/src/mozilla-central/dom/media/mp4/BufferStream.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
2 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
3 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
4 | | |
5 | | #include "BufferStream.h" |
6 | | #include "MediaData.h" |
7 | | #include "MediaResource.h" |
8 | | #include <algorithm> |
9 | | |
10 | | namespace mozilla { |
11 | | |
12 | | BufferStream::BufferStream() |
13 | | : mStartOffset(0) |
14 | | , mData(new mozilla::MediaByteBuffer) |
15 | 0 | { |
16 | 0 | } |
17 | | |
18 | | BufferStream::BufferStream(mozilla::MediaByteBuffer* aBuffer) |
19 | | : mStartOffset(0) |
20 | | , mData(aBuffer) |
21 | 0 | { |
22 | 0 | } |
23 | | |
24 | | BufferStream::~BufferStream() |
25 | 0 | { |
26 | 0 | } |
27 | | |
28 | | /*virtual*/ bool |
29 | | BufferStream::ReadAt(int64_t aOffset, void* aData, size_t aLength, |
30 | | size_t* aBytesRead) |
31 | 0 | { |
32 | 0 | if (aOffset < mStartOffset || aOffset > mStartOffset + mData->Length()) { |
33 | 0 | return false; |
34 | 0 | } |
35 | 0 | *aBytesRead = |
36 | 0 | std::min(aLength, size_t(mStartOffset + mData->Length() - aOffset)); |
37 | 0 | memcpy(aData, mData->Elements() + aOffset - mStartOffset, *aBytesRead); |
38 | 0 | return true; |
39 | 0 | } |
40 | | |
41 | | /*virtual*/ bool |
42 | | BufferStream::CachedReadAt(int64_t aOffset, void* aData, size_t aLength, |
43 | | size_t* aBytesRead) |
44 | 0 | { |
45 | 0 | return ReadAt(aOffset, aData, aLength, aBytesRead); |
46 | 0 | } |
47 | | |
48 | | /*virtual*/ bool |
49 | | BufferStream::Length(int64_t* aLength) |
50 | 0 | { |
51 | 0 | *aLength = mStartOffset + mData->Length(); |
52 | 0 | return true; |
53 | 0 | } |
54 | | |
55 | | /* virtual */ void |
56 | | BufferStream::DiscardBefore(int64_t aOffset) |
57 | 0 | { |
58 | 0 | if (aOffset > mStartOffset) { |
59 | 0 | mData->RemoveElementsAt(0, aOffset - mStartOffset); |
60 | 0 | mStartOffset = aOffset; |
61 | 0 | } |
62 | 0 | } |
63 | | |
64 | | bool |
65 | | BufferStream::AppendBytes(const uint8_t* aData, size_t aLength) |
66 | 0 | { |
67 | 0 | return mData->AppendElements(aData, aLength, fallible); |
68 | 0 | } |
69 | | |
70 | | MediaByteRange |
71 | | BufferStream::GetByteRange() |
72 | 0 | { |
73 | 0 | return MediaByteRange(mStartOffset, mStartOffset + mData->Length()); |
74 | 0 | } |
75 | | } |