1 files changed, 38 insertions, 0 deletions
diff --git a/video/out/gpu/libmpv_gpu.h b/video/out/gpu/libmpv_gpu.h
new file mode 100644
index 0000000000..5b41116f14
--- /dev/null
+++ b/video/out/gpu/libmpv_gpu.h
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "video/out/libmpv.h"
+
+struct libmpv_gpu_context {
+    struct mpv_global *global;
+    struct mp_log *log;
+    const struct libmpv_gpu_context_fns *fns;
+
+    struct ra *ra;
+    void *priv;
+};
+
+// Manage backend specific interaction between libmpv and ra backend, that can't
+// be managed by ra itself (initialization and passing FBOs).
+struct libmpv_gpu_context_fns {
+    // The libmpv API type name, see MPV_RENDER_PARAM_API_TYPE.
+    const char *api_name;
+    // Pretty much works like render_backend_fns.init, except that the
+    // API type is already checked by the caller.
+    // Successful init must set ctx->ra.
+    int (*init)(struct libmpv_gpu_context *ctx, mpv_render_param *params);
+    // Wrap the surface passed to mpv_render_context_render() (via the params
+    // array) into a ra_tex and return it. Returns a libmpv error code, and sets
+    // *out to a temporary object on success. The returned object is valid until
+    // another wrap_fbo() or done_frame() is called.
+    // This does not need to care about generic attributes, like flipping.
+    int (*wrap_fbo)(struct libmpv_gpu_context *ctx, mpv_render_param *params,
+                    struct ra_tex **out);
+    // Signal that the ra_tex object obtained with wrap_fbo is no longer used.
+    // For certain backends, this might also be used to signal the end of
+    // rendering (like OpenGL doing weird crap).
+    void (*done_frame)(struct libmpv_gpu_context *ctx, bool ds);
+    // Free all data in ctx->priv.
+    void (*destroy)(struct libmpv_gpu_context *ctx);
+};
+
+extern const struct libmpv_gpu_context_fns libmpv_gpu_context_gl;