), BYTE(v) };
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fwrite (cmd + (reg > 4), 1, 3 - (reg > 4), File);
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}
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virtual void WriteDelay(int ticks)
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{
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if (ticks > 0)
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{ // DosBox only has millisecond-precise delays.
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int delay;
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CurTime += TimePerTick * ticks;
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delay = int(CurTime + 0.5) - CurIntTime;
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CurIntTime += delay;
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while (delay > 65536)
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{
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BYTE cmd[3] = { 1, 255, 255 };
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fwrite(cmd, 1, 2, File);
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delay -= 65536;
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}
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delay--;
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if (delay <= 255)
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{
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BYTE cmd[2] = { 0, BYTE(delay) };
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fwrite(cmd, 1, 2, File);
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}
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else
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{
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assert(delay <= 65535);
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BYTE cmd[3] = { 1, BYTE(delay & 255), BYTE(delay >> 8) };
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fwrite(cmd, 1, 3, File);
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}
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}
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}
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protected:
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bool Dual;
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};
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//==========================================================================
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//
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// OPLDumperMIDIDevice Constructor
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@ -139,139 +335,34 @@ DiskWriterIO::~DiskWriterIO()
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//
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//==========================================================================
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int DiskWriterIO::OPLinit(uint numchips, bool, bool)
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int DiskWriterIO::OPLinit(uint numchips, bool, bool initopl3)
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{
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// If the file extension is unknown or not present, the default format
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// is RAW. Otherwise, you can use DRO.
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if (Filename.Len() < 5 || stricmp(&Filename[Filename.Len() - 4], ".dro") != 0)
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{
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Format = FMT_RDOS;
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}
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else
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{
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Format = FMT_DOSBOX;
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}
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File = fopen(Filename, "wb");
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if (File == NULL)
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FILE *file = fopen(Filename, "wb");
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if (file == NULL)
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{
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Printf("Could not open %s for writing.\n", Filename.GetChars());
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return 0;
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}
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if (Format == FMT_RDOS)
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numchips = clamp(numchips, 1u, 2u);
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memset(chips, 0, sizeof(chips));
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// If the file extension is unknown or not present, the default format
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// is RAW. Otherwise, you can use DRO.
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if (Filename.Len() < 5 || stricmp(&Filename[Filename.Len() - 4], ".dro") != 0)
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{
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fwrite("RAWADATA\0", 1, 10, File);
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NeedClockRate = true;
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chips[0] = new OPL_RDOSdump(file);
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}
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else
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{
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fwrite("DBRAWOPL"
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"\0\0" // Minor version number
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"\1\0" // Major version number
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"\0\0\0\0" // Total milliseconds
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"\0\0\0", // Total data
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1, 20, File);
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if (numchips == 1)
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{
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fwrite("\0\0\0", 1, 4, File); // Single OPL-2
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}
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else
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{
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fwrite("\2\0\0", 1, 4, File); // Dual OPL-2
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}
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NeedClockRate = false;
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chips[0] = new OPL_DOSBOXdump(file, numchips > 1);
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}
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TimePerTick = 0;
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TickMul = 1;
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CurTime = 0;
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CurIntTime = 0;
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CurChip = 0;
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OPLchannels = OPL2CHANNELS * numchips;
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OPLwriteInitState(false);
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NumChips = numchips;
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IsOPL3 = numchips > 1;
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OPLwriteInitState(initopl3);
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return numchips;
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}
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//==========================================================================
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//
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// DiskWriterIO :: OPLdeinit
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//
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//==========================================================================
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void DiskWriterIO::OPLdeinit()
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{
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if (File != NULL)
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{
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if (Format == FMT_RDOS)
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{
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WORD endmark = 65535;
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fwrite(&endmark, 2, 1, File);
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}
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else
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{
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long where_am_i = ftell(File);
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DWORD len[2];
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fseek(File, 12, SEEK_SET);
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len[0] = LittleLong(CurIntTime);
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len[1] = LittleLong(DWORD(where_am_i - 24));
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fwrite(len, 4, 2, File);
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}
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fclose(File);
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File = NULL;
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}
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}
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//==========================================================================
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//
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// DiskWriterIO :: OPLwriteReg
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//
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//==========================================================================
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void DiskWriterIO::OPLwriteReg(int which, uint reg, uchar data)
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{
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SetChip(which);
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if (Format == FMT_RDOS)
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{
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if (reg != 0 && reg != 2 && (reg != 255 || data != 255))
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{
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BYTE cmd[2] = { data, BYTE(reg) };
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fwrite(cmd, 1, 2, File);
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}
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}
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else
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{
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BYTE cmd[3] = { 4, BYTE(reg), data };
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fwrite (cmd + (reg > 4), 1, 3 - (reg > 4), File);
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}
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}
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//==========================================================================
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//
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// DiskWriterIO :: SetChip
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//
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//==========================================================================
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void DiskWriterIO :: SetChip(int chipnum)
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{
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assert(chipnum == 0 || chipnum == 1);
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if (chipnum != CurChip)
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{
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CurChip = chipnum;
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if (Format == FMT_RDOS)
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{
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BYTE switcher[2] = { BYTE(chipnum + 1), 2 };
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fwrite(switcher, 1, 2, File);
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}
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else
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{
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BYTE switcher = chipnum + 2;
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fwrite(&switcher, 1, 1, File);
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}
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}
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}
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//==========================================================================
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//
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// DiskWriterIO :: SetClockRate
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@ -280,39 +371,7 @@ void DiskWriterIO :: SetChip(int chipnum)
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void DiskWriterIO::SetClockRate(double samples_per_tick)
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{
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TimePerTick = samples_per_tick / OPL_SAMPLE_RATE * 1000.0;
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if (Format == FMT_RDOS)
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{
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double clock_rate;
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int clock_mul;
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WORD clock_word;
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clock_rate = samples_per_tick * ADLIB_CLOCK_MUL;
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clock_mul = 1;
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// The RDos raw format's clock rate is stored in a word. Therefore,
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// the longest tick that can be stored is only ~55 ms.
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while (clock_rate / clock_mul + 0.5 > 65535.0)
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{
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clock_mul++;
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}
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clock_word = WORD(clock_rate / clock_mul + 0.5);
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if (NeedClockRate)
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{ // Set the initial clock rate.
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clock_word = LittleShort(clock_word);
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fseek(File, 8, SEEK_SET);
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fwrite(&clock_word, 2, 1, File);
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fseek(File, 0, SEEK_END);
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NeedClockRate = false;
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}
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else
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{ // Change the clock rate in the middle of the song.
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BYTE clock_change[4] = { 0, 2, BYTE(clock_word & 255), BYTE(clock_word >> 8) };
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fwrite(clock_change, 1, 4, File);
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}
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}
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static_cast<OPLDump *>(chips[0])->SetClockRate(samples_per_tick);
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}
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//==========================================================================
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@ -323,50 +382,5 @@ void DiskWriterIO::SetClockRate(double samples_per_tick)
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void DiskWriterIO :: WriteDelay(int ticks)
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{
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if (ticks <= 0)
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{
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return;
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}
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if (Format == FMT_RDOS)
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{ // RDos raw has very precise delays but isn't very efficient at
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// storing long delays.
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BYTE delay[2];
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ticks *= TickMul;
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delay[1] = 0;
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while (ticks > 255)
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{
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ticks -= 255;
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delay[0] = 255;
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fwrite(delay, 1, 2, File);
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}
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delay[0] = BYTE(ticks);
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fwrite(delay, 1, 2, File);
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}
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else
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{ // DosBox only has millisecond-precise delays.
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int delay;
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CurTime += TimePerTick * ticks;
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delay = int(CurTime + 0.5) - CurIntTime;
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CurIntTime += delay;
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while (delay > 65536)
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{
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BYTE cmd[3] = { 1, 255, 255 };
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fwrite(cmd, 1, 2, File);
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delay -= 65536;
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}
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delay--;
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if (delay <= 255)
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{
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BYTE cmd[2] = { 0, BYTE(delay) };
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fwrite(cmd, 1, 2, File);
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}
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else
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{
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assert(delay <= 65535);
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BYTE cmd[3] = { 1, BYTE(delay & 255), BYTE(delay >> 8) };
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fwrite(cmd, 1, 3, File);
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}
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}
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static_cast<OPLDump *>(chips[0])->WriteDelay(ticks);
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}
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@ -195,25 +195,11 @@ struct DiskWriterIO : public OPLio
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DiskWriterIO(const char *filename);
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~DiskWriterIO();
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int OPLinit(uint numchips, bool notused=false, bool notused2=false);
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void OPLdeinit();
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void OPLwriteReg(int which, uint reg, uchar data);
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int OPLinit(uint numchips, bool notused, bool initopl3);
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void SetClockRate(double samples_per_tick);
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void WriteDelay(int ticks);
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void SetChip(int chipnum);
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FILE *File;
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FString Filename;
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int Format;
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bool NeedClockRate;
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double TimePerTick; // In milliseconds
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double CurTime;
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int CurIntTime;
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int TickMul;
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int CurChip;
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enum { FMT_RDOS, FMT_DOSBOX };
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};
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struct musicBlock {
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