feat(dbg): Add debugging to png.c

1 files changed, 20 insertions, 0 deletions

diff --git a/src/format/image/dbg.c b/src/format/image/dbg.c
new file mode 100644
index 0000000..56cb53b
--- /dev/null
+++ b/src/format/image/dbg.c
@@ -0,0 +1,20 @@
+#include "dbg.h"
+
+ff_result ff_set_debug_stream(FILE *stream)
+{
+    intff_debug_stream = stream;
+    intff_debug_enabled = (stream != NULL);
+    return FF_RESULT_OK;
+}
+
+ff_result ff_dprintf(const char *format, ...)
+{
+    if (!intff_debug_enabled || !intff_debug_stream) return FF_RESULT_WARN_DEBUG_DISABLED;
+
+    va_list args;
+    va_start(args, format);
+    vfprintf(intff_debug_stream, format, args);
+    va_end(args);
+
+    return FF_RESULT_OK;
+}