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// Copyright (c) 2012 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 <string.h>
#include "base/basictypes.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "media/mp4/box_reader.h"
#include "media/mp4/rcheck.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace mp4 {
static const uint8 kSkipBox[] = {
// Top-level test box containing three children
0x00, 0x00, 0x00, 0x40, 's', 'k', 'i', 'p',
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0xf9, 0x0a, 0x0b, 0x0c, 0xfd, 0x0e, 0x0f, 0x10,
// Ordinary (8-byte header) child box
0x00, 0x00, 0x00, 0x0c, 'p', 's', 's', 'h', 0xde, 0xad, 0xbe, 0xef,
// Extended-size header child box
0x00, 0x00, 0x00, 0x01, 'p', 's', 's', 'h',
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14,
0xfa, 0xce, 0xca, 0xfe,
// Empty free box
0x00, 0x00, 0x00, 0x08, 'f', 'r', 'e', 'e',
// Trailing garbage
0x00 };
struct FreeBox : Box {
virtual bool Parse(BoxReader* reader) OVERRIDE {
return true;
}
virtual FourCC BoxType() const OVERRIDE { return FOURCC_FREE; }
};
struct PsshBox : Box {
uint32 val;
virtual bool Parse(BoxReader* reader) OVERRIDE {
return reader->Read4(&val);
}
virtual FourCC BoxType() const OVERRIDE { return FOURCC_PSSH; }
};
struct SkipBox : Box {
uint8 a, b;
uint16 c;
int32 d;
int64 e;
std::vector<PsshBox> kids;
FreeBox mpty;
virtual bool Parse(BoxReader* reader) OVERRIDE {
RCHECK(reader->ReadFullBoxHeader() &&
reader->Read1(&a) &&
reader->Read1(&b) &&
reader->Read2(&c) &&
reader->Read4s(&d) &&
reader->Read4sInto8s(&e));
return reader->ScanChildren() &&
reader->ReadChildren(&kids) &&
reader->MaybeReadChild(&mpty);
}
virtual FourCC BoxType() const OVERRIDE { return FOURCC_SKIP; }
SkipBox();
~SkipBox();
};
SkipBox::SkipBox() {}
SkipBox::~SkipBox() {}
class BoxReaderTest : public testing::Test {
protected:
std::vector<uint8> GetBuf() {
return std::vector<uint8>(kSkipBox, kSkipBox + sizeof(kSkipBox));
}
};
TEST_F(BoxReaderTest, ExpectedOperationTest) {
std::vector<uint8> buf = GetBuf();
bool err;
scoped_ptr<BoxReader> reader(
BoxReader::ReadTopLevelBox(&buf[0], buf.size(), &err));
EXPECT_FALSE(err);
EXPECT_TRUE(reader.get());
SkipBox box;
EXPECT_TRUE(box.Parse(reader.get()));
EXPECT_EQ(0x01, reader->version());
EXPECT_EQ(0x020304u, reader->flags());
EXPECT_EQ(0x05, box.a);
EXPECT_EQ(0x06, box.b);
EXPECT_EQ(0x0708, box.c);
EXPECT_EQ(static_cast<int32>(0xf90a0b0c), box.d);
EXPECT_EQ(static_cast<int32>(0xfd0e0f10), box.e);
EXPECT_EQ(2u, box.kids.size());
EXPECT_EQ(0xdeadbeef, box.kids[0].val);
EXPECT_EQ(0xfacecafe, box.kids[1].val);
// Accounting for the extra byte outside of the box above
EXPECT_EQ(buf.size(), static_cast<uint64>(reader->size() + 1));
}
TEST_F(BoxReaderTest, OuterTooShortTest) {
std::vector<uint8> buf = GetBuf();
bool err;
// Create a soft failure by truncating the outer box.
scoped_ptr<BoxReader> r(
BoxReader::ReadTopLevelBox(&buf[0], buf.size() - 2, &err));
EXPECT_FALSE(err);
EXPECT_FALSE(r.get());
}
TEST_F(BoxReaderTest, InnerTooLongTest) {
std::vector<uint8> buf = GetBuf();
bool err;
// Make an inner box too big for its outer box.
buf[25] = 1;
scoped_ptr<BoxReader> reader(
BoxReader::ReadTopLevelBox(&buf[0], buf.size(), &err));
SkipBox box;
EXPECT_FALSE(box.Parse(reader.get()));
}
TEST_F(BoxReaderTest, WrongFourCCTest) {
std::vector<uint8> buf = GetBuf();
bool err;
// Set an unrecognized top-level FourCC.
buf[5] = 1;
scoped_ptr<BoxReader> reader(
BoxReader::ReadTopLevelBox(&buf[0], buf.size(), &err));
EXPECT_FALSE(reader.get());
EXPECT_TRUE(err);
}
TEST_F(BoxReaderTest, ChildrenTest) {
std::vector<uint8> buf = GetBuf();
bool err;
scoped_ptr<BoxReader> reader(
BoxReader::ReadTopLevelBox(&buf[0], buf.size(), &err));
EXPECT_TRUE(reader->SkipBytes(16) && reader->ScanChildren());
FreeBox free;
EXPECT_TRUE(reader->ReadChild(&free));
EXPECT_FALSE(reader->ReadChild(&free));
EXPECT_TRUE(reader->MaybeReadChild(&free));
std::vector<PsshBox> kids;
EXPECT_TRUE(reader->ReadAllChildren(&kids));
EXPECT_EQ(2u, kids.size());
kids.clear();
EXPECT_FALSE(reader->ReadChildren(&kids));
EXPECT_TRUE(reader->MaybeReadChildren(&kids));
}
} // namespace mp4
} // namespace media
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