Function iJp2WriteStream

DevIL/src-IL/src/il_jp2.cpp:502–533

jas_stream_t *iJp2WriteStream()
{
	jas_stream_t *stream;
	jas_stream_memobj_t *obj;

	if (!(stream = jas_stream_create())) {
		return 0;
	}

	/* A stream associated with a memory buffer is always opened
	for both reading and writing in binary mode. */
	stream->openmode_ = JAS_STREAM_WRITE | JAS_STREAM_BINARY;

	/* We use buffering whether it is from memory or a file. */
	jas_stream_initbuf(stream, JAS_STREAM_FULLBUF);

	/* Select the operations for a memory stream. */
	stream->ops_ = &jas_stream_devilops;

	/* Allocate memory for the underlying memory stream object. */
	if (!(obj = (jas_stream_memobj_t*)jas_malloc(sizeof(jas_stream_memobj_t)))) {
		jas_stream_destroy(stream);
		return 0;
	}
	stream->obj_ = (void *) obj;

	/* Initialize a few important members of the memory stream object. */
	obj->myalloc_ = 0;
	obj->buf_ = 0;
	
	return stream;
}