16b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner/* 26b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * Copyright (C) 2010, Google Inc. All rights reserved. 36b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * 46b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * Redistribution and use in source and binary forms, with or without 56b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * modification, are permitted provided that the following conditions 66b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * are met: 76b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * 1. Redistributions of source code must retain the above copyright 86b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * notice, this list of conditions and the following disclaimer. 96b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * 2. Redistributions in binary form must reproduce the above copyright 106b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * notice, this list of conditions and the following disclaimer in the 116b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * documentation and/or other materials provided with the distribution. 126b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * 136b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 146b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 156b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 166b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 176b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 186b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 196b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 206b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 216b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 226b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 236b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner */ 246b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 256b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#include "config.h" 266b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 276b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#if ENABLE(WEB_AUDIO) 286b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 296b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#include "V8AudioContext.h" 306b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 312fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "ArrayBuffer.h" 322fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "AudioBuffer.h" 336b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#include "AudioContext.h" 346b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#include "Frame.h" 352fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "V8ArrayBuffer.h" 362fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "V8AudioBuffer.h" 372fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "V8Binding.h" 386b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#include "V8Proxy.h" 396b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 406b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brennernamespace WebCore { 416b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 426b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brennerv8::Handle<v8::Value> V8AudioContext::constructorCallback(const v8::Arguments& args) 436b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner{ 446b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner INC_STATS("DOM.AudioContext.Contructor"); 456b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 466b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner Frame* frame = V8Proxy::retrieveFrameForCurrentContext(); 476b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner if (!frame) 486b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner return throwError("AudioContext constructor associated frame is unavailable", V8Proxy::ReferenceError); 496b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 506b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner Document* document = frame->document(); 516b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner if (!document) 526b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner return throwError("AudioContext constructor associated document is unavailable", V8Proxy::ReferenceError); 536b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 542daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch RefPtr<AudioContext> audioContext; 552daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 562daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!args.Length()) { 572daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // Constructor for default AudioContext which talks to audio hardware. 582daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch audioContext = AudioContext::create(document); 592daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch } else { 602daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // Constructor for offline (render-target) AudioContext which renders into an AudioBuffer. 612daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // new AudioContext(in unsigned long numberOfChannels, in unsigned long numberOfFrames, in float sampleRate); 622daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (args.Length() < 3) 632daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return throwError("Not enough arguments", V8Proxy::SyntaxError); 642daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 652daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch bool ok = false; 662daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 672daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch unsigned numberOfChannels = toInt32(args[0], ok); 682daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!ok) 692daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return throwError("Invalid number of channels", V8Proxy::SyntaxError); 702daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 712daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch unsigned numberOfFrames = toInt32(args[1], ok); 722daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!ok) 732daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return throwError("Invalid number of frames", V8Proxy::SyntaxError); 742daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 752daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch float sampleRate = toFloat(args[2]); 762daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 772daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch audioContext = AudioContext::createOfflineContext(document, numberOfChannels, numberOfFrames, sampleRate); 782daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch } 792daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 802daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch if (!audioContext.get()) 812daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch return throwError("Error creating AudioContext", V8Proxy::SyntaxError); 826b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 836b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner // Transform the holder into a wrapper object for the audio context. 846b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner V8DOMWrapper::setDOMWrapper(args.Holder(), &info, audioContext.get()); 856b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner audioContext->ref(); 866b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 876b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner return args.Holder(); 886b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner} 896b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 902fc2651226baac27029e38c9d6ef883fa32084dbSteve Blockv8::Handle<v8::Value> V8AudioContext::createBufferCallback(const v8::Arguments& args) 912fc2651226baac27029e38c9d6ef883fa32084dbSteve Block{ 922fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (args.Length() < 2) 932fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Not enough arguments", V8Proxy::SyntaxError); 942fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 952fc2651226baac27029e38c9d6ef883fa32084dbSteve Block AudioContext* audioContext = toNative(args.Holder()); 962fc2651226baac27029e38c9d6ef883fa32084dbSteve Block ASSERT(audioContext); 972fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 982fc2651226baac27029e38c9d6ef883fa32084dbSteve Block v8::Handle<v8::Value> arg = args[0]; 992fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1002fc2651226baac27029e38c9d6ef883fa32084dbSteve Block // AudioBuffer createBuffer(in ArrayBuffer buffer, in boolean mixToMono); 1012fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (V8ArrayBuffer::HasInstance(arg)) { 1022fc2651226baac27029e38c9d6ef883fa32084dbSteve Block v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(arg); 1032fc2651226baac27029e38c9d6ef883fa32084dbSteve Block ArrayBuffer* arrayBuffer = V8ArrayBuffer::toNative(object); 1042fc2651226baac27029e38c9d6ef883fa32084dbSteve Block ASSERT(arrayBuffer); 1052fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1062fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (arrayBuffer) { 1072fc2651226baac27029e38c9d6ef883fa32084dbSteve Block bool mixToMono = args[1]->ToBoolean()->Value(); 1082fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1092fc2651226baac27029e38c9d6ef883fa32084dbSteve Block RefPtr<AudioBuffer> audioBuffer = audioContext->createBuffer(arrayBuffer, mixToMono); 1102fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (!audioBuffer.get()) 1112fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Error decoding audio file data", V8Proxy::SyntaxError); 1122fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1132fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return toV8(audioBuffer.get()); 1142fc2651226baac27029e38c9d6ef883fa32084dbSteve Block } 1152fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1162fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return v8::Undefined(); 1172fc2651226baac27029e38c9d6ef883fa32084dbSteve Block } 1182fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1192fc2651226baac27029e38c9d6ef883fa32084dbSteve Block // AudioBuffer createBuffer(in unsigned long numberOfChannels, in unsigned long numberOfFrames, in float sampleRate); 1202fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (args.Length() < 3) 1212fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Not enough arguments", V8Proxy::SyntaxError); 1222fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1232fc2651226baac27029e38c9d6ef883fa32084dbSteve Block bool ok = false; 1242fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1252fc2651226baac27029e38c9d6ef883fa32084dbSteve Block unsigned numberOfChannels = toInt32(args[0], ok); 1262fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (!ok) 1272fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Invalid number of channels", V8Proxy::SyntaxError); 1282fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1292fc2651226baac27029e38c9d6ef883fa32084dbSteve Block unsigned numberOfFrames = toInt32(args[1], ok); 1302fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (!ok) 1312fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Invalid number of frames", V8Proxy::SyntaxError); 1322fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1332fc2651226baac27029e38c9d6ef883fa32084dbSteve Block float sampleRate = toFloat(args[2]); 1342fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1352fc2651226baac27029e38c9d6ef883fa32084dbSteve Block RefPtr<AudioBuffer> audioBuffer = audioContext->createBuffer(numberOfChannels, numberOfFrames, sampleRate); 1362fc2651226baac27029e38c9d6ef883fa32084dbSteve Block if (!audioBuffer.get()) 1372fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return throwError("Error creating AudioBuffer", V8Proxy::SyntaxError); 1382fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1392fc2651226baac27029e38c9d6ef883fa32084dbSteve Block return toV8(audioBuffer.get()); 1402fc2651226baac27029e38c9d6ef883fa32084dbSteve Block} 1412fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1426b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner} // namespace WebCore 1436b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 1446b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner#endif // ENABLE(WEB_AUDIO) 145