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GstBadAudio-1.0.d.ts
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GstBadAudio-1.0.d.ts
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// @ts-nocheck
/*
* Type Definitions for node-gtk (https://github.com/romgrk/node-gtk)
*
* These type definitions are automatically generated, do not edit them by hand.
* If you found a bug fix it in ts-for-gir itself or create a bug report on https://github.com/sammydre/ts-for-gjs
*/
/**
* GstBadAudio-1.0
*/
import type GstBase from './GstBase-1.0';
import type Gst from './Gst-1.0';
import type GObject from './GObject-2.0';
import type GLib from './GLib-2.0';
import type GModule from './GModule-2.0';
import type GstAudio from './GstAudio-1.0';
export namespace GstBadAudio {
/**
* The output mode defines how the output behaves with regards to looping. Either the playback position is
* moved back to the beginning of the loop, acting like a backwards seek, or it increases steadily, as if
* loop were "unrolled".
*/
enum NonstreamAudioOutputMode {
/**
* Playback position is moved back to the beginning of the loop
*/
LOOPING,
/**
* Playback position increases steadily, even when looping
*/
STEADY,
}
/**
* The subsong mode defines how the decoder shall handle subsongs.
*/
enum NonstreamAudioSubsongMode {
/**
* Only the current subsong is played
*/
SINGLE,
/**
* All subsongs are played (current subsong index is ignored)
*/
ALL,
/**
* Use decoder specific default behavior
*/
DECODER_DEFAULT,
}
/**
* The name of the template for the sink pad.
*/
const NONSTREAM_AUDIO_DECODER_SINK_NAME: string
/**
* The name of the template for the source pad.
*/
const NONSTREAM_AUDIO_DECODER_SRC_NAME: string
interface NonstreamAudioDecoder_ConstructProps extends Gst.Element_ConstructProps {
// Own constructor properties of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
currentSubsong?: number | null
numLoops?: number | null
}
interface NonstreamAudioDecoder {
// Conflicting properties
object: any
// Own fields of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
element: Gst.Element
sinkpad: Gst.Pad
srcpad: Gst.Pad
upstreamSize: number
loadedMode: boolean
inputDataAdapter: GstBase.Adapter
currentSubsong: number
subsongMode: NonstreamAudioSubsongMode
subsongDuration: Gst.ClockTime
outputMode: NonstreamAudioOutputMode
numLoops: number
outputFormatChanged: boolean
outputAudioInfo: GstAudio.AudioInfo
curPosInSamples: number
numDecodedSamples: number
curSegment: Gst.Segment
discont: boolean
toc: Gst.Toc
allocator: Gst.Allocator
allocationParams: Gst.AllocationParams
mutex: GLib.Mutex
// Owm methods of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
/**
* Allocates an output buffer with the internally configured buffer pool.
*
* This function may only be called from within `load_from_buffer,`
* `load_from_custom,` and `decode`.
* @param size Size of the output buffer, in bytes
*/
allocateOutputBuffer(size: number): Gst.Buffer
/**
* Gets sample format, sample rate, channel count from the allowed srcpad caps.
*
* This is useful for when the subclass wishes to adjust one or more output
* parameters to whatever downstream is supporting. For example, the output
* sample rate is often a freely adjustable value in module players.
*
* This function tries to find a value inside the srcpad peer's caps for
* `format,` `sample_rate,` `num_chnanels` . Any of these can be NULL; they
* (and the corresponding downstream caps) are then skipped while retrieving
* information. Non-fixated caps are fixated first; the value closest to
* their present value is then chosen. For example, if the variables pointed
* to by the arguments are GST_AUDIO_FORMAT_16, 48000 Hz, and 2 channels,
* and the downstream caps are:
*
* "audio/x-raw, format={S16LE,S32LE}, rate=[1,32000], channels=[1,MAX]"
*
* Then `format` and `channels` stay the same, while `sample_rate` is set to 32000 Hz.
* This way, the initial values the the variables pointed to by the arguments
* are set to can be used as default output values. Note that if no downstream
* caps can be retrieved, then this function does nothing, therefore it is
* necessary to ensure that `format,` `sample_rate,` and `channels` have valid
* initial values.
*
* Decoder lock is not held by this function, so it can be called from within
* any of the class vfuncs.
* @param format #GstAudioFormat value to fill with a sample format
* @param sampleRate Integer to fill with a sample rate
* @param numChannels Integer to fill with a channel count
*/
getDownstreamInfo(format: GstAudio.AudioFormat, sampleRate: number, numChannels: number): void
/**
* Reports that a loop has been completed and creates a new appropriate
* segment for the next loop.
*
* `new_position` exists because a loop may not start at the beginning.
*
* This function is only useful for subclasses which can be in the
* GST_NONSTREAM_AUDIO_OUTPUT_MODE_LOOPING output mode, since in the
* GST_NONSTREAM_AUDIO_OUTPUT_MODE_STEADY output mode, this function
* does nothing. See #GstNonstreamAudioOutputMode for more details.
*
* The subclass calls this during playback when it loops. It produces
* a new segment with updated base time and internal time values, to allow
* for seamless looping. It does *not* check the number of elapsed loops;
* this is up the subclass.
*
* Note that if this function is called, then it must be done after the
* last samples of the loop have been decoded and pushed downstream.
*
* This function must be called with the decoder mutex lock held, since it
* is typically called from within `decode` (which in turn are called with
* the lock already held).
* @param newPosition
*/
handleLoop(newPosition: Gst.ClockTime): void
/**
* Sets the output caps by means of a GstAudioInfo structure.
*
* This must be called latest in the first `decode` call, to ensure src caps are
* set before decoded samples are sent downstream. Typically, this is called
* from inside `load_from_buffer` or `load_from_custom`.
*
* This function must be called with the decoder mutex lock held, since it
* is typically called from within the aforementioned vfuncs (which in turn
* are called with the lock already held).
* @param audioInfo Valid audio info structure containing the output format
*/
setOutputFormat(audioInfo: GstAudio.AudioInfo): boolean
/**
* Convenience function; sets the output caps by means of common parameters.
*
* Internally, this fills a GstAudioInfo structure and calls
* gst_nonstream_audio_decoder_set_output_format().
* @param sampleRate Output sample rate to use, in Hz
* @param sampleFormat Output sample format to use
* @param numChannels Number of output channels to use
*/
setOutputFormatSimple(sampleRate: number, sampleFormat: GstAudio.AudioFormat, numChannels: number): boolean
// Conflicting methods
ref(...args: any[]): any
// Class property signals of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
connect(sigName: string, callback: (...args: any[]) => void): number
on(sigName: string, callback: (...args: any[]) => void, after?: boolean): NodeJS.EventEmitter
once(sigName: string, callback: (...args: any[]) => void, after?: boolean): NodeJS.EventEmitter
off(sigName: string, callback: (...args: any[]) => void): NodeJS.EventEmitter
emit(sigName: string, ...args: any[]): void
}
/**
* This base class is for decoders which do not operate on a streaming model.
* That is: they load the encoded media at once, as part of an initialization,
* and afterwards can decode samples (sometimes referred to as "rendering the
* samples").
*
* This sets it apart from GstAudioDecoder, which is a base class for
* streaming audio decoders.
*
* The base class is conceptually a mix between decoder and parser. This is
* unavoidable, since virtually no format that isn't streaming based has a
* clear distinction between parsing and decoding. As a result, this class
* also handles seeking.
*
* Non-streaming audio formats tend to have some characteristics unknown to
* more "regular" bitstreams. These include subsongs and looping.
*
* Subsongs are a set of songs-within-a-song. An analogy would be a multitrack
* recording, where each track is its own song. The first subsong is typically
* the "main" one. Subsongs were popular for video games to enable context-
* aware music; for example, subsong `#0` would be the "main" song, `#1` would be
* an alternate song playing when a fight started, `#2` would be heard during
* conversations etc. The base class is designed to always have at least one
* subsong. If the subclass doesn't provide any, the base class creates a
* "pseudo" subsong, which is actually the whole song.
* Downstream is informed about the subsong using a table of contents (TOC),
* but only if there are at least 2 subsongs.
*
* Looping refers to jumps within the song, typically backwards to the loop
* start (although bi-directional looping is possible). The loop is defined
* by a chronological start and end; once the playback position reaches the
* loop end, it jumps back to the loop start.
* Depending on the subclass, looping may not be possible at all, or it
* may only be possible to enable/disable it (that is, either no looping, or
* an infinite amount of loops), or it may allow for defining a finite number
* of times the loop is repeated.
* Looping can affect output in two ways. Either, the playback position is
* reset to the start of the loop, similar to what happens after a seek event.
* Or, it is not reset, so the pipeline sees playback steadily moving forwards,
* the playback position monotonically increasing. However, seeking must
* always happen within the confines of the defined subsong duration; for
* example, if a subsong is 2 minutes long, steady playback is at 5 minutes
* (because infinite looping is enabled), then seeking will still place the
* position within the 2 minute period.
* Loop count 0 means no looping. Loop count -1 means infinite looping.
* Nonzero positive values indicate how often a loop shall occur.
*
* If the initial subsong and loop count are set to values the subclass does
* not support, the subclass has a chance to correct these values.
* `get_property` then reports the corrected versions.
*
* The base class operates as follows:
* * Unloaded mode
* - Initial values are set. If a current subsong has already been
* defined (for example over the command line with gst-launch), then
* the subsong index is copied over to current_subsong .
* Same goes for the num-loops and output-mode properties.
* Media is NOT loaded yet.
* - Once the sinkpad is activated, the process continues. The sinkpad is
* activated in push mode, and the class accumulates the incoming media
* data in an adapter inside the sinkpad's chain function until either an
* EOS event is received from upstream, or the number of bytes reported
* by upstream is reached. Then it loads the media, and starts the decoder
* output task.
* - If upstream cannot respond to the size query (in bytes) of `load_from_buffer`
* fails, an error is reported, and the pipeline stops.
* - If there are no errors, `load_from_buffer` is called to load the media. The
* subclass must at least call gst_nonstream_audio_decoder_set_output_format()
* there, and is free to make use of the initial subsong, output mode, and
* position. If the actual output mode or position differs from the initial
* value,it must set the initial value to the actual one (for example, if
* the actual starting position is always 0, set *initial_position to 0).
* If loading is unsuccessful, an error is reported, and the pipeline
* stops. Otherwise, the base class calls `get_current_subsong` to retrieve
* the actual current subsong, `get_subsong_duration` to report the current
* subsong's duration in a duration event and message, and `get_subsong_tags`
* to send tags downstream in an event (these functions are optional; if
* set to NULL, the associated operation is skipped). Afterwards, the base
* class switches to loaded mode, and starts the decoder output task.
*
* * Loaded mode</title>
* - Inside the decoder output task, the base class repeatedly calls `decode,`
* which returns a buffer with decoded, ready-to-play samples. If the
* subclass reached the end of playback, `decode` returns FALSE, otherwise
* TRUE.
* - Upon reaching a loop end, subclass either ignores that, or loops back
* to the beginning of the loop. In the latter case, if the output mode is set
* to LOOPING, the subclass must call gst_nonstream_audio_decoder_handle_loop()
* *after* the playback position moved to the start of the loop. In
* STEADY mode, the subclass must *not* call this function.
* Since many decoders only provide a callback for when the looping occurs,
* and that looping occurs inside the decoding operation itself, the following
* mechanism for subclass is suggested: set a flag inside such a callback.
* Then, in the next `decode` call, before doing the decoding, check this flag.
* If it is set, gst_nonstream_audio_decoder_handle_loop() is called, and the
* flag is cleared.
* (This function call is necessary in LOOPING mode because it updates the
* current segment and makes sure the next buffer that is sent downstream
* has its DISCONT flag set.)
* - When the current subsong is switched, `set_current_subsong` is called.
* If it fails, a warning is reported, and nothing else is done. Otherwise,
* it calls `get_subsong_duration` to get the new current subsongs's
* duration, `get_subsong_tags` to get its tags, reports a new duration
* (i.e. it sends a duration event downstream and generates a duration
* message), updates the current segment, and sends the subsong's tags in
* an event downstream. (If `set_current_subsong` has been set to NULL by
* the subclass, attempts to set a current subsong are ignored; likewise,
* if `get_subsong_duration` is NULL, no duration is reported, and if
* `get_subsong_tags` is NULL, no tags are sent downstream.)
* - When an attempt is made to switch the output mode, it is checked against
* the bitmask returned by `get_supported_output_modes`. If the proposed
* new output mode is supported, the current segment is updated
* (it is open-ended in STEADY mode, and covers the (sub)song length in
* LOOPING mode), and the subclass' `set_output_mode` function is called
* unless it is set to NULL. Subclasses should reset internal loop counters
* in this function.
*
* The relationship between (sub)song duration, output mode, and number of loops
* is defined this way (this is all done by the base class automatically):
*
* * Segments have their duration and stop values set to GST_CLOCK_TIME_NONE in
* STEADY mode, and to the duration of the (sub)song in LOOPING mode.
*
* * The duration that is returned to a DURATION query is always the duration
* of the (sub)song, regardless of number of loops or output mode. The same
* goes for DURATION messages and tags.
*
* * If the number of loops is >0 or -1, durations of TOC entries are set to
* the duration of the respective subsong in LOOPING mode and to G_MAXINT64 in
* STEADY mode. If the number of loops is 0, entry durations are set to the
* subsong duration regardless of the output mode.
* @class
*/
class NonstreamAudioDecoder extends Gst.Element {
// Own properties of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
static name: string
static $gtype: GObject.GType<NonstreamAudioDecoder>
// Constructors of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoder
constructor(config?: NonstreamAudioDecoder_ConstructProps)
_init(config?: NonstreamAudioDecoder_ConstructProps): void
}
interface PlanarAudioAdapter_ConstructProps extends GObject.Object_ConstructProps {
}
interface PlanarAudioAdapter {
// Owm methods of GstBadAudio-1.0.GstBadAudio.PlanarAudioAdapter
/**
* Gets the maximum amount of samples available, that is it returns the maximum
* value that can be supplied to gst_planar_audio_adapter_get_buffer() without
* that function returning %NULL.
*/
available(): number
/**
* Removes all buffers from `adapter`.
*/
clear(): void
/**
* Sets up the `adapter` to handle audio data of the specified audio format.
* Note that this will internally clear the adapter and re-initialize it.
* @param info a #GstAudioInfo describing the format of the audio data
*/
configure(info: GstAudio.AudioInfo): void
distanceFromDiscont(): number
/**
* Get the DTS that was on the last buffer with the GST_BUFFER_FLAG_DISCONT
* flag, or GST_CLOCK_TIME_NONE.
*/
dtsAtDiscont(): Gst.ClockTime
/**
* Flushes the first `to_flush` samples in the `adapter`. The caller must ensure
* that at least this many samples are available.
* @param toFlush the number of samples to flush
*/
flush(toFlush: number): void
/**
* Returns a #GstBuffer containing the first `nsamples` of the `adapter,` but
* does not flush them from the adapter.
* Use gst_planar_audio_adapter_take_buffer() for flushing at the same time.
*
* The map `flags` can be used to give an optimization hint to this function.
* When the requested buffer is meant to be mapped only for reading, it might
* be possible to avoid copying memory in some cases.
*
* Caller owns a reference to the returned buffer. gst_buffer_unref() after
* usage.
*
* Free-function: gst_buffer_unref
* @param nsamples the number of samples to get
* @param flags hint the intended use of the returned buffer
*/
getBuffer(nsamples: number, flags: Gst.MapFlags): Gst.Buffer | null
/**
* Get the offset that was on the last buffer with the GST_BUFFER_FLAG_DISCONT
* flag, or GST_BUFFER_OFFSET_NONE.
*/
offsetAtDiscont(): number
/**
* Get the dts that was before the current sample in the adapter. When
* `distance` is given, the amount of bytes between the dts and the current
* position is returned.
*
* The dts is reset to GST_CLOCK_TIME_NONE and the distance is set to 0 when
* the adapter is first created or when it is cleared. This also means that
* before the first sample with a dts is removed from the adapter, the dts
* and distance returned are GST_CLOCK_TIME_NONE and 0 respectively.
*/
prevDts(): [ /* returnType */ Gst.ClockTime, /* distance */ number ]
/**
* Get the offset that was before the current sample in the adapter. When
* `distance` is given, the amount of samples between the offset and the current
* position is returned.
*
* The offset is reset to GST_BUFFER_OFFSET_NONE and the distance is set to 0
* when the adapter is first created or when it is cleared. This also means that
* before the first sample with an offset is removed from the adapter, the
* offset and distance returned are GST_BUFFER_OFFSET_NONE and 0 respectively.
*/
prevOffset(): [ /* returnType */ number, /* distance */ number ]
/**
* Get the pts that was before the current sample in the adapter. When
* `distance` is given, the amount of samples between the pts and the current
* position is returned.
*
* The pts is reset to GST_CLOCK_TIME_NONE and the distance is set to 0 when
* the adapter is first created or when it is cleared. This also means that before
* the first sample with a pts is removed from the adapter, the pts
* and distance returned are GST_CLOCK_TIME_NONE and 0 respectively.
*/
prevPts(): [ /* returnType */ Gst.ClockTime, /* distance */ number ]
/**
* Get the PTS that was on the last buffer with the GST_BUFFER_FLAG_DISCONT
* flag, or GST_CLOCK_TIME_NONE.
*/
ptsAtDiscont(): Gst.ClockTime
/**
* Adds the data from `buf` to the data stored inside `adapter` and takes
* ownership of the buffer.
* @param buf a #GstBuffer to queue in the adapter
*/
push(buf: Gst.Buffer): void
/**
* Returns a #GstBuffer containing the first `nsamples` bytes of the
* `adapter`. The returned bytes will be flushed from the adapter.
*
* See gst_planar_audio_adapter_get_buffer() for more details.
*
* Caller owns a reference to the returned buffer. gst_buffer_unref() after
* usage.
*
* Free-function: gst_buffer_unref
* @param nsamples the number of samples to take
* @param flags hint the intended use of the returned buffer
*/
takeBuffer(nsamples: number, flags: Gst.MapFlags): Gst.Buffer | null
// Class property signals of GstBadAudio-1.0.GstBadAudio.PlanarAudioAdapter
connect(sigName: string, callback: (...args: any[]) => void): number
on(sigName: string, callback: (...args: any[]) => void, after?: boolean): NodeJS.EventEmitter
once(sigName: string, callback: (...args: any[]) => void, after?: boolean): NodeJS.EventEmitter
off(sigName: string, callback: (...args: any[]) => void): NodeJS.EventEmitter
emit(sigName: string, ...args: any[]): void
}
/**
* This class is similar to GstAdapter, but it is made to work with
* non-interleaved (planar) audio buffers. Before using, an audio format
* must be configured with gst_planar_audio_adapter_configure()
* @class
*/
class PlanarAudioAdapter extends GObject.Object {
// Own properties of GstBadAudio-1.0.GstBadAudio.PlanarAudioAdapter
static name: string
static $gtype: GObject.GType<PlanarAudioAdapter>
// Constructors of GstBadAudio-1.0.GstBadAudio.PlanarAudioAdapter
constructor(config?: PlanarAudioAdapter_ConstructProps)
/**
* Creates a new #GstPlanarAudioAdapter. Free with g_object_unref().
* @constructor
*/
constructor()
/**
* Creates a new #GstPlanarAudioAdapter. Free with g_object_unref().
* @constructor
*/
static new(): PlanarAudioAdapter
_init(config?: PlanarAudioAdapter_ConstructProps): void
}
interface NonstreamAudioDecoderClass {
// Own fields of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoderClass
/**
* The parent class structure
* @field
*/
elementClass: Gst.ElementClass
loadsFromSinkpad: boolean
seek: (dec: NonstreamAudioDecoder, newPosition: Gst.ClockTime) => boolean
tell: (dec: NonstreamAudioDecoder) => Gst.ClockTime
loadFromBuffer: (dec: NonstreamAudioDecoder, sourceData: Gst.Buffer, initialSubsong: number, initialSubsongMode: NonstreamAudioSubsongMode, initialPosition: Gst.ClockTime, initialOutputMode: NonstreamAudioOutputMode, initialNumLoops: number) => boolean
loadFromCustom: (dec: NonstreamAudioDecoder, initialSubsong: number, initialSubsongMode: NonstreamAudioSubsongMode, initialPosition: Gst.ClockTime, initialOutputMode: NonstreamAudioOutputMode, initialNumLoops: number) => boolean
getMainTags: (dec: NonstreamAudioDecoder) => Gst.TagList
setCurrentSubsong: (dec: NonstreamAudioDecoder, subsong: number, initialPosition: Gst.ClockTime) => boolean
getCurrentSubsong: (dec: NonstreamAudioDecoder) => number
getNumSubsongs: (dec: NonstreamAudioDecoder) => number
getSubsongDuration: (dec: NonstreamAudioDecoder, subsong: number) => Gst.ClockTime
getSubsongTags: (dec: NonstreamAudioDecoder, subsong: number) => Gst.TagList
setSubsongMode: (dec: NonstreamAudioDecoder, mode: NonstreamAudioSubsongMode, initialPosition: Gst.ClockTime) => boolean
setNumLoops: (dec: NonstreamAudioDecoder, numLoops: number) => boolean
getNumLoops: (dec: NonstreamAudioDecoder) => number
getSupportedOutputModes: (dec: NonstreamAudioDecoder) => number
setOutputMode: (dec: NonstreamAudioDecoder, mode: NonstreamAudioOutputMode, currentPosition: Gst.ClockTime) => boolean
decode: (dec: NonstreamAudioDecoder, buffer: Gst.Buffer, numSamples: number) => boolean
negotiate: (dec: NonstreamAudioDecoder) => boolean
decideAllocation: (dec: NonstreamAudioDecoder, query: Gst.Query) => boolean
proposeAllocation: (dec: NonstreamAudioDecoder, query: Gst.Query) => boolean
}
/**
* Subclasses can override any of the available optional virtual methods or not, as
* needed. At minimum, `load_from_buffer` (or `load_from_custom)`, `get_supported_output_modes,`
* and `decode` need to be overridden.
*
* All functions are called with a locked decoder mutex.
*
* > If GST_ELEMENT_ERROR, GST_ELEMENT_WARNING, or GST_ELEMENT_INFO are called from
* > inside one of these functions, it is strongly recommended to unlock the decoder mutex
* > before and re-lock it after these macros to prevent potential deadlocks in case the
* > application does something with the element when it receives an ERROR/WARNING/INFO
* > message. Same goes for gst_element_post_message() calls and non-serialized events.
*
* By default, this class works by reading media data from the sinkpad, and then commencing
* playback. Some decoders cannot be given data from a memory block, so the usual way of
* reading all upstream data and passing it to `load_from_buffer` doesn't work then. In this case,
* set the value of loads_from_sinkpad to FALSE. This changes the way this class operates;
* it does not require a sinkpad to exist anymore, and will call `load_from_custom` instead.
* One example of a decoder where this makes sense is UADE (Unix Amiga Delitracker Emulator).
* For some formats (such as TFMX), it needs to do the file loading by itself.
* Since most decoders can read input data from a memory block, the default value of
* loads_from_sinkpad is TRUE.
* @record
*/
abstract class NonstreamAudioDecoderClass {
// Own properties of GstBadAudio-1.0.GstBadAudio.NonstreamAudioDecoderClass
static name: string
}
interface PlanarAudioAdapterClass {
}
abstract class PlanarAudioAdapterClass {
// Own properties of GstBadAudio-1.0.GstBadAudio.PlanarAudioAdapterClass
static name: string
}
}
export default GstBadAudio;