Revert 110602 - Revert 110587 - Microphone support for Pepper Flash.

[I think the Windows shared builders just need to be clobbered.]

[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

TBR=viettrungluu@chromium.org
Review URL: http://codereview.chromium.org/8569003

TBR=ajwong@chromium.org
Review URL: http://codereview.chromium.org/8561003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110609 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 147 insertions, 0 deletions

diff --git a/ppapi/api/dev/ppb_audio_input_dev.idl b/ppapi/api/dev/ppb_audio_input_dev.idl
new file mode 100644
index 0000000..ba6b578
--- /dev/null
+++ b/ppapi/api/dev/ppb_audio_input_dev.idl
@@ -0,0 +1,94 @@
+/* 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.
+ */
+
+/**
+ * This file defines the <code>PPB_AudioInput_Dev</code> interface, which
+ * provides realtime audio input capture.
+ */
+
+label Chrome {
+  M17 = 0.1
+};
+
+/**
+ * <code>PPB_AudioInput_Callback</code> defines the type of an audio callback
+ * function used to provide the audio buffer with data. This callback will be
+ * called on a separate thread to the creation thread.
+ */
+typedef void PPB_AudioInput_Callback([out] mem_t sample_buffer,
+                                     [in] uint32_t buffer_size_in_bytes,
+                                     [inout] mem_t user_data);
+
+/**
+ * The <code>PPB_AudioInput_Dev</code> interface contains pointers to several
+ * functions for handling audio input resources.
+ */
+[version=0.1, macro="PPB_AUDIO_INPUT_DEV_INTERFACE"]
+interface PPB_AudioInput_Dev {
+  /**
+   * Create is a pointer to a function that creates an audio input resource.
+   * No sound will be captured until StartCapture() is called.
+   */
+  PP_Resource Create(
+      [in] PP_Instance instance,
+      [in] PP_Resource config,
+      [in] PPB_AudioInput_Callback audio_input_callback,
+      [inout] mem_t user_data);
+
+  /**
+   * IsAudioInput is a pointer to a function that determines if the given
+   * resource is an audio input resource.
+   *
+   * @param[in] resource A PP_Resource containing a resource.
+   *
+   * @return A PP_BOOL containing containing PP_TRUE if the given resource is
+   * an audio input resource, otherwise PP_FALSE.
+   */
+  PP_Bool IsAudioInput(
+      [in] PP_Resource audio_input);
+
+  /**
+   * GetCurrrentConfig() returns an audio config resource for the given audio
+   * resource.
+   *
+   * @param[in] config A <code>PP_Resource</code> corresponding to an audio
+   * resource.
+   *
+   * @return A <code>PP_Resource</code> containing the audio config resource if
+   * successful.
+   */
+  PP_Resource GetCurrentConfig(
+      [in] PP_Resource audio_input);
+
+  /**
+   * StartCapture() starts the capture of the audio input resource and begins
+   * periodically calling the callback.
+   *
+   * @param[in] config A <code>PP_Resource</code> corresponding to an audio
+   * input resource.
+   *
+   * @return A <code>PP_Bool</code> containing <code>PP_TRUE</code> if
+   * successful, otherwise <code>PP_FALSE</code>. Also returns
+   * <code>PP_TRUE</code> (and be a no-op) if called while callback is already
+   * in progress.
+   */
+  PP_Bool StartCapture(
+      [in] PP_Resource audio_input);
+
+  /**
+   * StopCapture is a pointer to a function that stops the capture of
+   * the audio input resource.
+   *
+   * @param[in] config A PP_Resource containing the audio input resource.
+   *
+   * @return A PP_BOOL containing PP_TRUE if successful, otherwise PP_FALSE.
+   * Also returns PP_TRUE (and is a no-op) if called while capture is already
+   * stopped. If a buffer is being captured, StopCapture will block until the
+   * call completes.
+   */
+  PP_Bool StopCapture(
+      [in] PP_Resource audio_input);
+};
+
diff --git a/ppapi/api/trusted/ppb_audio_input_trusted_dev.idl b/ppapi/api/trusted/ppb_audio_input_trusted_dev.idl
new file mode 100644
index 0000000..860c2e3
--- /dev/null
+++ b/ppapi/api/trusted/ppb_audio_input_trusted_dev.idl
@@ -0,0 +1,53 @@
+/* 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.
+ */
+/**
+ * This file defines the trusted audio input interface.
+ */
+
+label Chrome {
+  M17 = 0.1
+};
+
+/**
+ * This interface is to be used by proxy implementations.  All
+ * functions should be called from the main thread only.  The
+ * resource returned is an Audio input esource; most of the PPB_Audio
+ * interface is also usable on this resource.
+ */
+[version=0.1, macro="PPB_AUDIO_INPUT_TRUSTED_DEV_INTERFACE"]
+interface PPB_AudioInputTrusted_Dev {
+  /** Returns an audio input resource. */
+  PP_Resource CreateTrusted(
+      [in] PP_Instance instance);
+
+  /**
+   * Opens a paused audio interface, used by trusted side of proxy.
+   * Returns PP_ERROR_WOULD_BLOCK on success, and invokes
+   * the |create_callback| asynchronously to complete.
+   * As this function should always be invoked from the main thread,
+   * do not use the blocking variant of PP_CompletionCallback.
+   */
+  int32_t Open(
+      [in] PP_Resource audio_input,
+      [in] PP_Resource config,
+      [in] PP_CompletionCallback create_callback);
+
+  /**
+   * Get the sync socket.  Use once Open has completed.
+   * Returns PP_OK on success.
+   */
+  int32_t GetSyncSocket(
+      [in] PP_Resource audio_input,
+      [out] handle_t sync_socket);
+
+  /**
+   * Get the shared memory interface.  Use once Open has completed.
+   * Returns PP_OK on success.
+   */
+  int32_t GetSharedMemory(
+      [in] PP_Resource audio_input,
+      [out] handle_t shm_handle,
+      [out] uint32_t shm_size);
+};