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snes9x
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Adjust snapshot to load old DSP data.

This commit is contained in:
BearOso 2023-03-16 15:21:41 -05:00
parent 410c52a7c9
commit f1881a21fc
3 changed files with 26 additions and 8 deletions
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1
apu/apu.cpp
View File

@ -350,7 +350,6 @@ void S9xAPULoadState(uint8 *block)
SNES::smp.load_state(&ptr); SNES::smp.load_state(&ptr);
SNES::dsp.load_state(&ptr); SNES::dsp.load_state(&ptr);
spc::reference_time = SNES::get_le32(ptr); spc::reference_time = SNES::get_le32(ptr);
ptr += sizeof(int32); ptr += sizeof(int32);
spc::remainder = SNES::get_le32(ptr); spc::remainder = SNES::get_le32(ptr);

23
snapshot.cpp
View File

@ -1576,11 +1576,30 @@ int S9xUnfreezeFromStream (STREAM stream)
if (local_fillram) if (local_fillram)
memcpy(Memory.FillRAM, local_fillram, 0x8000); memcpy(Memory.FillRAM, local_fillram, 0x8000);
if(version < SNAPSHOT_VERSION_BAPU) { if (version < SNAPSHOT_VERSION_BAPU)
{
printf("Using Blargg APU snapshot loading (snapshot version %d, current is %d)\n...", version, SNAPSHOT_VERSION); printf("Using Blargg APU snapshot loading (snapshot version %d, current is %d)\n...", version, SNAPSHOT_VERSION);
S9xAPULoadBlarggState(local_apu_sound); S9xAPULoadBlarggState(local_apu_sound);
} else }
else if (version < 12)
{
printf("Adjusting old APU snapshot (snapshot version %d, current is %d)\n", version, SNAPSHOT_VERSION);
const size_t spc_block_size = 65700;
const size_t old_dsp_block_size = 514;
const size_t added_bytes_v12 = 128;
const size_t bytes_afterward = 16;
// Shift end to make room for extra 128 bytes
memmove(local_apu_sound + spc_block_size + old_dsp_block_size + added_bytes_v12,
local_apu_sound + spc_block_size + old_dsp_block_size,
bytes_afterward);
// Copy saved internal registers to external registers
memmove(local_apu_sound + spc_block_size + old_dsp_block_size, local_apu_sound + spc_block_size, added_bytes_v12);
S9xAPULoadState(local_apu_sound); S9xAPULoadState(local_apu_sound);
}
else if (version >= 12)
{
S9xAPULoadState(local_apu_sound);
}
struct SControlSnapshot ctl_snap; struct SControlSnapshot ctl_snap;
UnfreezeStructFromCopy(&ctl_snap, SnapControls, COUNT(SnapControls), local_control_data, version); UnfreezeStructFromCopy(&ctl_snap, SnapControls, COUNT(SnapControls), local_control_data, version);

2
snapshot.h
View File

@ -13,7 +13,7 @@
#define SNAPSHOT_VERSION_IRQ 7 #define SNAPSHOT_VERSION_IRQ 7
#define SNAPSHOT_VERSION_BAPU 8 #define SNAPSHOT_VERSION_BAPU 8
#define SNAPSHOT_VERSION_IRQ_2018 11 // irq changes were introduced earlier, since this we store NextIRQTimer directly #define SNAPSHOT_VERSION_IRQ_2018 11 // irq changes were introduced earlier, since this we store NextIRQTimer directly
#define SNAPSHOT_VERSION 11 #define SNAPSHOT_VERSION 12
#define SUCCESS 1 #define SUCCESS 1
#define WRONG_FORMAT (-1) #define WRONG_FORMAT (-1)