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This makes Piano exactly as usable as when I started the large refactor
some years ago, which *sounds* like I'm a terrible person but now it (1)
looks nicer and (2) has a flexible backend that can already deal with
aribtrary kinds of processors on any track.
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This class had slightly confusing semantics and the added weirdness
doesn't seem worth it just so we can say "." instead of "->" when
iterating over a vector of NNRPs.
This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
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We can just clamp instead.
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This was a rather easy change, since only parameter names make use of
strings in the first place.
This also improves OOM resistance: If we can't create a parameter name,
we will just set it to the empty string.
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On mouse move the pressed button is not present in the event argument
which causes the corresponding code to never fire. Instead it now stores
the original mouse down event and acts according to that on mouse move.
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We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
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Otherwise, we end up propagating those dependencies into targets that
link against that library, which creates unnecessary link-time
dependencies.
Also included are changes to readd now missing dependencies to tools
that actually need them.
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This processor will not appear in the normal processor chain later on,
but is used for final mixing of the track.
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This can now handle mute, volume control and panning.
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This is a tangly commit and it fixes all the bugs that a plain move
would have caused (i.e. we need to touch other logic which had wrong
assumptions).
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That's the standard naming convention, but I didn't follow it when
originally creating LibDSP and nobody corrected me, so here I am one
year later :^)
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This is quite elusive.
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This is a class for handling user MIDI input, which is combined by the
Track with roll note data if applicable.
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This has mainly performance benefits, so that we only need to call into
all processors once for every audio buffer segment. It requires
adjusting quite some logic in most processors and in Track, as we have
to consider a larger collection of notes and samples at each step.
There's some cautionary TODOs in the currently unused LibDSP tracks
because they don't do things properly yet.
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This is what the old Transport in Piano had, but as everyone just
references Transport directly, there's no need for it anymore.
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This was a leftover from the early days of Piano, and there's no reason
to leave it that way especially if we want to use more complex
collection APIs in the future.
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* Don't inherit from Core::Object everywhere, that's overkill. Use
RefCounted instead.
* Change some constructor visibilites to facilitate the above.
* default-implement all virtual destructors if possible.
* Drive-by include hygiene.
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This has been overkill from the start, and it has been bugging me for a
long time. With this change, we're probably a bit slower on most
platforms but save huge amounts of space with all in-memory sample
datastructures.
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The file is now renamed to Queue.h, and the Resampler APIs with
LegacyBuffer are also removed. These changes look large because nobody
actually needs Buffer.h (or Queue.h). It was mostly transitive
dependencies on the massive list of includes in that header, which are
now almost all gone. Instead, we include common things like Sample.h
directly, which should give faster compile times as very few files
actually need Queue.h.
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Calculating sin and cos at once is quite a bit cheaper than calculating
them individually.
x87 has even a dedicated instruction for it: `fsincos`.
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Windows are used in many DSP related applications. A prominent use case
is spectral analysis, where windowing the signal before doing spectral
analysis mitigates spectral leakage.
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Several related improvements to our Fast Fourier Transform
implementation:
- FFT now operates on spans, allowing it to use many more container
types other than Vector. It's intended anyways that FFT transmutes the
input data.
- FFT is now constexpr, moving the implementation to the header and
removing the cpp file. This means that if we have static collections
of samples, we can transform them at compile time.
- sample_data.data() weirdness is now gone.
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This doesn't affect the parameter's own behavior but is part of the
parameter meta-data, just as the name. If a parameter is logarithmic,
UI elements should represent it with an interface that scales
logarithmically.
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This implements a generic IMDCT to be used by the MP3 decoder.
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Use pointer or reference to avoid slicing from "PitchedEnvelope"
to "Envelope". This was found by SonarCloud.
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LibDSP can greatly benefit from this nice FFT implementation, so let's
move it into the fitting library :^)
Note that this now requires linking SoundPlayer against LibDSP. That's
not an issue (LibDSP is rather small currently anyways), as we can
probably make great use of it in the future anyways.
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Almost all synthesizer code in Piano is removed in favor of the LibDSP
reimplementation.
This causes some issues that mainly have to do with the way Piano
currently handles talking to LibDSP. Additionally, the sampler is gone
for now and will be reintroduced with future work.
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The Classic synthesizer is a replication of Piano's old synthesizer
engine that is removed in the next commit.
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For the upcoming synthesizer, having an abstracted ADSR envelope concept
is highly desirable. Additionally, Envelope is mostly constexpr and
therefore super fast :^)
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This isn't a complete conversion to ErrorOr<void>, but a good chunk.
The end goal here is to propagate buffer allocation failures to the
caller, and allow the use of TRY() with formatting functions.
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This fixes all current code smells, bugs and issues reported by
SonarCloud static analysis. Other issues are almost exclusively false
positives. This makes much code clearer, and some minor benefits in
performance or bug evasion may be gained.
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Previously, a collection of notes (Vector or Array) would be created and
promptly deleted for every sample (at least 44 thousand times per
second!). This was measured to be one of the most significant
performance drawbacks as well as the most obvious performance
improvement I could currently find here. Although it will not cause
Piano to lag currently (at least on virtualized systems), I see an
incoming issue once we get the capability to use more processors.
Now, we use a HashMap correlating pitches to notes, and Track reuses the
data structure in order to avoid reallocations. That is the reason for
introducing the fast clear_with_capacity to HashMap.
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"Frame" is an MPEG term, which is not only unintuitive but also
overloaded with different meaning by other codecs (e.g. FLAC).
Therefore, use the standard term Sample for the central audio structure.
The class is also extracted to its own file, because it's becoming quite
large. Bundling these two changes means not distributing similar
modifications (changing names and paths) across commits.
Co-authored-by: kleines Filmröllchen <malu.bertsch@gmail.com>
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Derivatives of Core::Object should be constructed through
ClassName::construct(), to avoid handling ref-counted objects with
refcount zero. Fixing the visibility means that misuses like this are
more difficult.
This commit is separate from the other Applications/Libraries changes
because it required additional adaption of the code. Note that the old
code did precisely what these changes try to prevent: Create and handle
a ref-counted object with a refcount of zero.
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SonarCloud flagged this as m_delay_buffer is technically uninitialized
at the point at which the POD types are initialized in a constructor.
I don't check to see if this was actually a real issue, as the member
is ultimately unused. So lets just get rid of it.
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With logarithmic volume scaling, the delay effect can sound more
natural.
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