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// Copyright (c) 2012 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 <vector>
#include "ppapi/c/dev/ppb_audio_input_dev.h"
#include "ppapi/cpp/audio_config.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/dev/device_ref_dev.h"
#include "ppapi/cpp/resource.h"
namespace pp {
class InstanceHandle;
class AudioInput_Dev : public Resource {
public:
/// An empty constructor for an AudioInput resource.
AudioInput_Dev();
/// This constructor tries to create an audio input resource using the v0.2
/// interface, and falls back on the v0.1 interface if that is not available.
/// Please use the 2-parameter Open() if you used this constructor.
///
/// Note: This constructor is deprecated. Unless your code has to deal with
/// browsers that only support the v0.1 interface, please use the 1-parameter
/// constructor instead.
AudioInput_Dev(const InstanceHandle& instance,
const AudioConfig& config,
PPB_AudioInput_Callback callback,
void* user_data);
/// This constructor uses the v0.2 interface to create an audio input
/// resource. Please use the 5-parameter Open() if you used this constructor.
explicit AudioInput_Dev(const InstanceHandle& instance);
virtual ~AudioInput_Dev();
/// Static function for determining whether the browser supports the required
/// AudioInput interface.
///
/// @return true if the interface is available, false otherwise.
static bool IsAvailable();
/// 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_; }
int32_t EnumerateDevices(
const CompletionCallbackWithOutput<std::vector<DeviceRef_Dev> >&
callback);
/// If |device_ref| is null (i.e., is_null() returns true), the default device
/// will be used.
/// In order to maintain backward compatibility, this method doesn't have
/// input parameters config, audio_input_callback and user_data. Instead, it
/// uses those values stored when the 4-parameter constructor was called.
///
/// Note: This method is deprecated. Unless your code has to deal with
/// browsers that only support the v0.1 interface, please use the other
/// Open().
int32_t Open(const DeviceRef_Dev& device_ref,
const CompletionCallback& callback);
int32_t Open(const DeviceRef_Dev& device_ref,
const AudioConfig& config,
PPB_AudioInput_Callback audio_input_callback,
void* user_data,
const CompletionCallback& callback);
bool StartCapture();
bool StopCapture();
void Close();
private:
AudioConfig config_;
// Used to store the arguments of Open() for the v0.2 interface.
PPB_AudioInput_Callback audio_input_callback_;
void* user_data_;
};
} // namespace pp
#endif // PPAPI_CPP_DEV_AUDIO_INPUT_DEV_H_
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