profile, test: set storage size before rendering

As programs provided with the library's source code they also serve
as examples for how to correctly use the API, which usually means
setting a storage size.

compare already sets the storage size.

profile can continue using a fixed size, it never outputs the rendering.

test already had issues before if either the guessed storage size was
incorrect or the frame size didn't match the intended aspect ratio.
To fix both, add new optional arguments for storage and frame size.

2 files changed, 16 insertions, 4 deletions

diff --git a/profile/profile.c b/profile/profile.c
index b89d10b..3740a6c 100644
--- a/profile/profile.c
+++ b/profile/profile.c
@@ -57,6 +57,7 @@ static void init(int frame_w, int frame_h)
         exit(1);
     }
 
+    ass_set_storage_size(ass_renderer, frame_w, frame_h);
     ass_set_frame_size(ass_renderer, frame_w, frame_h);
     ass_set_fonts(ass_renderer, NULL, "Sans", 1, NULL, 1);
 }
diff --git a/test/test.c b/test/test.c
index b099a9a..f1de28f 100644
--- a/test/test.c
+++ b/test/test.c
@@ -107,6 +107,7 @@ static void init(int frame_w, int frame_h)
         exit(1);
     }
 
+    ass_set_storage_size(ass_renderer, frame_w, frame_h);
     ass_set_frame_size(ass_renderer, frame_w, frame_h);
     ass_set_fonts(ass_renderer, NULL, "sans-serif",
                   ASS_FONTPROVIDER_AUTODETECT, NULL, 1);
@@ -192,16 +193,26 @@ static void print_font_providers(ASS_Library *ass_library)
 
 int main(int argc, char *argv[])
 {
-    const int frame_w = 1280;
-    const int frame_h = 720;
+    int frame_w = 1280;
+    int frame_h = 720;
 
-    if (argc < 4) {
-        printf("usage: %s <image file> <subtitle file> <time>\n", argv[0]);
+    if (argc != 4 && argc != 6) {
+        printf("usage: %s <image file> <subtitle file> <time> "
+               "[<storage width> <storage height>]\n",
+                argv[0]);
         exit(1);
     }
     char *imgfile = argv[1];
     char *subfile = argv[2];
     double tm = strtod(argv[3], 0);
+    if (argc == 6) {
+        frame_w = atoi(argv[4]);
+        frame_h = atoi(argv[5]);
+        if (frame_w <= 0 || frame_h <= 0) {
+            printf("storage size must be non-zero and positive!\n");
+            exit(1);
+        }
+    }
 
     print_font_providers(ass_library);