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112 lines
4.8 KiB
C++
112 lines
4.8 KiB
C++
// Copyright (c) 2019 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file must follow a specific format in order to
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// support the CEF translator tool. See the translator.README.txt file in the
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// tools directory for more information.
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//
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#ifndef CEF_INCLUDE_CEF_AUDIO_HANDLER_H_
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#define CEF_INCLUDE_CEF_AUDIO_HANDLER_H_
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#pragma once
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#include "include/cef_base.h"
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#include "include/cef_browser.h"
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///
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/// Implement this interface to handle audio events.
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///
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/*--cef(source=client)--*/
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class CefAudioHandler : public virtual CefBaseRefCounted {
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public:
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typedef cef_channel_layout_t ChannelLayout;
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///
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/// Called on the UI thread to allow configuration of audio stream parameters.
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/// Return true to proceed with audio stream capture, or false to cancel it.
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/// All members of |params| can optionally be configured here, but they are
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/// also pre-filled with some sensible defaults.
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///
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/*--cef()--*/
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virtual bool GetAudioParameters(CefRefPtr<CefBrowser> browser,
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CefAudioParameters& params) {
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return true;
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}
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///
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/// Called on a browser audio capture thread when the browser starts
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/// streaming audio. OnAudioStreamStopped will always be called after
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/// OnAudioStreamStarted; both methods may be called multiple times
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/// for the same browser. |params| contains the audio parameters like
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/// sample rate and channel layout. |channels| is the number of channels.
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///
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/*--cef()--*/
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virtual void OnAudioStreamStarted(CefRefPtr<CefBrowser> browser,
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const CefAudioParameters& params,
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int channels) = 0;
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///
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/// Called on the audio stream thread when a PCM packet is received for the
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/// stream. |data| is an array representing the raw PCM data as a floating
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/// point type, i.e. 4-byte value(s). |frames| is the number of frames in the
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/// PCM packet. |pts| is the presentation timestamp (in milliseconds since the
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/// Unix Epoch) and represents the time at which the decompressed packet
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/// should be presented to the user. Based on |frames| and the
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/// |channel_layout| value passed to OnAudioStreamStarted you can calculate
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/// the size of the |data| array in bytes.
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///
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/*--cef()--*/
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virtual void OnAudioStreamPacket(CefRefPtr<CefBrowser> browser,
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const float** data,
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int frames,
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int64 pts) = 0;
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///
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/// Called on the UI thread when the stream has stopped. OnAudioSteamStopped
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/// will always be called after OnAudioStreamStarted; both methods may be
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/// called multiple times for the same stream.
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///
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/*--cef()--*/
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virtual void OnAudioStreamStopped(CefRefPtr<CefBrowser> browser) = 0;
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///
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/// Called on the UI or audio stream thread when an error occurred. During the
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/// stream creation phase this callback will be called on the UI thread while
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/// in the capturing phase it will be called on the audio stream thread. The
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/// stream will be stopped immediately.
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///
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/*--cef()--*/
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virtual void OnAudioStreamError(CefRefPtr<CefBrowser> browser,
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const CefString& message) = 0;
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};
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#endif // CEF_INCLUDE_CEF_AUDIO_HANDLER_H_
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