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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "AudioTrimmer.h"
#define LOG(arg, ...) \
DDMOZ_LOG(sPDMLog, mozilla::LogLevel::Debug, "::%s: " arg, __func__, \
##__VA_ARGS__)
#define LOGV(arg, ...) \
DDMOZ_LOG(sPDMLog, mozilla::LogLevel::Verbose, "::%s: " arg, __func__, \
##__VA_ARGS__)
namespace mozilla {
using media::TimeInterval;
using media::TimeUnit;
RefPtr<MediaDataDecoder::InitPromise> AudioTrimmer::Init() {
mThread = GetCurrentSerialEventTarget();
return mDecoder->Init();
}
RefPtr<MediaDataDecoder::DecodePromise> AudioTrimmer::Decode(
MediaRawData* aSample) {
MOZ_ASSERT(mThread->IsOnCurrentThread(),
"We're not on the thread we were first initialized on");
RefPtr<MediaRawData> sample = aSample;
PrepareTrimmers(sample);
RefPtr<AudioTrimmer> self = this;
RefPtr<DecodePromise> p = mDecoder->Decode(sample)->Then(
GetCurrentSerialEventTarget(), __func__,
[self, sample](DecodePromise::ResolveOrRejectValue&& aValue) {
return self->HandleDecodedResult(std::move(aValue), sample);
});
return p;
}
RefPtr<MediaDataDecoder::FlushPromise> AudioTrimmer::Flush() {
MOZ_ASSERT(mThread->IsOnCurrentThread(),
"We're not on the thread we were first initialized on");
RefPtr<FlushPromise> p = mDecoder->Flush();
mTrimmers.Clear();
return p;
}
RefPtr<MediaDataDecoder::DecodePromise> AudioTrimmer::Drain() {
MOZ_ASSERT(mThread->IsOnCurrentThread(),
"We're not on the thread we were first initialized on");
LOG("Draining");
RefPtr<DecodePromise> p = mDecoder->Drain()->Then(
GetCurrentSerialEventTarget(), __func__,
[self = RefPtr{this}](DecodePromise::ResolveOrRejectValue&& aValue) {
return self->HandleDecodedResult(std::move(aValue), nullptr);
});
return p;
}
RefPtr<ShutdownPromise> AudioTrimmer::Shutdown() {
// mThread may not be set if Init hasn't been called first.
MOZ_ASSERT(!mThread || mThread->IsOnCurrentThread());
return mDecoder->Shutdown();
}
nsCString AudioTrimmer::GetDescriptionName() const {
return mDecoder->GetDescriptionName();
}
bool AudioTrimmer::IsHardwareAccelerated(nsACString& aFailureReason) const {
return mDecoder->IsHardwareAccelerated(aFailureReason);
}
void AudioTrimmer::SetSeekThreshold(const media::TimeUnit& aTime) {
mDecoder->SetSeekThreshold(aTime);
}
bool AudioTrimmer::SupportDecoderRecycling() const {
return mDecoder->SupportDecoderRecycling();
}
MediaDataDecoder::ConversionRequired AudioTrimmer::NeedsConversion() const {
return mDecoder->NeedsConversion();
}
RefPtr<MediaDataDecoder::DecodePromise> AudioTrimmer::HandleDecodedResult(
DecodePromise::ResolveOrRejectValue&& aValue, MediaRawData* aRaw) {
MOZ_ASSERT(mThread->IsOnCurrentThread(),
"We're not on the thread we were first initialized on");
if (aValue.IsReject()) {
return DecodePromise::CreateAndReject(std::move(aValue.RejectValue()),
__func__);
}
int64_t rawStart = aRaw ? aRaw->mTime.ToMicroseconds() : 0;
int64_t rawEnd = aRaw ? aRaw->GetEndTime().ToMicroseconds() : 0;
MediaDataDecoder::DecodedData results = std::move(aValue.ResolveValue());
if (results.IsEmpty()) {
// No samples returned, we assume this is due to the latency of the
// decoder and that the related decoded sample will be returned during
// the next call to Decode().
LOG("No sample returned for sample[%" PRId64 ",%" PRId64 "]", rawStart,
rawEnd);
}
for (uint32_t i = 0; i < results.Length();) {
const RefPtr<MediaData>& data = results[i];
MOZ_ASSERT(data->mType == MediaData::Type::AUDIO_DATA);
TimeInterval sampleInterval(data->mTime, data->GetEndTime());
if (mTrimmers.IsEmpty()) {
// mTrimmers being empty can only occurs if the decoder returned more
// frames than we pushed in. We can't handle this case, abort trimming.
LOG("sample[%" PRId64 ",%" PRId64 "] (decoded[%" PRId64 ",%" PRId64
"] no trimming information",
rawStart, rawEnd, sampleInterval.mStart.ToMicroseconds(),
sampleInterval.mEnd.ToMicroseconds());
i++;
continue;
}
Maybe<TimeInterval> trimmer = mTrimmers[0];
mTrimmers.RemoveElementAt(0);
if (!trimmer) {
// Those frames didn't need trimming.
LOGV("sample[%" PRId64 ",%" PRId64 "] (decoded[%" PRId64 ",%" PRId64
"] no trimming needed",
rawStart, rawEnd, sampleInterval.mStart.ToMicroseconds(),
sampleInterval.mEnd.ToMicroseconds());
i++;
continue;
}
if (!trimmer->Intersects(sampleInterval)) {
LOG("sample[%" PRId64 ",%" PRId64 "] (decoded[%" PRId64 ",%" PRId64
"] would be empty after trimming, dropping it",
rawStart, rawEnd, sampleInterval.mStart.ToMicroseconds(),
sampleInterval.mEnd.ToMicroseconds());
results.RemoveElementAt(i);
continue;
}
LOG("Trimming sample[%" PRId64 ",%" PRId64 "] to [%" PRId64 ",%" PRId64
"] (raw "
"was:[%" PRId64 ",%" PRId64 "])",
sampleInterval.mStart.ToMicroseconds(),
sampleInterval.mEnd.ToMicroseconds(), trimmer->mStart.ToMicroseconds(),
trimmer->mEnd.ToMicroseconds(), rawStart, rawEnd);
TimeInterval trim({std::max(trimmer->mStart, sampleInterval.mStart),
std::min(trimmer->mEnd, sampleInterval.mEnd)});
AudioData* sample = static_cast<AudioData*>(data.get());
bool ok = sample->SetTrimWindow(trim);
NS_ASSERTION(ok, "Trimming of audio sample failed");
Unused << ok;
if (sample->Frames() == 0) {
LOG("sample[%" PRId64 ",%" PRId64
"] is empty after trimming, dropping it",
rawStart, rawEnd);
results.RemoveElementAt(i);
continue;
}
i++;
}
return DecodePromise::CreateAndResolve(std::move(results), __func__);
}
RefPtr<MediaDataDecoder::DecodePromise> AudioTrimmer::DecodeBatch(
nsTArray<RefPtr<MediaRawData>>&& aSamples) {
MOZ_ASSERT(mThread->IsOnCurrentThread(),
"We're not on the thread we were first initialized on");
LOG("DecodeBatch");
for (auto&& sample : aSamples) {
PrepareTrimmers(sample);
}
RefPtr<DecodePromise> p =
mDecoder->DecodeBatch(std::move(aSamples))
->Then(GetCurrentSerialEventTarget(), __func__,
[self = RefPtr{this}](
DecodePromise::ResolveOrRejectValue&& aValue) {
// If the decoder returned less samples than what we fed it.
// We can assume that this is due to the decoder encoding
// delay and that all decoded frames have been shifted by n =
// compressedSamples.Length() - decodedSamples.Length() and
// that the first n compressed samples returned nothing.
return self->HandleDecodedResult(std::move(aValue), nullptr);
});
return p;
}
void AudioTrimmer::PrepareTrimmers(MediaRawData* aRaw) {
// A compress sample indicates that it needs to be trimmed after decoding by
// having its mOriginalPresentationWindow member set; in which case
// mOriginalPresentationWindow contains the original time and duration of
// the frame set by the demuxer and mTime and mDuration set to what it
// should be after trimming.
if (aRaw->mOriginalPresentationWindow) {
LOG("sample[%" PRId64 ",%" PRId64 "] has trimming info ([%" PRId64
",%" PRId64 "]",
aRaw->mOriginalPresentationWindow->mStart.ToMicroseconds(),
aRaw->mOriginalPresentationWindow->mEnd.ToMicroseconds(),
aRaw->mTime.ToMicroseconds(), aRaw->GetEndTime().ToMicroseconds());
mTrimmers.AppendElement(
Some(TimeInterval(aRaw->mTime, aRaw->GetEndTime())));
aRaw->mTime = aRaw->mOriginalPresentationWindow->mStart;
aRaw->mDuration = aRaw->mOriginalPresentationWindow->Length();
} else {
LOGV("sample[%" PRId64 ",%" PRId64 "] no trimming information",
aRaw->mTime.ToMicroseconds(), aRaw->GetEndTime().ToMicroseconds());
mTrimmers.AppendElement(Nothing());
}
}
} // namespace mozilla
#undef LOG
|
