fix(png): fix png chunk writer's writing order

It now prints it in the way the spec intends (length, type, data, crc)

Signed-off-by: Watson Wheeler <git@tazy.dev>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/format/image/png.c b/src/format/image/png.c
index 48c073c..dfd3230 100644
--- a/src/format/image/png.c
+++ b/src/format/image/png.c
@@ -482,11 +482,11 @@ ff_result ff_close_png(ff_ctx* ctx, ff_png_ctx *png_ctx)
 
 ff_result ff_write_chunk(ff_stream *stream, const char *type, uint8_t *buf, size_t len)
 {
-    stream->write(type, 4, stream->user);
-
-    uint32_t be_len = (uint32_t)len;
-    stream->write(&be_len, 4, stream->user);
+    uint8_t be_len[4];
+    ff_write_be32(be_len, (uint32_t)len);
 
+    stream->write(be_len, 4, stream->user);
+    stream->write(type, 4, stream->user);
     stream->write(buf, len, stream->user);
 
     uint32_t zero_crc = 0;
@@ -594,4 +594,4 @@ ff_result ff_png_normalize(ff_ctx *ctx, ff_png_ctx *png_ctx, ff_image_ctx **out_
         (void)png_ctx;
     }
     return FF_RESULT_OK;
-}
\ No newline at end of file
+}