bsnes/ruby/audio/oss.cpp

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#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
Update to v101r07 release. byuu says: Added VDP sprite rendering. Can't get any games far enough in to see if it actually works. So in other words, it doesn't work at all and is 100% completely broken. Also added 68K exceptions and interrupts. So far only the VDP interrupt is present. It definitely seems to be firing in commercial games, so that's promising. But the implementation is almost certainly completely wrong. There is fuck all of nothing for documentation on how interrupts actually work. I had to find out the interrupt vector numbers from reading the comments from the Sonic the Hedgehog disassembly. I have literally no fucking clue what I0-I2 (3-bit integer priority value in the status register) is supposed to do. I know that Vblank=6, Hblank=4, Ext(gamepad)=2. I know that at reset, SR.I=7. I don't know if I'm supposed to block interrupts when I is >, >=, <, <= to the interrupt level. I don't know what level CPU exceptions are supposed to be. Also implemented VDP regular DMA. No idea if it works correctly since none of the commercial games run far enough to use it. So again, it's horribly broken for usre. Also improved VDP fill mode. But I don't understand how it takes byte-lengths when the bus is 16-bit. The transfer times indicate it's actually transferring at the same speed as the 68K->VDP copy, strongly suggesting it's actually doing 16-bit transfers at a time. In which case, what happens when you set an odd transfer length? Also, both DMA modes can now target VRAM, VSRAM, CRAM. Supposedly there's all kinds of weird shit going on when you target VSRAM, CRAM with VDP fill/copy modes, but whatever. Get to that later. Also implemented a very lazy preliminary wait mechanism to to stall out a processor while another processor exerts control over the bus. This one's going to be a major work in progress. For one, it totally breaks the model I use to do save states with libco. For another, I don't know if a 68K->VDP DMA instantly locks the CPU, or if it the CPU could actually keep running if it was executing out of RAM when it started the DMA transfer from ROM (eg it's a bus busy stall, not a hard chip stall.) That'll greatly change how I handle the waiting. Also, the OSS driver now supports Audio::Latency. Sound should be even lower latency now. On FreeBSD when set to 0ms, it's absolutely incredible. Cannot detect latency whatsoever. The Mario jump sound seems to happen at the very instant I hear my cherry blue keyswitch activate.
2016-08-15 04:56:38 +00:00
//OSSv4 features: define fallbacks for OSSv3 (where these ioctls are ignored)
#ifndef SNDCTL_DSP_COOKEDMODE
Update to v098r01 release. byuu says: Changelog: - SFC: balanced profile removed - SFC: performance profile removed - SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed - SFC: Coprocessor, Controller (and expansion port) shared Thread code merged to SFC::Cothread - Cothread here just means "Thread with CPU affinity" (couldn't think of a better name, sorry) - SFC: CPU now has vector<Thread*> coprocessors, peripherals; - this is the beginning of work to allow expansion port devices to be dynamically changed at run-time - ruby: all audio drivers default to 48000hz instead of 22050hz now if no frequency is assigned - note: the WASAPI driver can default to whatever the native frequency is; doesn't have to be 48000hz - tomoko: removed the ability to change the frequency from the UI (but it will display the frequency used) - tomoko: removed the timing settings panel - the goal is to work toward smooth video via adaptive sync - the model is broken by not being in control of the audio frequency anyway - it's further broken by PAL running at 50hz and WSC running at 75hz - it was always broken anyway by SNES interlace timing varying from progressive timing - higan: audio/ stub created (for now, it's just nall/dsp/ moved here and included as a header) - higan: video/ stub created - higan/GNUmakefile: now includes build rules for essential components (libco, emulator, audio, video) The audio changes are in preparation to merge wareya's awesome WASAPI work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
#define SNDCTL_DSP_COOKEDMODE _IOW('P', 30, int)
#endif
#ifndef SNDCTL_DSP_POLICY
Update to v098r01 release. byuu says: Changelog: - SFC: balanced profile removed - SFC: performance profile removed - SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed - SFC: Coprocessor, Controller (and expansion port) shared Thread code merged to SFC::Cothread - Cothread here just means "Thread with CPU affinity" (couldn't think of a better name, sorry) - SFC: CPU now has vector<Thread*> coprocessors, peripherals; - this is the beginning of work to allow expansion port devices to be dynamically changed at run-time - ruby: all audio drivers default to 48000hz instead of 22050hz now if no frequency is assigned - note: the WASAPI driver can default to whatever the native frequency is; doesn't have to be 48000hz - tomoko: removed the ability to change the frequency from the UI (but it will display the frequency used) - tomoko: removed the timing settings panel - the goal is to work toward smooth video via adaptive sync - the model is broken by not being in control of the audio frequency anyway - it's further broken by PAL running at 50hz and WSC running at 75hz - it was always broken anyway by SNES interlace timing varying from progressive timing - higan: audio/ stub created (for now, it's just nall/dsp/ moved here and included as a header) - higan: video/ stub created - higan/GNUmakefile: now includes build rules for essential components (libco, emulator, audio, video) The audio changes are in preparation to merge wareya's awesome WASAPI work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
#define SNDCTL_DSP_POLICY _IOW('P', 45, int)
#endif
struct AudioOSS : AudioDriver {
AudioOSS(Audio& super) : AudioDriver(super) {}
~AudioOSS() { terminate(); }
auto create() -> bool override {
super.setDevice("/dev/dsp");
super.setChannels(2);
super.setFrequency(48000);
super.setLatency(3);
buffer.resize(64);
return initialize();
}
Update to 20180731 release. byuu says: I've completed moving all the class objects from `unique_pointer<T>` to just T. The one exception is the Emulator::Interface instance. I can absolutely make that a global object, but only in bsnes where there's just the one emulation core. I also moved all the SettingsWindow and ToolsWindow panels out to their own global objects, and fixed a very difficult bug with GTK TabFrame controls. The configuration settings panel is now the emulator settings panel. And I added some spacing between bold label sections on both the emulator and driver settings panels. I gave fixing ComboButtonItem my best shot, given I can't reproduce the crash. Probably won't work, though. Also made a very slight consistency improvement to ruby and renamed driverName() to driver(). ... An important change ... as a result of moving bsnes to global objects, this means that the constructors for all windows run before the presentation window is displayed. Before this change, only the presentation window was constructed first berore displaying it, followed by the construction of the rest of the GUI windows. The upside to this is that as soon as you see the main window, the GUI is ready to go without a period where it's unresponsive. The downside to this is it takes about 1.5 seconds to show the main window, compared to around 0.75 seconds before. I've no intention of changing that back. So if the startup time becomes a problem, then we'll just have to work on optimizing hiro, so that it can construct all the global Window objects quicker. The main way to do that would be to not do calls to the Layout::setGeometry functions for every widget added, and instead wait until the window is displayed. But I don't have an easy way to do that, because you want the widget geometry values to be sane even before the window is visible to help size certain things.
2018-07-31 10:56:45 +00:00
auto driver() -> string override { return "OSS"; }
auto ready() -> bool override { return _fd >= 0; }
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
auto hasBlocking() -> bool override { return true; }
auto hasDynamic() -> bool override { return true; }
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
auto hasDevices() -> vector<string> override {
vector<string> devices;
Update to v104r06 release. byuu says: Changelog: - gba,ws: removed Thread::step() override¹ - processor/m68k: move.b (a7)+ and move.b (a7)- adjust a7 by two, not by one² - tomoko: created new initialize(Video,Audio,Input)Driver() functions³ - ruby/audio: split Audio::information into Audio::available(Devices,Frequencies,Latencies,Channels)³ - ws: added Model::(WonderSwan,WonderSwanColor,SwanCrystal)() functions for consistency with other cores ¹: this should hopefully fix GBA Pokemon Pinball. Thanks to SuperMikeMan for pointing out the underlying cause. ²: this fixes A Ressaha de Ikou, Mega Bomberman, and probably more games. ³: this is the big change: so there was a problem with WASAPI where you might change your device under the audio settings panel. And your new device may not support the frequency that your old device used. This would end up not updating the frequency, and the pitch would be distorted. The old Audio::information() couldn't tell you what frequencies, latencies, or channels were available for all devices simultaneously, so I had to split them up. The new initializeAudioDriver() function validates you have a correct driver, or it defaults to none. Then it validates a correct device name, or it defaults to the first entry in the list. Then it validates a correct frequency, or defaults to the first in the list. Then finally it validates a correct latency, or defaults to the first in the list. In this way ... we have a clear path now with no API changes required to select default devices, frequencies, latencies, channel counts: they need to be the first items in their respective lists. So, what we need to do now is go through and for every audio driver that enumerates devices, we need to make sure the default device gets added to the top of the list. I'm ... not really sure how to do this with most drivers, so this is definitely going to take some time. Also, when you change a device, initializeAudioDriver() is called again, so if it's a bad device, it will disable the audio driver instead of continuing to send samples at it and hoping that the driver blocked those API calls when it failed to initialize properly. Now then ... since it was a decently-sized API change, it's possible I've broken compilation of the Linux drivers, so please report any compilation errors so that I can fix them.
2017-08-26 01:15:49 +00:00
devices.append("/dev/dsp");
for(auto& device : directory::files("/dev/", "dsp?*")) devices.append(string{"/dev/", device});
return devices;
}
auto hasChannels() -> vector<uint> override {
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
return {1, 2};
Update to v104r06 release. byuu says: Changelog: - gba,ws: removed Thread::step() override¹ - processor/m68k: move.b (a7)+ and move.b (a7)- adjust a7 by two, not by one² - tomoko: created new initialize(Video,Audio,Input)Driver() functions³ - ruby/audio: split Audio::information into Audio::available(Devices,Frequencies,Latencies,Channels)³ - ws: added Model::(WonderSwan,WonderSwanColor,SwanCrystal)() functions for consistency with other cores ¹: this should hopefully fix GBA Pokemon Pinball. Thanks to SuperMikeMan for pointing out the underlying cause. ²: this fixes A Ressaha de Ikou, Mega Bomberman, and probably more games. ³: this is the big change: so there was a problem with WASAPI where you might change your device under the audio settings panel. And your new device may not support the frequency that your old device used. This would end up not updating the frequency, and the pitch would be distorted. The old Audio::information() couldn't tell you what frequencies, latencies, or channels were available for all devices simultaneously, so I had to split them up. The new initializeAudioDriver() function validates you have a correct driver, or it defaults to none. Then it validates a correct device name, or it defaults to the first entry in the list. Then it validates a correct frequency, or defaults to the first in the list. Then finally it validates a correct latency, or defaults to the first in the list. In this way ... we have a clear path now with no API changes required to select default devices, frequencies, latencies, channel counts: they need to be the first items in their respective lists. So, what we need to do now is go through and for every audio driver that enumerates devices, we need to make sure the default device gets added to the top of the list. I'm ... not really sure how to do this with most drivers, so this is definitely going to take some time. Also, when you change a device, initializeAudioDriver() is called again, so if it's a bad device, it will disable the audio driver instead of continuing to send samples at it and hoping that the driver blocked those API calls when it failed to initialize properly. Now then ... since it was a decently-sized API change, it's possible I've broken compilation of the Linux drivers, so please report any compilation errors so that I can fix them.
2017-08-26 01:15:49 +00:00
}
auto hasFrequencies() -> vector<uint> override {
return {44100, 48000, 96000};
}
auto hasLatencies() -> vector<uint> override {
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
return {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
Update to v104r06 release. byuu says: Changelog: - gba,ws: removed Thread::step() override¹ - processor/m68k: move.b (a7)+ and move.b (a7)- adjust a7 by two, not by one² - tomoko: created new initialize(Video,Audio,Input)Driver() functions³ - ruby/audio: split Audio::information into Audio::available(Devices,Frequencies,Latencies,Channels)³ - ws: added Model::(WonderSwan,WonderSwanColor,SwanCrystal)() functions for consistency with other cores ¹: this should hopefully fix GBA Pokemon Pinball. Thanks to SuperMikeMan for pointing out the underlying cause. ²: this fixes A Ressaha de Ikou, Mega Bomberman, and probably more games. ³: this is the big change: so there was a problem with WASAPI where you might change your device under the audio settings panel. And your new device may not support the frequency that your old device used. This would end up not updating the frequency, and the pitch would be distorted. The old Audio::information() couldn't tell you what frequencies, latencies, or channels were available for all devices simultaneously, so I had to split them up. The new initializeAudioDriver() function validates you have a correct driver, or it defaults to none. Then it validates a correct device name, or it defaults to the first entry in the list. Then it validates a correct frequency, or defaults to the first in the list. Then finally it validates a correct latency, or defaults to the first in the list. In this way ... we have a clear path now with no API changes required to select default devices, frequencies, latencies, channel counts: they need to be the first items in their respective lists. So, what we need to do now is go through and for every audio driver that enumerates devices, we need to make sure the default device gets added to the top of the list. I'm ... not really sure how to do this with most drivers, so this is definitely going to take some time. Also, when you change a device, initializeAudioDriver() is called again, so if it's a bad device, it will disable the audio driver instead of continuing to send samples at it and hoping that the driver blocked those API calls when it failed to initialize properly. Now then ... since it was a decently-sized API change, it's possible I've broken compilation of the Linux drivers, so please report any compilation errors so that I can fix them.
2017-08-26 01:15:49 +00:00
}
auto setDevice(string device) -> bool override { return initialize(); }
auto setBlocking(bool blocking) -> bool override { return updateBlocking(); }
auto setChannels(uint channels) -> bool override { return initialize(); }
auto setFrequency(uint frequency) -> bool override { return initialize(); }
auto setLatency(uint latency) -> bool override { return initialize(); }
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
auto clear() -> void override {
buffer.resize(64);
}
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
auto level() -> double override {
audio_buf_info info;
ioctl(_fd, SNDCTL_DSP_GETOSPACE, &info);
return (double)(_bufferSize - info.bytes) / _bufferSize;
}
auto output(const double samples[]) -> void override {
Update to v103r22 release. byuu says: Changelog: - ruby: ported all remaining drivers to new API¹ - ruby/wasapi: fix for dropping one sample per period [SuperMikeMan] - gb: emulated most of the TAMA RTC; but RTC state is still volatile² ¹: the new ports are: - audio/{directsound, alsa, pulseaudio, pulseaudiosimple, ao} - input/{udev, quartz, carbon} It's pretty much guaranteed many of them will have compilation errors. Please paste the error logs and I'll try to fix them up. It may take a WIP or two to get there. It's also possible things broke from the updates. If so, I could use help comparing the old file to the new file, looking for mistakes, since I can't test on these platforms apart from audio/directsound. Please report working drivers in this list, so we can mark them off the list. I'll need both macOS and Linux testers. audio/directsound.cpp:112:    if(DirectSoundCreate(0, &_interface, 0) != DS_OK) return terminate(), false; ²: once I get this working, I'll add load/save support for the RTC values. For now, the RTC data will be lost when you close the emulator. Right now, you can set the date/time in real-time mode, and when you start the game, the time will be correct, and the time will tick forward. Note that it runs off emulated time instead of actual real time, so if you fast-forward to 300%, one minute will be 20 seconds. The really big limitation right now is that when you exit the game, and restart it, and resume a new game, the hour spot gets corrupted, and this seems to instantly kill your pet. Fun. This is crazy because the commands the game sends to the TAMA interface are identical between starting a new game and getting in-game versus loading a game. It's likely going to require disassembling the game's code and seeing what in the hell it's doing, but I am extremely bad at LR35092 assembly. Hopefully endrift can help here :|
2017-07-28 11:42:24 +00:00
if(!ready()) return;
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
for(uint n : range(self.channels)) {
buffer.write(sclamp<16>(samples[n] * 32767.0));
if(buffer.full()) write(_fd, buffer.data(), buffer.size<uint8_t>());
}
}
private:
auto initialize() -> bool {
terminate();
if(!hasDevices().find(self.device)) self.device = hasDevices().first();
Update to v103r16 release. byuu says: Changelog: - emulator/audio: added the ability to change the output frequency at run-time without emulator reset - tomoko: display video synchronize option again¹ - tomoko: Settings→Configuration expanded to Settings→{Video, Audio, Input, Hotkey, Advanced} Settings² - tomoko: fix default population of audio settings tab - ruby: Audio::frequency is a double now (to match both Emulator::Audio and ASIO)³ - tomoko: changing the audio device will repopulate the frequency and latency lists - tomoko: changing the audio frequency can now be done in real-time - ruby/audio/asio: added missing device() information, so devices can be changed now - ruby/audio/openal: ported to new API; added device selection support - ruby/audio/wasapi: ported to new API, but did not test yet (it's assuredly still broken)⁴ ¹: I'm uneasy about this ... but, I guess if people want to disable audio and just have smooth scrolling video ... so be it. With Screwtape's documentation, hopefully that'll help people understand that video synchronization always breaks audio synchronization. I may change this to a child menu that lets you pick between {no synchronization, video synchronization, audio synchronization} as a radio selection. ²: given how much more useful the video and audio tabs are now, I felt that four extra menu items were worth saving a click and going right to the tab you want. This also matches the behavior of the Tools menu displaying all tool options and taking you directly to each tab. This is kind of a hard change to get used to ... but I think it's for the better. ³: kind of stupid because I've never seen a hardware sound card where floor(frequency) != frequency, but whatever. Yay consistency. ⁴: I'm going to move it to be event-driven, and try to support 24-bit sample formats if possible. Who knows which cards that'll fix and which cards that'll break. I may end up making multiple WASAPI drivers so people can find one that actually works for them. We'll see.
2017-07-17 10:32:36 +00:00
_fd = open(self.device, O_WRONLY, O_NONBLOCK);
if(_fd < 0) return false;
Update to v101r07 release. byuu says: Added VDP sprite rendering. Can't get any games far enough in to see if it actually works. So in other words, it doesn't work at all and is 100% completely broken. Also added 68K exceptions and interrupts. So far only the VDP interrupt is present. It definitely seems to be firing in commercial games, so that's promising. But the implementation is almost certainly completely wrong. There is fuck all of nothing for documentation on how interrupts actually work. I had to find out the interrupt vector numbers from reading the comments from the Sonic the Hedgehog disassembly. I have literally no fucking clue what I0-I2 (3-bit integer priority value in the status register) is supposed to do. I know that Vblank=6, Hblank=4, Ext(gamepad)=2. I know that at reset, SR.I=7. I don't know if I'm supposed to block interrupts when I is >, >=, <, <= to the interrupt level. I don't know what level CPU exceptions are supposed to be. Also implemented VDP regular DMA. No idea if it works correctly since none of the commercial games run far enough to use it. So again, it's horribly broken for usre. Also improved VDP fill mode. But I don't understand how it takes byte-lengths when the bus is 16-bit. The transfer times indicate it's actually transferring at the same speed as the 68K->VDP copy, strongly suggesting it's actually doing 16-bit transfers at a time. In which case, what happens when you set an odd transfer length? Also, both DMA modes can now target VRAM, VSRAM, CRAM. Supposedly there's all kinds of weird shit going on when you target VSRAM, CRAM with VDP fill/copy modes, but whatever. Get to that later. Also implemented a very lazy preliminary wait mechanism to to stall out a processor while another processor exerts control over the bus. This one's going to be a major work in progress. For one, it totally breaks the model I use to do save states with libco. For another, I don't know if a 68K->VDP DMA instantly locks the CPU, or if it the CPU could actually keep running if it was executing out of RAM when it started the DMA transfer from ROM (eg it's a bus busy stall, not a hard chip stall.) That'll greatly change how I handle the waiting. Also, the OSS driver now supports Audio::Latency. Sound should be even lower latency now. On FreeBSD when set to 0ms, it's absolutely incredible. Cannot detect latency whatsoever. The Mario jump sound seems to happen at the very instant I hear my cherry blue keyswitch activate.
2016-08-15 04:56:38 +00:00
int cooked = 1;
ioctl(_fd, SNDCTL_DSP_COOKEDMODE, &cooked);
Update to v101r07 release. byuu says: Added VDP sprite rendering. Can't get any games far enough in to see if it actually works. So in other words, it doesn't work at all and is 100% completely broken. Also added 68K exceptions and interrupts. So far only the VDP interrupt is present. It definitely seems to be firing in commercial games, so that's promising. But the implementation is almost certainly completely wrong. There is fuck all of nothing for documentation on how interrupts actually work. I had to find out the interrupt vector numbers from reading the comments from the Sonic the Hedgehog disassembly. I have literally no fucking clue what I0-I2 (3-bit integer priority value in the status register) is supposed to do. I know that Vblank=6, Hblank=4, Ext(gamepad)=2. I know that at reset, SR.I=7. I don't know if I'm supposed to block interrupts when I is >, >=, <, <= to the interrupt level. I don't know what level CPU exceptions are supposed to be. Also implemented VDP regular DMA. No idea if it works correctly since none of the commercial games run far enough to use it. So again, it's horribly broken for usre. Also improved VDP fill mode. But I don't understand how it takes byte-lengths when the bus is 16-bit. The transfer times indicate it's actually transferring at the same speed as the 68K->VDP copy, strongly suggesting it's actually doing 16-bit transfers at a time. In which case, what happens when you set an odd transfer length? Also, both DMA modes can now target VRAM, VSRAM, CRAM. Supposedly there's all kinds of weird shit going on when you target VSRAM, CRAM with VDP fill/copy modes, but whatever. Get to that later. Also implemented a very lazy preliminary wait mechanism to to stall out a processor while another processor exerts control over the bus. This one's going to be a major work in progress. For one, it totally breaks the model I use to do save states with libco. For another, I don't know if a 68K->VDP DMA instantly locks the CPU, or if it the CPU could actually keep running if it was executing out of RAM when it started the DMA transfer from ROM (eg it's a bus busy stall, not a hard chip stall.) That'll greatly change how I handle the waiting. Also, the OSS driver now supports Audio::Latency. Sound should be even lower latency now. On FreeBSD when set to 0ms, it's absolutely incredible. Cannot detect latency whatsoever. The Mario jump sound seems to happen at the very instant I hear my cherry blue keyswitch activate.
2016-08-15 04:56:38 +00:00
//policy: 0 = minimum latency (higher CPU usage); 10 = maximum latency (lower CPU usage)
int policy = min(10, self.latency);
ioctl(_fd, SNDCTL_DSP_POLICY, &policy);
int channels = self.channels;
Update to v103r16 release. byuu says: Changelog: - emulator/audio: added the ability to change the output frequency at run-time without emulator reset - tomoko: display video synchronize option again¹ - tomoko: Settings→Configuration expanded to Settings→{Video, Audio, Input, Hotkey, Advanced} Settings² - tomoko: fix default population of audio settings tab - ruby: Audio::frequency is a double now (to match both Emulator::Audio and ASIO)³ - tomoko: changing the audio device will repopulate the frequency and latency lists - tomoko: changing the audio frequency can now be done in real-time - ruby/audio/asio: added missing device() information, so devices can be changed now - ruby/audio/openal: ported to new API; added device selection support - ruby/audio/wasapi: ported to new API, but did not test yet (it's assuredly still broken)⁴ ¹: I'm uneasy about this ... but, I guess if people want to disable audio and just have smooth scrolling video ... so be it. With Screwtape's documentation, hopefully that'll help people understand that video synchronization always breaks audio synchronization. I may change this to a child menu that lets you pick between {no synchronization, video synchronization, audio synchronization} as a radio selection. ²: given how much more useful the video and audio tabs are now, I felt that four extra menu items were worth saving a click and going right to the tab you want. This also matches the behavior of the Tools menu displaying all tool options and taking you directly to each tab. This is kind of a hard change to get used to ... but I think it's for the better. ³: kind of stupid because I've never seen a hardware sound card where floor(frequency) != frequency, but whatever. Yay consistency. ⁴: I'm going to move it to be event-driven, and try to support 24-bit sample formats if possible. Who knows which cards that'll fix and which cards that'll break. I may end up making multiple WASAPI drivers so people can find one that actually works for them. We'll see.
2017-07-17 10:32:36 +00:00
ioctl(_fd, SNDCTL_DSP_CHANNELS, &channels);
ioctl(_fd, SNDCTL_DSP_SETFMT, &_format);
int frequency = self.frequency;
Update to v103r16 release. byuu says: Changelog: - emulator/audio: added the ability to change the output frequency at run-time without emulator reset - tomoko: display video synchronize option again¹ - tomoko: Settings→Configuration expanded to Settings→{Video, Audio, Input, Hotkey, Advanced} Settings² - tomoko: fix default population of audio settings tab - ruby: Audio::frequency is a double now (to match both Emulator::Audio and ASIO)³ - tomoko: changing the audio device will repopulate the frequency and latency lists - tomoko: changing the audio frequency can now be done in real-time - ruby/audio/asio: added missing device() information, so devices can be changed now - ruby/audio/openal: ported to new API; added device selection support - ruby/audio/wasapi: ported to new API, but did not test yet (it's assuredly still broken)⁴ ¹: I'm uneasy about this ... but, I guess if people want to disable audio and just have smooth scrolling video ... so be it. With Screwtape's documentation, hopefully that'll help people understand that video synchronization always breaks audio synchronization. I may change this to a child menu that lets you pick between {no synchronization, video synchronization, audio synchronization} as a radio selection. ²: given how much more useful the video and audio tabs are now, I felt that four extra menu items were worth saving a click and going right to the tab you want. This also matches the behavior of the Tools menu displaying all tool options and taking you directly to each tab. This is kind of a hard change to get used to ... but I think it's for the better. ³: kind of stupid because I've never seen a hardware sound card where floor(frequency) != frequency, but whatever. Yay consistency. ⁴: I'm going to move it to be event-driven, and try to support 24-bit sample formats if possible. Who knows which cards that'll fix and which cards that'll break. I may end up making multiple WASAPI drivers so people can find one that actually works for them. We'll see.
2017-07-17 10:32:36 +00:00
ioctl(_fd, SNDCTL_DSP_SPEED, &frequency);
updateBlocking();
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
audio_buf_info info;
ioctl(_fd, SNDCTL_DSP_GETOSPACE, &info);
_bufferSize = info.bytes;
return true;
}
auto terminate() -> void {
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
if(!ready()) return;
close(_fd);
_fd = -1;
}
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
auto updateBlocking() -> bool {
if(!ready()) return false;
auto flags = fcntl(_fd, F_GETFL);
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
if(flags < 0) return false;
self.blocking ? flags &=~ O_NONBLOCK : flags |= O_NONBLOCK;
fcntl(_fd, F_SETFL, flags);
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
return true;
}
AudioOSS& self = *this;
int _fd = -1;
int _format = AFMT_S16_LE;
Update to 20180728 release. byuu says: Sigh, I seem to be spiraling a bit here ... but the work is very important. Hopefully I can get a solid WIP together soon. But for now... I've integrated dynamic rate control into ruby::Audio via setDynamic(bool) for now. It's very demanding, as you would expect. When it's not in use, I realized the OSS driver's performance was pretty bad due to calling write() for every sample for every channel. I implemented a tiny 256-sample buffer and bsnes went from 290fps to 330fps on my FreeBSD desktop. It may be possible to do the same buffering with DRC, but for now, I'm not doing so, and adjusting the audio input frequency on every sample. I also added ruby::Video::setFlush(bool), which is available only in the OpenGL drivers, and this causes glFinish() to be called after swapping display buffers. I really couldn't think of a good name for this, "hard GPU sync" sounds kind of silly. In my view, flush is what commits queued events. Eg fflush(). OpenGL of course treats glFlush differently (I really don't even know what the point of it is even after reading the manual ...), and then has glFinish ... meh, whatever. It's setFlush(bool) until I come up with something better. Also as expected, this one's a big hit to performance. To implement the DRC, I started putting helper functions into the ruby video/audio/input core classes. And then the XVideo driver started crashing. It took hours and hours and hours to track down the problem: you have to clear XSetWindowAttributes to zero before calling XCreateWindow. No amount of `--sync`, `gdb break gdk_x_error`, `-Og`, etc will make Xlib be even remotely helpful in debugging errors like this. The GLX, GLX2, and XVideo drivers basically worked by chance before. If the stack frame had the right memory cleared, it worked. Otherwise it'd crash with BadValue, and my changing things broke that condition on the XVideo driver. So this has been fixed in all three now. Once XVideo was running again, I realized that non-power of two video sizes were completely broken for the YUV formats. It took a while, but I managed to fix all of that as well. At this point, most of ruby is going to be broken outside of FreeBSD, as I still need to finish updating all the drivers.
2018-07-28 11:21:39 +00:00
int _bufferSize = 1;
queue<int16_t> buffer;
};