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webaudio/src/cpp/audio-buffer-source-node.cpp at master · node-3d/webaudio · GitHub
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#
include
"
audio-scheduled-source-node.hpp
"
#
include
"
audio-buffer-source-node.hpp
"
#
include
"
audio-context.hpp
"
#
include
"
audio-param.hpp
"
#
include
"
audio-buffer.hpp
"
IMPLEMENT_ES5_CLASS
(AudioBufferSourceNode);
void
AudioBufferSourceNode::init
(Napi::Env env, Napi::Object exports) {
Napi::Function ctor =
wrap
(env);
JS_ASSIGN_SETTER
(loopEnd);
JS_ASSIGN_SETTER
(loopStart);
JS_ASSIGN_SETTER
(loop);
JS_ASSIGN_SETTER
(buffer);
JS_ASSIGN_METHOD
(start);
JS_ASSIGN_GETTER
(detune);
JS_ASSIGN_GETTER
(playbackRate);
JS_ASSIGN_METHOD
(destroy);
exports.
Set
(
"
AudioBufferSourceNode
"
, ctor);
}
AudioBufferSourceNode::AudioBufferSourceNode
(
const
Napi::CallbackInfo &info)
: CommonNode(info.This(), "AudioBufferSourceNode") {
NAPI_ENV
;
_isLooping =
false
;
_loopStart =
0
;
_loopEnd =
0
;
Napi::Object context = info[
0
].
As
<Napi::Object>();
Napi::Function paramCtor = info[
1
].
As
<Napi::Function>();
Napi::Object opts = info[
2
].
As
<Napi::Object>();
AudioContext *contextUnwrap =
AudioContext::unwrap
(context);
lab::AudioContext *contextLab = contextUnwrap->
getCtx
().
get
();
reset
(context, std::make_shared<lab::SampledAudioNode>(*contextLab));
lab::SampledAudioNode *node =
static_cast
<lab::SampledAudioNode *>(_impl.
get
());
napi_value argv[
2
];
argv[
0
] = context;
ParamPtr playbackRateParam = node->
playbackRate
();
argv[
1
] =
JS_EXT
(&playbackRateParam);
_playbackRate.
Reset
(paramCtor.
New
(
2
, argv),
1
);
ParamPtr detuneParam = node->
detune
();
argv[
1
] =
JS_EXT
(&detuneParam);
_detune.
Reset
(paramCtor.
New
(
2
, argv),
1
);
argv[
1
] =
JS_EXT
(&_impl);
super
(info,
2
, argv);
}
AudioBufferSourceNode::~AudioBufferSourceNode
() {
_destroy
();
}
void
AudioBufferSourceNode::_destroy
() {
DES_CHECK
;
_buffer.
Reset
();
_playbackRate.
Reset
();
_detune.
Reset
();
_isDestroyed =
true
;
CommonNode::_destroy
();
}
JS_IMPLEMENT_METHOD
(AudioBufferSourceNode, start) {
THIS_CHECK
;
LET_DOUBLE_ARG
(
0
, when);
lab::SampledAudioNode *node =
static_cast
<lab::SampledAudioNode *>(_impl.
get
());
if
(_isLooping) {
if
(_loopEnd > _loopStart) {
node->
start
(when, _loopStart, _loopEnd - _loopStart, -
1
);
}
else
{
node->
start
(when, _loopStart, -
1
);
}
}
else
{
node->
start
(when);
}
RET_UNDEFINED
;
}
JS_IMPLEMENT_METHOD
(AudioBufferSourceNode, schedule) {
THIS_CHECK
;
LET_DOUBLE_ARG
(
0
, when);
lab::SampledAudioNode *node =
static_cast
<lab::SampledAudioNode *>(_impl.
get
());
if
(_isLooping) {
if
(_loopEnd > _loopStart) {
node->
schedule
(when, _loopStart, _loopEnd - _loopStart, -
1
);
}
else
{
node->
schedule
(when, _loopStart, -
1
);
}
}
else
{
node->
schedule
(when);
}
RET_UNDEFINED
;
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, buffer) {
THIS_CHECK
;
RET_VALUE
(_buffer.
Value
());
}
JS_IMPLEMENT_SETTER
(AudioBufferSourceNode, buffer) {
THIS_CHECK
;
SETTER_OBJ_ARG
;
_buffer.
Reset
(v,
1
);
Napi::Object context = _context.
Value
();
AudioContext *audioContext =
AudioContext::unwrap
(context);
lab::AudioContext *ctx = audioContext->
getCtx
().
get
();
lab::ContextRenderLock
r
(ctx,
"
AudioBufferSourceNode::bufferSetter
"
);
AudioBuffer *audioBuffer =
AudioBuffer::unwrap
(v);
BusPtr bus = audioBuffer->
getBus
();
lab::SampledAudioNode *node =
static_cast
<lab::SampledAudioNode *>(_impl.
get
());
node->
setBus
(r, bus);
emit
(
"
buffer
"
,
1
, &value);
RET_UNDEFINED
;
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, playbackRate) {
THIS_CHECK
;
RET_VALUE
(_playbackRate.
Value
());
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, detune) {
THIS_CHECK
;
RET_VALUE
(_detune.
Value
());
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, loop) {
THIS_CHECK
;
RET_BOOL
(_isLooping);
}
JS_IMPLEMENT_SETTER
(AudioBufferSourceNode, loop) {
THIS_CHECK
;
SETTER_BOOL_ARG
;
_isLooping = v;
RET_UNDEFINED
;
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, loopStart) {
THIS_CHECK
;
RET_NUM
(_loopStart);
}
JS_IMPLEMENT_SETTER
(AudioBufferSourceNode, loopStart) {
THIS_CHECK
;
SETTER_DOUBLE_ARG
;
_loopStart = v;
RET_UNDEFINED
;
}
JS_IMPLEMENT_GETTER
(AudioBufferSourceNode, loopEnd) {
THIS_CHECK
;
RET_NUM
(_loopEnd);
}
JS_IMPLEMENT_SETTER
(AudioBufferSourceNode, loopEnd) {
THIS_CHECK
;
SETTER_DOUBLE_ARG
;
_loopEnd = v;
RET_UNDEFINED
;
}
JS_IMPLEMENT_METHOD
(AudioBufferSourceNode, destroy) {
THIS_CHECK
;
emit
(
"
destroy
"
);
_destroy
();
RET_UNDEFINED
;
}
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