openMSX
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#include <ResampledSoundDevice.hh>
Public Types | |
enum class | ResampleType { HQ , LQ , BLIP } |
Public Member Functions | |
bool | generateInput (float *buffer, size_t num) |
Note: To enable various optimizations (like SSE), this method is allowed to generate up to 3 extra sample. | |
DynamicClock & | getEmuClock () |
Public Member Functions inherited from openmsx::SoundDevice | |
SoundDevice (const SoundDevice &)=delete | |
SoundDevice (SoundDevice &&)=delete | |
SoundDevice & | operator= (const SoundDevice &)=delete |
SoundDevice & | operator= (SoundDevice &&)=delete |
const std::string & | getName () const |
Get the unique name that identifies this sound device. | |
std::string_view | getDescription () const |
Gets a description of this sound device, to be presented to the user. | |
unsigned | getNumChannels () const |
How many channels does this device have? | |
bool | hasStereoChannels () const |
Are the individual channels of this device stereo? | |
bool | isStereo () const |
Is the full output of this device stereo? | |
AmplificationFactors | getAmplificationFactor () const |
void | setSoftwareVolume (float volume, EmuTime::param time) |
Change the 'software volume' of this sound device. | |
void | setSoftwareVolume (float left, float right, EmuTime::param time) |
void | recordChannel (unsigned channel, const Filename &filename) |
void | muteChannel (unsigned channel, bool muted) |
std::span< const float > | getLastBuffer (unsigned channel) |
Query the last generated audio signal for a specific channel. | |
float | getNativeSampleRate () const |
The samples returned by 'getLastBuffer()' have this sample rate. | |
unsigned | getLastMonoBufferSize () const |
getLastBuffer() with return buffers containing this many samples. | |
unsigned | getLastBufferSize () const |
Protected Member Functions | |
ResampledSoundDevice (MSXMotherBoard &motherBoard, std::string_view name, static_string_view description, unsigned channels, unsigned inputSampleRate, bool stereo) | |
~ResampledSoundDevice () | |
void | setOutputRate (unsigned hostSampleRate, double speed) override |
When a SoundDevice registers itself with the Mixer, the Mixer sets the required sampleRate through this method. | |
bool | updateBuffer (size_t length, float *buffer, EmuTime::param time) override |
Generate sample data. | |
void | update (const Setting &setting) noexcept override |
void | createResampler () |
Protected Member Functions inherited from openmsx::SoundDevice | |
SoundDevice (MSXMixer &mixer, std::string_view name, static_string_view description, unsigned numChannels, unsigned inputRate, bool stereo) | |
Constructor. | |
~SoundDevice () | |
virtual float | getAmplificationFactorImpl () const |
Get amplification/attenuation factor for this device. | |
void | registerSound (const DeviceConfig &config) |
Registers this sound device with the Mixer. | |
void | unregisterSound () |
Unregisters this sound device with the Mixer. | |
void | updateStream (EmuTime::param time) |
void | setInputRate (unsigned sampleRate) |
unsigned | getInputRate () const |
virtual void | generateChannels (std::span< float * > buffers, unsigned num)=0 |
Abstract method to generate the actual sound data. | |
bool | mixChannels (float *dataOut, size_t samples) |
Calls generateChannels() and combines the output to a single channel. | |
const DynamicClock & | getHostSampleClock () const |
See MSXMixer::getHostSampleClock(). | |
double | getEffectiveSpeed () const |
Protected Member Functions inherited from openmsx::Observer< Setting > | |
Observer ()=default | |
~Observer ()=default | |
Observer (const Observer &)=delete | |
Observer (Observer &&)=delete | |
Observer & | operator= (const Observer &)=delete |
Observer & | operator= (Observer &&)=delete |
virtual void | subjectDeleted (const Setting &) |
Additional Inherited Members | |
Static Public Attributes inherited from openmsx::SoundDevice | |
static constexpr unsigned | MAX_CHANNELS = 24 |
Static Protected Member Functions inherited from openmsx::SoundDevice | |
static void | addFill (float *&buffer, float value, unsigned num) |
Adds a number of samples that all have the same value. | |
Definition at line 19 of file ResampledSoundDevice.hh.
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strong |
Enumerator | |
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HQ | |
LQ | |
BLIP |
Definition at line 22 of file ResampledSoundDevice.hh.
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protected |
Definition at line 20 of file ResampledSoundDevice.cc.
References openmsx::Subject< T >::attach().
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protected |
Definition at line 31 of file ResampledSoundDevice.cc.
References openmsx::Subject< T >::detach().
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protected |
Definition at line 59 of file ResampledSoundDevice.cc.
References BLIP, openmsx::ResampleLQ< CHANNELS >::create(), openmsx::SoundDevice::getEffectiveSpeed(), openmsx::EnumSetting< T >::getEnum(), openmsx::SoundDevice::getHostSampleClock(), openmsx::SoundDevice::getInputRate(), openmsx::DynamicClock::getPeriod(), openmsx::DynamicClock::getTime(), HQ, openmsx::SoundDevice::isStereo(), LQ, openmsx::DynamicClock::reset(), openmsx::DynamicClock::setPeriod(), and UNREACHABLE.
Referenced by setOutputRate().
bool openmsx::ResampledSoundDevice::generateInput | ( | float * | buffer, |
size_t | num | ||
) |
Note: To enable various optimizations (like SSE), this method is allowed to generate up to 3 extra sample.
Definition at line 47 of file ResampledSoundDevice.cc.
References openmsx::SoundDevice::mixChannels().
Referenced by openmsx::ResampleTrivial::generateOutputImpl().
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inline |
Definition at line 30 of file ResampledSoundDevice.hh.
Referenced by openmsx::ResampleLQ< CHANNELS >::create(), openmsx::ResampleAlgo::getEmuClock(), openmsx::ResampleBlip< CHANNELS >::ResampleBlip(), openmsx::ResampleLQ< CHANNELS >::ResampleLQ(), openmsx::ResampleLQDown< CHANNELS >::ResampleLQDown(), openmsx::ResampleLQUp< CHANNELS >::ResampleLQUp(), and openmsx::YM2413::writePort().
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overrideprotectedvirtual |
When a SoundDevice registers itself with the Mixer, the Mixer sets the required sampleRate through this method.
All sound devices share a common sampleRate.
Implements openmsx::SoundDevice.
Definition at line 36 of file ResampledSoundDevice.cc.
References createResampler().
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overrideprotectedvirtualnoexcept |
Implements openmsx::Observer< Setting >.
Definition at line 52 of file ResampledSoundDevice.cc.
References setting.
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overrideprotectedvirtual |
Generate sample data.
length | The number of required samples |
buffer | This buffer should be filled |
time | current time |
This method is regularly called from the Mixer, it should return a pointer to a buffer filled with the required number of samples. Samples are always floats, later they are converted to the systems native format (e.g. 16-bit signed).
Note: To enable various optimizations (like SSE), this method can fill the output buffer with up to 3 extra samples. Those extra samples should be ignored, though the caller must make sure the buffer has enough space to hold them.
Implements openmsx::SoundDevice.
Definition at line 41 of file ResampledSoundDevice.cc.