Function PushStream

engine/gamesys/src/gamesys/scripts/script_buffer.cpp:202–247

    }

    static int PushStream(lua_State* L, int bufferindex, dmBuffer::HBuffer buffer, dmhash_t stream_name)
    {
        DM_LUA_STACK_CHECK(L, 1);
        dmBuffer::ValueType type;
        uint32_t components;
        dmBuffer::Result r = dmBuffer::GetStreamType(buffer, stream_name, &type, &components);
        if( r != dmBuffer::RESULT_OK )
        {
            return DM_LUA_ERROR("Failed to get stream type: %s", dmBuffer::GetResultString(r));
        }

        void** data;
        uint32_t count = 0;
        uint32_t stride = 0;
        r = dmBuffer::GetStream(buffer, stream_name, (void**)&data, &count, &components, &stride);
        if( r != dmBuffer::RESULT_OK )
        {
            return DM_LUA_ERROR("Failed to get stream bytes: %s", dmBuffer::GetResultString(r));
        }

        FStreamGetter getter = GetGetter(type);
        FStreamSetter setter = GetSetter(type);
        if (getter == 0 || setter == 0)
        {
            return DM_LUA_ERROR("Failed to get stream getter and setter!");
        }

        BufferStream* p = (BufferStream*)lua_newuserdata(L, sizeof(BufferStream));
        p->m_Buffer = buffer;
        p->m_Name = stream_name;
        p->m_Data = data;
        p->m_Count = count;
        p->m_Stride = stride;
        p->m_Type = type;
        p->m_TypeCount = components;
        p->m_Set = setter;
        p->m_Get = getter;

        // Push the Lua object and increase its ref count
        lua_pushvalue(L, bufferindex);
        p->m_BufferRef = dmScript::Ref(L, LUA_REGISTRYINDEX);

        luaL_getmetatable(L, SCRIPT_TYPE_NAME_BUFFERSTREAM);
        lua_setmetatable(L, -2);
        return 1;
    }

    static BufferStream* CheckStreamNoError(lua_State* L, int index)
    {