Some improvements and fixes

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 11 insertions, 7 deletions

diff --git a/src/blind-matrix-scale.c b/src/blind-matrix-scale.c
index 8dd6b83..5675a8e 100644
--- a/src/blind-matrix-scale.c
+++ b/src/blind-matrix-scale.c
@@ -10,9 +10,9 @@ static int per_channel = 0;
 		typedef TYPE pixel_t[4];\
 		pixel_t matrix[9];\
 		pixel_t buf[2];\
-		int i;\
+		size_t i;\
 		\
-		for (i = 0; i < 4; i++) {\
+		for (i = 0; i < stream->n_chan; i++) {\
 			matrix[0][i] = 1, matrix[1][i] = 0, matrix[2][i] = 0;\
 			matrix[3][i] = 0, matrix[4][i] = 1, matrix[5][i] = 0;\
 			matrix[6][i] = 0, matrix[7][i] = 0, matrix[8][i] = 1;\
@@ -20,13 +20,17 @@ static int per_channel = 0;
 		\
 		while (eread_frame(stream, buf)) {\
 			if (per_channel) {\
-				for (i = 0; i < 4; i++) {\
+				for (i = 0; i < stream->n_chan; i++) {\
 					matrix[0][i] = buf[0][i];\
 					matrix[4][i] = buf[1][i];\
 				}\
 			} else {\
-				matrix[0][3] = matrix[0][2] = matrix[0][1] = matrix[0][0] = buf[0][1] * buf[0][3];\
-				matrix[4][3] = matrix[4][2] = matrix[4][1] = matrix[4][0] = buf[1][1] * buf[1][3];\
+				buf[0][1] *= buf[0][3];\
+				buf[1][1] *= buf[1][3];\
+				for (i = 0; i < stream->n_chan; i++) {\
+					matrix[0][i] = buf[0][1];\
+					matrix[4][i] = buf[1][1];\
+				}\
 			}\
 			ewriteall(STDOUT_FILENO, matrix, sizeof(matrix), "<stdout>");\
 		}\
@@ -62,9 +66,9 @@ main(int argc, char *argv[])
 	fprint_stream_head(stdout, &stream);
 	efflush(stdout, "<stdout>");
 
-	if (!strcmp(stream.pixfmt, "xyza"))
+	if (stream.encoding == DOUBLE)
 		process = process_lf;
-	else if (!strcmp(stream.pixfmt, "xyza f"))
+	else if (stream.encoding == FLOAT)
 		process = process_f;
 	else
 		eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt);