C++ (Cpp) fz_fillbuffer Examples

Example #1

File: filt_flate.c Project: paradigm/paraPDF

static int
readflated(fz_stream *stm, unsigned char *outbuf, int outlen)
{
	fz_flate *state = stm->state;
	fz_stream *chain = state->chain;
	z_streamp zp = &state->z;
	int code;

	zp->next_out = outbuf;
	zp->avail_out = outlen;

	while (zp->avail_out > 0)
	{
		if (chain->rp == chain->wp)
			fz_fillbuffer(chain);

		zp->next_in = chain->rp;
		zp->avail_in = chain->wp - chain->rp;

		code = inflate(zp, Z_SYNC_FLUSH);

		chain->rp = chain->wp - zp->avail_in;

		if (code == Z_STREAM_END)
		{
			return outlen - zp->avail_out;
		}
		else if (code == Z_BUF_ERROR)
		{
			fz_warn("premature end of data in flate filter");
			return outlen - zp->avail_out;
		}
		else if (code == Z_DATA_ERROR && zp->avail_in == 0)
		{
			fz_warn("ignoring zlib error: %s", zp->msg);
			return outlen - zp->avail_out;
		}
		else if (code != Z_OK)
		{
			return fz_throw("zlib error: %s", zp->msg);
		}
	}

	return outlen - zp->avail_out;
}

Example #2

File: filt_dctd.c Project: MaChao5/pdfviewer-win32

static boolean fill_input_buffer(j_decompress_ptr cinfo)
{
	struct jpeg_source_mgr *src = cinfo->src;
	fz_dctd *state = cinfo->client_data;
	fz_stream *chain = state->chain;

	chain->rp = chain->wp;
	fz_fillbuffer(chain);
	src->next_input_byte = chain->rp;
	src->bytes_in_buffer = chain->wp - chain->rp;

	if (src->bytes_in_buffer == 0)
	{
		static unsigned char eoi[2] = { 0xFF, JPEG_EOI };
		fz_warn("premature end of file in jpeg");
		src->next_input_byte = eoi;
		src->bytes_in_buffer = 2;
	}

	return 1;
}