1 files changed, 149 insertions, 0 deletions
diff --git a/dom/media/webaudio/WebAudioUtils.cpp b/dom/media/webaudio/WebAudioUtils.cpp
new file mode 100644
index 0000000000..699f397532
--- /dev/null
+++ b/dom/media/webaudio/WebAudioUtils.cpp
@@ -0,0 +1,149 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebAudioUtils.h"
+#include "AudioNodeTrack.h"
+#include "blink/HRTFDatabaseLoader.h"
+
+#include "nsComponentManagerUtils.h"
+#include "nsContentUtils.h"
+#include "nsIConsoleService.h"
+#include "nsIScriptError.h"
+#include "nsJSUtils.h"
+#include "nsServiceManagerUtils.h"
+#include "AudioEventTimeline.h"
+
+#include "mozilla/SchedulerGroup.h"
+
+namespace mozilla {
+
+LazyLogModule gWebAudioAPILog("WebAudioAPI");
+
+namespace dom {
+
+void WebAudioUtils::ConvertAudioTimelineEventToTicks(AudioTimelineEvent& aEvent,
+                                                     AudioNodeTrack* aDest) {
+  aEvent.SetTimeInTicks(
+      aDest->SecondsToNearestTrackTime(aEvent.Time<double>()));
+  aEvent.mTimeConstant *= aDest->mSampleRate;
+  aEvent.mDuration *= aDest->mSampleRate;
+}
+
+void WebAudioUtils::Shutdown() { WebCore::HRTFDatabaseLoader::shutdown(); }
+
+int WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler,
+                                         uint32_t aChannel, const float* aIn,
+                                         uint32_t* aInLen, float* aOut,
+                                         uint32_t* aOutLen) {
+#ifdef MOZ_SAMPLE_TYPE_S16
+  AutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 4> tmp1;
+  AutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 4> tmp2;
+  tmp1.SetLength(*aInLen);
+  tmp2.SetLength(*aOutLen);
+  ConvertAudioSamples(aIn, tmp1.Elements(), *aInLen);
+  int result = speex_resampler_process_int(
+      aResampler, aChannel, tmp1.Elements(), aInLen, tmp2.Elements(), aOutLen);
+  ConvertAudioSamples(tmp2.Elements(), aOut, *aOutLen);
+  return result;
+#else
+  return speex_resampler_process_float(aResampler, aChannel, aIn, aInLen, aOut,
+                                       aOutLen);
+#endif
+}
+
+int WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler,
+                                         uint32_t aChannel, const int16_t* aIn,
+                                         uint32_t* aInLen, float* aOut,
+                                         uint32_t* aOutLen) {
+  AutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 4> tmp;
+#ifdef MOZ_SAMPLE_TYPE_S16
+  tmp.SetLength(*aOutLen);
+  int result = speex_resampler_process_int(aResampler, aChannel, aIn, aInLen,
+                                           tmp.Elements(), aOutLen);
+  ConvertAudioSamples(tmp.Elements(), aOut, *aOutLen);
+  return result;
+#else
+  tmp.SetLength(*aInLen);
+  ConvertAudioSamples(aIn, tmp.Elements(), *aInLen);
+  int result = speex_resampler_process_float(
+      aResampler, aChannel, tmp.Elements(), aInLen, aOut, aOutLen);
+  return result;
+#endif
+}
+
+int WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler,
+                                         uint32_t aChannel, const int16_t* aIn,
+                                         uint32_t* aInLen, int16_t* aOut,
+                                         uint32_t* aOutLen) {
+#ifdef MOZ_SAMPLE_TYPE_S16
+  return speex_resampler_process_int(aResampler, aChannel, aIn, aInLen, aOut,
+                                     aOutLen);
+#else
+  AutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 4> tmp1;
+  AutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 4> tmp2;
+  tmp1.SetLength(*aInLen);
+  tmp2.SetLength(*aOutLen);
+  ConvertAudioSamples(aIn, tmp1.Elements(), *aInLen);
+  int result = speex_resampler_process_float(
+      aResampler, aChannel, tmp1.Elements(), aInLen, tmp2.Elements(), aOutLen);
+  ConvertAudioSamples(tmp2.Elements(), aOut, *aOutLen);
+  return result;
+#endif
+}
+
+void WebAudioUtils::LogToDeveloperConsole(uint64_t aWindowID,
+                                          const char* aKey) {
+  // This implementation is derived from dom/media/VideoUtils.cpp, but we
+  // use a windowID so that the message is delivered to the developer console.
+  // It is similar to ContentUtils::ReportToConsole, but also works off main
+  // thread.
+  if (!NS_IsMainThread()) {
+    nsCOMPtr<nsIRunnable> task = NS_NewRunnableFunction(
+        "dom::WebAudioUtils::LogToDeveloperConsole",
+        [aWindowID, aKey] { LogToDeveloperConsole(aWindowID, aKey); });
+    SchedulerGroup::Dispatch(TaskCategory::Other, task.forget());
+    return;
+  }
+
+  nsCOMPtr<nsIConsoleService> console(
+      do_GetService("@mozilla.org/consoleservice;1"));
+  if (!console) {
+    NS_WARNING("Failed to log message to console.");
+    return;
+  }
+
+  nsAutoString spec;
+  uint32_t aLineNumber = 0, aColumnNumber = 0;
+  JSContext* cx = nsContentUtils::GetCurrentJSContext();
+  if (cx) {
+    nsJSUtils::GetCallingLocation(cx, spec, &aLineNumber, &aColumnNumber);
+  }
+
+  nsresult rv;
+  nsCOMPtr<nsIScriptError> errorObject =
+      do_CreateInstance(NS_SCRIPTERROR_CONTRACTID, &rv);
+  if (!errorObject) {
+    NS_WARNING("Failed to log message to console.");
+    return;
+  }
+
+  nsAutoString result;
+  rv = nsContentUtils::GetLocalizedString(nsContentUtils::eDOM_PROPERTIES, aKey,
+                                          result);
+
+  if (NS_FAILED(rv)) {
+    NS_WARNING("Failed to log message to console.");
+    return;
+  }
+
+  errorObject->InitWithWindowID(result, spec, u""_ns, aLineNumber,
+                                aColumnNumber, nsIScriptError::warningFlag,
+                                "Web Audio", aWindowID);
+  console->LogMessage(errorObject);
+}
+
+}  // namespace dom
+}  // namespace mozilla