Method write

wav.h:157–206

	}
	
	Result write(std::string filename, Format format=Format::PCM) {
		if (channels == 0 || channels > 65535) return result = Result(Result::Code::WEIRD_CONFIG, "Invalid channel count");
		if (sampleRate <= 0 || sampleRate > 0xFFFFFFFFu) return result = Result(Result::Code::WEIRD_CONFIG, "Invalid sample rate");
		
		std::ofstream file;
		file.open(filename, std::ios::binary);
		if (!file.is_open()) return result = Result(Result::Code::IO_ERROR, "Failed to open file: " + filename);
		
		int bytesPerSample;
		switch (format) {
		case Format::PCM:
			bytesPerSample = 2;
			break;
		}
		
		// File size - 44 bytes is RIFF header, "fmt" block, and "data" block header
		unsigned int dataLength = samples.size()*bytesPerSample;
		unsigned int fileLength = 44 + dataLength;

		// RIFF chunk
		write32(file, value_RIFF);
		write32(file, fileLength - 8); // File length, excluding the RIFF header
		write32(file, value_WAVE);
		// "fmt " block
		write32(file, value_fmt);
		write32(file, 16); // block length
		write16(file, (uint16_t)format);
		write16(file, channels);
		write32(file, sampleRate);
		unsigned int expectedBytesPerSecond = sampleRate*channels*bytesPerSample;
		write32(file, expectedBytesPerSecond);
		write16(file, channels*bytesPerSample); // Bytes per frame
		write16(file, bytesPerSample*8); // bist per sample
		
		// "data" block
		write32(file, value_data);
		write32(file, dataLength);
		switch (format) {
		case Format::PCM:
			for (unsigned int i = 0; i < samples.size(); i++) {
				double value = samples[i]*32768;
				if (value > 32767) value = 32767;
				if (value <= -32768) value = -32768;
				if (value < 0) value += 65536;
				write16(file, (uint16_t)value);
			}
			break;
		}
		return result = Result(Result::Code::OK);
	}
	
	void makeMono() {
		std::vector<double> newSamples(samples.size()/channels, 0);