Take pdf_obj argument to pdf_is_stream.

9 files changed, 22 insertions, 15 deletions

diff --git a/source/pdf/pdf-annot-edit.c b/source/pdf/pdf-annot-edit.c
index 06b3495e..66704a2f 100644
--- a/source/pdf/pdf-annot-edit.c
+++ b/source/pdf/pdf-annot-edit.c
@@ -65,13 +65,13 @@ pdf_update_annot(fz_context *ctx, pdf_document *doc, pdf_annot *annot)
 			n = pdf_dict_get(ctx, ap, PDF_NAME_N); /* normal state */
 
 		/* lookup current state in sub-dictionary */
-		if (!pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
+		if (!pdf_is_stream(ctx, n))
 			n = pdf_dict_get(ctx, n, as);
 
 		pdf_drop_xobject(ctx, annot->ap);
 		annot->ap = NULL;
 
-		if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
+		if (pdf_is_stream(ctx, n))
 		{
 			fz_try(ctx)
 			{
diff --git a/source/pdf/pdf-annot.c b/source/pdf/pdf-annot.c
index f8e6a770..5261bdb0 100644
--- a/source/pdf/pdf-annot.c
+++ b/source/pdf/pdf-annot.c
@@ -569,7 +569,7 @@ pdf_load_annots(fz_context *ctx, pdf_document *doc, pdf_page *page, pdf_obj *ann
 				n = pdf_dict_get(ctx, ap, PDF_NAME_N); /* normal state */
 
 			/* lookup current state in sub-dictionary */
-			if (!pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
+			if (!pdf_is_stream(ctx, n))
 				n = pdf_dict_get(ctx, n, as);
 
 			pdf_to_rect(ctx, rect, &annot->rect);
@@ -579,7 +579,7 @@ pdf_load_annots(fz_context *ctx, pdf_document *doc, pdf_page *page, pdf_obj *ann
 			annot->annot_type = pdf_annot_obj_type(ctx, obj);
 			annot->widget_type = annot->annot_type == FZ_ANNOT_WIDGET ? pdf_field_type(ctx, doc, obj) : PDF_WIDGET_TYPE_NOT_WIDGET;
 
-			if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
+			if (pdf_is_stream(ctx, n))
 			{
 				annot->ap = pdf_load_xobject(ctx, doc, n);
 				pdf_transform_annot(ctx, annot);
diff --git a/source/pdf/pdf-appearance.c b/source/pdf/pdf-appearance.c
index 49de8cf9..6ddf3240 100644
--- a/source/pdf/pdf-appearance.c
+++ b/source/pdf/pdf-appearance.c
@@ -1597,7 +1597,7 @@ void pdf_set_annot_appearance(fz_context *ctx, pdf_document *doc, pdf_annot *ann
 
 		/* See if there is a current normal appearance */
 		ap_obj = pdf_dict_getl(ctx, obj, PDF_NAME_AP, PDF_NAME_N, NULL);
-		if (!pdf_is_stream(ctx, doc, pdf_to_num(ctx, ap_obj), pdf_to_gen(ctx, ap_obj)))
+		if (!pdf_is_stream(ctx, ap_obj))
 			ap_obj = NULL;
 
 		if (ap_obj == NULL)
diff --git a/source/pdf/pdf-field.c b/source/pdf/pdf-field.c
index fc49d9dd..7e91cb1e 100644
--- a/source/pdf/pdf-field.c
+++ b/source/pdf/pdf-field.c
@@ -31,7 +31,7 @@ char *pdf_get_string_or_stream(fz_context *ctx, pdf_document *doc, pdf_obj *obj)
 			len = pdf_to_str_len(ctx, obj);
 			buf = pdf_to_str_buf(ctx, obj);
 		}
-		else if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj)))
+		else if (pdf_is_stream(ctx, obj))
 		{
 			stmbuf = pdf_load_stream(ctx, doc, pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
 			len = fz_buffer_storage(ctx, stmbuf, (unsigned char **)&buf);
diff --git a/source/pdf/pdf-parse.c b/source/pdf/pdf-parse.c
index 9d9af31d..3761e3ce 100644
--- a/source/pdf/pdf-parse.c
+++ b/source/pdf/pdf-parse.c
@@ -65,7 +65,7 @@ pdf_to_utf8(fz_context *ctx, pdf_document *doc, pdf_obj *src)
 			srcptr = (unsigned char *) pdf_to_str_buf(ctx, src);
 			srclen = pdf_to_str_len(ctx, src);
 		}
-		else if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, src), pdf_to_gen(ctx, src)))
+		else if (pdf_is_stream(ctx, src))
 		{
 			stmbuf = pdf_load_stream(ctx, doc, pdf_to_num(ctx, src), pdf_to_gen(ctx, src));
 			srclen = fz_buffer_storage(ctx, stmbuf, (unsigned char **)&srcptr);
diff --git a/source/pdf/pdf-stream.c b/source/pdf/pdf-stream.c
index 4636a1a7..57167eda 100644
--- a/source/pdf/pdf-stream.c
+++ b/source/pdf/pdf-stream.c
@@ -4,7 +4,7 @@
  * Check if an object is a stream or not.
  */
 int
-pdf_is_stream(fz_context *ctx, pdf_document *doc, int num, int gen)
+pdf_obj_num_is_stream(fz_context *ctx, pdf_document *doc, int num, int gen)
 {
 	pdf_xref_entry *entry;
 
@@ -16,6 +16,13 @@ pdf_is_stream(fz_context *ctx, pdf_document *doc, int num, int gen)
 	return entry->stm_ofs != 0 || entry->stm_buf;
 }
 
+int
+pdf_is_stream(fz_context *ctx, pdf_obj *obj)
+{
+	return pdf_obj_num_is_stream(ctx, pdf_get_indirect_document(ctx, obj),
+			pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
+}
+
 /*
  * Scan stream dictionary for an explicit /Crypt filter
  */
@@ -646,7 +653,7 @@ pdf_open_contents_stream(fz_context *ctx, pdf_document *doc, pdf_obj *obj)
 
 	num = pdf_to_num(ctx, obj);
 	gen = pdf_to_gen(ctx, obj);
-	if (pdf_is_stream(ctx, doc, num, gen))
+	if (pdf_is_stream(ctx, obj))
 		return pdf_open_image_stream(ctx, doc, num, gen, num, gen, NULL);
 
 	fz_throw(ctx, FZ_ERROR_GENERIC, "pdf object stream missing (%d %d R)", num, gen);
diff --git a/source/pdf/pdf-type3.c b/source/pdf/pdf-type3.c
index 56128c9a..236ac6c4 100644
--- a/source/pdf/pdf-type3.c
+++ b/source/pdf/pdf-type3.c
@@ -158,7 +158,7 @@ pdf_load_type3_font(fz_context *ctx, pdf_document *doc, pdf_obj *rdb, pdf_obj *d
 			if (estrings[i])
 			{
 				obj = pdf_dict_gets(ctx, charprocs, estrings[i]);
-				if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj)))
+				if (pdf_is_stream(ctx, obj))
 				{
 					fontdesc->font->t3procs[i] = pdf_load_stream(ctx, doc, pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
 					fontdesc->size += fontdesc->font->t3procs[i]->cap;
diff --git a/source/pdf/pdf-unicode.c b/source/pdf/pdf-unicode.c
index 7b04c02c..ca84341d 100644
--- a/source/pdf/pdf-unicode.c
+++ b/source/pdf/pdf-unicode.c
@@ -61,7 +61,7 @@ pdf_load_to_unicode(fz_context *ctx, pdf_document *doc, pdf_font_desc *font,
 {
 	unsigned int cpt;
 
-	if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, cmapstm), pdf_to_gen(ctx, cmapstm)))
+	if (pdf_is_stream(ctx, cmapstm))
 	{
 		pdf_cmap *ucs_from_cpt = pdf_load_embedded_cmap(ctx, doc, cmapstm);
 		font->to_unicode = pdf_remap_cmap(ctx, font->encoding, ucs_from_cpt);
diff --git a/source/pdf/pdf-write.c b/source/pdf/pdf-write.c
index 62ea6c88..c8b18c55 100644
--- a/source/pdf/pdf-write.c
+++ b/source/pdf/pdf-write.c
@@ -534,7 +534,7 @@ static pdf_obj *markref(fz_context *ctx, pdf_document *doc, pdf_write_state *opt
 	/* Bake in /Length in stream objects */
 	fz_try(ctx)
 	{
-		if (pdf_is_stream(ctx, doc, num, gen))
+		if (pdf_obj_num_is_stream(ctx, doc, num, gen))
 		{
 			pdf_obj *len = pdf_dict_get(ctx, obj, PDF_NAME_Length);
 			if (pdf_is_indirect(ctx, len))
@@ -656,8 +656,8 @@ static void removeduplicateobjs(fz_context *ctx, pdf_document *doc, pdf_write_st
 			 */
 			fz_try(ctx)
 			{
-				streama = pdf_is_stream(ctx, doc, num, 0);
-				streamb = pdf_is_stream(ctx, doc, other, 0);
+				streama = pdf_obj_num_is_stream(ctx, doc, num, 0);
+				streamb = pdf_obj_num_is_stream(ctx, doc, other, 0);
 				differ = streama || streamb;
 				if (streama && streamb && opts->do_garbage >= 4)
 					differ = 0;
@@ -1792,7 +1792,7 @@ static void writeobject(fz_context *ctx, pdf_document *doc, pdf_write_state *opt
 	}
 
 	entry = pdf_get_xref_entry(ctx, doc, num);
-	if (!pdf_is_stream(ctx, doc, num, gen))
+	if (!pdf_obj_num_is_stream(ctx, doc, num, gen))
 	{
 		fz_printf(ctx, opts->out, "%d %d obj\n", num, gen);
 		pdf_print_obj(ctx, opts->out, obj, opts->do_tight);