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// Copyright 2014 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 CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_
#include <stdint.h>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "content/common/content_export.h"
#include "ppapi/host/resource_host.h"
#include "ppapi/shared_impl/media_stream_buffer_manager.h"
namespace content {
class RendererPpapiHost;
class PepperMediaStreamTrackHostBase
: public ppapi::host::ResourceHost,
public ppapi::MediaStreamBufferManager::Delegate {
protected:
PepperMediaStreamTrackHostBase(RendererPpapiHost* host,
PP_Instance instance,
PP_Resource resource);
~PepperMediaStreamTrackHostBase() override;
enum TrackType {
kRead,
kWrite
};
bool InitBuffers(int32_t number_of_buffers,
int32_t buffer_size,
TrackType track_type);
ppapi::MediaStreamBufferManager* buffer_manager() { return &buffer_manager_; }
// Sends a buffer index to the corresponding MediaStreamTrackResourceBase
// via an IPC message. The resource adds the buffer index into its
// |buffer_manager_| for reading or writing.
// Also see |MediaStreamBufferManager|.
void SendEnqueueBufferMessageToPlugin(int32_t index);
// Sends a set of buffer indices to the corresponding
// MediaStreamTrackResourceBase via an IPC message.
// The resource adds the buffer indices into its
// |frame_buffer_| for reading or writing. Also see |MediaStreamFrameBuffer|.
void SendEnqueueBuffersMessageToPlugin(const std::vector<int32_t>& indices);
// ResourceMessageHandler overrides:
int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) override;
// Message handlers:
virtual int32_t OnHostMsgEnqueueBuffer(
ppapi::host::HostMessageContext* context, int32_t index);
private:
// Subclasses must implement this method to clean up when the track is closed.
virtual void OnClose() = 0;
// Message handlers:
int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
RendererPpapiHost* host_;
ppapi::MediaStreamBufferManager buffer_manager_;
DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamTrackHostBase);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_
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