1 files changed, 63 insertions, 0 deletions
diff --git a/video/zimg.h b/video/zimg.h
new file mode 100644
index 0000000000..0d9c139f9a
--- /dev/null
+++ b/video/zimg.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <stdbool.h>
+
+#include <zimg.h>
+
+#include "mp_image.h"
+
+#define ZIMG_ALIGN 64
+
+struct mpv_global;
+
+bool mp_zimg_supports_in_format(int imgfmt);
+bool mp_zimg_supports_out_format(int imgfmt);
+
+struct mp_zimg_context {
+    // Can be set for verbose error printing.
+    struct mp_log *log;
+
+    // User configuration. Note: changing these requires calling mp_zimg_config()
+    // to update the filter graph. The first mp_zimg_convert() call (or if the
+    // image format changes) will do this automatically.
+    zimg_resample_filter_e scaler;
+    double scaler_params[2];
+    zimg_resample_filter_e scaler_chroma;
+    double scaler_chroma_params[2];
+    zimg_dither_type_e dither;
+    bool fast; // reduce quality for better performance
+
+    // Input/output parameters. Note: if these mismatch with the
+    // mp_zimg_convert() parameters, mp_zimg_config() will be called
+    // automatically.
+    struct mp_image_params src, dst;
+
+    // Cached zimg state (if any). Private, do not touch.
+    zimg_filter_graph *zimg_graph;
+    void *zimg_tmp;
+    struct mp_zimg_repack *zimg_src;
+    struct mp_zimg_repack *zimg_dst;
+};
+
+// Allocate a zimg context. Always succeeds. Returns a talloc pointer (use
+// talloc_free() to release it).
+struct mp_zimg_context *mp_zimg_alloc(void);
+
+// Try to build the conversion chain using the parameters currently set in ctx.
+// If this succeeds, mp_zimg_convert() will always succeed (probably), as long
+// as the input has the same parameters.
+// Returns false on error.
+bool mp_zimg_config(struct mp_zimg_context *ctx);
+
+// Similar to mp_zimg_config(), but assume none of the user parameters changed,
+// except possibly .src and .dst. This essentially checks whether src/dst
+// changed, and if so, calls mp_zimg_config().
+bool mp_zimg_config_image_params(struct mp_zimg_context *ctx);
+
+// Convert/scale src to dst. On failure, the data in dst is not touched.
+bool mp_zimg_convert(struct mp_zimg_context *ctx, struct mp_image *dst,
+                     struct mp_image *src);
+
+// Set the global zimg command line parameters on this context. Use this if you
+// want the user to be able to change the scaler etc.
+void mp_zimg_set_from_cmdline(struct mp_zimg_context *ctx, struct mpv_global *g);