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-rw-r--r--media/libstagefright/binding/MoofParser.cpp273
-rw-r--r--media/libstagefright/binding/SinfParser.cpp24
-rw-r--r--media/libstagefright/binding/include/mp4_demuxer/Box.h6
-rw-r--r--media/libstagefright/binding/include/mp4_demuxer/BufferReader.h225
-rw-r--r--media/libstagefright/binding/include/mp4_demuxer/ByteReader.h38
-rw-r--r--media/libstagefright/moz.build1
6 files changed, 467 insertions, 100 deletions
diff --git a/media/libstagefright/binding/MoofParser.cpp b/media/libstagefright/binding/MoofParser.cpp
index ced054282..491967a12 100644
--- a/media/libstagefright/binding/MoofParser.cpp
+++ b/media/libstagefright/binding/MoofParser.cpp
@@ -550,14 +550,20 @@ Moof::ParseTrun(Box& aBox, Tfhd& aTfhd, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, u
LOG(Moof, "Incomplete Box (missing flags)");
return false;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return false;
+ }
uint8_t version = flags >> 24;
if (!reader->CanReadType<uint32_t>()) {
LOG(Moof, "Incomplete Box (missing sampleCount)");
return false;
}
- uint32_t sampleCount = reader->ReadU32();
+ uint32_t sampleCount;
+ if (!reader->ReadU32(sampleCount)) {
+ return false;
+ }
if (sampleCount == 0) {
return true;
}
@@ -577,9 +583,21 @@ Moof::ParseTrun(Box& aBox, Tfhd& aTfhd, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, u
return false;
}
- uint64_t offset = aTfhd.mBaseDataOffset + (flags & 1 ? reader->ReadU32() : 0);
- uint32_t firstSampleFlags =
- flags & 4 ? reader->ReadU32() : aTfhd.mDefaultSampleFlags;
+ uint64_t offset = aTfhd.mBaseDataOffset;
+ if (flags & 1) {
+ uint32_t baseOffset;
+ if (!reader->ReadU32(baseOffset)) {
+ return false;
+ }
+ offset += baseOffset;
+ }
+ uint32_t firstSampleFlags = aTfhd.mDefaultSampleFlags;
+ if (flags & 4) {
+ if (!reader->ReadU32(firstSampleFlags)) {
+ return false;
+ }
+ }
+
uint64_t decodeTime = *aDecodeTime;
nsTArray<Interval<Microseconds>> timeRanges;
@@ -589,16 +607,29 @@ Moof::ParseTrun(Box& aBox, Tfhd& aTfhd, Mvhd& aMvhd, Mdhd& aMdhd, Edts& aEdts, u
}
for (size_t i = 0; i < sampleCount; i++) {
- uint32_t sampleDuration =
- flags & 0x100 ? reader->ReadU32() : aTfhd.mDefaultSampleDuration;
- uint32_t sampleSize =
- flags & 0x200 ? reader->ReadU32() : aTfhd.mDefaultSampleSize;
- uint32_t sampleFlags =
- flags & 0x400 ? reader->ReadU32()
- : i ? aTfhd.mDefaultSampleFlags : firstSampleFlags;
+ uint32_t sampleDuration = aTfhd.mDefaultSampleDuration;
+ if (flags & 0x100) {
+ if (!reader->ReadU32(sampleDuration)) {
+ return false;
+ }
+ }
+ uint32_t sampleSize = aTfhd.mDefaultSampleSize;
+ if (flags & 0x200) {
+ if (!reader->ReadU32(sampleSize)) {
+ return false;
+ }
+ }
+ uint32_t sampleFlags = i ? aTfhd.mDefaultSampleFlags : firstSampleFlags;
+ if (flags & 0x400) {
+ if (!reader->ReadU32(sampleFlags)) {
+ return false;
+ }
+ }
int32_t ctsOffset = 0;
if (flags & 0x800) {
- ctsOffset = reader->Read32();
+ if (!reader->Read32(ctsOffset)) {
+ return false;
+ }
}
Sample sample;
@@ -635,7 +666,10 @@ Tkhd::Tkhd(Box& aBox)
LOG(Tkhd, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
size_t need =
3*(version ? sizeof(int64_t) : sizeof(int32_t)) + 2*sizeof(int32_t);
@@ -645,19 +679,30 @@ Tkhd::Tkhd(Box& aBox)
return;
}
if (version == 0) {
- mCreationTime = reader->ReadU32();
- mModificationTime = reader->ReadU32();
- mTrackId = reader->ReadU32();
- uint32_t reserved = reader->ReadU32();
+ uint32_t createTime, modificationTime, trackId, reserved, duration;
+ if (!reader->ReadU32(createTime) ||
+ !reader->ReadU32(modificationTime) ||
+ !reader->ReadU32(trackId) ||
+ !reader->ReadU32(reserved) ||
+ !reader->ReadU32(duration)) {
+ return;
+ }
NS_ASSERTION(!reserved, "reserved should be 0");
- mDuration = reader->ReadU32();
+ mCreationTime = createTime;
+ mModificationTime = modificationTime;
+ mTrackId = trackId;
+ mDuration = duration;
} else if (version == 1) {
- mCreationTime = reader->ReadU64();
- mModificationTime = reader->ReadU64();
- mTrackId = reader->ReadU32();
- uint32_t reserved = reader->ReadU32();
+ uint32_t trackId, reserved;
+ if (!reader->ReadU64(mCreationTime) ||
+ !reader->ReadU64(mModificationTime) ||
+ !reader->ReadU32(trackId) ||
+ !reader->ReadU32(reserved) ||
+ !reader->ReadU64(mDuration)) {
+ return;
+ }
NS_ASSERTION(!reserved, "reserved should be 0");
- mDuration = reader->ReadU64();
+ mTrackId = trackId;
}
// We don't care about whatever else may be in the box.
mValid = true;
@@ -670,10 +715,13 @@ Mvhd::Mvhd(Box& aBox)
LOG(Mdhd, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
size_t need =
- 3*(version ? sizeof(int64_t) : sizeof(int32_t)) + sizeof(uint32_t);
+ 3 * (version ? sizeof(int64_t) : sizeof(int32_t)) + sizeof(uint32_t);
if (reader->Remaining() < need) {
LOG(Mvhd, "Incomplete Box (have:%lld need:%lld)",
(uint64_t)reader->Remaining(), (uint64_t)need);
@@ -681,15 +729,23 @@ Mvhd::Mvhd(Box& aBox)
}
if (version == 0) {
- mCreationTime = reader->ReadU32();
- mModificationTime = reader->ReadU32();
- mTimescale = reader->ReadU32();
- mDuration = reader->ReadU32();
+ uint32_t createTime, modificationTime, duration;
+ if (!reader->ReadU32(createTime) ||
+ !reader->ReadU32(modificationTime) ||
+ !reader->ReadU32(mTimescale) ||
+ !reader->ReadU32(duration)) {
+ return;
+ }
+ mCreationTime = createTime;
+ mModificationTime = modificationTime;
+ mDuration = duration;
} else if (version == 1) {
- mCreationTime = reader->ReadU64();
- mModificationTime = reader->ReadU64();
- mTimescale = reader->ReadU32();
- mDuration = reader->ReadU64();
+ if (!reader->ReadU64(mCreationTime) ||
+ !reader->ReadU64(mModificationTime) ||
+ !reader->ReadU32(mTimescale) ||
+ !reader->ReadU64(mDuration)) {
+ return;
+ }
} else {
return;
}
@@ -707,18 +763,19 @@ Mdhd::Mdhd(Box& aBox)
Trex::Trex(Box& aBox)
{
BoxReader reader(aBox);
- if (reader->Remaining() < 6*sizeof(uint32_t)) {
+ if (reader->Remaining() < 6 * sizeof(uint32_t)) {
LOG(Trex, "Incomplete Box (have:%lld need:%lld)",
(uint64_t)reader->Remaining(), (uint64_t)6*sizeof(uint32_t));
return;
}
- mFlags = reader->ReadU32();
- mTrackId = reader->ReadU32();
- mDefaultSampleDescriptionIndex = reader->ReadU32();
- mDefaultSampleDuration = reader->ReadU32();
- mDefaultSampleSize = reader->ReadU32();
- mDefaultSampleFlags = reader->ReadU32();
- mValid = true;
+ if (!reader->ReadU32(mFlags) ||
+ !reader->ReadU32(mTrackId) ||
+ !reader->ReadU32(mDefaultSampleDescriptionIndex) ||
+ !reader->ReadU32(mDefaultSampleDuration) ||
+ !reader->ReadU32(mDefaultSampleSize) ||
+ !reader->ReadU32(mDefaultSampleFlags)) {
+ return;
+ }
}
Tfhd::Tfhd(Box& aBox, Trex& aTrex)
@@ -733,7 +790,9 @@ Tfhd::Tfhd(Box& aBox, Trex& aTrex)
LOG(Tfhd, "Incomplete Box (missing flags)");
return;
}
- mFlags = reader->ReadU32();
+ if (!reader->ReadU32(mFlags)) {
+ return;
+ }
size_t need = sizeof(uint32_t) /* trackid */;
uint8_t flag[] = { 1, 2, 8, 0x10, 0x20, 0 };
uint8_t flagSize[] = { sizeof(uint64_t), sizeof(uint32_t), sizeof(uint32_t), sizeof(uint32_t), sizeof(uint32_t) };
@@ -747,20 +806,34 @@ Tfhd::Tfhd(Box& aBox, Trex& aTrex)
(uint64_t)reader->Remaining(), (uint64_t)need);
return;
}
- mTrackId = reader->ReadU32();
- mBaseDataOffset =
- mFlags & 1 ? reader->ReadU64() : aBox.Parent()->Parent()->Offset();
+ if (!reader->ReadU32(mTrackId)) {
+ return;
+ }
+ mBaseDataOffset = aBox.Parent()->Parent()->Offset();
+ if (mFlags & 1) {
+ if (!reader->ReadU64(mBaseDataOffset)) {
+ return;
+ }
+ }
if (mFlags & 2) {
- mDefaultSampleDescriptionIndex = reader->ReadU32();
+ if (!reader->ReadU32(mDefaultSampleDescriptionIndex)) {
+ return;
+ }
}
if (mFlags & 8) {
- mDefaultSampleDuration = reader->ReadU32();
+ if (!reader->ReadU32(mDefaultSampleDuration)) {
+ return;
+ }
}
if (mFlags & 0x10) {
- mDefaultSampleSize = reader->ReadU32();
+ if (!reader->ReadU32(mDefaultSampleSize)) {
+ return;
+ }
}
if (mFlags & 0x20) {
- mDefaultSampleFlags = reader->ReadU32();
+ if (!reader->ReadU32(mDefaultSampleFlags)) {
+ return;
+ }
}
mValid = true;
}
@@ -772,7 +845,10 @@ Tfdt::Tfdt(Box& aBox)
LOG(Tfdt, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
size_t need = version ? sizeof(uint64_t) : sizeof(uint32_t) ;
if (reader->Remaining() < need) {
@@ -781,9 +857,15 @@ Tfdt::Tfdt(Box& aBox)
return;
}
if (version == 0) {
- mBaseMediaDecodeTime = reader->ReadU32();
+ uint32_t baseDecodeTime;
+ if (!reader->ReadU32(baseDecodeTime)) {
+ return;
+ }
+ mBaseMediaDecodeTime = baseDecodeTime;
} else if (version == 1) {
- mBaseMediaDecodeTime = reader->ReadU64();
+ if (!reader->ReadU64(mBaseMediaDecodeTime)) {
+ return;
+ }
}
mValid = true;
}
@@ -802,7 +884,10 @@ Edts::Edts(Box& aBox)
LOG(Edts, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
size_t need =
sizeof(uint32_t) + 2*(version ? sizeof(int64_t) : sizeof(uint32_t));
@@ -812,16 +897,27 @@ Edts::Edts(Box& aBox)
return;
}
bool emptyEntry = false;
- uint32_t entryCount = reader->ReadU32();
+ uint32_t entryCount;
+ if (!reader->ReadU32(entryCount)) {
+ return;
+ }
for (uint32_t i = 0; i < entryCount; i++) {
uint64_t segment_duration;
int64_t media_time;
if (version == 1) {
- segment_duration = reader->ReadU64();
- media_time = reader->Read64();
+ if (!reader->ReadU64(segment_duration) ||
+ !reader->Read64(media_time)) {
+ return;
+ }
} else {
- segment_duration = reader->ReadU32();
- media_time = reader->Read32();
+ uint32_t duration;
+ int32_t time;
+ if (!reader->ReadU32(duration) ||
+ !reader->Read32(time)) {
+ return;
+ }
+ segment_duration = duration;
+ media_time = time;
}
if (media_time == -1 && i) {
LOG(Edts, "Multiple empty edit, not handled");
@@ -834,8 +930,12 @@ Edts::Edts(Box& aBox)
} else {
mMediaStart = media_time;
}
- reader->ReadU32(); // media_rate_integer and media_rate_fraction
+ // media_rate_integer and media_rate_fraction
+ if (!reader->Skip(4)) {
+ return;
+ }
}
+ mValid = true;
}
Saiz::Saiz(Box& aBox, AtomType aDefaultType)
@@ -847,7 +947,10 @@ Saiz::Saiz(Box& aBox, AtomType aDefaultType)
LOG(Saiz, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
size_t need =
((flags & 1) ? 2*sizeof(uint32_t) : 0) + sizeof(uint8_t) + sizeof(uint32_t);
@@ -857,11 +960,19 @@ Saiz::Saiz(Box& aBox, AtomType aDefaultType)
return;
}
if (flags & 1) {
- mAuxInfoType = reader->ReadU32();
- mAuxInfoTypeParameter = reader->ReadU32();
+ uint32_t auxType;
+ if (!reader->ReadU32(auxType) ||
+ !reader->ReadU32(mAuxInfoTypeParameter)) {
+ return;
+ }
+ mAuxInfoType = auxType;
+ }
+ uint8_t defaultSampleInfoSize;
+ uint32_t count;
+ if (!reader->ReadU8(defaultSampleInfoSize) ||
+ !reader->ReadU32(count)) {
+ return;
}
- uint8_t defaultSampleInfoSize = reader->ReadU8();
- uint32_t count = reader->ReadU32();
if (defaultSampleInfoSize) {
if (!mSampleInfoSize.SetLength(count, fallible)) {
LOG(Saiz, "OOM");
@@ -886,19 +997,29 @@ Saio::Saio(Box& aBox, AtomType aDefaultType)
LOG(Saio, "Incomplete Box (missing flags)");
return;
}
- uint32_t flags = reader->ReadU32();
+ uint32_t flags;
+ if (!reader->ReadU32(flags)) {
+ return;
+ }
uint8_t version = flags >> 24;
- size_t need = ((flags & 1) ? (2*sizeof(uint32_t)) : 0) + sizeof(uint32_t);
+ size_t need = ((flags & 1) ? (2 * sizeof(uint32_t)) : 0) + sizeof(uint32_t);
if (reader->Remaining() < need) {
LOG(Saio, "Incomplete Box (have:%lld need:%lld)",
(uint64_t)reader->Remaining(), (uint64_t)need);
return;
}
if (flags & 1) {
- mAuxInfoType = reader->ReadU32();
- mAuxInfoTypeParameter = reader->ReadU32();
+ uint32_t auxType;
+ if (!reader->ReadU32(auxType) ||
+ !reader->ReadU32(mAuxInfoTypeParameter)) {
+ return;
+ }
+ mAuxInfoType = auxType;
+ }
+ uint32_t count;
+ if (!reader->ReadU32(count)) {
+ return;
}
- size_t count = reader->ReadU32();
need = (version ? sizeof(uint64_t) : sizeof(uint32_t)) * count;
if (reader->Remaining() < need) {
LOG(Saio, "Incomplete Box (have:%lld need:%lld)",
@@ -910,12 +1031,20 @@ Saio::Saio(Box& aBox, AtomType aDefaultType)
return;
}
if (version == 0) {
+ uint32_t offset;
for (size_t i = 0; i < count; i++) {
- MOZ_ALWAYS_TRUE(mOffsets.AppendElement(reader->ReadU32(), fallible));
+ if (!reader->ReadU32(offset)) {
+ return;
+ }
+ MOZ_ALWAYS_TRUE(mOffsets.AppendElement(offset, fallible));
}
} else {
+ uint64_t offset;
for (size_t i = 0; i < count; i++) {
- MOZ_ALWAYS_TRUE(mOffsets.AppendElement(reader->ReadU64(), fallible));
+ if (!reader->ReadU64(offset)) {
+ return;
+ }
+ MOZ_ALWAYS_TRUE(mOffsets.AppendElement(offset, fallible));
}
}
mValid = true;
diff --git a/media/libstagefright/binding/SinfParser.cpp b/media/libstagefright/binding/SinfParser.cpp
index 5cf3aa553..5f3a2889e 100644
--- a/media/libstagefright/binding/SinfParser.cpp
+++ b/media/libstagefright/binding/SinfParser.cpp
@@ -39,8 +39,13 @@ SinfParser::ParseSchm(Box& aBox)
return;
}
- mozilla::Unused << reader->ReadU32(); // flags -- ignore
- mSinf.mDefaultEncryptionType = reader->ReadU32();
+ uint32_t type;
+ if (!reader->Skip(4) ||
+ !reader->ReadU32(type)) {
+ NS_WARNING("Failed to parse schm data");
+ return;
+ }
+ mSinf.mDefaultEncryptionType = type;
}
void
@@ -62,11 +67,16 @@ SinfParser::ParseTenc(Box& aBox)
return;
}
- mozilla::Unused << reader->ReadU32(); // flags -- ignore
-
- uint32_t isEncrypted = reader->ReadU24();
- mSinf.mDefaultIVSize = reader->ReadU8();
- memcpy(mSinf.mDefaultKeyID, reader->Read(16), 16);
+ uint32_t isEncrypted;
+ const uint8_t* key;
+ if (!reader->Skip(4) || // flags -- ignore
+ !reader->ReadU24(isEncrypted) ||
+ !reader->ReadU8(mSinf.mDefaultIVSize) ||
+ !reader->Read(16, &key)) {
+ NS_WARNING("Failed to parse tenc data");
+ return;
+ }
+ memcpy(mSinf.mDefaultKeyID, key, 16);
}
}
diff --git a/media/libstagefright/binding/include/mp4_demuxer/Box.h b/media/libstagefright/binding/include/mp4_demuxer/Box.h
index f53404a1d..6612f6b49 100644
--- a/media/libstagefright/binding/include/mp4_demuxer/Box.h
+++ b/media/libstagefright/binding/include/mp4_demuxer/Box.h
@@ -12,7 +12,7 @@
#include "MediaResource.h"
#include "mozilla/EndianUtils.h"
#include "mp4_demuxer/AtomType.h"
-#include "mp4_demuxer/ByteReader.h"
+#include "mp4_demuxer/BufferReader.h"
using namespace mozilla;
@@ -73,11 +73,11 @@ public:
, mReader(mBuffer.Elements(), mBuffer.Length())
{
}
- ByteReader* operator->() { return &mReader; }
+ BufferReader* operator->() { return &mReader; }
private:
nsTArray<uint8_t> mBuffer;
- ByteReader mReader;
+ BufferReader mReader;
};
}
diff --git a/media/libstagefright/binding/include/mp4_demuxer/BufferReader.h b/media/libstagefright/binding/include/mp4_demuxer/BufferReader.h
new file mode 100644
index 000000000..160c97fa0
--- /dev/null
+++ b/media/libstagefright/binding/include/mp4_demuxer/BufferReader.h
@@ -0,0 +1,225 @@
+/* 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/. */
+
+#ifndef BUFFER_READER_H_
+#define BUFFER_READER_H_
+
+#include "mozilla/EndianUtils.h"
+#include "mozilla/Vector.h"
+#include "nsTArray.h"
+#include "MediaData.h"
+
+namespace mp4_demuxer {
+
+class MOZ_RAII BufferReader
+{
+public:
+ BufferReader() : mPtr(nullptr), mRemaining(0) {}
+ explicit BufferReader(const mozilla::Vector<uint8_t>& aData)
+ : mPtr(aData.begin()), mRemaining(aData.length()), mLength(aData.length())
+ {
+ }
+ BufferReader(const uint8_t* aData, size_t aSize)
+ : mPtr(aData), mRemaining(aSize), mLength(aSize)
+ {
+ }
+ template<size_t S>
+ explicit BufferReader(const AutoTArray<uint8_t, S>& aData)
+ : mPtr(aData.Elements()), mRemaining(aData.Length()), mLength(aData.Length())
+ {
+ }
+ explicit BufferReader(const nsTArray<uint8_t>& aData)
+ : mPtr(aData.Elements()), mRemaining(aData.Length()), mLength(aData.Length())
+ {
+ }
+ explicit BufferReader(const mozilla::MediaByteBuffer* aData)
+ : mPtr(aData->Elements()), mRemaining(aData->Length()), mLength(aData->Length())
+ {
+ }
+
+ void SetData(const nsTArray<uint8_t>& aData)
+ {
+ MOZ_ASSERT(!mPtr && !mRemaining);
+ mPtr = aData.Elements();
+ mRemaining = aData.Length();
+ mLength = mRemaining;
+ }
+
+ ~BufferReader()
+ {
+ }
+
+ size_t Offset() const
+ {
+ return mLength - mRemaining;
+ }
+
+ size_t Remaining() const { return mRemaining; }
+
+ bool CanRead8() const { return mRemaining >= 1; }
+
+ bool ReadU8(uint8_t& aU8)
+ {
+ const uint8_t* ptr;
+ if (!Read(1, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ aU8 = *ptr;
+ return true;
+ }
+
+ bool CanRead16() { return mRemaining >= 2; }
+
+ bool ReadU16(uint16_t& u16)
+ {
+ const uint8_t* ptr;
+ if (!Read(2, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ u16 = mozilla::BigEndian::readUint16(ptr);
+ return true;
+ }
+
+ bool CanRead32() { return mRemaining >= 4; }
+
+ bool ReadU32(uint32_t& u32)
+ {
+ const uint8_t* ptr;
+ if (!Read(4, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ u32 = mozilla::BigEndian::readUint32(ptr);
+ return true;
+ }
+
+ bool Read32(int32_t& i32)
+ {
+ const uint8_t* ptr;
+ if (!Read(4, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return 0;
+ }
+ i32 = mozilla::BigEndian::readInt32(ptr);
+ return true;
+ }
+
+ bool ReadU64(uint64_t& u64)
+ {
+ const uint8_t* ptr;
+ if (!Read(8, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ u64 = mozilla::BigEndian::readUint64(ptr);
+ return true;
+ }
+
+ bool Read64(int64_t& i64)
+ {
+ const uint8_t* ptr;
+ if (!Read(8, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ i64 = mozilla::BigEndian::readInt64(ptr);
+ return true;
+ }
+
+ bool ReadU24(uint32_t& u32)
+ {
+ const uint8_t* ptr;
+ if (!Read(3, &ptr)) {
+ NS_WARNING("Failed to read data");
+ return false;
+ }
+ u32 = ptr[0] << 16 | ptr[1] << 8 | ptr[2];
+ return true;
+ }
+
+ bool Skip(size_t aCount)
+ {
+ const uint8_t* ptr;
+ if (!Read(aCount, &ptr)) {
+ NS_WARNING("Failed to skip data");
+ return false;
+ }
+ return true;
+ }
+
+ bool Read(size_t aCount, const uint8_t** aPtr)
+ {
+ if (aCount > mRemaining) {
+ mRemaining = 0;
+ return false;
+ }
+ mRemaining -= aCount;
+
+ *aPtr = mPtr;
+ mPtr += aCount;
+
+ return true;
+ }
+
+ uint32_t Align() const
+ {
+ return 4 - ((intptr_t)mPtr & 3);
+ }
+
+ template <typename T> bool CanReadType() const { return mRemaining >= sizeof(T); }
+
+ template <typename T> T ReadType()
+ {
+ const uint8_t* ptr;
+ if (!Read(sizeof(T), &ptr)) {
+ NS_WARNING("ReadType failed");
+ return 0;
+ }
+ return *reinterpret_cast<const T*>(ptr);
+ }
+
+ template <typename T>
+ MOZ_MUST_USE bool ReadArray(nsTArray<T>& aDest, size_t aLength)
+ {
+ const uint8_t* ptr;
+ if (!Read(aLength * sizeof(T), &ptr)) {
+ NS_WARNING("ReadArray failed");
+ return false;
+ }
+
+ aDest.Clear();
+ aDest.AppendElements(reinterpret_cast<const T*>(ptr), aLength);
+ return true;
+ }
+
+ template <typename T>
+ MOZ_MUST_USE bool ReadArray(FallibleTArray<T>& aDest, size_t aLength)
+ {
+ const uint8_t* ptr;
+ if (!Read(aLength * sizeof(T), &ptr)) {
+ NS_WARNING("ReadArray failed");
+ return false;
+ }
+
+ aDest.Clear();
+ if (!aDest.SetCapacity(aLength, mozilla::fallible)) {
+ return false;
+ }
+ MOZ_ALWAYS_TRUE(aDest.AppendElements(reinterpret_cast<const T*>(ptr),
+ aLength,
+ mozilla::fallible));
+ return true;
+ }
+
+private:
+ const uint8_t* mPtr;
+ size_t mRemaining;
+ size_t mLength;
+};
+
+} // namespace mp4_demuxer
+
+#endif
diff --git a/media/libstagefright/binding/include/mp4_demuxer/ByteReader.h b/media/libstagefright/binding/include/mp4_demuxer/ByteReader.h
index 9c7df04bd..f316daa41 100644
--- a/media/libstagefright/binding/include/mp4_demuxer/ByteReader.h
+++ b/media/libstagefright/binding/include/mp4_demuxer/ByteReader.h
@@ -63,7 +63,7 @@ public:
{
auto ptr = Read(1);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return *ptr;
@@ -75,7 +75,7 @@ public:
{
auto ptr = Read(2);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::BigEndian::readUint16(ptr);
@@ -85,7 +85,7 @@ public:
{
auto ptr = Read(2);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::LittleEndian::readInt16(ptr);
@@ -95,7 +95,7 @@ public:
{
auto ptr = Read(3);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return ptr[0] << 16 | ptr[1] << 8 | ptr[2];
@@ -110,7 +110,7 @@ public:
{
auto ptr = Read(3);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
int32_t result = int32_t(ptr[2] << 16 | ptr[1] << 8 | ptr[0]);
@@ -126,7 +126,7 @@ public:
{
auto ptr = Read(4);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::BigEndian::readUint32(ptr);
@@ -136,7 +136,7 @@ public:
{
auto ptr = Read(4);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::BigEndian::readInt32(ptr);
@@ -146,7 +146,7 @@ public:
{
auto ptr = Read(8);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::BigEndian::readUint64(ptr);
@@ -156,7 +156,7 @@ public:
{
auto ptr = Read(8);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to read data");
return 0;
}
return mozilla::BigEndian::readInt64(ptr);
@@ -192,7 +192,7 @@ public:
{
auto ptr = Peek(1);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return *ptr;
@@ -202,7 +202,7 @@ public:
{
auto ptr = Peek(2);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return mozilla::BigEndian::readUint16(ptr);
@@ -212,7 +212,7 @@ public:
{
auto ptr = Peek(3);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return ptr[0] << 16 | ptr[1] << 8 | ptr[2];
@@ -227,7 +227,7 @@ public:
{
auto ptr = Peek(4);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return mozilla::BigEndian::readUint32(ptr);
@@ -237,7 +237,7 @@ public:
{
auto ptr = Peek(4);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return mozilla::BigEndian::readInt32(ptr);
@@ -247,7 +247,7 @@ public:
{
auto ptr = Peek(8);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return mozilla::BigEndian::readUint64(ptr);
@@ -257,7 +257,7 @@ public:
{
auto ptr = Peek(8);
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("Failed to peek data");
return 0;
}
return mozilla::BigEndian::readInt64(ptr);
@@ -274,7 +274,7 @@ public:
const uint8_t* Seek(size_t aOffset)
{
if (aOffset >= mLength) {
- MOZ_ASSERT(false);
+ NS_WARNING("Seek failed");
return nullptr;
}
@@ -301,7 +301,7 @@ public:
{
auto ptr = Read(sizeof(T));
if (!ptr) {
- MOZ_ASSERT(false);
+ NS_WARNING("ReadType failed");
return 0;
}
return *reinterpret_cast<const T*>(ptr);
@@ -312,6 +312,7 @@ public:
{
auto ptr = Read(aLength * sizeof(T));
if (!ptr) {
+ NS_WARNING("ReadArray failed");
return false;
}
@@ -325,6 +326,7 @@ public:
{
auto ptr = Read(aLength * sizeof(T));
if (!ptr) {
+ NS_WARNING("ReadArray failed");
return false;
}
diff --git a/media/libstagefright/moz.build b/media/libstagefright/moz.build
index c6072d840..5a8c9521a 100644
--- a/media/libstagefright/moz.build
+++ b/media/libstagefright/moz.build
@@ -53,6 +53,7 @@ EXPORTS.mp4_demuxer += [
'binding/include/mp4_demuxer/Atom.h',
'binding/include/mp4_demuxer/AtomType.h',
'binding/include/mp4_demuxer/BitReader.h',
+ 'binding/include/mp4_demuxer/BufferReader.h',
'binding/include/mp4_demuxer/BufferStream.h',
'binding/include/mp4_demuxer/ByteReader.h',
'binding/include/mp4_demuxer/ByteWriter.h',
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-28 15:05:01 +0000