f866b2d9f9
Karl pointed out that the user can check the validity of the input parameters with CheckWavParameters prior to calling. TBR=kwiberg Review URL: https://webrtc-codereview.appspot.com/23339004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@7597 4adac7df-926f-26a2-2b94-8c16560cd09d
164 lines
6.5 KiB
C++
164 lines
6.5 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <limits>
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#include "testing/gtest/include/gtest/gtest.h"
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#include "webrtc/common_audio/wav_header.h"
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#include "webrtc/system_wrappers/interface/compile_assert.h"
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// Try various choices of WAV header parameters, and make sure that the good
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// ones are accepted and the bad ones rejected.
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TEST(WavHeaderTest, CheckWavParameters) {
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// Try some really stupid values for one parameter at a time.
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EXPECT_TRUE(webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 1, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(0, 8000, webrtc::kWavFormatPcm, 1, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(-1, 8000, webrtc::kWavFormatPcm, 1, 0));
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EXPECT_FALSE(webrtc::CheckWavParameters(1, 0, webrtc::kWavFormatPcm, 1, 0));
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EXPECT_FALSE(webrtc::CheckWavParameters(1, 8000, webrtc::WavFormat(0), 1, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 0, 0));
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// Try invalid format/bytes-per-sample combinations.
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EXPECT_TRUE(webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 2, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatPcm, 4, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatALaw, 2, 0));
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EXPECT_FALSE(
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webrtc::CheckWavParameters(1, 8000, webrtc::kWavFormatMuLaw, 2, 0));
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// Too large values.
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EXPECT_FALSE(webrtc::CheckWavParameters(
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1 << 20, 1 << 20, webrtc::kWavFormatPcm, 1, 0));
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EXPECT_FALSE(webrtc::CheckWavParameters(
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1, 8000, webrtc::kWavFormatPcm, 1, std::numeric_limits<uint32_t>::max()));
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// Not the same number of samples for each channel.
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EXPECT_FALSE(
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webrtc::CheckWavParameters(3, 8000, webrtc::kWavFormatPcm, 1, 5));
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}
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TEST(WavHeaderTest, ReadWavHeaderWithErrors) {
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int num_channels = 0;
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int sample_rate = 0;
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webrtc::WavFormat format = webrtc::kWavFormatPcm;
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int bytes_per_sample = 0;
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uint32_t num_samples = 0;
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// Test a few ways the header can be invalid. We start with the valid header
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// used in WriteAndReadWavHeader, and invalidate one field per test. The
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// invalid field is indicated in the array name, and in the comments with
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// *BAD*.
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static const uint8_t kBadRiffID[] = {
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'R', 'i', 'f', 'f', // *BAD*
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0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8
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'W', 'A', 'V', 'E',
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'f', 'm', 't', ' ',
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16, 0, 0, 0, // size of fmt block - 8: 24 - 8
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6, 0, // format: A-law (6)
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17, 0, // channels: 17
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0x39, 0x30, 0, 0, // sample rate: 12345
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0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345
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17, 0, // block align: NumChannels * BytesPerSample
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8, 0, // bits per sample: 1 * 8
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'd', 'a', 't', 'a',
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0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689
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0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header
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};
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EXPECT_FALSE(
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webrtc::ReadWavHeader(kBadRiffID, &num_channels, &sample_rate,
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&format, &bytes_per_sample, &num_samples));
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static const uint8_t kBadBitsPerSample[] = {
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'R', 'I', 'F', 'F',
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0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8
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'W', 'A', 'V', 'E',
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'f', 'm', 't', ' ',
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16, 0, 0, 0, // size of fmt block - 8: 24 - 8
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6, 0, // format: A-law (6)
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17, 0, // channels: 17
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0x39, 0x30, 0, 0, // sample rate: 12345
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0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345
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17, 0, // block align: NumChannels * BytesPerSample
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1, 0, // bits per sample: *BAD*
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'd', 'a', 't', 'a',
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0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689
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0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header
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};
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EXPECT_FALSE(
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webrtc::ReadWavHeader(kBadBitsPerSample, &num_channels, &sample_rate,
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&format, &bytes_per_sample, &num_samples));
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static const uint8_t kBadByteRate[] = {
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'R', 'I', 'F', 'F',
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0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8
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'W', 'A', 'V', 'E',
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'f', 'm', 't', ' ',
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16, 0, 0, 0, // size of fmt block - 8: 24 - 8
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6, 0, // format: A-law (6)
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17, 0, // channels: 17
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0x39, 0x30, 0, 0, // sample rate: 12345
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0x00, 0x33, 0x03, 0, // byte rate: *BAD*
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17, 0, // block align: NumChannels * BytesPerSample
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8, 0, // bits per sample: 1 * 8
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'd', 'a', 't', 'a',
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0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689
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0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header
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};
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EXPECT_FALSE(
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webrtc::ReadWavHeader(kBadByteRate, &num_channels, &sample_rate,
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&format, &bytes_per_sample, &num_samples));
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}
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// Try writing and reading a valid WAV header and make sure it looks OK.
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TEST(WavHeaderTest, WriteAndReadWavHeader) {
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static const int kSize = 4 + webrtc::kWavHeaderSize + 4;
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uint8_t buf[kSize];
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memset(buf, 0xa4, sizeof(buf));
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webrtc::WriteWavHeader(
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buf + 4, 17, 12345, webrtc::kWavFormatALaw, 1, 123457689);
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static const uint8_t kExpectedBuf[] = {
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0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes before header
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'R', 'I', 'F', 'F',
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0xbd, 0xd0, 0x5b, 0x07, // size of whole file - 8: 123457689 + 44 - 8
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'W', 'A', 'V', 'E',
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'f', 'm', 't', ' ',
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16, 0, 0, 0, // size of fmt block - 8: 24 - 8
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6, 0, // format: A-law (6)
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17, 0, // channels: 17
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0x39, 0x30, 0, 0, // sample rate: 12345
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0xc9, 0x33, 0x03, 0, // byte rate: 1 * 17 * 12345
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17, 0, // block align: NumChannels * BytesPerSample
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8, 0, // bits per sample: 1 * 8
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'd', 'a', 't', 'a',
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0x99, 0xd0, 0x5b, 0x07, // size of payload: 123457689
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0xa4, 0xa4, 0xa4, 0xa4, // untouched bytes after header
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};
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COMPILE_ASSERT(sizeof(kExpectedBuf) == kSize, buf_size);
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EXPECT_EQ(0, memcmp(kExpectedBuf, buf, kSize));
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int num_channels = 0;
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int sample_rate = 0;
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webrtc::WavFormat format = webrtc::kWavFormatPcm;
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int bytes_per_sample = 0;
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uint32_t num_samples = 0;
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EXPECT_TRUE(
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webrtc::ReadWavHeader(buf + 4, &num_channels, &sample_rate, &format,
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&bytes_per_sample, &num_samples));
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EXPECT_EQ(17, num_channels);
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EXPECT_EQ(12345, sample_rate);
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EXPECT_EQ(webrtc::kWavFormatALaw, format);
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EXPECT_EQ(1, bytes_per_sample);
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EXPECT_EQ(123457689u, num_samples);
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}
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