1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// 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 CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
#define CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
#pragma once
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "media/filters/gpu_video_decoder.h"
#include "ui/gfx/size.h"
class GpuChannelHost;
class RendererGLContext;
namespace base {
class WaitableEvent;
}
// Glue code to expose functionality needed by media::GpuVideoDecoder to
// RenderViewImpl. This class is entirely an implementation detail of
// RenderViewImpl and only has its own header to allow extraction of its
// implementation from render_view_impl.cc which is already far too large.
//
// The public methods of the class can be called from any thread, and are
// internally trampolined to the thread on which the class was constructed
// (de-facto, the renderer thread) if called from a different thread.
class CONTENT_EXPORT RendererGpuVideoDecoderFactories
: public media::GpuVideoDecoder::Factories {
public:
// Takes a ref on |gpu_channel_host| and tests |context| for NULL before each
// use.
RendererGpuVideoDecoderFactories(GpuChannelHost* gpu_channel_host,
base::WeakPtr<RendererGLContext> context);
virtual media::VideoDecodeAccelerator* CreateVideoDecodeAccelerator(
media::VideoDecodeAccelerator::Profile profile,
media::VideoDecodeAccelerator::Client* client) OVERRIDE;
virtual bool CreateTextures(int32 count, const gfx::Size& size,
std::vector<uint32>* texture_ids) OVERRIDE;
virtual void DeleteTexture(uint32 texture_id) OVERRIDE;
virtual base::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
protected:
friend class base::RefCountedThreadSafe<RendererGpuVideoDecoderFactories>;
virtual ~RendererGpuVideoDecoderFactories();
private:
// Async versions of the public methods. These all run on |message_loop_|
// exclusively, and use output parameters instead of return values. Finally,
// each takes a WaitableEvent* param to signal completion (except for
// DeleteTexture, which is fire-and-forget).
void AsyncCreateVideoDecodeAccelerator(
media::VideoDecodeAccelerator::Profile profile,
media::VideoDecodeAccelerator::Client* client,
media::VideoDecodeAccelerator** vda,
base::WaitableEvent* waiter);
void AsyncCreateTextures(
int32 count, const gfx::Size& size, std::vector<uint32>* texture_ids,
bool* success, base::WaitableEvent* waiter);
void AsyncDeleteTexture(uint32 texture_id);
void AsyncCreateSharedMemory(
size_t size, base::SharedMemory** shm, base::WaitableEvent* waiter);
MessageLoop* message_loop_;
scoped_refptr<GpuChannelHost> gpu_channel_host_;
base::WeakPtr<RendererGLContext> context_;
DISALLOW_IMPLICIT_CONSTRUCTORS(RendererGpuVideoDecoderFactories);
};
#endif // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
|
