Hook over OverlayEffect, and make add_effect() take a variable number of parameters.

[nageru] / theme.cpp

diff --git a/theme.cpp b/theme.cpp
index 882890641831a22d8862927a881bacdafe66ab0d..410ac746c4f713f8b43dc32d0174483b8a682f25 100644 (file)
--- a/theme.cpp
+++ b/theme.cpp
@@ -10,6 +10,7 @@
 #include <movit/white_balance_effect.h>
 #include <movit/resample_effect.h>
 #include <movit/padding_effect.h>
+#include <movit/overlay_effect.h>
 
 #include "theme.h"
 
@@ -48,7 +49,8 @@ Effect *get_effect(lua_State *L, int idx)
        if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
            luaL_testudata(L, idx, "ResampleEffect") ||
            luaL_testudata(L, idx, "PaddingEffect") ||
-           luaL_testudata(L, idx, "IntegralPaddingEffect")) {
+           luaL_testudata(L, idx, "IntegralPaddingEffect") ||
+           luaL_testudata(L, idx, "OverlayEffect")) {
                return (Effect *)lua_touserdata(L, idx);
        }
        fprintf(stderr, "Error: Index #%d was not an Effect type\n", idx);
@@ -80,20 +82,23 @@ int EffectChain_add_live_input(lua_State* L)
 
 int EffectChain_add_effect(lua_State* L)
 {
-       assert(lua_gettop(L) == 3);
+       assert(lua_gettop(L) >= 2);
        EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
 
        // TODO: Better error reporting.
-       Effect *effect1 = get_effect(L, 2);
-       if (luaL_testudata(L, 3, "LiveInputWrapper")) {
-               LiveInputWrapper *effect2 = (LiveInputWrapper *)lua_touserdata(L, 3);
-               chain->add_effect(effect1, effect2->get_input());
-       } else {
-               Effect *effect2 = get_effect(L, 3);
-               chain->add_effect(effect1, effect2);
+       Effect *effect = get_effect(L, 2);
+       vector<Effect *> inputs;
+       for (int idx = 3; idx <= lua_gettop(L); ++idx) {
+               if (luaL_testudata(L, idx, "LiveInputWrapper")) {
+                       LiveInputWrapper *input = (LiveInputWrapper *)lua_touserdata(L, idx);
+                       inputs.push_back(input->get_input());
+               } else {
+                       inputs.push_back(get_effect(L, idx));
+               }
        }
+       chain->add_effect(effect, inputs);
 
-       lua_settop(L, 2);       
+       lua_settop(L, 2);  // Return the effect itself.
        return 1;
 }
 
@@ -157,6 +162,12 @@ int IntegralPaddingEffect_new(lua_State* L)
        return wrap_lua_object<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
 }
 
+int OverlayEffect_new(lua_State* L)
+{
+       assert(lua_gettop(L) == 0);
+       return wrap_lua_object<OverlayEffect>(L, "OverlayEffect");
+}
+
 int Effect_set_float(lua_State *L)
 {
        assert(lua_gettop(L) == 3);
@@ -222,6 +233,13 @@ const luaL_Reg IntegralPaddingEffect_funcs[] = {
        { NULL, NULL }
 };
 
+const luaL_Reg OverlayEffect_funcs[] = {
+       { "new", OverlayEffect_new },
+       { "set_float", Effect_set_float },
+       { "set_int", Effect_set_int },
+       { NULL, NULL }
+};
+
 }  // namespace
 
 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain)
@@ -264,6 +282,7 @@ Theme::Theme(const char *filename, ResourcePool *resource_pool)
        register_class("ResampleEffect", ResampleEffect_funcs);
        register_class("PaddingEffect", PaddingEffect_funcs);
        register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
+       register_class("OverlayEffect", OverlayEffect_funcs);
 
        // Run script.
        lua_settop(L, 0);