| /* |
| * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <limits> |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "webrtc/common_audio/wav_header.h" |
| #include "webrtc/system_wrappers/interface/compile_assert.h" |
| |
| // Try various choices of WAV header parameters, and make sure that the good |
| // ones are accepted and the bad ones rejected. |
| TEST(WavHeaderTest, CheckWavParameters) { |
| // Try some really stupid values for one parameter at a time. |
| EXPECT_TRUE(webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 1, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(0, 8000, webrtc::kWavFormatPcm, 1, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(-1, 8000, webrtc::kWavFormatPcm, 1, 0)); |
| EXPECT_FALSE(webrtc::CheckWavParameters(1, 0, webrtc::kWavFormatPcm, 1, 0)); |
| EXPECT_FALSE(webrtc::CheckWavParameters(1, 8000, webrtc::WavFormat(0), 1, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 0, 0)); |
| |
| // Try invalid format/bytes-per-sample combinations. |
| EXPECT_TRUE(webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 2, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 4, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatALaw, 2, 0)); |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatMuLaw, 2, 0)); |
| |
| // Too large values. |
| EXPECT_FALSE(webrtc::CheckWavParameters( |
| 1 << 20, 1 << 20, webrtc::kWavFormatPcm, 1, 0)); |
| EXPECT_FALSE(webrtc::CheckWavParameters( |
| 1, 8000, webrtc::kWavFormatPcm, 1, std::numeric_limits<uint32_t>::max())); |
| |
| // Not the same number of samples for each channel. |
| EXPECT_FALSE( |
| webrtc::CheckWavParameters(3, 8000, webrtc::kWavFormatPcm, 1, 5)); |
| } |
| |
| TEST(WavHeaderTest, ReadWavHeaderWithErrors) { |
| int num_channels = 0; |
| int sample_rate = 0; |
| webrtc::WavFormat format = webrtc::kWavFormatPcm; |
| int bytes_per_sample = 0; |
| uint32_t num_samples = 0; |
| |
| // Test a few ways the header can be invalid. We start with the valid header |
| // used in WriteAndReadWavHeader, and invalidate one field per test. The |
| // invalid field is indicated in the array name, and in the comments with |
| // *BAD*. |
| static const uint8_t kBadRiffID[] = { |
| 'R', 'i', 'f', 'f', // *BAD* |
| 0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8 |
| 'W', 'A', 'V', 'E', |
| 'f', 'm', 't', ' ', |
| 16, 0, 0, 0, // size of fmt block - 8: 24 - 8 |
| 6, 0, // format: A-law (6) |
| 17, 0, // channels: 17 |
| 0x39, 0x30, 0, 0, // sample rate: 12345 |
| 0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345 |
| 17, 0, // block align: NumChannels * BytesPerSample |
| 8, 0, // bits per sample: 1 * 8 |
| 'd', 'a', 't', 'a', |
| 0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689 |
| 0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header |
| }; |
| EXPECT_FALSE( |
| webrtc::ReadWavHeader(kBadRiffID, &num_channels, &sample_rate, |
| &format, &bytes_per_sample, &num_samples)); |
| |
| static const uint8_t kBadBitsPerSample[] = { |
| 'R', 'I', 'F', 'F', |
| 0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8 |
| 'W', 'A', 'V', 'E', |
| 'f', 'm', 't', ' ', |
| 16, 0, 0, 0, // size of fmt block - 8: 24 - 8 |
| 6, 0, // format: A-law (6) |
| 17, 0, // channels: 17 |
| 0x39, 0x30, 0, 0, // sample rate: 12345 |
| 0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345 |
| 17, 0, // block align: NumChannels * BytesPerSample |
| 1, 0, // bits per sample: *BAD* |
| 'd', 'a', 't', 'a', |
| 0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689 |
| 0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header |
| }; |
| EXPECT_FALSE( |
| webrtc::ReadWavHeader(kBadBitsPerSample, &num_channels, &sample_rate, |
| &format, &bytes_per_sample, &num_samples)); |
| |
| static const uint8_t kBadByteRate[] = { |
| 'R', 'I', 'F', 'F', |
| 0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8 |
| 'W', 'A', 'V', 'E', |
| 'f', 'm', 't', ' ', |
| 16, 0, 0, 0, // size of fmt block - 8: 24 - 8 |
| 6, 0, // format: A-law (6) |
| 17, 0, // channels: 17 |
| 0x39, 0x30, 0, 0, // sample rate: 12345 |
| 0x00, 0x33, 0x03, 0, // byte rate: *BAD* |
| 17, 0, // block align: NumChannels * BytesPerSample |
| 8, 0, // bits per sample: 1 * 8 |
| 'd', 'a', 't', 'a', |
| 0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689 |
| 0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header |
| }; |
| EXPECT_FALSE( |
| webrtc::ReadWavHeader(kBadByteRate, &num_channels, &sample_rate, |
| &format, &bytes_per_sample, &num_samples)); |
| } |
| |
| // Try writing and reading a valid WAV header and make sure it looks OK. |
| TEST(WavHeaderTest, WriteAndReadWavHeader) { |
| static const int kSize = 4 + webrtc::kWavHeaderSize + 4; |
| uint8_t buf[kSize]; |
| memset(buf, 0xa4, sizeof(buf)); |
| webrtc::WriteWavHeader( |
| buf + 4, 17, 12345, webrtc::kWavFormatALaw, 1, 123457689); |
| static const uint8_t kExpectedBuf[] = { |
| 0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes before header |
| 'R', 'I', 'F', 'F', |
| 0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8 |
| 'W', 'A', 'V', 'E', |
| 'f', 'm', 't', ' ', |
| 16, 0, 0, 0, // size of fmt block - 8: 24 - 8 |
| 6, 0, // format: A-law (6) |
| 17, 0, // channels: 17 |
| 0x39, 0x30, 0, 0, // sample rate: 12345 |
| 0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345 |
| 17, 0, // block align: NumChannels * BytesPerSample |
| 8, 0, // bits per sample: 1 * 8 |
| 'd', 'a', 't', 'a', |
| 0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689 |
| 0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header |
| }; |
| COMPILE_ASSERT(sizeof(kExpectedBuf) == kSize, buf_size); |
| EXPECT_EQ(0, memcmp(kExpectedBuf, buf, kSize)); |
| |
| int num_channels = 0; |
| int sample_rate = 0; |
| webrtc::WavFormat format = webrtc::kWavFormatPcm; |
| int bytes_per_sample = 0; |
| uint32_t num_samples = 0; |
| EXPECT_TRUE( |
| webrtc::ReadWavHeader(buf + 4, &num_channels, &sample_rate, &format, |
| &bytes_per_sample, &num_samples)); |
| EXPECT_EQ(17, num_channels); |
| EXPECT_EQ(12345, sample_rate); |
| EXPECT_EQ(webrtc::kWavFormatALaw, format); |
| EXPECT_EQ(1, bytes_per_sample); |
| EXPECT_EQ(123457689u, num_samples); |
| } |