Microphone support for Pepper Flash.

[Committing for pbrophy@adobe.com. Original review:
http://codereview.chromium.org/8138008/ .]

This change supports audio capture from the microphone and supplies the data
through a Pepper interface. Its enumeration is limited to the default audio
device that uses mono 44.1kHz.

TBR=tony@chromium.org

Review URL: http://codereview.chromium.org/8574029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110587 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 92 insertions, 0 deletions

diff --git a/ppapi/cpp/dev/audio_input_dev.cc b/ppapi/cpp/dev/audio_input_dev.cc
new file mode 100644
index 0000000..fd81945
--- /dev/null
+++ b/ppapi/cpp/dev/audio_input_dev.cc
@@ -0,0 +1,44 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/cpp/dev/audio_input_dev.h"
+
+#include "ppapi/c/dev/ppb_audio_input_dev.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_AudioInput_Dev>() {
+  return PPB_AUDIO_INPUT_DEV_INTERFACE;
+}
+
+}  // namespace
+
+AudioInput_Dev::AudioInput_Dev(Instance* instance,
+                               const AudioConfig& config,
+                               PPB_AudioInput_Callback callback,
+                               void* user_data)
+    : config_(config) {
+  if (has_interface<PPB_AudioInput_Dev>()) {
+    PassRefFromConstructor(get_interface<PPB_AudioInput_Dev>()->Create(
+        instance->pp_instance(), config.pp_resource(), callback, user_data));
+  }
+}
+
+bool AudioInput_Dev::StartCapture() {
+  return has_interface<PPB_AudioInput_Dev>() &&
+      get_interface<PPB_AudioInput_Dev>()->StartCapture(pp_resource());
+}
+
+bool AudioInput_Dev::StopCapture() {
+  return has_interface<PPB_AudioInput_Dev>() &&
+      get_interface<PPB_AudioInput_Dev>()->StopCapture(pp_resource());
+}
+
+}  // namespace pp
diff --git a/ppapi/cpp/dev/audio_input_dev.h b/ppapi/cpp/dev/audio_input_dev.h
new file mode 100644
index 0000000..2a51eb7
--- /dev/null
+++ b/ppapi/cpp/dev/audio_input_dev.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_CPP_DEV_AUDIO_INPUT_DEV_H_
+#define PPAPI_CPP_DEV_AUDIO_INPUT_DEV_H_
+
+#include "ppapi/c/dev/ppb_audio_input_dev.h"
+#include "ppapi/cpp/audio_config.h"
+#include "ppapi/cpp/resource.h"
+
+namespace pp {
+
+class Instance;
+
+class AudioInput_Dev : public Resource {
+ public:
+  /// An empty constructor for an AudioInput resource.
+  AudioInput_Dev() {}
+
+  AudioInput_Dev(Instance* instance,
+                 const AudioConfig& config,
+                 PPB_AudioInput_Callback callback,
+                 void* user_data);
+
+  /// Getter function for returning the internal <code>PPB_AudioConfig</code>
+  /// struct.
+  ///
+  /// @return A mutable reference to the PPB_AudioConfig struct.
+  AudioConfig& config() { return config_; }
+
+  /// Getter function for returning the internal <code>PPB_AudioConfig</code>
+  /// struct.
+  ///
+  /// @return A const reference to the internal <code>PPB_AudioConfig</code>
+  /// struct.
+  const AudioConfig& config() const { return config_; }
+
+  bool StartCapture();
+  bool StopCapture();
+
+ private:
+  AudioConfig config_;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_DEV_AUDIO_INPUT_DEV_H_