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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
// Copyright (c) 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_VIDEO_DECODER_HOST_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DECODER_HOST_H_
#include <map>
#include <vector>
#include "base/basictypes.h"
#include "base/containers/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "content/common/content_export.h"
#include "media/video/video_decode_accelerator.h"
#include "ppapi/c/pp_codecs.h"
#include "ppapi/host/host_message_context.h"
#include "ppapi/host/resource_host.h"
#include "ppapi/proxy/resource_message_params.h"
namespace base {
class SharedMemory;
}
namespace content {
class PPB_Graphics3D_Impl;
class RendererPpapiHost;
class RenderViewImpl;
class VideoDecoderShim;
class CONTENT_EXPORT PepperVideoDecoderHost
: public ppapi::host::ResourceHost,
public media::VideoDecodeAccelerator::Client {
public:
PepperVideoDecoderHost(RendererPpapiHost* host,
PP_Instance instance,
PP_Resource resource);
~PepperVideoDecoderHost() override;
private:
struct PendingDecode {
PendingDecode(uint32_t shm_id,
const ppapi::host::ReplyMessageContext& reply_context);
~PendingDecode();
const uint32_t shm_id;
const ppapi::host::ReplyMessageContext reply_context;
};
friend class VideoDecoderShim;
// ResourceHost implementation.
int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) override;
// media::VideoDecodeAccelerator::Client implementation.
void ProvidePictureBuffers(uint32 requested_num_of_buffers,
const gfx::Size& dimensions,
uint32 texture_target) override;
void DismissPictureBuffer(int32 picture_buffer_id) override;
void PictureReady(const media::Picture& picture) override;
void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) override;
void NotifyFlushDone() override;
void NotifyResetDone() override;
void NotifyError(media::VideoDecodeAccelerator::Error error) override;
int32_t OnHostMsgInitialize(ppapi::host::HostMessageContext* context,
const ppapi::HostResource& graphics_context,
PP_VideoProfile profile,
PP_HardwareAcceleration acceleration);
int32_t OnHostMsgGetShm(ppapi::host::HostMessageContext* context,
uint32_t shm_id,
uint32_t shm_size);
int32_t OnHostMsgDecode(ppapi::host::HostMessageContext* context,
uint32_t shm_id,
uint32_t size,
int32_t decode_id);
int32_t OnHostMsgAssignTextures(ppapi::host::HostMessageContext* context,
const PP_Size& size,
const std::vector<uint32_t>& texture_ids);
int32_t OnHostMsgRecyclePicture(ppapi::host::HostMessageContext* context,
uint32_t picture_id);
int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context);
int32_t OnHostMsgReset(ppapi::host::HostMessageContext* context);
// These methods are needed by VideoDecodeShim, to look like a
// VideoDecodeAccelerator.
void OnInitializeComplete(int32_t result);
const uint8_t* DecodeIdToAddress(uint32_t decode_id);
void RequestTextures(uint32 requested_num_of_buffers,
const gfx::Size& dimensions,
uint32 texture_target,
const std::vector<gpu::Mailbox>& mailboxes);
// Non-owning pointer.
RendererPpapiHost* renderer_ppapi_host_;
scoped_ptr<media::VideoDecodeAccelerator> decoder_;
// A vector holding our shm buffers, in sync with a similar vector in the
// resource. We use a buffer's index in these vectors as its id on both sides
// of the proxy. Only add buffers or update them in place so as not to
// invalidate these ids.
ScopedVector<base::SharedMemory> shm_buffers_;
// A vector of true/false indicating if a shm buffer is in use by the decoder.
// This is parallel to |shm_buffers_|.
std::vector<uint8_t> shm_buffer_busy_;
// Maps decode uid to PendingDecode info.
typedef base::hash_map<int32_t, PendingDecode> PendingDecodeMap;
PendingDecodeMap pending_decodes_;
ppapi::host::ReplyMessageContext flush_reply_context_;
ppapi::host::ReplyMessageContext reset_reply_context_;
// Only used when in software fallback mode.
ppapi::host::ReplyMessageContext initialize_reply_context_;
bool initialized_;
DISALLOW_COPY_AND_ASSIGN(PepperVideoDecoderHost);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DECODER_HOST_H_
|
