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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_VIDEO_DECODER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_VIDEO_DECODER_H_
#include <stdint.h>
#include <memory>
#include "base/containers/flat_map.h"
#include "base/time/time.h"
#include "media/base/media_types.h"
#include "media/base/status.h"
#include "media/base/video_decoder.h"
#include "media/base/video_decoder_config.h"
#include "media/media_buildflags.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_video_frame_output_callback.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_webcodecs_error_callback.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webcodecs/decoder_template.h"
#include "third_party/blink/renderer/modules/webcodecs/video_decoder_helper.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
namespace libgav1 {
class BufferPool;
}
namespace media {
class VideoFrame;
class DecoderBuffer;
class MediaLog;
} // namespace media
namespace blink {
class EncodedVideoChunk;
class ExceptionState;
class VideoDecoderConfig;
class VideoDecoderInit;
class VideoDecoderSupport;
class VideoFrame;
class V8VideoFrameOutputCallback;
class MODULES_EXPORT VideoDecoderTraits {
public:
using InitType = VideoDecoderInit;
using OutputType = VideoFrame;
using MediaOutputType = media::VideoFrame;
using MediaDecoderType = media::VideoDecoder;
using OutputCallbackType = V8VideoFrameOutputCallback;
using ConfigType = VideoDecoderConfig;
using MediaConfigType = media::VideoDecoderConfig;
using InputType = EncodedVideoChunk;
static constexpr bool kNeedsGpuFactories = true;
static std::unique_ptr<MediaDecoderType> CreateDecoder(
ExecutionContext& execution_context,
media::GpuVideoAcceleratorFactories* gpu_factories,
media::MediaLog* media_log);
static void InitializeDecoder(MediaDecoderType& decoder,
bool low_delay,
const MediaConfigType& media_config,
MediaDecoderType::InitCB init_cb,
MediaDecoderType::OutputCB output_cb);
static int GetMaxDecodeRequests(const MediaDecoderType& decoder);
static void UpdateDecoderLog(const MediaDecoderType& decoder,
const MediaConfigType& media_config,
media::MediaLog* media_log);
static const char* GetName();
};
class MODULES_EXPORT VideoDecoder : public DecoderTemplate<VideoDecoderTraits> {
DEFINE_WRAPPERTYPEINFO();
public:
static VideoDecoder* Create(ScriptState*,
const VideoDecoderInit*,
ExceptionState&);
static ScriptPromise<VideoDecoderSupport>
isConfigSupported(ScriptState*, const VideoDecoderConfig*, ExceptionState&);
static HardwarePreference GetHardwareAccelerationPreference(
const ConfigType& config);
// Returns parsed VideoType if the configuration is valid.
static std::optional<media::VideoType> IsValidVideoDecoderConfig(
const VideoDecoderConfig& config,
String* js_error_message);
// For use by MediaSource
static std::optional<media::VideoDecoderConfig> MakeMediaVideoDecoderConfig(
const ConfigType& config,
String* js_error_message,
bool* needs_converter_out = nullptr);
VideoDecoder(ScriptState*, const VideoDecoderInit*, ExceptionState&);
~VideoDecoder() override;
// EventTarget interface
const AtomicString& InterfaceName() const override;
protected:
bool IsValidConfig(const ConfigType& config,
String* js_error_message) override;
std::optional<media::VideoDecoderConfig> MakeMediaConfig(
const ConfigType& config,
String* js_error_message) override;
media::DecoderStatus::Or<scoped_refptr<media::DecoderBuffer>> MakeInput(
const InputType& input,
bool verify_key_frame) override;
media::DecoderStatus::Or<OutputType*> MakeOutput(
scoped_refptr<MediaOutputType>,
ExecutionContext*) override;
void OnActiveConfigChanged(const MediaConfigType& config) override;
private:
struct DecoderSpecificData {
// Bitstream converter to annex B for AVC/HEVC.
std::unique_ptr<VideoDecoderHelper> decoder_helper;
// Buffer pool for use with libgav1::ObuParser.
std::unique_ptr<libgav1::BufferPool> av1_buffer_pool;
};
// DecoderTemplate implementation.
HardwarePreference GetHardwarePreference(const ConfigType& config) override;
bool GetLowDelayPreference(const ConfigType& config) override;
void SetHardwarePreference(HardwarePreference preference) override;
// For use by ::MakeMediaConfig
static std::optional<media::VideoDecoderConfig>
MakeMediaVideoDecoderConfigInternal(
const ConfigType& config,
DecoderSpecificData& decoder_specific_data,
String* js_error_message,
bool* needs_converter_out = nullptr);
DecoderSpecificData decoder_specific_data_;
// Note: This may not be the active codec, it is just intended to be the last
// codec that was passed to a configure() call.
media::VideoCodec pending_codec_ = media::VideoCodec::kUnknown;
media::VideoTransformation active_transform_ = media::kNoTransformation;
// Per-chunk metadata to be applied to outputs, linked by timestamp.
struct ChunkMetadata {
base::TimeDelta duration;
};
base::flat_map<base::TimeDelta, ChunkMetadata> chunk_metadata_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_VIDEO_DECODER_H_
|
