void Nes_Emu::reset( bool full_reset, bool erase_battery_ram )
{
require( cart() );
clear_sound_buf();
set_timestamp( 0 );
emu.reset( full_reset, erase_battery_ram );
}
blargg_err_t Nes_Emu::emulate_frame( int joypad1, int joypad2 )
{
emu.current_joypad [0] = (joypad1 |= ~0xFF);
emu.current_joypad [1] = (joypad2 |= ~0xFF);
emu.ppu.host_pixels = NULL;
unsigned changed_count = sound_buf->channels_changed_count();
bool new_enabled = (frame_ != NULL);
if ( sound_buf_changed_count != changed_count || sound_enabled != new_enabled )
{
sound_buf_changed_count = changed_count;
sound_enabled = new_enabled;
enable_sound( sound_enabled );
}
frame_t* f = frame_;
if ( f )
{
emu.ppu.max_palette_size = host_palette_size;
emu.ppu.host_palette = f->palette + emu.ppu.palette_begin;
// add black and white for emulator to use (unless emulator uses entire
// palette for frame)
f->palette [252] = 0x0F;
f->palette [254] = 0x30;
f->palette [255] = 0x0F;
if ( host_pixels )
emu.ppu.host_pixels = (BOOST::uint8_t*) host_pixels +
emu.ppu.host_row_bytes * f->top;
if ( sound_buf->samples_avail() )
clear_sound_buf();
nes_time_t frame_len = emu.emulate_frame();
sound_buf->end_frame( frame_len, false );
f = frame_;
f->sample_count = sound_buf->samples_avail();
f->chan_count = sound_buf->samples_per_frame();
f->palette_begin = emu.ppu.palette_begin;
f->palette_size = emu.ppu.palette_size;
f->joypad_read_count = emu.joypad_read_count;
f->burst_phase = emu.ppu.burst_phase;
f->pitch = emu.ppu.host_row_bytes;
f->pixels = emu.ppu.host_pixels + f->left;
}
else
{
emu.ppu.max_palette_size = 0;
emu.emulate_frame();
}
return 0;
}
void Nes_Emu::load_state( Nes_State_ const& in )
{
clear_sound_buf();
emu.load_state( in );
}
