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///////////////////////////////////////////////////////////////////////////

#include "dpx_file.hh"

#include <dpx.hh>
#include <fstream>
#include <Iex.h>

bool dpx_read(const char *name, float scale, ctl::dpx::fb<float> *pixels,
              format_t *format) {
	std::ifstream file;
	ctl::dpx dpxheader;

	file.open(name);

	if (file.fail())
	{
		THROW(Iex::ArgExc, "dpx_read() cannot open input file " << std::string(name));
		return 0;
	}

	if(!ctl::dpx::check_magic(&file)) {
		return 0;
	}
	
	dpxheader.read(&file);	
	dpxheader.read(&file, 0, pixels, scale);

	format->src_bps=dpxheader.elements[0].bits_per_sample;
	pixels->swizzle(dpxheader.elements[0].descriptor, FALSE);

	return 1;
}

void dpx_write(const char *name, float scale, const ctl::dpx::fb<float> &pixels,
               format_t *format) {
	std::ofstream file;
	ctl::dpx dpxheader;

	file.open(name);

	if (file.fail())
	{
	  THROW(Iex::ArgExc, "dpx_write() cannot open output file " << std::string(name));
	  return;
	}

	dpxheader.elements[0].data_sign=0;
	dpxheader.elements[0].bits_per_sample=format->bps;
	dpxheader.write(&file, 0, pixels, scale);
	dpxheader.write(&file);	
}

