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
|
// Copyright 2013 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 "content/renderer/media/rtc_video_encoder_factory.h"
#include "base/command_line.h"
#include "content/common/gpu/client/gpu_video_encode_accelerator_host.h"
#include "content/public/common/content_switches.h"
#include "content/renderer/media/rtc_video_encoder.h"
#include "media/filters/gpu_video_accelerator_factories.h"
#include "media/video/video_encode_accelerator.h"
namespace content {
namespace {
// Translate from media::VideoEncodeAccelerator::SupportedProfile to
// one or more instances of cricket::WebRtcVideoEncoderFactory::VideoCodec
void VEAToWebRTCCodecs(
std::vector<cricket::WebRtcVideoEncoderFactory::VideoCodec>* codecs,
const media::VideoEncodeAccelerator::SupportedProfile& profile) {
int width = profile.max_resolution.width();
int height = profile.max_resolution.height();
int fps = profile.max_framerate_numerator;
DCHECK_EQ(profile.max_framerate_denominator, 1U);
const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
if (profile.profile >= media::VP8PROFILE_MIN &&
profile.profile <= media::VP8PROFILE_MAX) {
if (cmd_line->HasSwitch(switches::kEnableWebRtcHWVp8Encoding)) {
codecs->push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
webrtc::kVideoCodecVP8, "VP8", width, height, fps));
}
} else if (profile.profile >= media::H264PROFILE_MIN &&
profile.profile <= media::H264PROFILE_MAX) {
if (cmd_line->HasSwitch(switches::kEnableWebRtcHWH264Encoding)) {
codecs->push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
webrtc::kVideoCodecH264, "H264", width, height, fps));
}
// TODO(hshi): remove the generic codec type after CASTv1 deprecation.
codecs->push_back(cricket::WebRtcVideoEncoderFactory::VideoCodec(
webrtc::kVideoCodecGeneric, "CAST1", width, height, fps));
}
}
// Translate from cricket::WebRtcVideoEncoderFactory::VideoCodec to
// media::VideoCodecProfile. Pick a default profile for each codec type.
media::VideoCodecProfile WebRTCCodecToVideoCodecProfile(
webrtc::VideoCodecType type) {
switch (type) {
case webrtc::kVideoCodecVP8:
return media::VP8PROFILE_ANY;
case webrtc::kVideoCodecH264:
case webrtc::kVideoCodecGeneric:
return media::H264PROFILE_MAIN;
default:
return media::VIDEO_CODEC_PROFILE_UNKNOWN;
}
}
} // anonymous namespace
RTCVideoEncoderFactory::RTCVideoEncoderFactory(
const scoped_refptr<media::GpuVideoAcceleratorFactories>& gpu_factories)
: gpu_factories_(gpu_factories) {
std::vector<media::VideoEncodeAccelerator::SupportedProfile> profiles =
gpu_factories_->GetVideoEncodeAcceleratorSupportedProfiles();
for (size_t i = 0; i < profiles.size(); ++i)
VEAToWebRTCCodecs(&codecs_, profiles[i]);
}
RTCVideoEncoderFactory::~RTCVideoEncoderFactory() {}
webrtc::VideoEncoder* RTCVideoEncoderFactory::CreateVideoEncoder(
webrtc::VideoCodecType type) {
bool found = false;
for (size_t i = 0; i < codecs_.size(); ++i) {
if (codecs_[i].type == type) {
found = true;
break;
}
}
if (!found)
return NULL;
return new RTCVideoEncoder(
type, WebRTCCodecToVideoCodecProfile(type), gpu_factories_);
}
void RTCVideoEncoderFactory::AddObserver(Observer* observer) {
// No-op: our codec list is populated on installation.
}
void RTCVideoEncoderFactory::RemoveObserver(Observer* observer) {}
const std::vector<cricket::WebRtcVideoEncoderFactory::VideoCodec>&
RTCVideoEncoderFactory::codecs() const {
return codecs_;
}
void RTCVideoEncoderFactory::DestroyVideoEncoder(
webrtc::VideoEncoder* encoder) {
delete encoder;
}
} // namespace content
|
