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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// Copyright (c) 2010 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.
#include "remoting/client/rectangle_update_decoder.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "media/base/callback.h"
#include "remoting/base/decoder.h"
#include "remoting/base/decoder_row_based.h"
#include "remoting/base/decoder_vp8.h"
#include "remoting/base/tracer.h"
#include "remoting/base/util.h"
#include "remoting/client/frame_consumer.h"
#include "remoting/protocol/session_config.h"
using media::AutoTaskRunner;
using remoting::protocol::ChannelConfig;
using remoting::protocol::SessionConfig;
namespace remoting {
namespace {
class PartialFrameCleanup : public Task {
public:
PartialFrameCleanup(media::VideoFrame* frame, UpdatedRects* rects)
: frame_(frame), rects_(rects) {
}
virtual void Run() {
delete rects_;
frame_ = NULL;
}
private:
scoped_refptr<media::VideoFrame> frame_;
UpdatedRects* rects_;
};
} // namespace
RectangleUpdateDecoder::RectangleUpdateDecoder(MessageLoop* message_loop,
FrameConsumer* consumer)
: message_loop_(message_loop),
consumer_(consumer),
frame_is_new_(false) {
}
RectangleUpdateDecoder::~RectangleUpdateDecoder() {
}
void RectangleUpdateDecoder::Initialize(const SessionConfig* config) {
initial_screen_size_ = gfx::Size(config->initial_resolution().width,
config->initial_resolution().height);
// Initialize decoder based on the selected codec.
ChannelConfig::Codec codec = config->video_config().codec;
if (codec == ChannelConfig::CODEC_VERBATIM) {
TraceContext::tracer()->PrintString("Creating Verbatim decoder.");
decoder_.reset(DecoderRowBased::CreateVerbatimDecoder());
} else if (codec == ChannelConfig::CODEC_ZIP) {
TraceContext::tracer()->PrintString("Creating Zlib decoder");
decoder_.reset(DecoderRowBased::CreateZlibDecoder());
// TODO(sergeyu): Enable VP8 on ARM builds.
#if !defined(ARCH_CPU_ARM_FAMILY)
} else if (codec == ChannelConfig::CODEC_VP8) {
TraceContext::tracer()->PrintString("Creating VP8 decoder");
decoder_.reset(new DecoderVp8());
#endif
} else {
NOTREACHED() << "Invalid Encoding found: " << codec;
}
}
void RectangleUpdateDecoder::DecodePacket(const VideoPacket* packet,
Task* done) {
if (message_loop_ != MessageLoop::current()) {
message_loop_->PostTask(
FROM_HERE,
NewTracedMethod(this,
&RectangleUpdateDecoder::DecodePacket, packet,
done));
return;
}
AutoTaskRunner done_runner(done);
TraceContext::tracer()->PrintString("Decode Packet called.");
AllocateFrame(packet, done_runner.release());
}
void RectangleUpdateDecoder::AllocateFrame(const VideoPacket* packet,
Task* done) {
if (message_loop_ != MessageLoop::current()) {
message_loop_->PostTask(
FROM_HERE,
NewTracedMethod(this,
&RectangleUpdateDecoder::AllocateFrame, packet, done));
return;
}
AutoTaskRunner done_runner(done);
TraceContext::tracer()->PrintString("AllocateFrame called.");
// Find the required frame size.
bool has_screen_size = packet->format().has_screen_width() &&
packet->format().has_screen_height();
gfx::Size screen_size(packet->format().screen_width(),
packet->format().screen_height());
if (!has_screen_size)
screen_size = initial_screen_size_;
// Find the current frame size.
gfx::Size frame_size(0, 0);
if (frame_)
frame_size = gfx::Size(static_cast<int>(frame_->width()),
static_cast<int>(frame_->height()));
// Allocate a new frame, if necessary.
if ((!frame_) || (has_screen_size && (screen_size != frame_size))) {
if (frame_) {
TraceContext::tracer()->PrintString("Releasing old frame.");
consumer_->ReleaseFrame(frame_);
frame_ = NULL;
}
TraceContext::tracer()->PrintString("Requesting new frame.");
consumer_->AllocateFrame(media::VideoFrame::RGB32,
screen_size.width(), screen_size.height(),
base::TimeDelta(), base::TimeDelta(),
&frame_,
NewRunnableMethod(this,
&RectangleUpdateDecoder::ProcessPacketData,
packet, done_runner.release()));
frame_is_new_ = true;
return;
}
ProcessPacketData(packet, done_runner.release());
}
void RectangleUpdateDecoder::ProcessPacketData(
const VideoPacket* packet, Task* done) {
if (message_loop_ != MessageLoop::current()) {
message_loop_->PostTask(
FROM_HERE,
NewTracedMethod(this,
&RectangleUpdateDecoder::ProcessPacketData, packet,
done));
return;
}
AutoTaskRunner done_runner(done);
if (frame_is_new_) {
decoder_->Reset();
decoder_->Initialize(frame_);
frame_is_new_ = false;
}
if (!decoder_->IsReadyForData()) {
// TODO(ajwong): This whole thing should move into an invalid state.
LOG(ERROR) << "Decoder is unable to process data. Dropping packet.";
return;
}
TraceContext::tracer()->PrintString("Executing Decode.");
if (decoder_->DecodePacket(packet) == Decoder::DECODE_DONE) {
UpdatedRects* rects = new UpdatedRects();
decoder_->GetUpdatedRects(rects);
consumer_->OnPartialFrameOutput(frame_, rects,
new PartialFrameCleanup(frame_, rects));
}
}
} // namespace remoting
|
