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// Copyright (c) 2009 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 "base/logging.h"
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "base/time.h"
#include "media/audio/simple_sources.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
void GenerateRandomData(char* buffer, size_t len) {
static bool called = false;
if (!called) {
called = true;
int seed = static_cast<int>(base::Time::Now().ToInternalValue());
srand(seed);
LOG(INFO) << "Random seed: " << seed;
}
for (size_t i = 0; i < len; i++) {
buffer[i] = static_cast<char>(rand());
}
}
} // namespace
// To test write size smaller than read size.
TEST(SimpleSourcesTest, PushSourceSmallerWrite) {
const size_t kDataSize = 40960;
scoped_array<char> data(new char[kDataSize]);
GenerateRandomData(data.get(), kDataSize);
// Choose two prime numbers for read and write sizes.
const size_t kWriteSize = 283;
const size_t kReadSize = 293;
scoped_array<char> read_data(new char[kReadSize]);
// Create a PushSource that assumes the hardware audio buffer size is always
// bigger than the write size.
PushSource push_source(kReadSize);
EXPECT_EQ(0u, push_source.UnProcessedBytes());
// Write everything into this push source.
for (size_t i = 0; i < kDataSize; i += kWriteSize) {
size_t size = std::min(kDataSize - i, kWriteSize);
EXPECT_TRUE(push_source.Write(data.get() + i, size));
}
EXPECT_EQ(kDataSize, push_source.UnProcessedBytes());
// Read everything from the push source.
for (size_t i = 0; i < kDataSize; i += kReadSize) {
size_t size = std::min(kDataSize - i , kReadSize);
EXPECT_EQ(size, push_source.OnMoreData(NULL, read_data.get(), size));
EXPECT_EQ(0, memcmp(data.get() + i, read_data.get(), size));
}
EXPECT_EQ(0u, push_source.UnProcessedBytes());
push_source.OnClose(NULL);
}
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