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| author | Jamieson Christian | 2003-07-11 07:14:21 +0000 |
|---|---|---|
| committer | Jamieson Christian | 2003-07-11 07:14:21 +0000 |
| commit | 8b8b964aadcf0f37cfb853c83857da7271af5ebc (patch) | |
| tree | 0084198c30998e89b2331a8b678cc42a21dbfa72 /backends/midi | |
| parent | 39b37df37a7fed6f5dd62d11fb10e4b8276f05c1 (diff) | |
| download | scummvm-rg350-8b8b964aadcf0f37cfb853c83857da7271af5ebc.tar.gz scummvm-rg350-8b8b964aadcf0f37cfb853c83857da7271af5ebc.tar.bz2 scummvm-rg350-8b8b964aadcf0f37cfb853c83857da7271af5ebc.zip | |
Reverted to "old" YM3812 (FMOPL) emulator code.
Until specific information regarding the benefits
of migrating to the new emulator can be made
available, the "old" code will remain in effect
for the benefit of slower hardware platforms such
as some WinCE-based devices.
svn-id: r8903
Diffstat (limited to 'backends/midi')
| -rw-r--r-- | backends/midi/adlib.cpp | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/backends/midi/adlib.cpp b/backends/midi/adlib.cpp index 734f4632a6..434e6f1f69 100644 --- a/backends/midi/adlib.cpp +++ b/backends/midi/adlib.cpp @@ -577,6 +577,7 @@ private: bool _isOpen; bool _game_SmallHeader; + FM_OPL *_opl; byte *_adlib_reg_cache; SoundMixer *_mixer; @@ -848,8 +849,12 @@ int MidiDriver_ADLIB::open() { _adlib_reg_cache = (byte *)calloc(256, 1); // We need to emulate one YM3812 chip - if (0 != YM3812Init(1, 3579545, g_system->property(OSystem::PROP_GET_SAMPLE_RATE, 0))) - error("Error initialising YM3812 sound chip emulation"); +// if (0 != YM3812Init(1, 3579545, g_system->property(OSystem::PROP_GET_SAMPLE_RATE, 0))) +// error("Error initialising YM3812 sound chip emulation"); + int env_bits = g_system->property(OSystem::PROP_GET_FMOPL_ENV_BITS, NULL); + int eg_ent = g_system->property(OSystem::PROP_GET_FMOPL_EG_ENT, NULL); + OPLBuildTables((env_bits ? env_bits : FMOPL_ENV_BITS_HQ), (eg_ent ? eg_ent : FMOPL_EG_ENT_HQ)); + _opl = OPLCreate(OPL_TYPE_YM3812, 3579545, g_system->property(OSystem::PROP_GET_SAMPLE_RATE, 0)); adlib_write(1, 0x20); adlib_write(8, 0x40); @@ -876,7 +881,7 @@ void MidiDriver_ADLIB::close() { _mixer->setupPremix (0, 0); // Turn off the OPL emulation - YM3812Shutdown(); +// YM3812Shutdown(); free(_adlib_reg_cache); @@ -986,8 +991,9 @@ void MidiDriver_ADLIB::adlib_write(byte port, byte value) { return; _adlib_reg_cache[port] = value; - YM3812Write(0, 0, port); - YM3812Write(0, 1, value); +// YM3812Write(0, 0, port); +// YM3812Write(0, 1, value); + OPLWriteReg (_opl, port, value); } void MidiDriver_ADLIB::generate_samples(int16 *data, int len) { @@ -997,7 +1003,8 @@ void MidiDriver_ADLIB::generate_samples(int16 *data, int len) { step = len; if (step > _next_tick) step = _next_tick; - YM3812UpdateOne(0, data, step); +// YM3812UpdateOne(0, data, step); + YM3812UpdateOne (_opl, data, step); _next_tick -= step; if (!_next_tick) { |