void WavImporter::doOpenData(Containers::ArrayReference<const unsigned char> data) {
/* Check file size */
if(data.size() < sizeof(WavHeader)) {
Error() << "Audio::WavImporter::openData(): the file is too short:" << data.size() << "bytes";
return;
}
/* Get header contents and fix endianness */
WavHeader header(*reinterpret_cast<const WavHeader*>(data.begin()));
Utility::Endianness::littleEndianInPlace(header.chunkSize,
header.subChunk1Size, header.audioFormat, header.numChannels,
header.sampleRate, header.byteRate, header.blockAlign,
header.bitsPerSample, header.subChunk2Size);
/* Check file signature */
if(std::strncmp(header.chunkId, "RIFF", 4) != 0 ||
std::strncmp(header.format, "WAVE", 4) != 0 ||
std::strncmp(header.subChunk1Id, "fmt ", 4) != 0 ||
std::strncmp(header.subChunk2Id, "data", 4) != 0) {
Error() << "Audio::WavImporter::openData(): the file signature is invalid";
return;
}
/* Check file size */
if(header.chunkSize + 8 != data.size()) {
Error() << "Audio::WavImporter::openData(): the file has improper size, expected"
<< header.chunkSize + 8 << "but got" << data.size();
return;
}
/* Check PCM format */
if(header.audioFormat != 1) {
Error() << "Audio::WavImporter::openData(): unsupported audio format" << header.audioFormat;
return;
}
/* Verify more things */
if(header.subChunk1Size != 16 ||
header.subChunk2Size + 44 != data.size() ||
header.blockAlign != header.numChannels*header.bitsPerSample/8 ||
header.byteRate != header.sampleRate*header.blockAlign) {
Error() << "Audio::WavImporter::openData(): the file is corrupted";
return;
}
/* Decide about format */
if(header.numChannels == 1 && header.bitsPerSample == 8)
_format = Buffer::Format::Mono8;
else if(header.numChannels == 1 && header.bitsPerSample == 16)
_format = Buffer::Format::Mono16;
else if(header.numChannels == 2 && header.bitsPerSample == 8)
_format = Buffer::Format::Stereo8;
else if(header.numChannels == 2 && header.bitsPerSample == 16)
_format = Buffer::Format::Stereo16;
else {
Error() << "Audio::WavImporter::openData(): unsupported channel count"
<< header.numChannels << "with" << header.bitsPerSample
<< "bits per sample";
return;
}
/* Save frequency */
_frequency = header.sampleRate;
/** @todo Convert the data from little endian too */
CORRADE_INTERNAL_ASSERT(!Utility::Endianness::isBigEndian());
/* Copy the data */
_data = Containers::Array<unsigned char>(header.subChunk2Size);
std::copy(data.begin()+sizeof(WavHeader), data.end(), _data.begin());
return;
}
std::string Resource::get(const std::string& filename) const {
Containers::ArrayReference<const unsigned char> data = getRaw(filename);
return data ? std::string(reinterpret_cast<const char*>(data.begin()), data.size()) : std::string();
}
void JpegImporter::doOpenData(const Containers::ArrayReference<const unsigned char> data) {
_in = Containers::Array<unsigned char>(data.size());
std::copy(data.begin(), data.end(), _in.begin());
}
void PngImporter::doOpenData(const Containers::ArrayReference<const unsigned char> data) {
_in = new std::istringstream(std::string(reinterpret_cast<const char*>(data.begin()), data.size()));
}
void StbImageImporter::doOpenData(const Containers::ArrayReference<const char> data) {
_in = Containers::Array<unsigned char>{data.size()};
std::copy(data.begin(), data.end(), _in.data());
}