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/*
Audio File Library
Copyright (C) 2012, Michael Pruett <michael@68k.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <audiofile.h>
#include <gtest/gtest.h>
#include <stdint.h>
#include <stdio.h>
#include <cstdlib>
#include <unistd.h>
#include "TestUtilities.h"
static const int kIMABytesPerPacketQT = 34;
static const int kIMABytesPerPacketWAVE = 256;
static const int kIMAFramesPerPacketQT = 64;
static const int kIMAFramesPerPacketWAVE = 505;
static const int kIMAThresholdQT = 128;
static const int kIMAThresholdWAVE = 16;
static const int kMSADPCMBytesPerPacket = 256;
static const int kMSADPCMFramesPerPacket = 500;
static const int kMSADPCMThreshold = 16;
static void testADPCM(int fileFormat, int compressionFormat, int channelCount,
int bytesPerPacket, int framesPerPacket, int frameCount, int threshold)
{
std::string testFileName;
ASSERT_TRUE(createTemporaryFile("ADPCM", &testFileName));
AFfilesetup setup = afNewFileSetup();
afInitFileFormat(setup, fileFormat);
afInitChannels(setup, AF_DEFAULT_TRACK, channelCount);
afInitCompression(setup, AF_DEFAULT_TRACK, compressionFormat);
AFfilehandle file = afOpenFile(testFileName.c_str(), "w", setup);
ASSERT_TRUE(file);
afFreeFileSetup(setup);
int16_t *data = new int16_t[frameCount * channelCount];
for (int i=0; i<frameCount; i++)
for (int c=0; c<channelCount; c++)
data[i*channelCount + c] = i * ((c&1) ? -1 : 1);
AFframecount framesWritten = afWriteFrames(file, AF_DEFAULT_TRACK, data, frameCount);
ASSERT_EQ(framesWritten, frameCount);
ASSERT_EQ(afCloseFile(file), 0);
file = afOpenFile(testFileName.c_str(), "r", AF_NULL_FILESETUP);
ASSERT_TRUE(file);
ASSERT_EQ(afGetCompression(file, AF_DEFAULT_TRACK), compressionFormat);
ASSERT_EQ(afGetFrameCount(file, AF_DEFAULT_TRACK), frameCount);
ASSERT_EQ(afGetTrackBytes(file, AF_DEFAULT_TRACK),
(bytesPerPacket * frameCount) / framesPerPacket);
int16_t *readData = new int16_t[frameCount * channelCount];
AFframecount framesRead = afReadFrames(file, AF_DEFAULT_TRACK, readData, frameCount);
ASSERT_EQ(framesRead, frameCount);
for (int i=0; i<frameCount; i++)
for (int c=0; c<channelCount; c++)
EXPECT_LE(std::abs(data[i*channelCount + c] - readData[i*channelCount + c]), threshold);
int16_t *offsetReadData = new int16_t[frameCount * channelCount];
// Read entire file with a seek before each read operation.
for (AFframecount offset = 0; offset < frameCount; offset += framesPerPacket + 3)
{
ASSERT_EQ(afSeekFrame(file, AF_DEFAULT_TRACK, offset), offset);
AFframecount framesToRead = 1091;
framesRead = afReadFrames(file, AF_DEFAULT_TRACK, offsetReadData, framesToRead);
ASSERT_EQ(framesRead, std::min(framesToRead, frameCount - offset));
for (int i=0; i<framesRead; i++)
for (int c=0; c<channelCount; c++)
EXPECT_EQ(readData[(i+offset)*channelCount + c],
offsetReadData[i*channelCount + c]);
}
// Read entire file sequentially in multiple read operations.
ASSERT_EQ(afSeekFrame(file, AF_DEFAULT_TRACK, 0), 0);
AFframecount framesToRead = 1087;
for (AFframecount offset = 0; offset < frameCount; offset += framesToRead)
{
framesRead = afReadFrames(file, AF_DEFAULT_TRACK, offsetReadData, framesToRead);
ASSERT_EQ(framesRead, std::min(framesToRead, frameCount - offset));
for (int i=0; i<framesRead; i++)
for (int c=0; c<channelCount; c++)
EXPECT_EQ(readData[(i+offset)*channelCount + c],
offsetReadData[i*channelCount + c]);
}
ASSERT_EQ(afCloseFile(file), 0);
delete [] data;
delete [] readData;
delete [] offsetReadData;
ASSERT_EQ(::unlink(testFileName.c_str()), 0);
}
TEST(IMA, CAF)
{
for (int channelCount=1; channelCount<=2; channelCount++)
testADPCM(AF_FILE_CAF, AF_COMPRESSION_IMA, channelCount,
channelCount * kIMABytesPerPacketQT, kIMAFramesPerPacketQT,
500 * kIMAFramesPerPacketQT, kIMAThresholdQT);
}
TEST(IMA, AIFFC)
{
for (int channelCount=1; channelCount<=2; channelCount++)
testADPCM(AF_FILE_AIFFC, AF_COMPRESSION_IMA, channelCount,
channelCount * kIMABytesPerPacketQT, kIMAFramesPerPacketQT,
500 * kIMAFramesPerPacketQT, kIMAThresholdQT);
}
TEST(IMA, WAVE)
{
for (int channelCount=1; channelCount<=2; channelCount++)
testADPCM(AF_FILE_WAVE, AF_COMPRESSION_IMA, channelCount,
channelCount * kIMABytesPerPacketWAVE, kIMAFramesPerPacketWAVE,
50 * kIMAFramesPerPacketWAVE, kIMAThresholdWAVE);
}
TEST(MSADPCM, WAVE)
{
for (int channelCount=1; channelCount<=2; channelCount++)
testADPCM(AF_FILE_WAVE, AF_COMPRESSION_MS_ADPCM, channelCount,
channelCount * kMSADPCMBytesPerPacket, kMSADPCMFramesPerPacket,
50 * kMSADPCMFramesPerPacket, kMSADPCMThreshold);
}
int main(int argc, char **argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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