ShuriZma
/
bsnes
mirror of https://github.com/bsnes-emu/bsnes.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
bsnes/sfc/chip/sdd1/decomp.hpp

82 lines
1.8 KiB
C++
Raw Normal View History

Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
struct Decomp {
struct IM { //input manager
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
void init(unsigned offset);
uint8 get_codeword(uint8 code_length);
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
IM(SDD1::Decomp& self) : self(self) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
private:
unsigned offset;
unsigned bit_count;
};
struct GCD { //golomb-code decoder
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
static const uint8 run_count[256];
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
void get_run_count(uint8 code_number, uint8& mps_count, bool& lps_index);
GCD(SDD1::Decomp& self) : self(self) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
};
struct BG { //bits generator
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
void init();
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
uint8 get_bit(bool& end_of_run);
BG(SDD1::Decomp& self, uint8 code_number) : self(self), code_number(code_number) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
private:
const uint8 code_number;
uint8 mps_count;
bool lps_index;
};
struct PEM { //probability estimation module
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
void init();
uint8 get_bit(uint8 context);
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
PEM(SDD1::Decomp& self) : self(self) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
private:
struct State {
uint8 code_number;
uint8 next_if_mps;
uint8 next_if_lps;
};
static const State evolution_table[33];
struct ContextInfo {
uint8 status;
uint8 mps;
} context_info[32];
};
struct CM { //context model
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
void init(unsigned offset);
uint8 get_bit();
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
CM(SDD1::Decomp& self) : self(self) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
private:
uint8 bitplanes_info;
uint8 context_bits_info;
uint8 bit_number;
uint8 current_bitplane;
uint16 previous_bitplane_bits[8];
};
struct OL { //output logic
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
Decomp& self;
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
void init(unsigned offset);
uint8 decompress();
Update to v092r09 release. byuu says: This will be another massive diff from the previous version. All of higan was updated to use the new foo& bar syntax, and I also updated switch statements to be consistent as well (but not in the disassemblers, was starting to get an RSI just from what I already did.) phoenix/{windows, cocoa, qt} need to be updated to use "string foo" instead of "const string& foo", and after that, the major diffs should be finished. This archive is the first time I'm posting my copy-on-write, size+capacity nall::string class, so any feedback on that is welcome as well.
2013-05-05 09:21:30 +00:00
OL(SDD1::Decomp& self) : self(self) {}
Update to v080r01 release. byuu says: There was one unfortunate aspect of the S-DD1 module: you had to give it the DMA length and a target buffer, and it would do the entire decompression at once. Real hardware would work by streaming the data byte by byte. So with that, I went ahead and rewrote the code to handle byte-based streaming. This WIP is an important milestone for me personally. Up until now, bsnes has always had code that was directly copy-pasted from other authors. With all of the DSP and Cx4 chips rewritten in LLE, and the SPC7110 algorithm already ported over from C, and archive decompression code removed for a long time, the S-DD1 was the only module left like this. It's obviously not that big of a deal. The code is basically still a copy of the original. S-DD1 decomp from Andreas Naive, SPC7110 decomp from neviksti, and S-DSP from blargg. And the rest of the emulator is of course only possible because of code and research before it, although everything else has no resemblance at all to code before it. The main advantage, really, is absolute code consistency. I always use the same variant of K&R, for instance. I dunno, I guess I just never really liked the "Build-a-Bear Workshop" style of emulators, like is so prominent in the Genesis scene: "My new Genesis emu (uses Starscream/Musashi 68K core, Marat Fayzullin's Z80 core, YM2612 core from Game_Music_Emu, VDP core from Gens, SVP core from picodrive)", sorry, but you wrote a front-end, not an emulator :/ I also updated the SPC7110 decompression module: I merged the class inside the SPC7110 class (not sure why it was separate before), and replaced the morton lookup tables with for-loops. The morton tables were added to be a tiny bit faster when I was more interested in speed than code clarity. It may be a tiny bit slower (or faster due to less L2 cache usage), but you won't even notice an FPS drop, and it cuts out a good chunk of code and some tables. Lastly, I added pinput_poll() to video_refresh(). Forgot to remove Interface::input_poll() from the C++ side, will have to do that later.
2011-06-28 11:36:00 +00:00
private:
uint8 bitplanes_info;
uint8 r0, r1, r2;
};
void init(unsigned offset);
uint8 read();
Decomp();
IM im;
GCD gcd;
BG bg0, bg1, bg2, bg3, bg4, bg5, bg6, bg7;
PEM pem;
CM cm;
OL ol;
};